SATO M84PRO manuale d’uso

P N 9 0 0 1111 A M84PRO Thermal T ransfer Printer SERVICE MANUAL[...]

SA TO America, In c. 10350A Nations Ford Road Charlotte, NC 28273 Main Phone: (704)644-16 50 T ech Support Ho tline: (704)644-1 660 T e c h Supp o rt F a x: ( 70 7 ) 6 44 - 1 6 6 1 E-Mail: satosale s@satoamerica.com www .satoamerica.com © Copyright 2003 SA TO America, Inc. All rights reserved. No part of th is document may be rep roduced or issued[...]

PN 9001111A T ABLE OF CONTENTS INTRODUCTION General Description 1-2 Theory Of Operation 1-2 Switches And Indicators 1-4 Connection Ports 1-4 TECHNICAL DATA Physical Characteristics 2-1 Power 2-1 Enviromental 2-1 Print 2-1 Media 2-2 Ribbon 2-2 Sensing 2-2 Interface Modules 2-2 Processing 2-3 Character Font Capabilities 2-3 Bar Code Capabilities 2-4 [...]

PN: 9001111A REPLACEMENT PROCEDURES Main Circuit Board 7-1 Interface Board (Module) 7-3 Daughter Board 7-4 Memory Boar d (Card) 7-5 Power Board 7-5 Panel Board 7-6 LCD Board 7-7 Fuse 7-8 Motor 7-9 Platen Roller 7-11 Feed Roller 7-12 Timing Belt 7-14 Print Head 7-18 Label-out Sensor Switch 7-20 Label Position Sensor 7-22 Ribbon Sensor 7-23 Cutter Be[...]

M84Pro Service Manual PN: 9001111A Page 1-1 1 INTRODUCTION This manual is laid out consistent with the product discussed and provides all of the information required for general printer configuration, tr oublesho oting, and maintenance. For specialize d programming, refer to the Programming Manual also provided with the product. Step-by-step mainte[...]

Section 1: Introduc tion M84Pro Service Manual PN: 9001111A Page 1-2 GENERAL DESCRIPTION The M84Pro printer was designed for continuous in dustrial and commercial applications as self- evident with its uncompromising all-meta l housing, 203 to 609 dpi resolution, and la bel width capacity up to 5 inches wide. This printer uses standard SATO prog ra[...]

Section 1: Introduc tion M84Pro Service Manual PN: 9001111A Page 1-3 Figure 1-2, Primary Component s Figure 1-3, Primary Component s LCD BOARD I E E E 1 2 8 4 + R S B O A R D PANEL BOARD BELT CONFIGURATION DAUGHTER BOARD INTERFACE BOARD MAIN CIRCUIT BOARD POWER BOARD PRINT ASSEMBLY STEPPER MOTOR LABEL HOLD DOWN LABEL ROLL HOLDER RIBBON REWI ND SPIN[...]

Section 1: Introduc tion M84Pro Service Manual PN: 9001111A Page 1-4 SWITCHES AND INDICATORS The table below identifies and defin es printer switches and indicators for operator interface. The accompanying graphics display their lo cations and appearance. CONNECTION PORTS These ports are extern ally accessible and permit connection of the accesso r[...]

Section 1: Introduc tion M84Pro Service Manual PN: 9001111A Page 1-5 Figure 1-4, Switches, Indi cators, and Connection Port s LCD DISPLAY POWER LABEL RIBBON ERROR ON LINE DISPLAY PITCH OFFSET PRINT LINE FEED DSW1 DSW2 DSW3 INDICATORS LINE K EY POWER SWITCH DIP SWITCHES POTENTIOMETERS FEED KEY PANEL COVER REAR COVER 100V - 120V FUSE T3.15A H 250V EX[...]

M84Pro Service Manual PN: 9001111A Page 2-1 2 TECHNICAL DAT A All technical data deemed pertinent has been tabulated below for quick reference. Find the relative section header and then locate the specifi c type of technical data in th left column. PHYSICAL CHARACTERISTICS Width 10.4 Inches (2 65 mm) Height 13.4 Inches (341 mm) Depth 17.1 Inches (4[...]

Section 2: Technical Data M84Pro Service Manual PN: 9001111A Page 2-2 MEDIA Minimum Width .87 Inches (22 mm) Minimum Leng th Continuous T e ar-Off Cutter Dispense 0.24 Inche s (6 mm) 0.63 Inches (16 mm) 1.18 Inches (30 mm) 1.18 Inches (30 mm) Maximum Width 5.0 Inches (125 mm) T ype Die Cut Labels, Fan-Fold, T ag S tock or Continuous Maximum Caliper[...]

Section 2: Technical Data M84Pro Service Manual PN 9001111A Page 2-3 CHARACTER FONT CAPABILITIES MATRIX FO NTS U Font 5 dots W x 9 dots H S Font 8 dots W x 15 dot s H M Font 13 dots W x 20 dot s H XU Font 5 dots W x 9 dots H (Helvetica) XS Font 17 dots W x 17 dot s H (Univers Condense d Bold) XM Font 24 dots W x 24 dot s H (Univers Condensed Bold) [...]

Section 2: Technical Data M84Pro Service Manual PN: 9001111A Page 2-4 BAR CODE CAPABILTIES Linear Bar Codes Bookland (UPC/EAN Supplement al EAN-8, EAN-13 CODABAR Code 39 Code 93 Code 128 Interleaved 2 of 5 Industrial 2 of 5 Matrix 2 of 5 MSI POSTNET UCC/EAN-128 UPC-A and UPC-E T wo Dimemsional Data Matriix Maxicode PDF417 Micro PDF T runca ted PDF [...]

M84Pro Service Manual PN: 9001113A Page 3-1 3 INTERFACE SPECIFICATIONS This section presents the inte rface specifications and include det ailed information on how to properly interface the printer with the host system. INTERFACE TYPES The parallel interface is a high speed, bi-directional interface that conforms to the IEEE1284 specification (ECP [...]

Section 3: In terface Specific ations M84Pro Service Manual PN 9001113A Page 3-2 M ULTIPLE J OB B UFF ER The printer is able to continuou sly receive print j obs while compiling and printin g other jobs at the same time. It act s much like a “print buf fer” to ma ximize the performance of the host and the printer . When using the RS232C Serial [...]

Section 3: In terface Spe cifications M84Pro Service Manual PN: 9001113A Page 3-3 IEEE1284 PARALLEL INTERFACE The parallel interfa ce for the M-84PRO printers is a Plug-In Interface Mod ule that can be inst alled by the user . It conforms to the IEEE1284 sp ecification. It will automatically detect the I EEE1284 signals and operate in the high spee[...]

Section 3: In terface Specific ations M84Pro Service Manual PN 9001113A Page 3-4 RS232 SERIAL INTERFACE The High S peed Serial Interface is a Plug-In Interf ace Module that can be inst alled in the printer by the user . SPECIFICATIONS Asynchronous ASCII Half-duplex communication Ready/Busy Hardware Flow Control Pin 20, DTR Control Pin 4, RTS Error [...]

Section 3: In terface Spe cifications M84Pro Service Manual PN: 9001113A Page 3-5 R EADY /B USY F LOW C ONTROL Ready/Busy is the hardware flow control method for the serial interface on the M-84PRO printers. By raising/lowering the volt age level on Pin 20 of the RS232 C port, the printer notifies the host when it is ready to re ceive data. Pin 4 ([...]

Section 3: In terface Specific ations M84Pro Service Manual PN 9001113A Page 3-6 D ATA S TREAMS The data streams for X-On/X-Off and Ready/Busy flow co ntrol are constructed in the same way as they are for Ready/Busy flow control (<ESC>A . . Job#1 . . <ESC>Z<ESC>A . . Job#n . . <ESC>Z). An example of t his would be: <ESC&g[...]

Section 3: In terface Spe cifications M84Pro Service Manual PN: 9001113A Page 3-7 Optional Interface, pin 6 (DTR) and pin 5 (CTS) must be held high by the host. On e way to ensure these pins are always in the correct st ate is to tie pin 20 (DTR) to pin 6 (DSR) and pin 4 (RTS) to pin 5 (CTS) at the printer end of the cable. E NQUIRE (ENQ) Upon rece[...]

Section 3: In terface Specific ations M84Pro Service Manual PN 9001113A Page 3-8 P RINT S TOP (DLE) If a DLE (10 hexadecimal) is received by the printer , the print process is stopped and an ACK (06 hexadecimal) is returned if there are no e rrors and a NAK (16 hexadecimal) if a printer error exists. P RINT S TART (DC1) If the printer has been stop[...]

M84Pro Service Manual PN: 9001111A Page 4-1 4 ACCESSORIES INST ALLATION The following procedures pro vide in-depth inst ructions on the installation of all optional accessories. Each accessory is a purcha se option that may not apply to your setup . Refer to the list below to determine if any are applicable and their installation is requi red. If n[...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN 9001111A Page 4-2 Figure 4-1a, Label Cutter Inst allati on 7 Slide entire print mechanism fully toward t he rear . 8 Reapply two screws (7) to side frame bracket (8) and four screws (5) to back panel (6) to secure print mechanism. 9 Attach two hin ge halves (9, Figure 4-1b) to the front[...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN: 9001111A Page 4-3 1 1 Route the single connector end of cutter wiring harness (1 1, Figure 4-1c) throug h the printer side wall from the electric side to the mechanical side. Figure 4-1b, Label Cutter Inst allation 12 Connect wiring harness (1 1) to cutter as sembly (12), main circuit [...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN 9001111A Page 4-4 16 Place DSW3-1 in the up position and the DSW3-2 in the down position. 17 Load the printer with ribbon and media stoc k and close/inst all all housing covers. 18 Restore power and test cycle. Figure 4-1c, Label Cutter Inst allation DISPENSER INSTALLATION Installation [...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN: 9001111A Page 4-5 3 Remove the ribbon and la bel stock if applicable and leave t he print head open. 4 Remove screw (1, Figure 4-2a ) securing front cover (2) to the prin ter frame. Lif t away front cover (2). Figure 4-2a, Dispenser Inst allation 5 Route dispenser wiring harness (3) th[...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN 9001111A Page 4-6 Figure 4-2b, Dispenser Inst allation 6 Insert dispenser (4, Figure 4-2b) in place of remove d front cover (2) and secure using screw (1). 7 Connect dispenser wiring harness (3, Figu re 4-2c) with free end of wiring ha rness con- nected to CN10 port (5) of main circuit [...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN: 9001111A Page 4-7 12 Restore power and test cycle. Figure 4-2c, Dispenser Inst allation FLASH MEMORY INSTALLATION 1 Switch of f the printer and disconnect the power supply cord. 2 Open/remove the top, right, and lef t housing covers. 3 Remove three screws (1, Figure 4-3) securing daug [...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN 9001111A Page 4-8 Figure 4-3, Flash Card Inst allation 6 Apply and connect daught er board (2) to main circuit board (3) and secure using three screws (1). 7 Ensure power supply wiring harness (5) is fully connected to daugh ter board (2). 8 Factory Reset as directed in the Factory Rese[...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN: 9001111A Page 4-9 Figure 4-4a, Memory Exp ansion 8 Insert two long screws (6, Figure 4-4b) into main circuit board (4) from t he front. Figure 4-4b, Memory Exp ansion NOTE: It is advised that all wiring harn esses remain connected d uring expansion board inst alation to prevent the po [...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN 9001111A Page 4-10 9 Insert a standof f (7) onto ea ch screw (6) from the back side of main circuit bo ard (4). 10 Connect expansion board (8) to the back side of main circuit board (4). 1 1 Apply a nut (9) to the end of e ach screw (6). T ighten securely . 12 Apply a screw (10) into th[...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN: 9001111A Page 4-11 10 Press the LINE key to move the cursor under the yes o ption, then press FEED to select. 1 1 Enter all of the date dat a required for calender operation. 12 V erify proper operatio n and replace housing covers. Figure 4-5, Real-T ime Clock Inst allation LCD DISPLA [...]

Section 4: Acc essories Inst allation M84Pro Service Manual PN 9001111A Page 4-12 INTERFACE MODULE UPGRADE The printer is typically ordered with a high-speed parallel interface card installed. However, interface requirements sometimes change and an upgr ade is desired. All of th e interface cards are installed within the same slot located in the re[...]

M84Pro Service Manual PN: 9001111A Page 5-1 5 PRINTER CONFIGURATION This section provides configuration instructions . Figures 10-7 thro ugh 10-19 in the Diagrams & Schematics section provide s diagrams and charts on prin t operation sequence. DIP SWITCH PANELS There are two DIP switches (DSW2 and DSW3) located on the front panel under a protec[...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-2 Stop Bit Selection (DSW1-4): Selects the number of stop bits to end each byte transmission. Baud Rate Selection (DSW1-5, DSW1-6): Selects the data rate (bp s) for the RS232 port. Protocol Selection (DSW1-7, DSW1-8): Selects the flow control and status reporting protocols.[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-3 PRINTER SET UP Print Mode Selection (DSW2-1): Selects between direct thermal printing and thermal transfer printing. Sensor Type Selection (DSW2-2): Selects b etween the use of a transmissive label gap or a reflective eye-mark sensor. Head Check Selection (DSW2-3): When se[...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-4 Receive Buffer Selection(DSW2-5): Selects the operating mode of the receive buffer. Re fer to the Interface Specifications sectio n of this manual for more information. If a 10/100BaseT LAN card is inst alled, DS2-5 has the following definition s: Firmware Download (DSW2-[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-5 Status Select(DSW2-8): For emu lating earlier series software commands. Should b e used only if problems are encountered when using existing so ftware. This switch will also affect the settings selected by DSW1-7 and DSW1-8. Backfeed Sequence (DSW3-1, DSW3-2): Backfeed is [...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-6 Back-Feed Selection (DSW3-4): Whe n Back-Feed is enabled, the printe r will position the last printed label for dispensing and retract it before printing the ne xt label. The amount of backfeed offset is adjustable. External Signal Interface: Refer to the Interf ace Speci[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-7 Repeat Print via External Signal (DSW3-8): Allows the applicator or other external device to reprint the current label in the print buffer. DEFAULT SETTINGS All switches are placed in the Off default position for shippin g. This will result in the following operating confi[...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-8 Once the default operation is complete, a DEF AUL T COMPLETED message will be displayed on the LCD pane l. The printer should be powered of f while this message is being displayed (or after the beep is heard. This saves the default settings in the non-volatile memory wher[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-9 B ACKFEED O FFSET When a label is printed it must be correctly pos itio ned for dispensing and application. Thusly , the printer advances the label stock suf ficiently for the printed label to be dispensed. After the label has been removed for application, the label stock [...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-10 CONFIGURATION MODES MODE KEY SEQUENCE INITIAL DISPLA Y Normal POWER ONLINE QTY :000000 Advanced LINE + POWER ADV ANCED MODE T est Print FEED + POWER TEST PRINT MODE CONFIGURA TION Default Setting LINE + FEED + POWER DEF AUL T SETTING YES NO Clear Non-S tandard Protocol D[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-11 PITCH OFFSET + 00mm The label Pitch is th e distance from the leadin g edge (the edge that com es out of the printer first) of a la bel and the leading edge of the next label. The leading edge position of the lab el can be adjusted relative to the print head +/- 49 mm in [...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-12 ZERO SLASH YES NO This setting determ ines if a zero is prin ted with or without a slash. This setting can also be controlled via sof tware commands. When YES is selected, the printer internal fonts will have a slash through the center of the zero character . 1. Use the [...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-13 CALENDAR 00/00/00 00:00 1. Y ear - Press the L INE key to incr ea se and the FEED key to decrease the character value to the de sired option. The first di splay shown will have the cursor over the two digit year se lecti on. Press the Enter key to select the option and ad[...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-14 MEM SELECT (CC1) CARD MEMOR Y This selection determin es which type of optional expanded memory will be addressed as “CC1 " in the command st reams. The CA RD selection specifies the optional PCMCIA card as CC1 and the op tional Expand ed Flash ROM as CC2. The Mem[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-15 MEMOR Y ->CARDCOPY ALL <0MB> Y/N This selection allows the entire contents from the optional Exp anded Memory to be copied to the PCMCIA Memory card installed in the Memory Ca rd slot. 1. Use the LINE key to step the cursor to desired option. If Y es is selected,[...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-16 CARD->MEMOR YCOPY COMPLETED 4. Press the FEED key to advance to the next display when th e copy process is complete. CARD COPY/FORMA T XXXXXXX ERROR 5. If an error is encountered in t he copy pr ocess, one of the followi ng messages will be displayed on the second lin[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-17 SERVICE MODE The Service Mode is ente red from th e Card Mode through the Advanced Mode. The Service Mode allows the operator to set up the basic o peration para meters of the printer . LCD DISPLAY DEFINITION V 05.00.03.00 INITIALIZING Displays the firmware duri ng the in[...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-18 GAP [X.XXV] INPUT [X.XV] GAP - When setting the “gap” threshold, the voltage sh own on the top line of the display must be measured with nothing but the backing in the sensor and then again with a label still attached to the backing. T he formula to be used for setti[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-19 EYE [X.XXV] INPUT [X.XV] EYE - When setting the “eye” threshold, the voltage must be measured with nothing but the label un der the sensor and then a gain with the printed “eye ” mark under the sensor . The formula for this is: (High V oltage Level + Low V oltage [...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-20 FORW ARD/BACKFEED DIST ANCE XXXmm 3. If Manu al option is se lected, use t he Cursor keys to advance the distance to the desired setting. Each tim e the CURSOR key is pressed, the distance will advance 1 mm. The maximum distance is 255 mm. 4. Press the FEED key to select[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-21 IEEE1284 ACK SIGNAL 00.5 If the printer is placed in the Si ngle Item Buf fer Mode (DSW2 -5 = ON), this selection allows the wid th of the IEEE1284 ACK p ulse to be set. In the M ulti- Item Buffer Mode, this display will be skipped.The range is 0.5 µsec to 10 µsec. 1. U[...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-22 . TEST PRINT MODE The T e st Print Mode offers 4 different status labels for troubleshooting. If DSW3-5 is in the OFF position, the T est P rint cycle must be initiated with a Print St art signal on the EXT con nector Y ou ente r the T est Print Mode by pre ssing the FEE[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-23 DEF AUL T SETTING COMPLETED When the printer has completed the rese t process it will be ep 3 times and the Default Setting Completed di splay will appear. At this ti me the printer is in the default config uration.To exit th e Default Setting Mode, power the p rinter off[...]

Section 5: Printe r Configuration M84Pro Service Manual PN: 9001111A Page 5-24 CLEAR NON-STANDARD PROTOCOL The sta ndard protocol codes used by the printer can be modified to accomodate the requirement s of differ ent host systems. However , if the printer is to be used with a system tha t does not use the custo m protocol code s, they can be clear[...]

Section 5: Printe r Configuration M84Pro Service Manual PN 9001111A Page 5-25 HEX DUMP MODE In addition to the T est Print Labels, the printer can print the cont ents of the receive buf fer in a hexadecimal format to allow the dat a stream to be examined for errors and trouble shooting. LCD DISPLAY DEFINITION V 05.00.03.00 INITIALIZING Displays the[...]

M84Pro Service Manual PN: 9001111A Page 6-1 6 TROUBLESHOOTING ERROR SIGNALS The LED display, Front Panel LED Indicators and Bu zzer provide a visual and audio indication of the type o f error encoun tered. Find the correc t symptom in the table below to reference the correct response. LED LCD MESSAGE BEEP ERROR COND ITION TO CLEAR Error on Machine [...]

Section 6: Troubleshooting M84Pro Service Manual PN 9001111A Page 6-2 TROUBLESHOOTING TABLE Use the tables below to isolate problems based on th eir symptoms. Refer to their relative procedures as applicable to correct the probl em. The troubleshooting t able below includes t he following general symptom descriptions: Image V oids No Ribbon Movemen[...]

Section 6: Troubleshooting M84Pro Service Manual PN: 9001111A Page 6-3 SMEARED PRINT IMAGES Poor label quality . Use hi gh quality label stock. Poor ribbon quality . Use genuine SA T O ribbons. Foreign material o n print head and pla ten roller . Clean print head and platen roller . Foreign materia l on labels. U se high quality label stock. Excess[...]

Section 6: Troubleshooting M84Pro Service Manual PN 9001111A Page 6-4 TROUBLESHOOTING PROCEDURES The procedures below provide in depth instructions on symptom analysis of specific components. If it is suspected that the problem lies within one of these components, refer to the relative instructions. RS232 S ERIAL I NTERFACE • Ensure the serial ca[...]

Section 6: Troubleshooting M84Pro Service Manual PN: 9001111A Page 6-5 • Ensure the Baud rate, Parity , Data Bits, and S top Bits are consistent with that of co mputer . Print a Configuration T est Label to det ermine the RS232 settings. • Ensure the printer is receiving from the computer using a Receive Buf fer Hex Dump. Refer to the Hex Dump [...]

Section 6: Troubleshooting M84Pro Service Manual PN 9001111A Page 6-6 • Ensure the data stream is correct, all letters of command code s are in upper case, and with- out spaces. • Ensure protocol codes are set for standard or non-standard and that they are consistent with the data stream. • Ensure the printer is receiving from the computer us[...]

Section 6: Troubleshooting M84Pro Service Manual PN: 9001111A Page 6-7 If using a bridge or router located between the print server and the host computer, ensu re that the device is setup to allow the print server to send and receive data from the host. For example, a bridge can only be set up allow certain types of Ethernet addresses to pass throu[...]

Section 6: Troubleshooting M84Pro Service Manual PN 9001111A Page 6-8 7 T roubleshoot and/or replace compo nents as directe d in their respective procedures. Figure 6-1, TP T est Module Usage NOTE: V oltage readings must be +/ - 10% of specification for prop er operation. DIAL APPLICATION DESCRIPTION 0 th rough 3 Used to determine voltage. Refer to[...]

Section 6: Troubleshooting M84Pro Service Manual PN: 9001111A Page 6-9 RIBBON SENSOR OPERAT ION VERIFICATION Verification that the ribbon sensor is operational may be achieved using the Operator Pane l located on the front housing cover. 1 Access the dip switches located on the Operator Panel. 2 Record all dip switch positions. 3 Place DSW2-1 dip s[...]

Section 6: Troubleshooting M84Pro Service Manual PN 9001111A Page 6-10[...]

M84Pro Service Manual PN: 9001111A Page 7-1 7 REPLACEMENT PROCEDURES The M84PRO Printer contains replaceable co mponents and sub-assemblies. This se ction contains step-by-step instructions for the removal and replacement of t hose primary components and sub-assemblie s that are subject to wear or da mage. MAIN CIRCUIT BO ARD REPLACEMENT The main c[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-2 4 Remove two screws (3) securing interface b oard (4) to printer housing. 5 Withdraw interface board (4) from its connection wit h main circuit board (1). 6 Remove three screws (5) securing daughter board (2) to main circuit b oard (1). 7 Withdraw daughter board (2) from [...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-3 INTERFACE BOARD REPLACEMENT 1 Switch off the p rinter and disconnect the power supply cord. 2 Open/remove the top, right, and lef t housing covers. 3 Remove two screws (1, Figure 7-3) securing interface board (2) on the exterior back side of printer . 4 Carefully withdra[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-4 DAUGHTER BOARD REPLACEMENT 1 Switch of f the printer and disconnect the po wer supply cord. 2 Open/remove thetop, right, an d left housing co vers. 3 Disconnect the print head wiring harn ess (1, Figure 7-4) from daughter board (2). 4 Remove the three screws (3) securing [...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-5 MEMORY CARD REPLACEMENT The optional me mory card is direct connected to th e main circuit board behin d the daughter board. To replace the memory card, follow the daughter board re placement procedures for ca rd access. Then pull the mounting brackets away from the memo[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-6 Figure 7- 5, Power Boa rd Replac ement PANEL BOARD REPLACEMENT 1 Switch of f the printer and disconnect the po wer supply cord. 2 Open/remove the top, right, and lef t housing covers. 3 Locate pa nel board (1, Figure 7-6) mounted to th e interior of the front cover . 4 Di[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-7 Figure 7-6, Panel Boa rd Replacement LCD BOARD REPLACEMENT 1 Switch of f the printer and disconnect the power supply cord. 2 Open/remove the top, right, and lef t housing covers. 3 Locate LCD board (1, Figu re 7-7) mounted to the interior of the fro nt cover . 4 Disconne[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-8 Figure 7-7, LCD Board Replacement FUSE REPLACEMENT The M84Pro Printer has three fuses; one is ex ternally accessible a nd is wired to the power supply while the other two are located in ternally and directly connected to the main circuit board. There is an additional fuse[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-9 Figure 7-8, Fuse Replace ment MOTOR REPLACEMENT The stepper motor transmits motion to the prin t mechanism for precise print positioning. The energized motor provides torque to the label feed roller, the pla ten roller, the ribbon feed roller, and the ribbon rewind spind[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-10 5 Remove belt from the mo tor shaft and wit hdraw motor (1) to the media side of the printer . 6 Disconnect wiring harness (3 ) from motor (1). 7 Remove two screws (4) securing damp er (5) and heat plate (6) to motor (1). 8 Lift away dampe r (5), heat sink (6) and withdr[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-11 10 Secure heat plate (6) and damper (5) respectively to motor (1) using two scre ws (4). 1 1 Reconnect wiring harness (3) to motor (1). 12 Apply motor (1) against the printer frame oriented so that their mounting orifices are aligned. 13 Apply drive belt to motor spindl[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-12 12 Secure each end of platen roller (1) with clamps (3 ) and screws (2). 13 Insert pulley (5) onto the left spindle an d apply inner belt (not shown). 14 Apply outer belt (not shown) to gear (5) and e-clip (4) to lef t roller spindle. 15 Adjust belt tension as required i[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-13 Figure 7-1 1, Feed Roller Replacement 4 Loosen two screws (2) to release belt tension on drive roller (1). 5 Loosen or remove two screws (3) securing clamp (4) to the right end of drive roller (1). 6 Remove e-clip (5) and th e outer belt (not shown) from the left end of[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-14 1 1 Insert the short spindle of drive roller (1) into housing frame so that it rests on the far side of the label ramp secure using clamp (4) and two screws (3 ). 12 Insert clamp (8) onto the left end of drive roller (1) and secure to the frame using screw (7). 13 Insert[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-15 Figure 7-12a, Motor and Fee d Belt Replacement Figure 7-12b, Motor and Feed Belt Replacement 6 Remove e-clip (7, Figure 7-12b), pin (8), and bushing (9) from pulley bracket (2) to free transition pulle y (10), and belt s 3, 4. I N T E R F A C E M A I N C I R C U I T B O[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-16 Figure 7-12c, Platen Roller Belt Replacement 7 Remove screw (1 1, Figure 7-12c) and loosen screw (12) to free pulley tension bracket (13). 8 Remove platen roller belt (14) and ribbon rewi nd belt (15) fro m feed roller pulley (16) and platen roller pulley (17) respective[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-17 Figure 7-12d, Ribbon an d Rewind Belt Replacement 14 Apply belt (14, Figure 6-12c) to the large diameter of pu lleys (17) and (16). 15 Apply the lower end of belt (15) to the smaller diameter of pulley (17). 16 Apply pulley tension bracket (13) so that its pulley is ori[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-18 Figure 7-13, Wiring Harness Conn ection PRINT HEAD REPLACEMENT If the print head beco mes damaged or wears out, it can be easily removed and replaced without having to make critical adjustmen ts. Before replacing the print head, che ck the head counter values by printing[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-19 6 Connect the power harness to the large r connector (6) and the thermal head harness to the smaller connector (7) of replacement print head (1 ) with the head oriented downwa rd. 7 Apply print head (1) with mountin g plate (4) attached, to lower side of print asse mbly[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-20 LABEL-OUT SENSOR SWITCH REPLACEMENT The label-out sensor switch detects the presence of print media and sends an error signal to the processor should the absence of print media be detected. The switch is of a simple on/off variety that is wired. If print media is present[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-21 7 Disconnect the sensor switch wiring harness from the main cir cuit board and withdraw switch (1) from printer . 8 Feed the wiring harness of repla cement switch (1) through the slot adjacent to the motor . 9 Apply switch (1) against the printer frame and secure using [...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-22 LABEL POSITION SEN SOR REPLACEMENT 1 Switch of f the printer and disconnect the po wer supply cord. 2 Open or remove the top, left, right, and front housing covers. 3 Remove ribbon and media to provid e free access to label position sensor (1, Figure 7-17). Figure 7-17, [...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-23 Figure 7-18, Wiring Ha rness Connection RIBBON SENSOR REPLACEMENT 1 Switch of f the printer and disconnect the power supply cord. 2 Open or remove the top, left, and right housing covers. 3 Remove ribbon to allow access to ribbo n sensor (1, Figure 7-21) and supply asse[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-24 13 Install ribbon, restore power , test cycle, and inst all/close housing covers. Figure 7-21, Ribbon Sensor Replacement Figure 7-22, Wiring Harness Conn ection NOTE: Figures 10-1 and 10-3 of the Daigrams & Schematics section pro- vides guidance on housing co ver and[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-25 CUTTER BELT REPLACEMENT The cutter assembly is an accessory to the printer. As a purchase option, the cutter assembly may not apply to the printer in question. The cutter assembly mounts to the face of the printer in place of the standard front co ver. 1 Switch of f the[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-26 Figure 7-23a, Cutter Belt Replacement Figure 7-23b, Cutter Belt Replacement 10 3 2 11 13 12 4 6 5 8 7 1 15 14 15 16 11 18 18 17 9 13 10 19 20 12[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN: 9001111A Page 7-27 CUTTER CIRCUIT BOARD REPLACEMENT 1 Switch of f the printer and disconnect the power supply cord. 2 Remove cutter assembly (1 , Figure 7-24) from the printer . 3 Disconnect all wiring harnes ses from circuit board (2). 4 Remove two screws (3) from p aper guide plate (4).[...]

Section 7: Replacement Proced ures M84Pro Service Manual PN 9001111A Page 7-28 5 Remove two nut s (5), lock washers (6), and flat washers (7) fro m circuit board (2). 6 Manipulate damaged cutter circuit b oard (2) from cutter assembly (1). 7 Retrieve two nylon spa cers (8) from within cutter assembly (1). 8 Apply and hold two screws (3) to pape r g[...]

M84Pro Service Manual PN: 9001111A Page 8-1 8 ADJUSTMENT PROCEDURES The SATO M84pro Printer incorpo rates a series of sub-assemblies that, in conjunct ion, comprise the total printer assembly. Many of these sub-assemblies are desig ned to be adjustable to maintain optimum performance of the printer throughout its life. This service manual section a[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN 9001111A Page 8-2 PRINT HEAD POSITION ALIGNMENT Print head position has a direct impact on print quality. An improperly aligned print head will cause the print to be inconsist ent across the label. The following pro cedure will provide guidance on print head alignmen t. Figure 8-2, Prin t He[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN: 9001111A Page 8-3 1 Remove ribbon as applicable to gain access to the top side of print head (1, Figure 8 -2). 2 Loosen thumbscrew (2) and two set screws (3). 3 Load printer with media and ribb on as applicable and latch (4) print head (1) closed. 4 Begin continuous printing of self-test la[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN 9001111A Page 8-4 4 Begin continuous printing of self-test labels. 5 Loosen pa per guide thumbscrew (1, Figure 8-3) and ad just guide fully outward. 6 Loosen set screw ( 2) to allow the right side of print he ad (3) to be adjusted. 7 Manipulate screw (4) to adjust print head (3) while observ[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN: 9001111A Page 8-5 Figure 8-3, Print Head Balance Ad justment RIBBON GUIDE PLATE ADJUSTMENT Ribbon wrinkling has a negative impact on print quality and should be avoided. If ribbon wrinkling is observed across the ribbon guide plat e, adjustment may be necessary. Before adjusting the ribbon [...]

Section 8: Adjustment Procedures M84Pro Service Manual PN 9001111A Page 8-6 7 Ensure screw (5) is secure on the lef t side of guide plate (4). 8 T est cycle and readjust as nece ssary . Figure 8-4, Ribbon Guide Plate Adjustment FEED ROLLER ADJUSTMENT Feed roller adjustmen t is used for fine tunin g label tracking. By adjus ting the pressure between[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN: 9001111A Page 8-7 5 Place the strip between the upper and lower fe ed rollers on one end and latch media cover . 6 Slowly pull the tension gauge suf ficiently enough to t ake a reading. 7 Repeat steps 5 an d 6 for the opposite end of feed roller assemblies. 8 Adjust lower roller (1, Figure [...]

Section 8: Adjustment Procedures M84Pro Service Manual PN 9001111A Page 8-8 TIMING BELT ADJUSTMENT The following procedure covers the adjustment of al l timing belts within the prin ter. Not included, is the adjustment procedure for th e optional cutter assembly. However, the adjustmen t technique is exactly the same as here. Remove the cu tter ass[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN: 9001111A Page 8-9 6 Loosen two screws (10) and manipulate bracke t (1 1) to tighten ribbon rewind belt (1 2). Retighten screws (10). 7 Restore power and test cycle to ensure proper function. 8 Close/replace housing covers. PITCH SENSOR SETUP FOR NOTCH TAGS The following procedure applies t [...]

Section 8: Adjustment Procedures M84Pro Service Manual PN 9001111A Page 8-10 4 T urn the knurled kno b of sensor adjustment s haft (2) to late rally adjust sensors (3) and (4). 5 Close/inst all housing covers. Figure 8-8, Label S tock Diagram PRINT POSITION ADJUSTMENT There are three methods of prin t position adj ustment. Two of the me thods allow[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN: 9001111A Page 8-11 Coarse print position adjustment should be thro ugh the software provided with the printer a nd fine adjustment should be performed by manually adjusting the PITCH potentiometer located on the printer front panel cover. 1 T urn OFFSET potentiometer (1, Figure 8 -9) locate[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN 9001111A Page 8-12 4 T urn dial (3) on test modu le (1) to position number 5. 5 Connect the positive (+) probe of the multimet er to pin SIG (4) on test module (1). 6 Connect the negative (-) probe of the multimet er to pin GND (5) on test module (1). 7 Ensure the millimeter is set for DC vo[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN: 9001111A Page 8-13 EYE-MARK SENSOR ADJUSTME NT This adjustment will require the use of a multimete r and the TP Test Module. 1 Open/remove the top, right , and left housing covers. 2 T urn the VR5 potentio meter fully counter-clockwise. 3 Connect test module (1, Figure 8-9) to main circuit [...]

Section 8: Adjustment Procedures M84Pro Service Manual PN 9001111A Page 8-14 OFFSET LABEL STOP POSITION ADJUSTMENT The following procedure provides for fine adju s tment of the label stop position for Tear-Off, Cutter, and Dispense Modes. The Feed/Backfeed is adjuste d with the Offset potentiometer located on the front panel. The Offset adjust ment[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN: 9001111A Page 8-15 PRINT DARKNESS ADJUSTMENT Print darkness is adjusted by use of the PRINT potentiome ter located on the Operator Panel of the front housing cover. 1 T urn the PRINT potentiometer t o the center position. 2 T urn on the printe ries press the LINE key to go of f-line. 3 Pres[...]

Section 8: Adjustment Procedures M84Pro Service Manual PN 9001111A Page 8-16[...]

M84Pro Service Manual PN: 9001111A Page 9-1 9 FACTORY RESET S This section of the service manual covers instructio ns on how to return the printer to its f actory settings. The instructions are separated into differing categories of interest. FACTORY SETTINGS / TEST PRINT 1 Record all dip switch positions. 2 Place all dip switches in the OFF positi[...]

Section 9: Factory Res ets M84Pro Service Manual PN: 9001111A Page 9-2 1 1 Press the FEED key to test print. Press the FEED key again to stop printing. 12 V erify that the coun ters on the test print have re set to 0.0 km. 13 Power Off the printer and confirm that all switches a re in the Off or down position. CLEAR HEAD COUNTERS 1 Record all dip s[...]

Section 9: Factory Res ets M84Pro Service Manual PN 9001111A Page 9-3 1 1 Press the FEED key to test print. Press the FEED key again to stop printing. 12 V erify that the coun ters on the test print have re set to 0.0 km. 13 Power Off the printer and confirm that all switches a re in the Off or d own position. CLEAR DISPENSER COUNTER 1 Record all d[...]

Section 9: Factory Res ets M84Pro Service Manual PN: 9001111A Page 9-4 12 V erify that the coun ters on the test print have re set to 0.0 km. 13 Power Off the printer and confirm that all switches a re in the Off or down position. CLEAR CUTTER COUNTER 1 Record all dip switch positions. 2 Place all dip switches in the OFF position. 3 Place the DSW2-[...]

Section 9: Factory Res ets M84Pro Service Manual PN 9001111A Page 9-5 12 V erify that the coun ters on the test print have re set to 0.0 km. 13 Power Off the printer and confirm that all switches a re in the Off or d own position. CLEAR EEPROM 1 Record all dip switch positions. 2 Place all dip switches in the OFF position. 3 Place the DSW2-4 in the[...]

M84Pro Service Manual PN: 9001111A Page 10-1 10 DIAGRAMS & SCHEMATICS HOUSING COVER REMOVAL & INSTALLATION Figure, 10-1, Housing Cover Re moval & Inst allation Screws x2 Screws x2 Screws x 2 Screws x4 Screws x 1[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN: 9001111A Page 10-2 MEDIA LOADING Figure 10-2, Media Loading RIBBON LOADING Figure 10-3, Ribbon Loading M E D I A M E D I A M E D I A M E D I A M E D I A R I B B O N[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN 9001111A Page 10-3 PAPER SPECIFICATIONS Figure 10-4, Paper S pecifications 3mm 3mm 14mm 1.5mm La b e l Ti c k e t P a p e r F e e d in g D ir e c t io n 3mm 14mm 14mm 1.5mm[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN: 9001111A Page 10-4 ACCESSORIES & SE NSORS LOCATION Figure 10-5, Accessories & Sensors Loc ation Diagram Cutter Tear-Off Dispenser Thermal Head Head Width (112 mm) Printable Width (104 mm) Unprintable Area (3.2 mm) Gap Eye-Mark Gap/Eye-Mark Paper End Switch 11.5 mm 16.0 mm 19.5 [...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN 9001111A Page 10-5 PRINT POSITION REFERENCE DIAGRAM Figure 10-6, Print Position Ref erence Diagram GAP PAPER FEED DIRECTION EYE-MARK LABEL LABEL LABEL LABEL Base Reference Print Po sition Base Reference Print Position CONTINUOUS PRINTI NG TEAR-OFF MODE Print Po sition Base Reference LAB[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN: 9001111A Page 10-6 PRINT OPERATION SEQUENCE C ONTINUOUS , P ITCH S ENSOR E NABLED (H EAD C HECK D ISABLED ) Figure 10-7, Op eration Sequence Chart c d e Head Pitch s ens or ( ga p) c d e f Print 1 st pag e Sta ndby c d e f g c d e f g h Print 2 nd pa ge Print 3 rd page (Note) A bov e i[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN 9001111A Page 10-7 C ONTINUOUS , P ITCH S ENSOR D ISABLED (H EAD C HECK D ISABLED ) Figure 10-8, Op eration Sequence Chart c d e Head Pitch sensor (g a p) c d e f Print 1 st pag e +head che ck Standby c d e f g c d e f g h Print 2 nd page +head che ck Print 3 rd page +head che ck (Note)[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN: 9001111A Page 10-8 C ONTINUOUS , P ITCH S ENSOR D ISABLED (H EAD C HECK E NABLED ) Figure 10-9, Op eration Sequence Chart After print operation Before pr int operation c d e f c d efg Paper is transported actual pr int size portion in vertical dir ection. However , if the <EP> co[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN 9001111A Page 10-9 T EAR -O FF , P ITCH S ENSOR E NABLED (H EAD C HECK D ISABLED ) Figure 10-10, Operation Sequence Chart c d e Manual cut Pitch senso r (g a p) c d e Backfee d up to base re fe re nce print p ositio n Standby c d e f c d e f g Print 1 st page Print 2 nd p a g e Head f c[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN: 9001111A Page 10-10 T EAR -O FF , P ITCH S ENSOR E NABLED (H EAD C HECK E NABLED ) Figure 10-1 1, Operation Sequence Chart Manual cut Pitc h se nso r (g a p) c d e Back fee d up to base re fer ence print positio n Standby c d e f c d e f g Print 1 st page Print 2 nd p a g e Head c d e [...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN 9001111A Page 10 -11 C UTTER , N O B ACKFEED Figure 10-12, Operation Sequence Chart c Cut Pitch sen sor (gap) c d e Print 1 st page Stand by d e f Cut ter opera tio n Print 2 nd p a g e Head * 1: Be cause back fee d oper ation is not per for med, an unprintabl e are a occur s at the fr [...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN: 9001111A Page 10-12 C UTTER , O PERATION 1 Figure 10-13, Operatio n Sequence Chart Cut Pitch se nso r (g a p) c d e Print 1 st page Standby Cu tt er op erat io n Ba ck feed Head d e f c d e f c d e f (Note) Abo ve is the base r ef er ence positio n whe n the gap se nsor is use d.[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN 9001111A Page 10 -13 C UTTER , N O B ACKFEED , E XTERNAL P ULSE I NPUT Figure 10-14, Operation Sequence Chart Cut Pitch se nsor (g ap) c d e Pr int 1 st page Standby d e f Cu tt er op era ti on Head N ote 1 : Bec au se b ac kfeed oper at io n is not per for med, an unprintable are a oc [...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN: 9001111A Page 10-14 C UTTER , O PERATION 1, E XTERNAL P ULSE I NPUT Figure 10-15, Operatio n Sequence Chart Cut Pitch se nso r (g a p) c d e Print 1 st page Standby Cutter oper ation Ba ck feed Head d e f c d e f c d e f Print sig nal input (Note) Above is th e b ase r eferen ce p osit[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN 9001111A Page 10 -15 P EEL -O FF , P EEL -O FF S ENSOR , N O B ACKFEED Figure 10-16, Operation Sequence Chart Peel-off Pitch sens or (g a p) Print 1 st page Standby Head d e f c d e f c g Not e 1: Pe el -of f seno r che ck N ote 2: Unpr intable are a Peel-off senso r N ote 1: T he pe el[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN: 9001111A Page 10-16 P EEL -O FF , P EEL -O FF S ENSOR , O PERATION 1 Figure 10-17, Operatio n Sequence Chart Peel-off Pitch sensor (gap) Prin t 1 st page Stan dby Head d e f c d e f c g Note 1 : Peel-off sen sor ch eck Peel-off sens or Note 1: The peel -off sensor checks the peel-off s[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN 9001111A Page 10 -17 P EEL -O FF , E XTERNA L P ULSE I NPUT , N O B ACKFEED Figure 10-18, Operation Sequence Chart Peel-off Pitch se nsor (g a p) Print 1 st pag e Standby Head d e f c d e f c g Print s ignal input N ote 1: U nprintabl e are a N ote 1 : Bec au se b ac kf eed op era ti on[...]

Section 10: Diagrams & Schematics M84Pro Service Manual PN: 9001111A Page 10-18 P EEL -O FF , E XTERNAL P ULSE I NPUT , O PERATION 1 Figure 10-19, Operatio n Sequence Chart Peel-off P itch se nso r (g a p) Print 1 st pag e Standby Head d e f c d e f c g Print signa l input Ba ck feed c d e f g (Note) Abo ve is the base ref er ence pos ition w h[...]