Brother HL-1060 manual

SERVICE MANUAL MODEL:HL-1060 R LASER PRINTER[...]

© Copyright Brother 1997 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission i n writing from the publisher. Specifications are subject to change without notice. Trademarks: The brother logo is a registered trademark of Brother Industries, Ltd. Apple,the Apple Logo,and Macintosh are tra[...]

PREFACE This service manual contains basic information required for after-sales service of the laser printer (here- in-after referred to as "this machine" or "the printer"). This information is vital to the service technician to maintain the high printing quality and performance of the printer. This service manual covers the HL-[...]

i CONTENTS CHAPTER I FEATURES AND SPECIFICATION S ..........................................I-1 1 . FEATURE S .................................................................................................................... . ....I-1 2 . SPECIFICATION S .............................................................................................[...]

ii 2.3 Sensor s .................................................................................................................... . ............. . II-19 2.3.1 Cover Senso r ........................................................................................................... . I I -19 2.3.2 Toner Empty Senso r .............................[...]

iii CHAPTER I V MAINTENANCE AND TROUBLESHOOTIN G ......................... . IV-1 1 . INTRODUCTIO N ............................................................................................................. . IV-1 1.1 Initial Chec k ..................................................................................................................[...]

CHAPTER I -1 CHAPTER I FEA TURES AND SPECIFICA TIONS 1. FEATURES This printer has the following features: 1200dpi Resolution and 10ppm Printing Speed 600 dots per inch (dpi) with microfine toner and ten pages per minute (ppm) printing speed (A4 or Letter size paper). The printer also supports 1200 (H) x 600 (V) dots per inch (dpi) resolution for Wi[...]

CHAPTER I -2 Low Running Cost: The toner cartridge is separate from the drum unit. You need to replace only the toner cartridge after around 2,200 pages, which is cost effective and ecologically friendly. Remote Printer Console Program for DOS The utility program, Remote Printer Console (RPC), is available on the floppy disk supplied with your prin[...]

CHAPTER I -3 2. SPECIFICATIONS 2.1 Printing Print method Electrophotography by semiconductor laser beam scanning Resolution 600 x 600dpi (for Windows/DOS) 300 x 300dpi (under Apple Macintosh using optional RS-100M) 1200 x 600dpi (Horizontal x Vertical) (for Windows DIB graphics) Print speed 10 page/minute (when loading Letter-size paper from the mu[...]

CHAPTER I -4 2.3 Electrical and Mechanical Power source U.S.A. and Canada: AC 110 to 120V, 60Hz Europe and Australia: AC 220 to 240V, 50Hz/60Hz Power consumption Printing: 280W or less Standing by: 60W or less Sleep: 13W or less Noise Printing: 49dB A or less Standing by: 38dB A or less Temperature Operating: 10 to 32.5°C (59 to 90.5°F) Storage: [...]

CHAPTER I -5 2.4 Paper Specification (1) Multi-purpose sheet feeder loading < Sheet Feeder 1 (Front)> Paper size: A4, Letter, Legal, B5, A5, A6, and Executive, and other sizes of media that can be handled by the feed mechanism, can be loaded. 69.8 to 229 mm 105 to 406mm (face down) Feeding direction Feedable paper weight: 60 (16lb.) to 157 (4[...]

CHAPTER I -6 2.5 Print Delivery (1) With the output tray opened Tray capacity : Maximum 100 sheets (80g/m 2 ), face-down only (2) With the output tray closed Tray capacity : 1 sheet (80g/m 2 ), face-down only Note: Face down: Deliver the printed face of the paper downward. Environment : 23°C 2.6 Paper (1) Types of paper <Sheet Feeder 1 (Front)&[...]

CHAPTER I -7 (2) Paper feed conditions Type Name Feeder Manual feed Feeder 1 Feeder 2 60 to 80 g/m 2 (200 sheets) (200 sheets) Normal paper (cut sheet) 80 g/m 2 paper (Legal) (100 sheets) (100 sheets) 157 g/m 2 (30 sheets) (30 sheets) Labels (50 sheets) ✕ Special paper (cut sheet) Envelopes (10 sheets) ✕ Postcards (30 sheets) ✕ Organizers (10[...]

CHAPTER I -8 The table below shows the effective printing areas. Size A B C D E F A 4 210.0mm 8.27” (2,480 dots) 297.0mm 11.69” (3,507 dots) 203.2mm 8.0” (2,400 dots) 288.5mm 11.36” (3,407 dots) 3.4mm 0.13” (40 dots) 4.23mm 0.17” (50 dots) Letter 215.9mm 8.5” (2,550 dots) 279.4mm 11.0” (3,300 dots) 203.2mm 8.0” (2,400 dots) 271.0m[...]

CHAPTER I -9 3. SAFETY INFORMATION 3.1 Laser Safety (110 - 120V Model only) This printer is certified as a Class 1 laser product under the US Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. This means that the printer does not produce hazardous laser[...]

CHAPTER I -10 3.3 Caution for Laser Product (Warnhinweis für Laserdrucker) CAUTION: When the machine during servicing is operated with the cover open, the regulations of VBG 93 and the performance instructions for VBG 93 are valid. CAUTION: In case of any trouble with the laser unit, please replace the laser unit itself. To prevent direct exposure[...]

CHAPTER II -1 CHAPTER II THEOR Y OF OPERA TION 1. ELECTRONICS 1.1 General Block Diagram Fig. 2.1 shows a general block diagram of the HL-1060 printer. Optional RAM(SIMM) (Max. 32Mbytes) Optional ROM (Max. 4Mbytes) Optional I/F Board ( RS-232C) Expansion Memory I/O Expansion I/O Expansion ROM I/O Parallel Video Control Block Interface Block Engine C[...]

CHAPTER II -2 1.2 Main PCB Block Diagram Fig. 2.2 shows the block diagram of the main PCB. Reset Circuit Program + Font ROM (4Mbytes) RAM (2Mbytes) Option RAM (SIMM) (Max. 32Mbytes) Optional ROM (Max. 4Mbytes) Option Serial I/O (RS232C & RS422A) EEPROM (512 x 8bits) CPU Core R3041 A S I C Oscillator (40MHz) Address Decoder DRAM Control Timer FI[...]

CHAPTER II -3 1.3 Main PCB 1.3.1 CPU Core Fig. 2.3. shows the CPU circuit block on the main PCB. The CPU is an IDT 79R3041-20J which is driven at a clock frequency of 20MHz. This clock frequency is made by dividing the source clock frequency of 40.0MHz by two. The address and data bus are both 32bits consisting of AD0 to AD31. The total addressable[...]

CHAPTER II -4 1.3.2 ASIC The ASIC is composed of a Cell Based IC that contains the following functional blocks. (1) Oscillator circuit Generates the main clock for the CPU by dividing the source clock frequency by two. (2) Address Generator Generates the address bus by latching the AD bus with the ALE signal. (3) Address decoder Generates the CS si[...]

CHAPTER II -5 (8) Parallel I/O <Data receive Mode> There are two modes in this unit. One is the CPU receive mode and the other is the DMA receive mode. In the CPU receive mode the CPU receives the command data from the PC, and after the CPU is switched to the DMA mode, it receives the image data and writes it to the DRAM directly. 90 µsec ST[...]

CHAPTER II -6 (12) Engine control I/O This I/O is used for the connection to the driver PCB. It controls the main motor, solenoid, sensors, etc. Fig. 2.4[...]

CHAPTER II -7 1.3.3 ROM The program and the font data are stored in 4Mbytes of ROM. The ROM is composed of two 16Mbit masked ROMs which are mounted in 42-pin IC sockets. Fig. 2.5 1.3.4 Optional ROM The program and the font data are stored in 4Mbytes of ROM. The ROM is composed of two 16Mbit masked ROMs which are mounted in 42-pin IC sockets. Fig. 2[...]

CHAPTER II -8 1.3.5 DRAM Four 4Mbit DRAM (x 8bit) are used as the printer memory. Fig. 2.7[...]

CHAPTER II -9 1.3.6 Optional RAM A 32bit SIMM (72 pin) can be fitted as optional RAM. The main PCB has one slot and its capacity is for SIMM from 1Mbytes to 32Mbytes. Fig. 2.8[...]

CHAPTER II -10 1.3.7 Optional Serial I/O The interrupt of the serial I/O is input to the EXINT terminal of the ASIC, and recognized by the CPU. A 32-byte space for a register is provided for this I/O, which is read and written to by the CPU. Fig. 2.9 1.3.8 EEPROM The EEPROM is an X24C04F two-wire type with a 512 x 8bits configuration. Fig. 2.10[...]

CHAPTER II -11 1.3.9 Reset Circuit The reset IC is a PST591DMT. The reset voltage is 4.2V (typ.) and the LOW period of the reset signal is 50ms (typ.). Fig. 2.11 1.3.10 Parallel I/O Fig. 2.12 shows the parallel interface circuit. Fig. 2.12[...]

CHAPTER II -12 1.3.11 Engine I/O Fig. 2.13 shows the engine interface circuit. Fig. 2.13[...]

CHAPTER II -13 1.3.12 Paper Feed Motor Drive Circuit A DC motor is used for paper feeding. Fig. 2.14 1.4 Driver PCB The following parts are mounted on the driver PCB. • Connectors ..................Low-voltage, high-voltage, solenoid, main motor, toner sensor, laser, polygon motor, connector for main PCB • Registration sensor 1.5 SW Panel PCB T[...]

CHAPTER II -14 1.6 Power Supply 1.6.1 Low-voltage Power Supply The power supply uses a switching regulation system to generate the regulated DC power (+5V and +24V), which are converted from the AC line. Heater Circuit Thermal Fuse Fuse Lightning Surge Absorber Feedback Line Filter Fuse Rectifier Oscillator 24V Regulation Circuit 5V Regulation Circ[...]

CHAPTER II -15 1.6.2 High-voltage Power Supply, SR PCB This generates and outputs the voltages and currents for the charging, development and transfer functions. Transfer Roller Supply Roller Photosensitive Drum Developing Roller Cleaner Roller Corona Unit Current Regulator Current Regulator Voltage Regulator Voltage Regulator Voltage Regulator Vol[...]

CHAPTER II -16 2. MECHANICS 2.1 Overview of Printing Mechanism Fig. 2.17 EL PCB Main Motor Fan Motor Toner Empty Sensor PCB High- Voltage Power Supply Primary Charger (Corona Wire) Primary Charger (Grid) Developer Roller Transfer Roller Toner Empty Sensor SW Panel PCB Scanner Unit Solenoid Resist Main Cotrol PCB Driver PCB SR PCB Relay PCB Solenoid[...]

CHAPTER II -17 2.2 Paper Transfer 2.2.1 Paper Supply The pick-up roller picks up one sheet of paper from the paper feeder every time it is rotated and feeds it to the paper feed roller. Fig. 2.19 The paper is gripped between the pick-up roller and the separation pad and separated into individual sheets. The pick-up roller is directly connected to t[...]

CHAPTER II -18 2.2.3 Paper Eject The completion of paper eject is detected in the following manner: (a) When the leading edge of the paper pushes down the eject sensor actuator located in the fixing unit, the photo sensor (photo interrupter) is opened and detects the start of paper eject. (b) When the trailing edge of the paper h a s p a s s e d th[...]

CHAPTER II -19 2.3 Sensors 2.3.1 Cover Sensor Detects opening and closing of the top cover. Fig. 2.23 2.3.2 Toner Empty Sensor Detects if there is toner in the toner cartridge. It also detects whether or not the drum unit is installed. (The toner cartridge is installed in the drum unit). Fig. 2.24 Toner Empty Sensor Cover Switch Top Cover[...]

CHAPTER II -20 2.4 Drum Unit 2.4.1 Photosensitive Drum Generates the latent electrostatic image and develops the image on the drum surface. 2.4.2 Primary Charger Forms a uniform charge on the drum surface. (1) Corona wire Generates the ion charge on the drum. (2) Grid Spreads the ion charge evenly over the drum surface. 2.4.3 Developer Roller Devel[...]

CHAPTER II -21 2.5.2 Exposure Stage After the drum is positively charged, it is exposed to the light emitted from the laser unit. Fig. 2.26 The area exposed to the laser beam is the image to be printed. The surface potential of the exposed area is reduced forming the electrostatic image to be printed. 1 Cycle of drum Surface Potential (V) +1000 +70[...]

CHAPTER II -22 2.5.3 Developing Developing causes the toner to be attracted to the electrostatic image on the drum so as to transform it into a visible image. The developer consists of a non-magnetic toner. The development roller is made of conductive rubber and the supply roller which is also made of conductive sponge rotate against each other. Th[...]

CHAPTER II -23 2.5.5 Drum Cleaning Stage In the image transfer stage, not all the toner on the photosensitive drum is transferred onto the paper but some remains on the drum. In the drum cleaning stage, the drum surface is cleaned by the cleaning roller, so that residual toner on the drum surface is removed and collected on the cleaning roller itse[...]

III-1 CHAPTER III DISASSEMBLY AND REASSEMBLY 1. SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling, be careful to follow the following precautions during maintenance work. (1) Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. (2) Be careful not to lose[...]

III-2 2. DISASSEMBLY FLOW DRUM UNIT MP SHEET FEEDER ASSY TOP COVER FIXING UNIT SR PCB / RELAY PCB SCANNER UNIT PAPER SUPPORT EXTENSION SUPPORT WIRE MAIN PCB ASSY BASE PLATE ASSY DRIVER PCB LOW-VOLTAGE PS PCB ASSY B B C C A A 1 3 5 7 10 11 20 UNDER SHOOT ASSY 6 OUTPUT TRAY ASSY 2 4 DRIVE UNIT MAIN MOTOR ASSY 15 GEARS and SOLENOID 16 17 18 8 9 13 FAN[...]

III-3 3. DISASSEMBLY PROCEDURE 3.1 Drum Unit (1) Open the top cover. (2) Lift out the drum unit. Fig. 3.1 3.2 Output Tray ASSY (1) Press the hinges at the left and right ends of the output tray inwards to release the output tray from the main cover. Fig. 3.2 Drum unit Top cover Main cover Main cover Output tray Output tray[...]

III-4 3.3 Top Cover (1) Open the top cover. (2) Press the hinges at the left and right ends of the top cover inwards to release the top cover from the main cover. Note: If it is impossible to release the top cover in the above way, press the side of the top cover (  ) while pulling the side of the main cover (  ). Fig. 3.3 3.4 MP Sheet Feeder[...]

III-5 (2) Raise the pick-up roller cover (  ) and remove it (  ). (3) Remove the MP feeder cover (  ). Fig. 3.5 (4) Remove the tray side covers R and L by releasing the three hooks inside each of the covers as the following order. Fig. 3.6 MP feeder cover    Pick-up roller cover Top side cover L Tra y side cover R    <[...]

III-6 (5) After removing the sector gear, paper feed bearing, and bearing 6, take off the paper pick-up roller unit. Fig. 3.7 (6) Raise the pressure plate toward you and press both sides of the pad inward to release it by pressing the separation pad holder. Then take off the spring. Note: If it is impossible to release the pressure plate in the abo[...]

III-7 3.5 MP Sheet Feeder 2 ASSY (1) Remove the four screws. (2) Disassemble any other parts of MP sheet feeder 2 in the same way as described for MP sheet feeder 1. Fig. 3.9 3.6 Under Shoot ASSY (1) Disconnect the two cable harnesses from the relay PCB. Fig. 3.10 Screws MP sheet feeder 2 Screw Main cover Cable harness Rela y PCB ASSY Under shoot A[...]

III-8 (2) Remove the two screws. (3) Lift the rear portion of the under shoot assy to remove it. Fig. 3.11 Note: Follow the number above in order when assembling. Fig. 3.11.1     Main cover   Under shoot ASSY     Plate spring Feed shaft roller[...]

III-9 3.7 SR PCB / Relay PCB (1) Remove the SR protect sheet. (2) Disconnect the connector of the SR harness ASSY connecting the SR PCB and the driver PCB and remove the high-voltage cover. Fig. 3.12 (3) Disconnect the connector of the relay harness ASSY connecting the SR PCB and the relay PCB and remove the two screws on the SR PCB, and remove the[...]

III-10 3.8 Fixing Unit (1) Remove the two screws. (2) Lifting the fixing unit, disconnect the two heater harnesses and the thermistor connector on the EL PCB. Fig. 3.14 (3) Unhook the harness of the thermistor ASSY from the hook of the fixing unit. (4) Remove the screw. (5) Remove the thermistor ASSY. (6) Remove the cleaner ASSY. Fig. 3.15 Fixing u[...]

III-11 Note: Follow instructions below when installing the thermistor in the fixing unit. • Place the cleaner felt of the cleaner ASSY under the heat roller. • Place the end of the thermistor on the heat roller. • Insert the boss1 of the thermistor into the hole of the fixing unit frame. • Do not place the thermistor on the boss2 of the fix[...]

III-12 (9) Release the cleaner lock from the cleaner ASSY HR. (10) Remove the cleaner ASSY HR from the fixing unit. Fig. 3.18 (11) Release the right side of the paper eject roller shaft. (12) Remove the four eject pinch rollers and the pinch springs from the fixing unit frame. Then, remove the pinch spring from each pinch roller. Fig. 3.18a E j ect[...]

III-13 Note: Follow instructions below when installing the cleaner ASSY HR. • Put the cleaner ASSY HR on the heat roller. • Rotate the hook of the cleaner ASSY HR as shown in the figure to fit it into the fixing unit frame. • Insert the cleaner lock into the fixing unit frame. Fig. 3.19 (13) Remove the bind B tight 3 x 10 screw securing the c[...]

III-14 3.9 Scanner Unit (1) Remove the three screws. (2) Lift out the scanner unit. Fig. 3.21 (3) Disconnect the three connectors from the driver PCB. (4) Remove the screw and the tape, and lift the toner sensor PCB from the scanner unit. Note: Never touch the inside of the scanner unit or the mirror when disassembling or reassembling. If there is [...]

III-15 (5) Turn the scanner unit upside down and remove the screw to release the toner sensor harness. Fig. 3.22-1 3.10 Main PCB ASSY (1) Remove the four screws. (2) Hold the hooks at left and right to pull out the main PCB ASSY. Fig. 3.23 Screw Screw Scanner unit Hook Toner sensor harness Screws Hook Main PCB ASSY[...]

III-16 3.11 Base Plate ASSY Note: Prior to turning the printer upside-down, ensure that the drum unit has been removed from the printer. (1) Turn the printer upside down. (2) Remove the five M4 and four M3 self tapping screws and one screw. Fig. 3.24 (3) Lift the base plate ASSY and remove the grounding screw. Fig. 3.25 Base plate ASSY Ground wire [...]

III-17 Note: See the Fig. 3.26 about the position installing the dumping material and the soundproof sponge A,B. Fig. 3.26 3.12 Driver PCB ASSY (1) Remove the screw securing the driver PCB ASSY. (Slide the PCB A from underneath the main shield.) Fig. 3.27 Screw Driver PCB ASSY Main shield Driver PCB ASSY <The inside of the base plate> Insulat[...]

III-18 97-P-56 (2) Disconnect the eleven connectors from the PCB. (Three connectors have already been disconnected when removing the scanner unit.) (Name of the harnesses) 1. SW panel harness 2. Scan motor harness 3. Toner harness 4. Laser harness 5. Fan motor harness 7. Main connector 8. High-voltage flat cable 9. Erase lamp harness 10. SR harness[...]

III-19 3.14 High-voltage Power Supply PCB ASSY (1) Remove the screw securing the high-voltage power supply PCB ASSY. (2) Disconnect the HV flat cable from the PCB. Fig. 3.30 Note: When reassembling, the flat side of the density dial shaft must be aligned with the flat side of the density dial plastic adjustment cover. 3.15 Fan Motor ASSY (1) Remove[...]

III-20 (3) Remove the two screws securing the fan motor. Fig. 3.32 3.16 Drive Unit (1) Unhook the heater harness from the drive unit. Fig. 3.33 SW panel PCB Fan motor holder Fan motor Screws Heater harness Drive unit Hook[...]

III-21 (2) Release the hook to remove the gear cover. (3) Remove the six screws securing the drive unit. Lift the drive unit while pressing and releasing the static removal plate spring on the drive unit. Fig. 3.34 3.17 Main Motor ASSY (1) Remove the four screws securing the main motor ASSY. Fig. 3.35 Gear cover Hook Screws Drive unit Gear cover St[...]

III-22 3.18 Gears and Solenoid (1) Apply grease to the points shown below. J J A N N N F D F N K A E G G EE E G E K A B A B D C A H M L N H C A A A H A H A A E B H F M, L F Fig. 3.36[...]

III-23 Note: Follow instructions below when applying the grease. Sign When applying the grease Grease Application amount A Before installing the gear. Dow Corning LTD. EM-30L 1 rice-grain size B After installing the bending washer, and before installing the gear. Dow Corning LTD. EM-30L 1 rice-grain size C Before installing the gear. Dow Corning LT[...]

III-24 3.19 Paper Support (1) Pull the paper support down toward you and pull both legs outwards to release it. Fig. 3.37 3.20 Extension Support Wire (1) Raise the extension support wire toward you, press both legs inward to release it, and then release the paper stopper from the wire. Fig. 3.38 Paper support MP sheet feeder 1 , 2 Output tra y Pape[...]

III-25 4. PACKING Fig. 3.39 Documents Carton, SF assy Dust cover Pad Pad PE sheet Ba g Pad Pad Carton[...]

CHAPTER IV -1 CHAPTER IV MAINTENANCE AND TROUBLESHOOTING 1. INTRODUCTION 1.1 Initial Check (1) Operating environment Check if : • The source voltage stays within ±10% from the rated voltage shown on the rating plate. • The printer is installed on a solid, level surface. • The room temperature is maintained between 10°C and 32.5°C. The rela[...]

CHAPTER IV -2 If condensation has occurred, wipe the effected units or parts with a dry cloth. If the drum unit is unpacked soon after it is moved from a cold room to a warm room, condensation may occur inside the unit, which may cause incorrect images. Instruct the user to allow the unit to come to room temperature before unpacking it. This will t[...]

CHAPTER IV -3 2.3 Periodical Replacement Parts No. Description Part No. Qty s e r v i ce l i f e ( number of print) Remar ks 1 Fixing Unit Y (Cleaner ASSY HR) UH3308001 (UH3310001) 1 1 (100,000) 120V Fixing Unit Y (Cleaner ASSY HR) UH3309001 (UH3310001) 1 1 (100,000) 230V 2 Scanner Unit Y 1 (100,000) 3 MP sheet feeder 1 ASSY Y (P pick-up roller sha[...]

CHAPTER IV -4 3. IMAGE DEFECTS 3.1 Image Defect Examples I-2 Dark I-1 Light I-2 Dark I-3 Completely blank I-4 All black I-5 Dirt on back of paper I-6 Black vertical streaks I-6 Black vertical streaks I-7 Black horizontal stripes I-9 White vertical streaks I-8 Black vertical streaks I-10 Faulty registration I-11 Poor fixing I-12 Image distortion I-1[...]

CHAPTER IV -5 3.2 Troubleshooting Image Defects The following procedures should be followed in the event of specific image defects. See subsection 3.3 for information about the location of the high-voltage contacts and grounding contacts. I-1 Light Possible cause Step Check Result Remedy HV.GND contacts (Fig.4-5) Density dial 1 Is the density dial [...]

CHAPTER IV -6 I-2 Dark Possible cause Step Check Result Remedy HV.GND contacts (Fig.4-5) Density dial 1 Is the density dial at the center click position? No Set it to the center click position or reasonable position. Corona failure (soiled wire) 2 Is the corona wire dirty? Yes C l ean the corona wire by using the wire cleaner. Corona failure (conta[...]

CHAPTER IV -7 I-3 Completely blank Possible cause Step Check Result Remedy HV.GND contacts (Fig.4-5) Developing bias contact failure 1 Are the developing bias contacts between the printer body and drum unit dirty? Yes Clean the electrodes at both sides. Drum unit 2 Are the drum shaft and drum electrode of the printer body Yes Clean the shaft and th[...]

CHAPTER IV -8 I-4 All black Possible cause Step Check Result Remedy HV.GND contacts (Fig.4-5) Corona failure 1 Is the corona wire of the drum unit broken? Yes Replace the drum unit. 2 Are the electric terminal springs in the printer body and the electrode on the bottom face of the drum unit dirty? Yes Clean the terminals in the printer and on the d[...]

CHAPTER IV -9 I-5 Dirt on the back of paper Possible cause Step Check Result Remedy Fixing unit 1 Is the pressure roller dirty? Is any other area in the printer dirty? Yes Clean the pressure roller. (See the following note.) Dirt in the drum unit 2 Is the transfer roller dirty? is the problem solved after the drum unit replaced? Yes Replace the dru[...]

CHAPTER IV -10 I-6 Black vertical streaks Black and blurred vertical streaks Possible cause Step Check Result Remedy HV.GND contacts (Fig.4-5) Corona failure 1 Is the corona wire dirty? Yes Clean the corona wire with the wire cleaner. Corona failure 2 Is the vertical block streak about 10mm wide? Is the corona wire cleaner not in its home position?[...]

CHAPTER IV -11 I-8 Black vertical streaks (in the gray background) Possible cause Step Check Result Remedy Translucent stain on the scanner window 1 Are there any stains? Yes Clean the scanner window. If it is not effective, replace the scanner unit. I-9 White vertical streaks Possible cause Step Check Result Remedy Scanner window dirty 1 Is the sc[...]

CHAPTER IV -12 I-11 Poor fixing Possible cause Step Check Result Remedy Printing paper 1 Is thick paper more than 36lb weight in use? Yes Instruct the user to use paper of the recommended weight and thickness. Toner sensing failure 2 Is the problem solved by replacing the drum unit or the toner cartridge? (When printing is faint.) Yes Toner is empt[...]

CHAPTER IV -13 I-13 Faint print Print out test print out test print out test Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print out test print out test Print out test print o Print out test print o [...]

CHAPTER IV -14 I-15 Black spots Possible cause Step Check Result Remedy Drum unit 1 Are the spots at 94mm intervals? The problem is not solved after printing a few pages. Yes If toner remains stuck, wipe it off gently with a cotton swab. Replace the drum unit if the OPC drum is scratched or deteriorated (exposed). (Refer to the following note.) Fix[...]

CHAPTER IV -15 (3) Wipe the surface of the photosensitive drum with a cotton swab until the dust or paper powder on the surface toner lamp comes off. Fig. 4.4 Caution: Don't wipe the surface of the photosensitive drum with something sharp. (ball- point pen etc.) Use the cleaning liquid which is mixed ethyl alcohol and pure water at the rate of[...]

CHAPTER IV -16 I-16 Black bank Possible cause Step Check Result Remedy Drum unit 1 Is the wire cleaner positioned at its home position? No Return the wire cleaner to its home position. Yes Replace the drum unit. I-17 Gray background Possible cause Step Check Result Remedy Density dial 1 Is the problem corrected by adjusting the density dial? Yes Ad[...]

CHAPTER IV -17 I-18 Hollow print Possible cause Step Check Result Remedy Print paper 1 Is thick paper of more than 42lb being used or extremely rough surface paper? Yes Recommend to use the specified type of paper. No Refer and compare with I-14. I-19 Downward fogging of solid black Possible cause Step Check Result Remedy Drum unit 1 Is the problem[...]

CHAPTER IV -18 I-20 Horizontal lines Possible cause Step Check Result Remedy HV.GND contacts (Fig.4-5) SR electrode 1 Are the SR electrodes between the printer body and the drum unit dirty? Yes Clean both electrodes. SR connection failure 2 Are the SR electrodes between the printer body and the drum unit connected correctly? No Check the SR connect[...]

CHAPTER IV -19 3.3 Location of High-voltage Contacts and Grounding Contacts Fig. 4.5 Fig. 4.6 Grounding contacts Groundin g wire Drum shaft High-voltage contacts For transfer roller Drum unit For cleaning roller For g rid Wire cleaner For corona wire For development roller For supply roller To SR PCB For supply roller Groundin g wire For drum For d[...]

CHAPTER IV -20 3.4 Location of Feed Roller Shaft and Grounding Contacts Fig. 4.7 Feed shaft roller For feed roller[...]

IV-21 4. PAPER JAM Problem Type of jam Cause Temp measure Jam at power on Paper stuck The paper feed sensor of paper eject sensor is turned on. Remove the paper inside the printer. If there is no paper exist, check suspected sensors referring to note and clear the problem. Top of paper stopped at 20mm from the fixing unit. The paper feed roller rot[...]

CHAPTER IV -22 5. TROUBLESHOOTING MALFUNCTIONS When carrying out countermeasures for malfunctions as described in this section, check connectors for contact failure before measuring the voltage at the specified connector pins. M-1 No AC power supplied Possible cause Step Check Result Remedy Supply voltage 1 Is the correct voltage present at the out[...]

CHAPTER IV -23 M-3 Main motor unrotated Possible cause Step Check Result Remedy Failure of connector 1 Is the connection of connector P12 on the driver PCB correct? No Reconnect the connector. Main motor (M1) 2 Disconnect connector P12 from the driver PCB. Measure the resistance between the connector pins of the main motor by using a circuit tester[...]

CHAPTER IV -24 M-5 Insufficient output from high-voltage power supply unit Possible cause Step Check Result Remedy High-voltage contact 1 Do any of the terminals on the high-voltage contacts have dirt or contact burns? Yes Clean the high-voltage contact. 2 Check the connection of the harness between the high- voltage power supply and the driver PCB[...]

CHAPTER IV -25 M-8 BD failure Possible cause Step Check Result Remedy Harness connection failure 1 Is connector P4 on the driver PCB secured correctly? No Connect it securely. M-9 Scanner failure Possible cause Step Check Result Remedy Harness connection failure 1 Is the connection of the scanner motor connector P2 on the driver PCB secured? No Rec[...]

CHAPTER IV -26 F-1 Double feeding Possible cause Step Check Result Remedy Paper 1 Is paper of a recommended type being used? No Instruct the user to use recommended types of paper. Separation pad 2 Is the surface of the separation pad worn out? Yes Replace the MP sheet feeder. F-2 Wrinkles Possible cause Step Check Result Remedy Paper 1 Is paper of[...]

CHAPTER IV -27 6. INSPECTION MODE 6.1 Incorporated Inspection Modes The printer incorporates various inspection modes such as the factory inspection mode and the test print mode. The inspection mode varies depending on the model of the printer. This printer supports a factory inspection mode, continuous grid pattern print mode, 3 patterns print mod[...]

CHAPTER IV -28 Drum Feeder2 Alarm Ready (Paper) Data (Toner) Paper eject sensor Registration sensor Cover sensor Toner sensor Switch Fig. 4.8 Paper eject ON (Paper is detected.) Drum lamp ON sensor OFF (No paper is detected.) Drum lamp OFF Registration ON (Paper is detected.) Alarm lamp ON sensor OFF (No paper is detected.) Alarm lamp OFF Cover ON [...]

CHAPTER IV -29 6.2 Error Codes In the event of a printer failure, error codes will be indicated as shown below. All the lamps and the specific lamps are turned ON alternately. The specific combination of lamps that are ON indicates the type of the error. Type of error Data Ready Alarm Drum Feeder Fuser Malfunction Laser BD Malfunction Scanner Malfu[...]

V-1 APPENDIX 1. SERIAL NO. DESCRIPTIONS The descriptions as below shows how to read labels on each place. < ID for production month > A: January E: May J: September B: February F: June K: October C: March G: July L: November D: April H: August M: December (1) Printer .........................on the main body D 6 9 5 0 5 4 8 8 (2) Process unit[...]

Appendix 2. Connection Diagram V - 2 AC INPUT LVPS CN2 CN1 1 HEATER THERMISTOR P4 SIMM P5 OPROM P1 CENTRO SERIAL I/F PARALLEL I/F P3 OPIO P2 ENGINE MAIN PCB BR-3000 0 SIMM P2 P1 RS-100M P7 MAIN SW2 I/L SW PC1 RESIST SENSOR LED5 LED4 LED3 LED2 LED1 SW1 P1 SW PANEL PCB FAN LASER P2 SCAN MOTOR SCANNER MOTOR P3 TONER P1 ERASE LAMP T/R TRANSFER PCB CHG [...]

Appendix 3. Main PCB Circuit Diagram, (1/4) CODE UK3400000 B48K246CIR NAME V - 3[...]

Appendix 4. Main PCB Circuit Diagram, (2/4) CODE UK3400000 B48K246CIR NAME V - 4[...]

Appendix 5. Main PCB Circuit Diagram, (3/4) CODE UK3400000 B48K246CIR NAME V - 5[...]

Appendix 6. Main PCB Circuit Diagram, (4/4) CODE UK3400000 B48K246CIR NAME V - 6[...]

Appendix 7. Driver PCB Circuit Diagram CODE UK3634000 B48K280CIR NAME V - 7[...]

Appendix 8. Switch Panel / Solenoid, Bin / Relay PCB Circuit Diagram CODE UK3635000 281/ 282/ 283 CIR NAME V - 8[...]

Appendix 9. Low-voltage Power Supply PCB Circuit Diagram (110 - 120V) Low-voltage PS Circuit (110 - 240V) NAME A B B F1 F2 Z1 Z2 C16 T1 C1 L1 L SW1 NTC1 BEA1 D12 D1 3 D14 D11 C5 C22 R23 R2 R5 R9 C8 PC2 R22 TRA1 R20 R21 CN2 R101 D110 Q101 R106 PC1 R104 R105 VR101 R103 C110 R102 Q2 Q1 R19 R1 3 R11 C9 R8 D5 C10 C12 R12 PC1 R6 R14 R10 C11 D7 R7 D4 D6 R[...]

Appendix 10. Low-voltage Power Supply PCB Circuit Diagram (220 - 240V) Low-voltage PS Circuit (220 - 240V) NAME A B B F1 F2 Z1 R1 Z2 C16 T1 C1 L1 L SW1 NTC1 BEA1 D12 D13 D14 D11 C5 C22 R23 R2 R5 R9 C8 PC2 R22 TRA1 R20 R21 CN2 R101 D110 Q101 R106 PC1 R104 R105 VR101 R103 C110 R102 Q2 Q1 R19 R13 R11 C9 R8 D5 C10 C12 R12 PC1 R6 R14 R10 C11 D7 R7 D4 D6[...]

V - 11 Appendix 11. High-voltage Power Supply PCB Circuit Diagram High-voltage PS Circuit NAME + VRF VRF VRF VRF VRF + – + – + + CLN DEV CHG 11 13 6 3 1 2 4 5 10 12 P1 8 P1 7 P1 9 P1 IP001 R104 R001 R002 C001 C104 C101 C102 R105 R106 T101 IC201 D601 D602 R606 R711 C706 T701 D705 R712 R603 R612 C601 T601 PC001 MC101 R225 R222 R102 R109 R228 R227[...]

Appendix 12. SR PCB Circuit Diagram CODE UK3653000 B48K284CIR NAME V - 12[...]