Canon NP6621 manual

FY8-13F4-000 FEB. 1998 COPYRIGHT © 1998 CANON INC . CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) SER VICE MANUAL REVISION 0[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) COPYRIGHT © 1998 CANON INC. Printed in Japan Imprimé au Japon Use of this manual should be strictly supervised to avoid disclosure of confidential information. Prepared by OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1 OFFICE IMAGING PRODUCTS TEC[...]

Introduction i COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) This Service Manual provides basic facts and figures you will need to service the plain paper copier NP6621 in the field. The NP6621 is designed to enable automated copying work and may be configured with the following accessory; for servici[...]

ii Introduction COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) RDF-F1 (Recirculating Document Feeder) Automatically feeds a set of up to 100 originals to the platen glass for copying. The RDF can also turn over two-sided originals for automatic two-sided copying. MS-B1 (10 bins) Automotically sorts and[...]

iii COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) CONTENTS CHAPTER 1 GENERAL DESCRIPTION I. FEATURES ................................................ 1-1 II. SPECIFICATIONS ..................................... 1-2 A. Copier .................................................. 1-2 B. Cassette Feeding Mo[...]

iv COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. Duplexing Unit ................................... 3-63 D. Pick-Up from the Cassette Feeding Module-A2 ......................................... 3-72 E. Pick-Up from the Cassette Feeding Unit-K1 ............................................... 3-74 F.[...]

v COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 6 MAINTENANCE AND SER VICING C. Paper Deck Pedestal-K1 ..................... 6-3 III. BASIC SERVICING ................................... 6-4 IV. SERVICING CHART ................................. 6-5 A. Scheduled Maintenance Work ............ 6-5[...]

vi COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 1 GENERAL DESCRIPTION I. FEATURES ................................................ 1-1 II. SPECIFICATIONS ..................................... 1-2 A. Copier .................................................. 1-2 B. Cassette Feeding Module-B2/ Cass[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–1 I. FEA TURES When fitted with options, it provides a maximum of four paper sources. 1. Multiple front loading and multifeeder for space saving. • The cassette may be slid out to the front for paper supply work. • With the adju[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–2 Item Body Copyboard Light source Lens Photosensitive medium Specifications Desktop Fixed Halogen lamp Zoom lens OPC Item Copying Charging Exposure Copy density adjustment Development Pick-up Transfer Separation Cleaning Fixing Spe[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–3 Specifications Sheet, book, 3-D object (2 kg/2.204 lb. max.) A3 (297 x 420 mm) DIRECT, 2R2E (Table 1-1); zoom between 49% and 204% (fine zooming provided) 30 sec 9.7 sec (approx.; A4, DIRECT, non-AE, cassette 1) 100 copies (max.; [...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–4 Item Temperature Operating environment Humidity Atmospheric pressure Power supply 230 V (50Hz) Standby Power consumption Continuous copying Copying Noise Standby Ozone (avr over 8 hr) Width Dimensions Depth Height Weight Copy pape[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–5 Reproduction ratio DIRECT 1: 1 (±0.5%) 1: 0.500 (+1.0%) REDUCE 1: 0.707 (+1.0%) 1: 2.000 (+1.0%) ENLARGE 1: 1.414 (+1.0%) Copy size A3 (297 × 420) A4 (210 × 297) A5 (148 × 210) B4 (257 × 364) B5 (182 × 257) A4R (297 × 210) [...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–6 C. P aper Deck P edestal-K1 Table 1-204 Clawless Front loading Plain paper (64 to 80 g/m 2 ), Colored paper* A4 (landscape), B5 (landscape), LTR (landscape) 162 mm high (one side; equivalent of 1500 sheets of 80 g/m 2 paper) Parti[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–7 III. NAMES OF PAR TS A. Exterior q Body open/close lever w Copy density correction volume e Static eliminator cleaner r Static eliminator t Copy tray y Anti-condensation heater switch (rear) Fluorescent heater switch (front) Figur[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–8 B. Cross Section 1. Cross Section of the Body q No. 3 mirror w No. 2 mirror e No. 1 mirror r Scanning lamp t Fixing unit y Feeding assembly u Copyboard glass i Drum unit o Lens !0 Primary charging roller !1 Transfer roller !2 No. [...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–9 2. Cassette Feeding Module-A2 q Cassette 3 w Cassette 4 e Cassette 3 pick-up roller r Cassette 4 pick-up roller t Drive roller y Feeding roller Figure 1-304 6 4 2 1 3 5[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–10 3. Cassette Feeding Unit-K1 q Cassette 3 w Cassette 4 e Cassette 3 pick-up roller r Cassette 4 pick-up roller t Vertical path roller 4 y Vertical path roller 3 u Vertical path roller 5 i Cassette 5 pick-up roller o Cassette 5 Fig[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–11 4. Paper Deck Pedestal-K1 q Deck pick-up roller w Deck vertical path roller e Vertical path roller 3 r Deck feeding roller t Deck separation roller y Lifter u Deck Figure 1-306 5 6 7 4 2 1 3[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–12[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–13 q Sorter key w Two-sided key (left side) e Two-sided key (right side) r AE key t Copy exposure key y Reduce/1:1/Enlarge key u Message display Press to set or cancel the Sort, Staple Sort, and Group modes. Sort mode: When copying a multi-page documen[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–14[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–15 Figure 1-402 Press to set or cancel the Transparency Interleaving mode. The interleaf sheets are printed with the same images as the transparencies. The interleaf sheets are left blank. Copies facing pages in a bound original ont[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–16 B. Making Copies 1) Place your originals. a. Placing originals on the platen glass • Lift the platen glass cover. • Place your original on the platen glass. The surface that you want to copy must face down. Align the edge of [...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–17 C. Using the Stack Bypass You can place up to 50 sheets of copy paper (a stack approximately 5 mm high) in the stack bypass to be automatically fed into the copier. Use the stack bypass when you want to copy on special stock, suc[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–18 4) Adjust the slide guides to fit the size of the copy stock. Reference: 1. Be sure to adjust the slide guides to fit the size of the copy stock. 2. When feeding A4R or A3-size copy stock, pull out the auxiliary tray. Figure 1-41[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–19 7) Press the key. If you set the Two-sided, Two-page separation, Overlay, Image Separation or Transparency Interleaving modes in step 1 for stack bypass feeding, and you have not selected the size of the paper to be fed, the Pape[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–20 Settings –0 –1 –2 –3 –4 –5 –6 –7 –8 –9 Auto Clear Time (min.) 0 1 2 3 4 5 6 7 8 9 3. Auto Clear Time If the copier is not operated (no keys are pressed) for a certain period of time, the copier automatically r[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–21 a. Zoom Fine Adjustment (Reduction): Press the key. b. Zoom Fine Adjustment (Enlargement): Press the key. 5. Zoom Fine Adjustment • If there is a slight difference in size between the original and output copy images when the co[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–22 4) Make fine adjustments to the copy ratio in the X direction. • Press the Exposure keys ( ) to adjust the copy ratio. • The initial setting for Zoom Fine Adjustment is 0%. • If you make a mistake while entering a value, pr[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–23 7. Stack Bypass Size Entry ON/OFF • When making two-sided and overlay copies, etc. on copy paper placed in the stack bypass, you must specify the size of the paper. OFF: The “SELECT PAPER SIZE” display flashes and the stack[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–24 4) Press the Number keys ( 1 , 0 ) to select Auto Sort ON/OFF. • The settings are displayed in the Copy quantity/Copy ratio display. • The initial setting for Auto Sort is ON. • If you make a mistake while entering a value,[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–25 11. Initializing User Mode • The settings that were changed in the Additional Functions mode can be restored to their initial settings. 1) Press the Aditional Function key. • “U01” appears in the Copy quantity/Copy ratio [...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–26 V . WARNINGS AND ACTIONS A. Jam Indicator 1. When q Flashes on the Control Panel 1) Open the front door. Figure 1-501 2) Lift the green lever on the left side to open the top of the main unit. Figure 1-502 3) Slowly remove any ja[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–27 • If a paper jam occurs in a location similar to that shown in the picture to the lower, slowly pull the paper out in the direction of the arrows, taking care not to tear it. Figure 1-505 Figure 1-506 • If you cannot find the[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–28 7) Place your finger on the inner guide. • Push the inner guide down towards you and gently pull out any jammed paper so that it does not tear. Figure 1-512 Figure 1-513 8) Securely close the right door of the cassette. • Whe[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–29 2) Open the right door of the cassette. • Place your finger on the green finger grip and pull open the inner guide for the copier main unit cassette. If the Cassette Feeding Module or Paper Deck (options) is attached, open both[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–30 7) After inspecting all jam location areas that appeared on the control panel, and removing any jammed paper, close the front door. If a paper jam occurred while using the ADF/ RDF (options), after clearing the paper jam, place t[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–31 4. If Flashes (Replacing the Toner Cartridge) • If the toner has run low, the Replace Toner Cartridge indicator ( ) will flash. Follow the procedure described below and replace the used toner cartridge with a new one. 1) Open t[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–32 5) Set the new toner cartridge. • Gently insert it into the copier as far as it will go. • Make sure that the toner cartridge is inserted all the way into the copier. Figure 1-534 6) Pull the toner cartridge sealing tape off.[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–33 B. Cleaning the Static Charge Eliminator 1) Open the front door. • Remove any originals that have been placed on top of the copier so that they do not fall off when you open the main unit. 2) Lift the green lever on the left si[...]

GENERAL DESCRIPTION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1–34 VI. ROUTINE CLEANING Clean the following parts once a week or when- ever copies appear dirty. Warning: 1. When cleaning the copier, first turn OFF the power switch and unplug the power plug. Failure to observe these items may res[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 2 COPYING PROCESS I. IMAGE FORMATION ................................ 2-1 A. Outline ................................................. 2-1 B. Latent Static Image Formation Block .. 2-2 C. Step 1 (pre-exposure) ......................... 2-3 D. Step [...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

2–1 COPYING PROCESS COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) I. IMA GE FORMA TION A. Outline Figure 2-101 Figure 2-102 Static latent image f or mation bloc k Primar y Pre-e xposure Drum Delivery Separation Fixing T ransf er Image e xposure De velopment Manual f eeding Registration Cassette flow[...]

2–2 COPYING PROCESS COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) The copier forms images through the following steps, and each of the steps functions as described below. step 1 pre-exposure step 2 primary charging (negative DC) step 3 image exposure step 4 development (AC and negative DC bias) step[...]

2–3 COPYING PROCESS COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. Step 1 (pre-exposure) Figure 2-105 Before primary charging takes place, the light of the pre-exposure lamp is directed to the photosen- sitive drum to eliminate the residual charges on the drum, thereby preventing uneven density. D[...]

2–4 COPYING PROCESS COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) F . Step 4 (development) Figure 2-109 E. Step 3 (image exposure) Figure 2-107 In this step, the optical image of an original is projected on the photosensitive drum to neutralize the charges in the light areas. Figure 2-108 As shown i[...]

2–5 COPYING PROCESS COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) G. Step 5 (transfer) Figure 2-111 The transfer roller deposits negative charges on the back of copy paper to attract toner from the drum surface to the copy paper. The copier uses a roller transfer method, which requires a lower trans[...]

2–6 COPYING PROCESS COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) H. Step 6 (separation) Figure 2-113 The copier uses a curvature separation method, which separates copy paper from the photosensi- tive drum by the rigidity of the paper. However, thin paper could at times fail to separate from the dr[...]

2–7 COPYING PROCESS COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) J. Step 8 (drum cleaning) I. Step 7 (fixing) Figure 2-114 In this step, the copy paper is pressed between two heated rollers to make the toner image permanent. To prevent the copy paper from wrapping around the roller and toner offset[...]

2–8 COPYING PROCESS COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) II. AUXILIAR Y PR OCESS A. Blank Exposure Blank exposure is executed to remove the drum surface potential of the non-image area that occurs as a result of the difference among copy sizes or when making copies in Reduce mode. The light[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 3 OPERA TIONS AND TIMING In outline diagrams, represents mechanical drive paths, and indicates electrical signal paths. Signals in digital circuits are identified as ‘1’ for High and ‘0’ for Low. The voltage of signals, however, depends on [...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) I. Fixing/Delivery Assembly .................. 3-87 J. Detecting Jams .................................. 3-92 V. POWER SUPPLY .................................. 3-101 A. Outline of Power Distribution ........... 3-101 B. Power Supply Circuitry ............[...]

3–1 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) I. BASIC OPERA TIONS A. Functional Construction The machine can be divided into four functional blocks: pick-up/feeding system, exposure system, image formation system, and control system. Figure 3-101 Control system Control pan[...]

3–2 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) B. Outline of Electrical Cir- cuitry The machine’s most electrical mechanisms are controlled by the microprocessor on its DC controller PCB. The microprocessor reads the input signals from the sensors and operation keys accord[...]

3–3 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. Inputs to the DC Controller 1. Inputs to the DC Controller PCB (1/5) Figure 3-103 5V PS 1 Registration sensor 5V J 310A- 3 - 2 - 1 PS 2 LHP When the home position sensor detects lens, '1'. (when the light-blocking p[...]

3–4 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Inputs to the DC Controller (2/5) Figure 3-104 5V PS 11 Vertical path roller 1 paper sensor 5V J 309- 6 - 5 - 4 PS 12 VP2P When PS12 detects paper, '1'. Vertical path roller 2 paper sensor 5V J 309- 1 - 3 - 2 PS 13 [...]

3–5 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Inputs to the DC controller (3/5) Figure 3-105 J 310B- 8 - 7 - 9 PS 21 Original size sensor 2 5V J 310B- 2 - 1 - 3 SIZE1 PS 23 DC controller SIZE2 Varies according to paper size. Varies according to paper size. Original size [...]

3–6 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 4. Inputs to the DC Controller PCB (4/5) Figure 3-106 J 651 - 6 - 5 - 4 - 3 - 2 - 1 J 318 - 7 - 8 - 9 - 10 - 11 - 12 CS CSZ1 CSZ2 CSZ3 CSZ4 Cassette size sensor 2 See p. 3-85. See p. 3-87. J 651 - 6 - 5 - 4 - 3 - 2 - 1 J 318 - 1[...]

3–7 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 5. Inputs to the DC Controller PCB (5/5) Figure 3-107 DC controller PCB AEVR1 AEVR2 CDC J306-7 -8 -9 Adjusts the developing DC bias SRSW VR850 SW850 Service switch PCB Service switch Density correction volume AE sensor adjustmen[...]

3–8 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) D. Outputs from the DC Controller 1. Outputs from the DC Controller PCB (1/5) Figure 3-108 +5V 24V +5V A B B RL101 RL103 HTON* TEP* EHTRL* Cassette heater (H4) Drum heater (H3) Cassette heater (H5) Anti-condensation switch (SW1)[...]

3–9 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Outputs from the DC Controller PCB (2/5) Figure 3-109 When '0', the registration clutch turns ON. (registration roller rotates) RGCLD* DC controller PCB CL1 +24V J312A- 5 - 6 Registration clutch When '0', [...]

3–10 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Outputs from the DC Controller PCB (3/5) Figure 3-110 DC controller PCB COM A COM B A A* B B* J326- 1 - 2 - 3 - 4 - 5 - 6 Duplexing unit motor While M5 is rotating, alternates between '1' and '0. (pulse signal[...]

3–11 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 4. Outputs from the DC Controller PCB (4/5) Figure 3-111 DC controller PCB Change solenoid +24V SL1 CHSLD* When '1', the solenoid turns OFF. (blanking shutter width control) When '0', the solenoid turns ON. [...]

3–12 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 5. Outputs from the DC Controller PCB (5/5) Figure 3-112 AST-CNTP* +24V J 315B- 2 - 1 J 314A- 7 - 8 J 315A - 10 J307 - 9 J 315B - 9 J 306A- 11 - 13 - 12 - 10 - 8 J 401 - 1 J12-4 -3 -2 - 2 HEFD* +24V FDFD* +24V PEXP* +24V TCNTD*[...]

3–13 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) E. Inputs to and Outputs from the Cassette Feeding Module-B2 Driver PCB 1. Inputs to and Outputs from the Cassette Feeding Module-B2 Driver PCB (1/1) Figure 3-113 5V J 110- 1 - 3 - 2 J 110- 4 - 6 - 5 PS1cu C3VPD Cassette 3 vert[...]

3–14 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) F . Inputs to and Outputs from the Cassette Feeding Module-A2 Driver PCB 1. Inputs to and Outputs from the Cassette Feeding Module-A2 Driver PCB (1/2) Figure 3-114 5V J 110- 1 - 3 - 2 J 110- 4 - 5 - 6 PS1cu C3VPD Cassette 3 ver[...]

3–15 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Inputs to and Outputs from the Cassette Feeding Module-A2 Driver PCB (2/2) Cassette driver PCB DC controller PCB CMA CMA* CMB CMB* J 114- 1 - 2 - 3 - 4 - 5 - 6 Cassette unit motor While M1cu is rotating, alternates between &[...]

3–16 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) G. Inputs to and Outputs from the Cassette Feeding Unit-K1 Driver PCB 1. Inputs to and Outputs from the Cassette Feeding Unit-K1 Driver PCB (1/3) Figure 3-116 5V J 110- 1 - 3 - 2 J 110- 4 - 6 - 5 J 120- 13 - 15 - 14 J 120- 10 -[...]

3–17 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Inputs to and Outputs from the Cassette Feeding Unit-K1 Driver PCB (2/3) Figure 3-117 J 218 - 6 - 5 - 4 - 3 - 2 - 1 Cassette feeding unit driver PCB DC controller PCB J 110 - 7 - 8 - 9 - 10 - 11 - 12 CS3 C3SZ1 C3SZ2 C3SZ3 C3[...]

3–18 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Inputs to and Outputs from the Cassette Feeding Unit-K1 Driver PCB (3/3) Cassette feeding unit driver PCB DC controller PCB CL1cu 24V J135 - 1 - 2 CL2cu 24V CL3cu 24V Cassette 3 pick-up clutch Cassette 4 pick-up clutch Casse[...]

3–19 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 4. Inputs to Paper Deck-K1 Controller (1/2) Figure 3-119 5V PS 5 Deck open sensor 5V J 112- 3 - 2 - 1 PS 2 DVRPD When PS2 detects paper, "1". (light-blocking palate is at PS2) Deck vertical path roller paper sensor 5V[...]

3–20 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 5. Outputs from Paper Deck-K1 Controller (2/2) Figure 3-120 Pedestal controller PCB When "0" , CL3 goes ON. "1" or "0" depending on the type of copier, thereby changing revolution. 34V 5V 24V 24V M[...]

3–21 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) H. Main Motor Control Circuit 1. Outline Figure 3-121 shows the circuit that controls the main motor (M1), and the circuit has the following functions: q Turns ON/OFF the main motor. w Controls the main motor to a specific spee[...]

3–22 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) I. Basic Sequence of Operations (2 copies, continuous, AE) Figure 3-122 Main motor (M1) Primary charging bias Transfer bias Static eliminator bias Scanning lamp Scanner Developing AC bias Developing DC bias WMUPR WMUP Power swi[...]

3–23 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) From switch on until the fixing roller temperature reaches 165°C for the black developer or 145°C for the CT Unit. (about 75 seconds at an ambient temperature of 20°C) Until the fixing roller temperature reaches 175°C to 18[...]

3–24 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) when the copyboard cover is closed and identify the original as being any of the default paper sizes. Each original size sensor consists of a LED and a phototransistor: the LED illuminates the original, and the photodiode recei[...]

3–25 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Operations When the copyboard cover is brought down to about 30° or less, the copyboard cover sensor (PS11) turns ON, i.e., the light-blocking plate blocks PS11. For 15 sec after PS11 turns ON or until the Copy Start key is[...]

3–26 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Original Size Detection The size of an original is identified with reference to the presence/absence of an original at each sensor based on the sensor output combinations given in Table 3-102. • Level Does Not Change The s[...]

3–27 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) B. Lens Drive System 1. Outline The lens drive system is driven by the lens motor (M3), and the drive generated by the lens motor is transmitted to the blanking shutter exposure unit through a relay gear. (See p. 3-53.) To move[...]

3–28 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Figure 3-202 Change solenoid (SL1) Lens motor (M3) Lens cable Lens motor (M3) Change solenoid (SL1) Relay gear SL1 'ON' (lens drive) SL1 'OFF' (blank e xposure unit drive) Lens home position sensor (PS2) Rel[...]

3–29 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Lens Motor Drive Circuit The lens motor (M3) is a stepping motor and is rotated by the drive power supply signal LNSCA/ LNSCB and pulse signals LNSA/LNSA* and LNSB/ LNSB*. When the lens motor is rotating, the motor is being [...]

3–30 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Basic Sequence of Operations for the Lens Drive System (enlargement/ reduction) In enlargement/reduction mode, the lens is always returned to home position first before being moved to the appropriate position for the selecte[...]

3–31 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. Scanner Drive System 1. Outline The scanner drive system is driven by the scanner motor (M2). The scanner motor changes the direction of its rotation, and its speed changes when moving the scanner forward to suit the selecte[...]

3–32 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Signal SCHP Description Registration clutch ON Scanner reverse OFF 0.1 sec later Scanner sensor PS1 Scanner home position sensor Scanner Forward Reverse ▲ 2. Relationship between Scanner Sensors and Signals Table 3-201 Refere[...]

3–33 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 4. Driving the Scanner Motor a. Outline The scanner motor is a 4-phase control step- ping motor. It is turned ON/OFF and its direction and the speed of its rotation are chanceged by controlling the output timing of pulse signal[...]

3–34 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) D. Operations of the Scanner in Page Separation Mode Figure 3-208 I, II, and II in Figure 3-208 use the scanner home position signal (falling edge of SCHP) for the 1st page as the reference for control by the micropro- cessor o[...]

3–35 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) III. IMA GE FORMA TION SYSTEM A. Outline The machine’s image formation system con- sists of the following: • Controls the scanning lamp. • Controls the primary charging. • Controls the transfer charging. • Controls th[...]

3–36 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) B. Sequence of Operations (image formation system) Main motor/ Pre-exposure lamp Primary charging Transfer charging Transfer cleaning Reference bias (ATVC) Separation static eliminator Developing bias AC component Developing bi[...]

3–37 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) The machine exerts phase control by the zero- cross signal (ZXDP) to stabilize the light intensity. The intensity of the scanning lamp is switched controlled by the LIGHT INTENSITY CONTROL command (FLS). During AE exposure, how[...]

3–38 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) D. Controlling the Primary Charging Roller 1. Outline Figure 3-304 shows the circuit that controls the application voltage of the primary charging roller, and the circuit has the following functions: • Turns ON/OFF the primar[...]

3–39 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Turning ON/OFF the Primary Charg- ing Roller Bias Under the control of the microprocessor master (Q301) on the DC controller PCB, the micro-pro- cessor on the composite power supply PCB gener- ates the PCTRLS signal (pulse s[...]

3–40 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) The sequence of this control mechanism is as follows during initial rotation after the power switch is turned ON: • Flow A specific voltage (about -1.46 kV) is applied to the primary charging roller for about 1.5 sec. The cur[...]

3–41 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) E. Contr olling the T ransf er Roller Bias 1. Outline The machine uses a direct transfer method that uses a roller; and, for this reason, it executes bias control in a way different from copiers that rely on corona charging. Th[...]

3–42 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Figure 3-306 shows the circuit that controls the foregoing three types of biases, and the circuit has the following functions: • Turns ON/OFF the transfer roller bias. • Controls the transfer bias to a constant volt- age. ?[...]

3–43 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Turning ON/OFF the Transfer Roller Bias The TFWON signal is generated under the control of the microprocessor on the composite power supply PCB, thereby turning ON the secondary side of the transfer transformer (T5) and appl[...]

3–44 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) F . Controlling the Static Elimi- nator Bias 1. Outline Figure 3-307 show the circuit that controls the static eliminator bias, and the circuit has the following functions: • Turns ON/OFF the static eliminator bias and contro[...]

3–45 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Switching the Voltage Level of the Static Eliminator Bias The microprocessor on the composite power supply PCB generates the JCTL signal (analog signal) under the control of the microprocessor (Q301) on the DC controller PCB[...]

3–46 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) G. Controlling the Developing Bias 1. Outline Figure 3-308 shows the circuit that controls the developing bias, and the circuit has the following functions: • Turns ON/OFF the developing bias AC component. • Turns ON/OFF th[...]

3–47 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Turning ON/OFF the Developing Bias DC Component and Controlling to Constant Voltage The microprocessor on the composite power supply PCB generates the BPWM signal (pulse signal) under the control of the microprocessor master[...]

3–48 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) H. Copy Density A utomatic Control 1. Outline The machine is equipped with an automatic density correction (AE) function that controls the DC component of the developing bias to suit the density of the original used. As long as[...]

3–49 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. AE Adjustment The machine’s AE adjustment may be performed in service mode, and it consists of the following three: • automatic adjustment of the lamp intensity during AE scanning (No. 301) • reference point adjustment[...]

3–50 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) I. Developing/Cleaning As- sembly 1. Outline The machine’s photosensitive drum, developing cylinder, No. 1 stirring rod, and No. 2 stirring blade are rotated by the drive of the main motor (M1). The level of toner inside the [...]

3–51 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Toner Level Detection Control The level of toner inside the cartridge is monitored by the antenna sensor circuit. Inside the cartridge is the toner level sensor, and an AC bias is applied to the developing cylinder. The deve[...]

3–52 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) q If the toner is more than a specific level, Since toner exists around the toner level sensor, the AC bias generated by the sensor is greater than the reference signal. In this condition, the output of the comparator circuit g[...]

3–53 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) J. Blank Exposure Control 1. Outline The machine directs light from the pre-exposure lamp to the photosensitive drum by way of a reflecting plate for blank exposure, thereby blanking out gaps between sheets of paper and non-ima[...]

3–54 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Blanking the Non-Image Area (re- duction) In reduction mode, the change solenoid (SL1) turns ON, and the lens is moved to suit the selected reduction ratio. At this time, turning the change solenoid (SL1) OFF allows the driv[...]

3–55 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) K. Primary Charging Roller Cleaning Control 1. Outline The machine’s primary charging roller is equipped with an automatic cleaning mechanism. The automatic cleaning mechanism cleans the primary charging roller under the foll[...]

3–56 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Transfer roller locking releasing solenoid Photosensitive drum Transfer roller Fulcrum Locking Releasing L. T ransfer Roller Locking/ Releasing Control 1. Outline The machine’s transfer roller is equipped with a locking/relea[...]

3–57 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) IV . PICK-UP/FEEDING SYSTEM A. Pick-Up from the Machine 1. Outline When the pick-up clutch (CL2, CL3, or CL5) turns ON while the main motor is rotating, the appropriate pick-up roller rotates to pick up paper. The paper is then[...]

3–58 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Figure 3-401 SL2 SL8 M5 M1 CL6 CL3 CL2 CL5 CL1 DC controller PCB CL4 Paper deflecting plate solenoid drive signal (SL8D*) Registration clutch drive signal (RGCLD*) Duplexing unit motor drive signal Main motor drive signal Duple[...]

3–59 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Figure 3-402 DC controller PCB PS8 PS15 PS7 PS6 PS3 PS17 PS16 PS14 PS12 PS4 PS13 J309B-8 Delivery detection signal (DPD*) J320-2 Duplexing unit outlet detection signal (DUEX*) J316B11 Separation detection signal (SPD*) J325-2 D[...]

3–60 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Sequence of Operations (pick-up/feeding system; A4, 2 copies, cassette 1) Figure 3-403 3. Sequence of Operations (pick-up/feeding system; A4, 2 copies, cassette 2) Figure 3-404 Main motor (M1) Cassette 1 pick-up clutch (CL2)[...]

3–61 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) B. Making T wo-Sided Copies (1 copy) 1. Outline The copy paper takes the following path. When copying on the first side, the delivery roller reverses after the paper from the fixing assembly has moved past the delivery sensor; [...]

3–62 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Copying on the 2nd Side Figure 3-407 2. Sequence of Operations (two-sided; 1 copy, A4) Figure 3-408 (forward) Registration paper sensor (PS6) Registration roller clutch (CL1) Delivery sensor (PS8) Duplexing unit inlet paper sen[...]

3–63 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. Duplexing Unit 1. Outline The machine uses a set-back method and a separation flapper during continuous two-sided copying. The term set-back method refers to a method of preventing double feeding by stacking (tiling) sheets [...]

3–64 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Set-Back Operations The lower feeding inlet roller and the lower feeding outlet roller are driven by the main motor, and the set- back roller is driven by a special stepping motor. Figure 3-410 Figure 3-411 Duplex exit detec[...]

3–65 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) a. Set-Back Operations 1. The first copy moves from the delivery assembly to the duplexing unit. Figure 3-412 2. The leading edge of the copy paper butts against the set-back roller 1 and forms an arch. Figure 3-413 Figure 3-41[...]

3–66 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. The set-back rollers 1 rotate counterclockwise, and the leading edge of the copy paper stops at a point about 12 mm past the set-back roller 1. Figure 3-415 4. The second copy paper is moved to the duplexing unit. Figure 3-4[...]

3–67 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6. The set-back rollers 1 rotate clockwise, thereby pulling the trailing edge of the second copy paper out the duplexing unit inlet. Figure 3-418 7. The set-back rollers 1 and 2 rotate counterclockwise, and the leading edge of [...]

3–68 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 9. The set-back rollers 1 rotates counterclockwise, thereby stopping the trailing edge of the first copy paper 6 mm before the set-back rollers 1. Figure 3-420 Set-back roller Duplex exit detect sensor (PS14) 6mm[...]

3–69 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Re-Pick Up Operation After copying on the first side, the copy paper stacked in the duplexing unit is picked up once again for copying on the second side. The machine’s duplexing unit outlet is equipped with a flapper to i[...]

3–70 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1. After the Copy Start key is pressed for the second side, the set-back roller and the duplexing unit outlet roller rotate clockwise. 2. When the first copy paper reaches the duplexing unit outlet sensor, the set-back roller a[...]

3–71 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 4. When the registration sensor turns ON, the set-back roller and the duplexing unit outlet roller rotate clockwise to pick up the second copy paper. Figure 3-425 Photosensitive drum Registration sensor(PS6) Separation sensor S[...]

3–72 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) D. Pick-Up from the Cassette Feeding Module-A2 1. Pick-Up Operation When the pick-up clutch (CL1cu, CL2cu) turns ON while the cassette unit motor (M1cu) is rotating, the pick-up roller rotates to start pick-up operation; the co[...]

3–73 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Sequence of Operations (cassette 3; A4, 2 copies) INTR SRFW SCRV SRFW SCRV LSTR STBY Copy Start key ON Cassette unit Copier Cassette 3 pick-up clutch (CL1cu) Cassette 3 vertical path sensor (PS1cu) Cassette unit motor (M1cu)[...]

3–74 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) E. Pick-Up from the Cassette Feeding Unit-K1 1. Pick-Up Operation The cassette unit motor 1 (M1cu) is used to drive the vertical path roller, and its drive is also used by the pick-up operation for cassettes 3 and 4. The drive [...]

3–75 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Sequence of Operations (pick-up/feeding system; A4, 2 copies, cassette 3) Figure 3-429 3. Sequence of Operations (pick-up/feeding system; A4, 2 copies, cassette 5) Figure 3-430 Pick-up motor 1 (M1cu) Cassette 3 vertical path[...]

3–76 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) F . Paper Deck Pedestal-K1 1. Basic Construction The paper deck unit controls the operation of each load according to the signals from the pedestal controller PCB to send paper to the copier. Each of the loads used to pick-up a[...]

3–77 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Pick-Up/Feeding Operation a. Mechanism When the copier’s COPY START key is pressed, the deck pick-up clutch (CL1) turns on to rotate the deck pick-up roller. The deck pick-up roller leaves the paper when the deck pick-up r[...]

3–78 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) b. Sequence of Pick-Up Operations (A4, 2 copies) INTR SCFW SCRV SCFW LSTR Copy Start key ON Vertical path roller 3 drive clutch (CL3) SCRV Deck vertical path roller drive clutch (CL2) Deck vertical path roller paper sensor (PS2[...]

3–79 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Lifter Operation a. Operation When the deck is slid inside the pedestal, the pick-up roller lowers and the light-blocking plate leaves the deck lifter position sensor (PS3). The condition causes the lifter drive clutch (CL4)[...]

3–80 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) b. Lifter Operation Figure 3-435 M Deck motor Feeding roller Separation roller P aper sensor P aper detecting lev er Lifter upper limit sensor (PS4) Oil damper Copy paper Lifter position sensor (PS3) P aper deteciting spacer Pi[...]

3–81 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 4. Detecting Paper in the Deck a. Identifying the Size of Paper You must set the switch (SW1) on the deck size switch PCB to suit the size of paper set inside the paper deck. When you set the switch, the paper size signal (SIZE[...]

3–82 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) G. Multifeeder 1. Outline The multifeeder is a mechanism which picks up paper from its tray and which is capable of continuous pick-up operation. The copy paper on the tray is detected by the multifeeder paper sensor (PS5). The[...]

3–83 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 2. Identifying the Size of Paper on the Multifeeder Tray The size of paper on the tray is identified by the variable resistor (VR1) that operates in association with the slide guide moving in relation to the slide guide moved b[...]

3–84 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Sequence of Operations (multifeeder; A4, 2 copies) Figure 3-440 INTR SRFW SCRV SRFW SCRV LSTR Copy Start key ON Multifeeder pick-up solenoid (SL2) Multifeeder pick-up clutch (CL3) Pre-registration sensor (PS6) Registration c[...]

3–85 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) H. Identifying the Size of the Cassette Specific photointerrupters (Q651, Q652, Q653, Q654) turn OFF or ON when a cassette is slid into a cassette holder. Specific combinations of the states (ON/OFF) of the photointerrupters ar[...]

3–86 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) To change the size of a cassette, move the guide plates (horizontal, vertical) inside the cassette and also move the paper size lever found at the front of the cassette to the left or right so that the arrow points to the appro[...]

3–87 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) I. Fixing/Delivery Assembly 1. Controlling the Fixing Roller Tem- perature The upper and lower rollers of the fixing assembly and the delivery roller of the delivery unit are driven by the main motor (M1). The upper roller is h[...]

3–88 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Target temperatures for the following size paper: A3 – A4 Argentine letter Ledger – Letter Government letter – Executive Government Korea B4 – B5 Oficio Equador Argentine Legal Argentine Letter R Officio – Oficio Boli[...]

3–89 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) The copier is equipped with three protection mechanisms to prevent the fixing heater from going ON at wrong timing. • The microprocessor monitors the voltage of TH1 and indicates ‘E000’ or ‘E001’ or ‘E002’ or ‘H[...]

3–90 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Operation of Fixing Assembly Tem- perature Control System Figure 3-443 Main motor(M1); Scanner cooling fan(FM2) Exhaust fan(FM1) Fixing roller heater(H1) Oil application solenoid(SL6) WAIT indicator (COPY START key indicator[...]

3–91 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 4. Detecting Overheating of the End of the Fixing Heater The rear end of the machine’s fixing heater is equipped with a sub thermistor (TH2) to detect and prevent overheating of the end of the fixing heater. This consideratio[...]

3–92 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) J. Detecting Jams As many as ten paper sensors (3 of which are in the cassette unit) are used to find out whether copy paper is moving normally. • Vertical path roller 1 paper sensor (PS16) • Vertical path roller 2 paper se[...]

3–93 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 1. Vertical Path Roller 1 Delay Jam Copy paper does not reach the vertical path roller 1 paper sensor (PS16) within a specific time after the cassette 1 pick-up clutch (CL2) has turned ON. 2. Vertical Path Roller Timing Jam Cop[...]

3–94 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3. Vertical Path Roller 2 Delay Jam Paper does not reach the vertical path roller 2 paper sensor within a specific time after the cassette 2 pick- up clutch (CL5) has turned ON. Figure 3-446 Sequence of Operations 4. Vertical P[...]

3–95 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 5. Pre-Registration Delay Jam (vertical path roller) Copy paper does not reach the pre-registration sensor (PS6) within a specific time after it has reached the vertical path roller 1 paper sensor (PS16). Figure 3-448 Sequence [...]

3–96 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 7. Separation Delay Jam Copy paper does not reach the separation sensor (PS7) within a specific time after the registration clutch (CL1) has turned ON. Figure 3-450 Sequence of Operations 8. Separation Timing Jam Copy paper rea[...]

3–97 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 9. Delivery Delay Jam Copy paper does not reach the delivery sensor (PS8) within a specific time after the separation sensor (PS7) has turned ON. Figure 3-452 Sequence of Operations Main motor (M1) Jam check Separation sensor ([...]

3–98 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 10. Delivery Stationary Jam Copy paper does not move past the delivery sensor (PS8) within a specific time after the delivery sensor has turned ON because of feeding faults. 11. Pick-Up Stationary Jam (cassette unit) Copy paper[...]

3–99 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 12. Pick-Up Delay Jam (cassette unit) Copy paper does not reach the cassette vertical path sensor (PS1cu, PS3cu, PS5cu) within a specific time after the cassette pick-up clutch (CL1cu, CL2cu, CL3cu) has turned ON because of fee[...]

3–100 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 13. Pick-Up Delay Jam (Paper Deck Pedestal-K1) Figure 3-456 14. Pick-Up Timing Jam (Paper Deck Pedestal-K1) Figure 3-457 INTR Copy Start key ON Vertical path roller paper sensor (PS2) Jam check Pick-up clutch (CL1) JAM flashed[...]

3–101 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) V . PO WER SUPPL Y A. Outline of Power Distribution Figure 3-501 Door switch P ower switch Po w e r plug FU2 T1 Main transf or mer High- voltage power supply unit DC controller Scanning lamp control circuit composite power sup[...]

3–102 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) B. Power Supply Circuitry The machine’s power supply unit uses a single main transformer (T101) to supply DC power. AC power is supplied to the DC power supply when the power switch (SW1) and the door switch are turned ON. S[...]

3–103 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. Detecting Errors on the Power Supply PCB The microprocessor (U402) and LED501 on the composite power supply PCB checks for errors; if an error is identified, the microprocessor (U402) communicates with the DC controller to [...]

3–104 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) D. Protection Mechanisms for the Power Supply Circuit The composite power supply PCB is equipped with an overcurrent detection circuit; its protection mechanism turns ON to stop the output if a short circuit occurs because of [...]

3–105 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) VI. SER VICE MODE A. Outline The machine’s service mode is grouped into the following six: B. Using Service Mode 1. Starting Service Mode 1) Open the front door, and insert the door switch actuator. • If you want to make c[...]

3–106 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 7. Recording on the Service Label Figure 3-601 shows the label attached behind the front door. Each machine is adjusted and set at the factory, and the appropriate values are re- corded on the label. Be sure to record any new [...]

3–107 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. Control Display Mode (‘1’) • To select an item, press the appropriate number on the numeric keypad and then the Start key. • To deselect an item, press the Clear key. • A press on the Start key while a description[...]

3–108 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) No. 101 Jam Location Display The type of jam is indicated using the copy counter. LED (ON) J1 J2 J3 J4 J5 J6 J7 J8 J9 JA Jb JC Type of jam Pre-registration delay jam Pre-registration stationary jam Separation delay jam Separat[...]

3–109 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) No. 120 Jam interval indication By pushing key 1 2 3 4 5 6 7 8 9 0 Table 3-605 Jam interval indication 120 First lates jam interval. Second latest jam interval. Third latest jam interval. Fourth latest jam interval. Fifth late[...]

3–110 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) D. I/O Mode (‘2’) • To start I/O display mode, press ‘2’ (numeric keypad) and then the AE key. • To select an item, press the appropriate number on the numeric keypad and then the Start key. • To deselect an item[...]

3–111 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) No. 214, No. 215, No. 216, No. 217, and No. 218 No. 214 215 216 217 218 Description ON: light-blocking plate present (paper absent) ON: light-blocking plate present (paper present) ON: light-blocking plate present (paper prese[...]

3–112 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) No. 219, No. 220, and No. 221 No. 219 220 221 Description ON: light-blocking plate present ON: light-blocking plate present ON: light-blocking plate present ON: light-blocking plate present See the table below. See the table b[...]

3–113 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) No. 222 Port P0 Display Description ON: paper present ON: paper present ON: at HP ON: at HP OFF: E220 error ON: hater ON detected ON: acknowledged LED 1-a 1-b 1-c 1-d 1-e 1-f 1-g Item Registration sensor (PS6) Delivery sensor [...]

3–114 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) E. Adjustment Mode (‘3’) • To start the mode, press ‘3’ on the numeric keypad and press the AE key. • To select an item, press the appropriate number on the numeric keypad and then the Start key. • To change the [...]

3–115 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) No. 312 313 314 315 316 318 319 320 321 322 323 Item Left/right margin adjustment (reduction; the movement of the blanking slide shutter) Primary output voltage correction (correction against the output voltage determined on A[...]

3–116 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) No. 324 325 326 327 328 Item Duplex paper stack timing adjustment Set-back roller reversal timing adjustment Lamp intensity adjustment Duplexing unit inlet arch adjustment Duplexing unit out let adjustment Settings 0 ~ 63 0 ~ [...]

3–117 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Description Execute the mode after supplying toner during installa- tion work. Use the mode when checking the nip or when adjusting the pressure of the lower fixing roller. Press the zoom +key or the zoom -key to change the va[...]

3–118 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Description See p. 3-131. 9-step: 0 17-step: 1 default: 0 (9-step) • Entering ‘1’ on the numeric keypad causes the indica- tion to change to ‘ON’, activating the auto energy saver function. • Entering ‘0’ on th[...]

3–119 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) No. 509 510 511 512 Item Universal cassette paper size storage (cassette 2) Universal cassette paper size storage (cassette 3) Universal cassette paper size storage (cassette 4) Universal cassette paper size storage (cassette [...]

3–120 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) H. Counter Mode (‘6’) • To start counter mode, press the ‘6’ key on the numeric keypad and press the AE key. • To select an item, press the appropriate number on the numeric keypad and then the Start key. • To de[...]

3–121 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) VII. SELF DIAGNOSIS The microprocessor on the machine’s DC con- troller is provided with a self diagnosis mechanism which checks the condition of the machine (sensors in particular) and indicates a code to identify the error[...]

3–122 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Possible cause • Composite power supply (faulty) • DC controller (faulty) • Scanner cable (displacement, tear) • Scanner home position sensor (PS1; faulty) • Scanner motor (M2; faulty) • DC controller (faulty) • [...]

3–123 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Initializing Back-Up Error Codes If the self-diagnosis mechanism has turned ON, you can reset the machine by turning OFF and then ON the power switch, unless the error is repre- sented by ‘E000’, ‘E001’, ‘E002’, ?[...]

3–124 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Code Cause • Cassette feeding unit control- ler (faulty) • Cassette feeding unit motor (faulty) Description • The motor clock signal is not detected within 1 sec after the pedestal motor drive signal has been generated. [...]

3–125 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Code Cause • Data communication with copier (faulty) • Pick-up motor (faulty) • Pick-up roller home position sensor (faulty) • Belt motor (faulty) • Belt motor clock sensor (S11; faulty) • Feeding motor (faulty) ?[...]

3–126 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Code Cause • CPU or communication IC on sorter controller (faulty) • Feeding motor (fails to rotate) • Staple guide bar swing motor (fails to rotate) • Stapler unit swing motor (fails to rotate) • Bin shift motor (fa[...]

3–127 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) VIII. ST AND ARDS AND ADJUSTMENTS A. Electrical 1 Adjustment after Replacing PCBs You must perform the following adjustments whenever you have replaced the following PCBs: a. DC Controller PCB 1) Start service mode (adjustment[...]

3–128 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) If you have replaced the AE sensor, scanning lamp, or DC controller or if you performed scanning lamp intensity adjustment (VR301), you must per- form • AE basic adjustment, • No. 410 scanning forward stop, • No. 408 sca[...]

3–129 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) • default: 0 settings: –26 to +26 • If the value is negative, ‘%’ is turned ON. To enter a negative value, press the ‘%’ key before entering the value. • The indication stops flashing and remains ON when the va[...]

3–130 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Remarks The lamp intensity is automatically adjusted so that the copies of the Test Chart will be made at density 5. q A lower setting in service mode causes the AE copies to be darker. w A higher settings in service mode caus[...]

3–131 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 4 Multifeeder Paper Width Sensor Adjustment In this adjustment, you will be storing the char- acteristics of the multifeeder paper width sensor using service mode No. 501. Perform the adjustment if you have replaced the sensor[...]

3–132 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Numeric keypad 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 5 Setting the Paper Size for the Universal Cassette You will be using service mode to set the paper size that is effective when the paper size lever of the cassette is position[...]

3–133 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6 Initializing the Back-Up RAM 1) Open the front door, and insert the door switch actuator into the door switch. 2) Press the service mode switch (SW850) with a hex key. • The machine enters service mode and indi- cates ‘1[...]

3–134 OPERATIONS AND TIMING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 MECHANICAL SYSTEM I. EXTERNALS ............................................. 4-1 A. External Covers ................................... 4-1 B. Control Panel ....................................... 4-2 C. Removing the Display Panel ...............[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

4–1 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM I. EXTERNALS A. External Covers Note: Remove the covers as necessary to clean, inspect, or repair the inside of the machine. Those covers that may be detached by merely removing their mounting screws are left out of the discussions.[...]

4–2 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM B. Control Panel 1. Removing the Control Panel 1) Remove the copyboard glass. 2) Remove the upper left cover. 3) Open the front door. 4) Pull the open/close lever, and open the body. 5) Remove the right cover. 6) Remove the left cov[...]

4–3 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM D. Fan 1. Removing the Exhaust Fan 1) Open the front door. 2) Pull the open/close door, and open the body. 3) Remove the relay connector q . Figure 4-108 4) Remove the screw w from the rear and the two screws from the front e . Figu[...]

4–4 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM E. Counter* * This may not be available for sale in same areas. 1. Installing the Option Counter (CNT2) 1) Open the top body. 2) Remove the inside upper cover. 3) Remove the two screws w , and disconnect the connector e ; then, remo[...]

4–5 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM II. DRIVE SYSTEM A. Scanner Drive System 1. Removing the Scanner Drive Motor 1) Remove the copy board glass. 2) Remove the spring q , the E ring w , the tensioner e , and the belt r . Figure 4-201 3) Remove the upper rear cover. 4) [...]

4–6 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 3. Assembling the Mirror Positioning Tool 1) Remove the screw from position B. Figure 4-208 2) Put the screw removed in step 1) to position A; then, tighten it slightly. 3) Pull the arm out of the main frame, and extend it until it [...]

4–7 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 4. Routing the Scanner Cable Caution: You must keep the mirror positioning tool (FY9- 3009) and the pulley clip (FY9-3010) near at hand when routing the scanner cable. Assemble the mirror positioning tool according to “Assembling [...]

4–8 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM Figure 4-211 Caution: When installing the cable spring, pay attention to the orientation of the spring. Be sure to install as indicated; if installed in the wrong direction, the hook tip of the spring can interfere with the cable. F[...]

4–9 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 5. Adjusting the Mirror Position (opti- cal length between No. 1 mirror and No. 2 and No. 3 mirrors) 1) Keep the mirror positioning tool near at hand. (See “Assembling the Mirror Positioning Tool.”) 2) Move the No. 1 mirror moun[...]

4–10 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM B. Lens Drive Assembly 1. Removing the Lens Drive Motor 1) Remove the upper rear cover and the right glass retainer. 2) Remove the copyboard glass. 3) Move the No. 1 mirror assembly q to the left. 4) Remove the two screws w , and r[...]

4–11 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 8) Remove the two screws o , and disconnect the connector !0 ; then, remove the lens motor !1 . Caution: When removing the screw o , disconnect the connector !0 first to avoid contact between the harness and the driver. Figure 4-22[...]

4–12 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 2. Routing the Lens Cable Figure 4-222 Lens Drive Assembly 1) Stop the lens cable at each pulley q , and wind it around the pulley w . 2) Move the tension pulley e , and attach the cable. 2 1 SL T ur n clockwise 3 times. 3[...]

4–13 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 3. Positioning the Change Solenoid Loosen the two screws t to adjust so that the gear r moves through the arm e in the direction of b until it stops when the steel core q of the solenoid is fully pushed in the direction of B, i.e.,[...]

4–14 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM C. Main Motor 1. Removing the Main Motor Unit 1) Disconnect the two connectors q , and remove the three mounting screws w ; then, remove the main motor unit e . Figure 4-224 2. Routing the Drive Belt Route the drive belt over the p[...]

4–15 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM III. PICK-UP/FEEDING SYSTEM A. Pick-Up Assembl y 1. Removing the Pick-Up Roller Unit 1) Remove the lower rear cover. 2) Remove the grip ring q , and remove the pick- up clutch w . Reference: When removing the pick-up clutch, pull i[...]

4–16 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 5. Adjusting the Left/Right Registration Make adjustments so that the image position is as indicated in Figure 4-308 when the Test Sheet is copied in Direct. a. Pick-Up from the Cassette Turn the screw q shown in Figure 4-307 to ad[...]

4–17 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM B. Multifeeder Assembly 1. Removing the Multifeeder Pick-up Roller Unit 1) Open the right door. 2) Remove the E-ring q , and pull out the bushing w . 3) Remove the two screws e . Figure 4-309 4) Remove the screw r , and remove the [...]

4–18 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 3. Points to Note When Installing the Multifeeder Pick-Up Roller When installing the multifeeder pick-up roller q , make sure that the side with a cross w on the collar is toward the rear. Figure 4-313 4. Removing the Separation Pa[...]

4–19 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 5) Remove the two E-rings i , and remove the two bushings o . 6) Remove the spring !0 of the actuator. 7) Remove the three screws !1 , and remove the solenoid mounting plate !2 . Figure 4-317 Caution: Take care so that the plunger [...]

4–20 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM C. Registration Roller Assem- bly 1. Removing the Registration Clutch 1) Remove the lower rear cover. 2) Remove the clip ring q , and disconnect the connector w ; then, remove the registration clutch e . Figure 4-322 2. Removing th[...]

4–21 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM Figure 4-324 Caution: At this time, take care so that the springs at the front and the rear will not fly away. 3) Remove the upper registration roller e by lifting it. Figure 4-325 3. Removing the Lower Registration Roller 1) Remov[...]

4–22 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM D. Feeding Assembly 1. Removing the Feeding Belt 1) Remove the mounting screw w , and remove the feeding center guide w . 2) Pull the feeding roll e toward the fixing assem- bly, and remove it. 3) Remove the feeding roll r , and re[...]

4–23 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM F . Duplexing Assembl y 1. Removing the Duplexing Assembly Inlet Unit 1) Remove the left cover. 2) Remove the delivery roller. 3) Disconnect the connector q , and remove the duplexing unit w inlet unit. Figure 4-330 2. Removing the[...]

4–24 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM G. Cassette Unit 1. Removing the Copier from the Cas- sette Unit 1) Disconnect the copier’s power plug. 2) Disconnect the cassette unit connector q from the copier. Figure 4-334 3) Holding the copier’s grips, remove the copier [...]

4–25 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 4. Points to Note When Installing the Pick-Up Roller When installing the pick-up roller q , install it so that the marking w shown in Figure 4-338 is toward the rear. Figure 4-338 5. Removing the Pick-Up Unit 1) Remove the rear cov[...]

4–26 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 7. Removing the Pick-Up Clutch 1) Remove the pick-up drive unit. (See “Removing the Pick-Up Drive Unit.”) 2) Remove the cassette motor. (See “Removing the Cassette Motor.”) 3) Remove the three screws q and bushing w ; then,[...]

4–27 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 4) Remove the six screws w and two E-rings e ; then, remove the support plate r . 5) Remove the two pick-up clutches t . Figure 4-347 11. Removing the Driver PCB (Cassette Module-A2/Cassette Pedestal-K1) 1) Remove the rear cover/up[...]

4–28 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM Figure 4-351 (left) 3) Slide out the paper deck slowly to the front. 3. Removing the Lifter Wire 1) Remove the paper deck. 2) Remove the deck front cover. 3) Remove the two screws q from the inside of the deck and remove the guide [...]

4–29 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 8) Remove the E-ring !1 ; then, remove the gear !2 , parallel pin, and pulley cover (front/rear in common). Figure 4-357 9) Remove the end of the wire from the pulley (front/rear in common). 10) Remove the fastener !3 from the wire[...]

4–30 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 14 3 1 4 2 4 3 2 6) Remove the six mounting screws t , and re- move the pick-up assembly. Figure 4-361 5. Removing the Pick-Up Roller 1) Remove the pick-up assembly. 2) Remove the stop ring q , and remove the pick- up roller w toge[...]

4–31 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 6. Points to Note a. The collars for the pick-up roller are identified by color; use the gold collar for the front, and the silver collar for the rear. b. Do not separate the rubber portion of the pick- up roller from the collar. 7[...]

4–32 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 8. Points to Note When installing the feeding roller q , make sure that the belt pulley w attached to the feeding roller is toward the rear of the copier. Figure 4-367 9. Removing the Separation Roller 1) Open the right door, and r[...]

4–33 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 11. Adjusting the Pressure of the Sepa- ration Roller If double feeding or pick-up failure occurs fre- quently during pick-up operation, adjust the posi- tion of the pressure spring for the separation roller. q if double feeding is[...]

4–34 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM I V . EXPOSURE SYSTEM A. Illuminating Assembly 1. Removing the Scanning Lamp/Fluo- rescent Heater 1) Disconnect the power plug. 2) Remove the copyboard glass. 3) Remove the upper rear cover. 4) Move the scanner unit to the center. [...]

4–35 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 3. Removing the Blank Exposure Lamp 1) Remove the blank exposure lamp. (See “Re- moving the Blank Exposure Assembly.”) 2) Remove the four screws q , and disconnect the connector w . Figure 4-405 3) Disconnect the connector e . [...]

4–36 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 6. Routing the Blank Shutter Cable Figure 4-410 7. Adjusting the Left/Right Margin Po- sition Turn the blank adjusting screw on the front plate shown in Figure 4-411 so that the measurements meet the standards. q CW turn: moves the[...]

4–37 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 9. Installing the Lens Heater 1) Remove the copyboard glass and the lens hood. 2) Remove the three screws, and disconnect the two connectors; then, remove the original size sensor q together with its mount. Figure 4-414 3) Install [...]

4–38 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM V . CHARGING SYSTEM A. Drum Unit 1. Removing the Drum Unit 1) Open the front door. 2) Pull the developing assembly releasing lever q to the front, and turn it clockwise. Figure 4-501 3) Open the top body. 4) Turn the knob w counter[...]

4–39 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM B. Primar y Charging Assem- bly 1. Removing the Primary Charging Unit 1) Remove the drum unit from the body. 2) Slide the locks q found on the top of the drum unit in the direction of the arrows. Figure 4-503 3) While rotating the [...]

4–40 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 3. Positioning the Primary Charging Roller Cleaning Solenoid Loosen the two screws used to fix the solenoid e in place and move the solenoid e in the the direction of arrow B so that the distance l in Figure 4-507 is 5.5 ±0.2 mm w[...]

4–41 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM D. Drum Heater* * This may not be available for sale in some areas. 1. Installing the Drum Heater 1) Remove the transfer guide from the copier. 2) Install the cord clamp w to the heater holder q . Figure 4-509 3) Put the heater uni[...]

4–42 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 1) Remove the developing assembly from the copier. 2) Remove the four screws q , and remove the developing cover w . Figure 4-602 3) Place a newspaper or the like on the floor or a desk top, and pour out the toner from the developi[...]

4–43 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 5) Remove the three E-rings u , and gear i , gear o , and gear !0 . Figure 4-606 6) Remove the screw !1 , and remove the butting roll !2 and roll case !3 . Figure 4-607 7) Remove the developing cylinder !4 . Figure 4-608 7 8 9 10 7[...]

4–44 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 8) Remove the side seal !5 . (both sides) Figure 4-609 Figure 4-610 4. Installing the Side Seal and the Blade Assembly 1) Clean the area where the side seal will be installed with alcohol. 2) Attach the side seal as indicated in Fi[...]

4–45 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM VII. FIXING SYSTEM 1. Construction Figure 4-701 2. Removing the Upper Fixing Unit 1) Open the front cover. 2) Open the top body. 3) Remove the two screws q , and remove the fixing assembly cover w . Figure 4-702 4) Disconnect the t[...]

4–46 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 5) Open the fixing shutter t with the screw driver inserted into the hole u , after lifting the fixing shutter. Figure 4-704 6) Pull out the upper fixing unit slowly toward the rear. Caution: Do not touch the fixing roller. 3. Remo[...]

4–47 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 15 14 13 13 13 10 11 12 8) Push the thermal switch t in the direction of the arrow, and remove it. Figure 4-708 9) Remove the screw y , and remove the metal plate u . Figure 4-709 10) Remove the screw i , and remove the ther- misto[...]

4–48 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM Figure 4-715 4) Remove the lower fixing roller r together with the bushing. Figure 4-716 5) Remove the bushing y from the front, and remove the HOT warning cover u . Figure 4-717 6) Remove the fixing cleaning roller by lifting it. [...]

4–49 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 7. Adjusting the Lower Fixing Roller Pressure (nip) If fixing faults are noted, make adjustments as follows: The nip is correct if it is as indicated in Figure 4- 718; otherwise, turn the bolt to adjust. Figure 4-718 Note: a and c [...]

4–50 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM B. Composite Power Supply PCB 1. Removing the Composite Power Sup- ply PCB 1) Remove the lower rear cover and the left cover. 2) Disconnect all connectors of the composite power supply PCB. 3) Disconnect J317 and J322 q of the DC c[...]

4–51 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM 5) Remove the grounding wire r , screw t , the remaining connectors,and cord guide hook y ; then, remove the composite power supply PCB u . Figure 4-803 C. AE Sensor PCB 1. Points to Note When Replacing the AE Sensor • After repl[...]

4–52 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) MECHANICAL SYSTEM[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 5 INST ALLA TION VI. CASSETTE HEATER KIT 5 INSTALLATION PROCEDURE .......................................... 5-16 A. Unpacking .......................................... 5-16 B. Installation (to copying machine) ....... 5-17 C. Installation (to a c[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

5–1 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) I. SELECTING THE SITE Keep the following in mind when selecting the site of installation; if possible, pay a visit to the user’s before the delivery of the machine. • The site must provide a power outlet that may be used exclusively [...]

5–2 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) II. UNP A CKING AND INST ALLING THE COPIER When a metal part is brought in from a cold to warm environment, droplets of water can develop on the surface of the part. This phenomenon is called condensation , and condensation in a copier c[...]

5–3 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Step 6 7 8 Work Open the front cover, and push the lever found on the left side up in the direction of the arrow to open the copier’s top body. Pull up the spacer (front and rear, 1 pc. each) of the fixing roller until a click is heard[...]

5–4 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Work Pull the developing locking lever toward the front, and turn it clock- wise to release it. Remove the knob, and remove the dummy drum from the copier. (Keep the knob for later.) Remove the screw, and remove the developing assembly s[...]

5–5 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) B. T urning On the Copier Work Connect the power plug to the power outlet. Turn on the power switch. Turn off the power switch. Supply toner according to the instructions given on the toner supply label attached behind the front door. Re[...]

5–6 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Work Execute ‘No. 401’ in service mode. • Press the service mode switch (SW850), ‘4’ on the keypad, AE Key, and Start key in sequence. Make sure that step 10 has been completed; then, turn off the power, and open the copier’s[...]

5–7 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. Checking the Images and Operations Work Place the Test Sheet on the copyboard, and check the copies. Make copies in manual mode. Make sure that the external covers are free of scratches and deforma- tions. Clean the area around the co[...]

5–8 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) D. Attaching the Drum Unit Step 1 2 3 4 Checks/Remarks Take care not to damage the surface of the drum and not to touch the primary charging roller. Be sure to insert the drum unit straight along the copier’s rail. Work Unpack the drum[...]

5–9 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) E. Changing the Cassette Size Change the cassette size to suit the user’s needs. 1) Slide the cassette out of the copier. 2) Move the length plate inside the cassette to suit the length of the paper size. Figure 5-201 3) Move the width[...]

5–10 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6) Set the paper size plates selected in step 4). Figure 5-205 Caution: If you are setting the plate for the position representing the universal (U) cassette, you must perform the work described for “universal cassette paper size sett[...]

5–11 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Step 1 2 3 4 5 Work Move the lens to the Direct position. Take out the drum unit. Fix the scanner in place. Tape the front door and delivery assembly in place. Place 11 × 17/A3 copy paper on the copyboard glass, and tape the copyboard [...]

5–12 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) I V . REPLACING THE DRUM UNIT Go through the following when replacing the drum unit: Step 1 2 3 4 5 6 7 Work Turn off the copier, and open the front door and the copier’s top unit. Release the developing assembly, and remove the knob [...]

5–13 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Remarks To enter settings, • Select ‘No. 313’ in service mode, and enter the setting recorded on the label (PRIMARY) using the keypad. (To enter ‘–’, press the % key before entering the setting.) Then, press the Start key to[...]

5–14 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) V . INST ALLING THE CONTROL CARD IV N Caution: Be sure to disconnect the copier’s power plug before starting the installation work. 1) Open the front cover 2) Open the copier’s top body by operating its open/close lever. 3) Detach t[...]

5–15 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 11) Connect the connector t of the Control Card IV N. Figure 5-504 12) Connect the copier’s power plug, and turn on its power switch to check the operation of the Control Card IV N. t[...]

5–16 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) VI. CASSETTE HEA TER KIT 5 INST ALLA TION PROCEDURE A. Unpacking Open the shipping box, and check to make sure that none of the parts shown in Fig. 5-601 is missing. Figure 5-601 q Cassette Heater .................... 1 w Mounting plate[...]

5–17 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Connector Support member Screw Connector cover Cassette heater Screws Mounting plate 1 Front cover Front lower cover Rear cover B. Installation (to copying machine) 1) Remove both top and bottom cassettes, and remove the front cover, fr[...]

5–18 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Connector on the heater Connector on the copier Screws Cassette heater Heater mounting hole 5) Put the screw back, and tighten it. 6) Insert the bend found at the rear of the heater into the heater mounting hole in the copier’s rear p[...]

5–19 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Switch for the cassette heater 12) Turn on the copier’s cassette heater switch. (Of the two switches, one at the rear; the heater will be supplied with power when the copier is switched off.) Figure 5-609 13) Close the top unit of the[...]

5–20 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Cassette heater Screw Mounting plate 2 Screws C. Installation (to a Cassette Feeding Module-A2/B2/ Cassette Feeding Unit-K1) 1) Remove the cassettes and all rear covers from the cassette feeding unit/pedestal. 2) Remove the copier’s r[...]

5–21 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6) Close the cover. 7) Connect the connector on the relay harness to the connector of the cassette heater (rear side plate of the cassette feeding unit/module). (Con- nect the side where the harness is bundled with a tie-wrap.) Figure 5[...]

5–22 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 10) Lead the other connector on the relay harness through the copier’s bottom plate as shown. Figure 5-617 11) Connect the connector on the relay harness with the copier’s connector. Figure 5-618 Copier's connector Molded membe[...]

5–23 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) • Cassette Feeding Module-A2 Figure 5-620 Caution: Make sure that the relay harness is outside the area indicated by dashed lines to prevent it from interfering with the feet of the cassette. • Cassette Feeding Module-B2 Figure 5-62[...]

5–24 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) VII. CASSETTE HEA TER KIT 7 INST ALLA TION PRO- CEDURE A. Unpacking Open the shipping box, and make sure that none of the parts indicated Fig. 5-701 is missing. Figure 5-701 1 2 3 4 5 6 7 8 q Cassette Heater .................... 1 w Pow[...]

5–25 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) B. Installation 1) Remove the copier’s bottom cassette. 2) Remove the two screws, and remove the copier’s front right cover; then, disengage the snap, and remove the front lower cover. Figure 5-702 3) Remove the left cover (4 screws[...]

5–26 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 7) Connect the relay harness to the heater. Figure 5-706 8) Install the heater to the paper deck, and fix it in place with a screw (black; M4 × 6). Figure 5-707 Relay harness Screw Heater Relay harness 9) Connect the relay harness to t[...]

5–27 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. Attaching the Ratings Label 1) Peel the backing sheet from the label, and attach the label to the rear cover of the pedestal as indicated. Figure 5-709 2) Connect the heater’s power plug to the power outlet. 3) Turn on the heater?[...]

5–28 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) B. Installation to the Copier Caution: This model may not be available for sale in some areas. Caution: Keep the following in mind when installing the RDD to the copier: 1. This Accessory is to be installed by a qualified personal. 2. M[...]

5–29 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 3) Remove the two screws y , and detach the face cover t from the copier’s rear cover. Fig. 5-804 4) Open the ferrite core u , wind the RDD’s cable i three times, and close the ferrite core u ; thereafter, connect the cable o on the[...]

5–30 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6) Remove the slack from the cable between the copier and the RDD; keep the excess cable to the RDD using the harness band !0 . Fig. 5-808 7) Shift bit 4 of the DIP switch 2 !1 to ON so that the communication mode between the RDD and th[...]

5–31 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Switch SW3-1 SW3-2 SW3-3 SW3-4 SW3-5 SW3-6 Setting AII OFF ON ON OFF ON OFF – Description selects push pulse for RDD circuit confihuration selscts dial pulse for RDD circuit confihuration sets dial pulse speed to 20 PPS sets dial puls[...]

5–32 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 12) After making sure that LED5 !8 (red) has come on, set the bits on the DIP switch 2 !6 on the RDD’s PCB as indicated in the table, and press the push switch 4 !7 to make sure that LED5 !8 (red) goes out, indicating that the RAM has[...]

5–33 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 16) Call up the service station to check if the initial settings have been successfully made; if the attempt has failed, reset the RAM once again starting with step 11) through 13). Important: You must confirm that the RDD’s settings [...]

5–34 INSTALLATION COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 6 MAINTENANCE AND SER VICING C. Paper Deck Pedestal-K1 ..................... 6-3 III. BASIC SERVICING ................................... 6-4 IV. SERVICING CHART ................................. 6-5 A. Scheduled Maintenance Work ............ 6-5 I[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

MAINTENANCE AND SERVICING COPYRIGHT © 1996 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6–1 I. PERIODICALL Y REPLA CED PAR TS Of the parts used in the machine, those given in the table must be replaced on a periodical basis to maintain a specific level of machine performance. (You must replace them regardless of th[...]

MAINTENANCE AND SERVICING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6–2 Parts name Pick-up roller Pick-up separation pad Multifeeder pick-up roller Multifeeder separation pad Halogen Lamp Fixing cleaning roller Oil-applying roller Transfer roller Fixing upper unit Lower fixing roller Upper fixin[...]

MAINTENANCE AND SERVICING COPYRIGHT © 1996 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6–3 No. 1 2 Parts name Pick-up roller Pick-up separation pad Parts No. FB2-2251-000 FG5-3614-000 Life (copies) 100,000 100,000 Q’ty 1 through 3 1 through 3 Remarks Actual copies made. Actual copies made. B. Cassette Feeding Mo[...]

MAINTENANCE AND SERVICING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6–4 Step 1 2 3 4 5 6 7 8 9 10 11 Work Meet the person in charge. Make test copies in DIRECT, REDUCE, ENLARGE. Clean the static eliminator and feeding assembly. Clean the fixing/delivery assembly: • paper guide plate • separa[...]

MAINTENANCE AND SERVICING COPYRIGHT © 1996 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6–5 : clean : replace ✩ : lubricate : adjust : check or clean I V . SER VICING CHAR T Caution: Do not use solvents or oils other than those indicated. A. Scheduled Maintenance W ork every 60,000 every year every 20,000 every 1[...]

MAINTENANCE AND SERVICING COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 6–6[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) APPENDIX A. GENERAL TIMING CHART ..................... A-1 B. SIGNALS AND ABBREVIATIONS ........... A-2 C. GENERAL CIRCUIT DIAGRAM ............... A-5 D. DC CONTROLLER CIRCUIT DIAGRAM . .. A - 7 E. COMPOSITE POWER SUPPLY CIRCUIT DIAGRAM ...................[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

A–1 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A. GENERAL TIMING CHART 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Sequence STBY INTR AER SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Pre-exposure lamp Primary charging (APVC) Primary charging bias Scanning motor (M2) Scanning l[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–2 B. SIGNALS AND ABBREVIA TIONS 1. Signals A/A* HORIZONTAL REGISTRATION / DELIVERY/ DUPLEX MOTOR PHASE A ACBIAS DEVELOPING AC BIAS VOLTAGE DETECTION signal AE AE SENSOR OUTPUT signal AE AEREF AE SENSOR REFERENCE signal AE ATTH AMBIENT TEMPERATURE THERM[...]

A–3 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) PWSW POWER SWITCH command RDOP RIGHT DOOR OPEN signal RGCLD REGISTRATION CLUTCH DRIVE command RGHP DUPLEXING UNIT REGISTRATION ROLLER HOME POSITION DETECTION signal RPD REGISTRATION PAPER DETECTION signal SCA/A* SCANNER MOTOR PULSE command A/A* SCB/B[...]

A–4 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

A–5 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) C. GENERAL CIRCUIT DIA GRAM not available[...]

A–6 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

A–7 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) D. DC CONTROLLER CIRCUIT DIAGRAM DC Controller (1/14) + 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 85 86 87 88 89 90 91 92 93 94 95 96[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–8 DC Controller (2/14) 1 26 2 23 21 24 25 3 4 5 6 7 8 9 10 20 22 27 ADD14 ADD13 ADD12 ADD1 1 ADD10 ADD9 ADD8 ADD7 ADD6 ADD5 ADD4 ADD3 ADD2 ADD1 ADD0 28 19 18 17 16 15 13 12 11 14 DA T A15 DA T A14 DA T A13 DA T A12 D ATA 11 DA T A10 D ATA 9 D ATA 8 CSR[...]

A–9 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) DC Controller (3/14) VCC R360 DA T A[8..15] WR RD CSIPC AST -RXD AST -TXD S-RXD S-TXD D-RXD D-TXD VCC R361 R362 R363 C317 R364 VCC R365 R366 Q312F 12 13 Q313 VCC R369 R368 R367 C318 R370 VCC R372 R371 Q312E 10 1 1 Q314 VCC R373 R374 R375 C319 R376 VC[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–10 DC Controller (4/14) RES RAMWR CSGA CSRAM CLCK VCC R384 VCC R382 VCC R380 WR RD VCC C330 VCC L6 INDUCTOR C326 OPTPHA OPTPHB OPTENB CSRAMOU VCC C329 C324 R383 PT[60..67] Q316 VCC VCC PT40 C328 PT41 VCC VCC VCC C327 PT57 PT56 PT55 PT54 PT53 PT52 PT51 [...]

A–11 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) DC Controller (5/14) + + + +24VF2 DUPLEX-COMA DUPLEX-COMB DUPLEX-A R409 TP8 Q334 VBG R410 TP9 Q335 VBG DUPLEX-B R41 1 TP10 Q336 VBG R412 TP1 1 Q337 VBG DUPLEX-A DUPLEX-B +34V LENS-COMA LENS-COMB LENS-A R397 TP12 Q318 GND34 R398 TP13 Q319 GND34 LENS-[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–12 DC Controller (6/14) +24V2 ZD303 Q338A 11 6 98 Q338C DSR-CL 31 4 Q338B 21 5 Q338D L WPU-CL 41 3 MF PUCL RGCL VBG Q338F 61 1 Q338G 71 0 Q338E 51 2 R418 PT10 PT20 PT12 PT16 PD3 PD7 Q339 VBG P APFAN APGND R419 C397 Q340 VCC PT23 Q344 R416 R417 Q345 +24[...]

A–13 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) DC Controller (7/14) PT51 PT27 PT17 21 5 Q348B CHNG-SL 41 3 Q348D TRCLSL 51 2 Q348E MFMRLSL 31 4 Q348C 61 1 Q348F 71 0 Q348G 11 6 Q348A ZD305 +24V2 VBG ZD306 PT26 11 6 Q349A 98 +24V2 PT1 1 31 4 Q349C PT15 41 3 Q349D UPFED-CL VBG 21 5 Q349B 61 1 Q349[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–14 DC Controller (8/14) PT51 PT27 PT17 21 5 Q348B CHNG-SL 41 3 Q348D TRCLSL 51 2 Q348E MFMRLSL 31 4 Q348C 61 1 Q348F 71 0 Q348G 11 6 Q348A ZD305 +24V2 VBG ZD306 PT26 11 6 Q349A 98 +24V2 PT1 1 31 4 Q349C PT15 41 3 Q349D UPFED-CL VBG 21 5 Q349B 61 1 Q349[...]

A–15 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) DC Controller (9/14) PH0 PH1 PH2 PH3 PH4 PH5 PH6 C338 C339 C340 C341 C342 C343 C344 R487 R489 R491 R493 R488 R490 R492 VCC R486 R485 R483 R482 R481 R480 RGPD P AP-EX LENS-HP BLNKST -HP L-CHECK CP-ACK R484 Q384 DTC1 14EU HTON VCC R497 R496 R353 MAIN-[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–16 DC Controller (10/14) VCC C337 P[30..37] P[30..37] P30 Q381H SEG0 P31 Q381G SEG1 P32 Q381F SEG2 P33 Q381E SEG3 P34 Q381D SEG4 P35 Q381C SEG5 P36 Q381B SEG6 P37 Q381A SEG7 81 1 71 2 61 3 51 4 41 5 31 6 21 7 11 8 VCC C335 P[60..67] PT67 Q382E SEG8 PT6[...]

A–17 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) DC Controller (11/14) M6 M7 M8 M10 M1 1 M12 M6 M7 M8 M9 M1 1 M12 M6 M7 M8 M9 M1 1 M12 M6 M7 M8 M9 M10 M1 1 P APER1 FEED1 MTRLOK TCNTRPR APS-L1 CPDL UPLIMIT FEED2 DROPN SRSW APS-L2 OPCNTPR UPCSZ-1 UPCSZ-2 UPCSZ-3 UPCSZ-4 APS-L3 CPDU L WCSZ-1 L WCSZ-2[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–18 DC Controller (12/14) – + – + – + – + – + – + – + M-TH VCC R556 R557 +24V2 R553 R554 C377 D328 R555 5 6 7 Q386B 3 2 1 Q386A D364 Q389 R567 Q354 PT41 RES HEA T -PROT PT53 Q393 R566 R568 VCC Q391 R569 HTTRIG D336 HTOFFOUT L-CHECK VCC Q32[...]

A–19 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) DC Controller (13/14) VCC J301 MOLEX 53258-0620 VBG GND GND34 + 34V VCC + 24VFI J302 J303 + 24VF1 + 24VF1 VBG VBG + 24VF1 VBG +34V GND34 VCC J304 J305 VCC VCC VCC DG7 DG6 DG5 DG4 DG3 DG2 DG1 DG0 SEG15 SEG14 SRG13 SEG0 SEG1 SRG2 SEG3 SEG4 SEG5 SEG6 S[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–20 DC Controller (14/14) + 24VF2 + 24V2 F302 J313 D-TXD GND D-RXD GND 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VCC CSEEP EEP-SCLK EEP-SI EEP-SO GND + 24V2 P APF AN VCC DERS GND VCC PU-FEDDT GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 J315 GN[...]

A–21 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) E. COMPOSITE PO WER SUPPL Y CIRCUIT DIA GRAM Composite Power Supply PCB (1/6) 1/6 C2 ++ + + + + + + COMP 3 2 4 1 7 6 5 8 1 5 4 2 8 9 15 9 8 7 6 11 18 17 2 3 1 4 1 2 3 4 5 1 2 2 1 1 2 3 2 1 4 5 1 3 2 HEA T -PRO T -BA TT -BA TT VCC-PRIN COLD-LINE HO T[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–22 Composite Power Supply PCB (2/6) U2B L4 -BA TT 24V + 5FBT + 31 2 9 14 + - C40 8 + + + + 24V 24V 36V + 5FBT + 24V 1 2 1 2 4 3 1 2 4 3 3 31 2 2 + - 5 31 2 1 + - 7 6 4 31 2 + - 13 11 10 O VERC MRES +24VSEC +30VSEC VFEEDBK -BA TT VREF-UI OSC-UI F AN-ON [...]

A–23 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Composite Power Supply PCB (3/6) 1 2 J3 1 2 MV -L MRES HV -L HV -L HV -H HV -H HV -L HV -H P-CTRL-S P-CUR-S PDC-S BIAS-S AC-BCAS ACBIAS-ON 24V + 5FBT 24V + 5FBT 24V F4 R64 R67 R75 R76 R87 R97 PDC-S R91 R88 R89 R90 R92 R86 R84 R85 R93 R94 R95 R98 R99[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–24 Composite Power Supply PCB (4/6) MV - L MV - H C70 C74 C76 C75 C77 C72 C71 C78 C80 C79 C81 J-CTRL J-L VL-CTRL U8A U8B 5 6 7 84 24V 24V + - 1 3 84 + - 2 R109 R1 10 R105 D36 Q21 D35 R100 R101 C73 D28 D29 D30 D31 D32 D33 D34 D37 D38 Q22 R104 R108 R103 [...]

A–25 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Composite Power Supply PCB (5/6) R123 R1 17 3 7 6 5 2 1 4 8 DIS THR CV Q TR VCC R GND 1 5 6 27 6 5 7 48 3 48 2 1 + - 5 48 6 7 + - 2 84 3 1 + - + - + - R150 T - FW - S T -CTRL-S T - REV - ON MV -L R120 R121 R125 R128 R124 R122 R1 18 R1 19 R130 R129 R[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–26 Composite Power Supply PCB (6/6) R160 J13 1 2 R166 R159 R158 R219 R165 R157 R164 R162 R161 R163 R167 R174 R175 R168 R176 R178 R181 R177 R182 R184 R204 R183 R169 R170 R171 R172 R173 R212 R214 R215 R216 R217 R218 R205 R213 C137 C136 C1 13 C1 12 C 111 [...]

A–2 7 COPYRIGH T © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) F . CONT R OL P ANEL KEY PCB Control Panel Key PCB (1/3) 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG 1 1 SEG12 SEG13 SEG14 DG0 DG1 DG2 DG3 DG4 DG5 DG6 DG7 VCC[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–28 Control Panel Key PCB (2/3) S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S1 1 S12 S13 S14 S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S1 1 S12 S13 S14 D812 L860 L883 L868 L869 L864 L861 L881 L889 L888 L887 L886 L885 L882 L880 D81 1 L862 L851 L838 L816 L815 L814 L884 L87[...]

A–29 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Control Panel Key PCB (3/3) 1 2 3 4 5 6 7 8 9 0 CLEAR STOP COPY RESET OK ENLARGMENT 1:1 REDUCTION DARK AUTO EXPOSURE LIGHT TWO-SIDE TWO-SIDE-NUM SORTER INTERRUPT % ADD-FUNC AMS ENERGY SA VING TRANSP COMB-NUM ZOOM + ZOOM - CASS-SELEC SW804 SW803 SW80[...]

A–30 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

A–31 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) G. AE SENSOR CIRCUIT DIA GRAM PD601 C601 +24V Q601 1 2 3 R601 8 4 R603 R602 R605 +24V J601 C602 4 1 +24V 6 5 R604 - + AEREF J601 3 J601 AEDA T A J601 2 8 4 7 Q601 - +[...]

A–32 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) H. INTENSITY SENSOR CIRCUIT DIA GRAM FROM POWER SUPPL Y J403 WHITE W1 W2 AC INPUT CABLE 1 2 J402 1 2 R402 R403 L401 140uH 7A D404 D403 D401 D402 2 1 Q401 3 4 R401 HTON GND + 5V + 5V HTON GND HTTRIG GND HTTRIG J401 4 1 3 2 1 3 3 21 2 4 5 6 R[...]

A–33 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) I. T ONER LEVEL DETECTION CIRCUIT DIA GRAM R769 D762 2 3 8 4 - + +24V 1 2 J752 J752 ADJ- ADJ+ 1 2 3 1 2 3 1 GNDB TNEMP 24VB SENSOR GNDB GNDB BIAS J754 J754 J754 J751 J751 J751 21 Q762 3 +24V R760 C757 R761 VR762 1 2 R762 +24V 1 R759 Q753 6 [...]

A–34 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) J . CASSETTE FEEDING MODULE-B2 GENERAL CIRCUIT DIAGRAM 3 2 1 2 1 13 12 11 10 9 8 7 6 5 4 3 2 1 1 2 3 4 6 7 9 10 11 12 17 18 19 20 25 26 27 28 8 1 2 1 2 3 4 5 6 2 1 J2 I/F Cable -1 J1 J100F J101F J102F J1 15F J1 14F CL CL1 J1 15FP J1 15P 1 2[...]

A–35 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) K. CASSETTE FEEDING MODULE-B2 DRIVER CIRCUIT DIAGRAM Driver Circuit Diagram (1/2) C104 +5V R100 D1 10 1 2 3 4 5 6 7 8 9 10 11 12 1 2 J1 10 J1 10 J1 10 J1 10 J1 10 J1 10 J1 10 J1 10 J1 10 J1 10 J1 10 J1 10 J1 15 J1 15 1 2 3 1 2 1 2 3 4 5 6 7[...]

A–36 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Driver Circuit Diagram (2/2) C100 + C109 Q102 +34V R102 R101 +5V R104 Q104 +5V R103 Q103 R132 C106 +5V R106 C108 C1 10 1 3 5 7 9 11 13 15 17 2 4 6 8 10 12 14 16 18 C1 1 1 C1 12 1 2 3 4 5 6 J1 14 J1 14 J1 14 J1 14 J1 14 J1 14 COM A A A CON B[...]

A–37 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) L. CASSETTE FEEDING MODULE-A2 GENERAL CIRCUIT DIAGRAM PS4 J2227F Paper Detector2 3 2 1 2 1 13 12 11 10 9 8 7 6 5 4 3 2 1 7 6 5 4 3 2 1 1 2 3 4 6 7 9 10 11 12 17 18 19 20 25 26 27 28 13 14 15 16 21 24 8 1 2 3 4 1 2 3 4 5 6 2 1 2 1 15 14 13 1[...]

A–38 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) M. CASSETTE FEEDING MODULE-A2 DRIVER CIRCUIT DIAGRAM Driver Circuit Diagram (1/2) +5V C104 C103 +5V R100 D120 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 1 2 1 2 J120 J120 J120 J120 J120 J120 J120 J120 J120 J120 J120 J120[...]

A–39 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Drivcr Circuit Diagram (2/2) C100 + C109 Q102 +34V R102 R101 +5V R104 Q104 +5V R103 Q103 R132 C106 +5V R106 C108 C1 10 1 3 5 7 9 11 13 15 17 2 4 6 8 10 12 14 16 18 C1 1 1 C1 12 1 2 3 4 5 6 COM A A A CON B B B Paper Feed Motor R108 C107 R131[...]

A–40 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)[...]

A–41 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) N. CASSETTE FEEDING UNIT -K1 GENERAL CIRCUIT DIA GRAM M 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 1 2 3 4 5 6 CL3 Cassette 5 pick-up clutch J102F 10 9 8 7 6 5 4 3 2 1 14 13 12 11 10 9 8 7 6 5 4 3 2 1 2 1 J2 I/F Cable T o copier J103F J101F J130F J[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–42 O . CASSETTE FEEDING UNIT -K1 Cassette Feeding Unit-K1 (1/3) D124 D123 D122 D121 6 5 4 3 2 1 12 11 10 9 8 7 6 5 4 3 2 1 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 13 12 11 10 9 8 7 6 5 4 3 2 1 +34V C102 C101 + D101 R101 Q103 +5V R103 1 2 1 2 3 4 5 6 7 8 9 [...]

A–43 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Cassette Feeding Unit-K1 (2/3) C1 10 Q1 10 +5V 20 10 VCC GND MTR-COM3 Q105 +5V R105 9 11 19 Q124 Q1 10 3 17 19 R124 Q134 Q1 10 18 2 1 R134 +5V R125 Q125 Q1 10 51 5 19 +5V R135 Q135 Q1 10 16 4 1 +5V R106 +5V 7 13 19 Q1 10 Q126 +5V 14 6 1 Q1 10 Q136 Q[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–44 Cassette Feeding Unit-K1 (3/3) COM A A A COM B B B +5V R309 Q302 +34V 1 3 5 7 9 11 13 15 17 2 4 6 8 10 12 14 16 18 1 2 3 4 5 6 7 Q301 OUT A V refA INA VSA RSA OUTB TdB GND INB TdA GND INA OUT A RSB VSB VrefB INB OUTB to A503 C308 R332 J134 J134 J134[...]

A–45 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) P . P APER DECK PEDEST AL-K1 GENERAL CIRCUIT DIA GRAM CL J92F 3 2 1 J94F 3 2 1 J95F 3 2 1 J91F 3 2 1 J93F 3 2 1 J90F 3 2 1 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 J86R J86P CL9 Deck lifter drive clutch J86F J87R J87P SL1 1 Deck pick-[...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) A–46 Q . P APER DECK PEDEST AL-K1 DRIVER CIRCUIT DIA GRAM CLR C104 C103 D1 13 Q1 13 5 6 PR D CK 2 3 Q120 4 1 +5V Q Q +5V R103 C105 C121 Q121 +5V 14 7 VCC GND C120 Q120 +5V 14 7 VCC GND 9 10 8 Q1 1 1 +5V Q1 14 R1 1 1 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9[...]

A–47 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) R. SPECIAL TOOLS See the table for the special tools used to service the machine in addition to the standard tools set. No. 1 2 3 Remarks For adjusting the distance between No. 1 and No. 2 mirrors. For fixing the scanning cable in place. To[...]

A–48 APPENDIX COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) S. SOL VENTS/OILS No. 1 2 3 4 5 6 7 Name Ethyl alcohol (Ethanol) Isopropyl alcohol (Isopropanol) MEK Heat-resistant grease Lubricating oil (low viscosity) Lubricating oil (low viscosity) Lubricating grease Conductive grease Description • [...]

COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) Prepared by OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1 OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION CANON INC. Printed in Japan REVISION 0 (FEB. 1998) (31625) 5-1, Hakusan 7-chome, Toride-shi Ibaraki, 302 -0023 Japan[...]

PRINTED IN JAPAN (IMPRIME AU JAPON) 0398S1.11-1 This publication is printed on 70% reprocessed paper .[...]