Brother HL-720 - B/W Laser Printer Service Manual
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Brother HL-720 - B/W Laser Printer Service Manual

Brother HL-720 - B/W Laser Printer Service Manual

Service manual
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LASER PRINTER
SERVICE MANUAL
MODEL:HL-720/730/730Plus

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Summary of Contents for Brother HL-720 - B/W Laser Printer

  • Page 1 LASER PRINTER SERVICE MANUAL MODEL:HL-720/730/730Plus...
  • Page 2 © Copyright Brother 1996 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in 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 trademarks,registered in the United States and other countries,and True Type is a trademark of Apple computer, Inc.

  • Page 3: Chapter I Features And Specifications

    PREFACE This service manual contains basic information required for after-sales service of the laser printer (here-after referred to as "this machine" or "the printer"). This information is vital to the service technical in maintaining the high print quality and performance of the printer. This service manual covers both HL-720 and HL-730/730Plus.

  • Page 4: Table Of Contents

    CONTENTS CHAPTER I FEATURES AND SPECIFICATIONS............I-1 1. SYSTEM REQUIREMENTS....................I-1 2. FEATURES ........................I-1 3. SPECIFICATIONS ......................I-4 Printing............................I-4 Functions ...........................I-5 Electrical and Mechanical ......................I-6 Paper Specification ........................I-7 Print Delivery..........................I-7 Paper ............................I-7 Effective Printing Area .......................I-8 4.
  • Page 5 2.4.6 Erase lamp ..........................II-28 Print Process ..........................II-28 2.5.1 Charging..........................II-28 2.5.2 Exposure stage ........................II-29 2.5.3 Developing ..........................II-30 2.5.4 Transfer ..........................II-30 2.5.5 Drum Cleaning Stage ......................II-31 2.5.6 Erasing Stage......................... II-31 CHAPTER III DISASSEMBLY AND REASSEMBLY ..........III-1 1.
  • Page 6 Low-Voltage Power Supply PCB Circuit Diagram 230V ............V-8 Low-Voltage Power Supply PCB Circuit Diagram 115V ............V-9 High-Voltage Power Supply PCB Circuit Diagram ..............V-10 Serial No. Descriptions ......................V-11...

  • Page 7: Features

                                                         ...
  • Page 8 Auto Resolution Reduction When printing in 600 dpi, mode with the standard memory, the printer may not be able to print due to insufficient memory. To prevent this memory error, the printer driver automatically reduces the resolution to 300 dpi or less and for successful printing Environment-Friendly Economy Printing Mode This feature will save your printing cost by saving toner.
  • Page 9 Versatile Paper Handling The printer has a multi-purpose sheet feeder and straight paper path mechanism. Using this mechanism, you can load A4, letter, legal, B5, A5, and executive sizes of paper, and various types of paper including envelopes, postcards, organizer paper, or a custom paper size. The multi-purpose sheet feeder also allows manual paper loading, so you can use labels and transparencies.
  • Page 10                                  Printing <HL-720> Print method Electrophotography by semiconductor laser beam scanning Resolution 600 dots/inch (under Brother Printing Solution for Windows) Print speed 6 page/minute (when loading A4 or letter-size paper from the multi- purpose sheet feeder) Warm-up Max.
  • Page 11 Functions <HL-720> Z80 12.5 MHZ Emulation Windows 3.1 GDI Printer driver Windows 3.1/3.11 and Windows 95 driver, supporting Brother Native Compression mode and bi-directional capability Interface Bi-directional Centronics parallel interface. Memory 0.5Mbytes Expandable up to 2.0 Mbytes with an optional memory board. MB-215W - 1.5 MB Control panel 1 switch and 4 lamps...

  • Page 12: Electrical And Mechanical

    Electrical and Mechanical <HL-720> Power source U.S.A. and Canada: AC 110 to 120V, 50/60Hz Europe and Australia: AC 220 to 240V, 50Hz Power consumption Printing: 150 W or less Standing by: 35 W or less Sleep: 7 W or less Noise Printing: 48 dB A or less...

  • Page 13: Paper Specification

    Paper Specification (1) Multi-purpose tray loading Paper size: A4, Letter, Legal, B5, A5, and Executive, and other sizes of paper that can be handled by the feed mechanism, can be loaded. 90 to 229 mm 148 to 356 mm (face down) Feeding direction Feedable paper type: 60 (16 lb.) to 157 (42 lb.) g/m...

  • Page 14: Effective Printing Area

    (b) Special paper (specified types) • Labels • Envelopes (DL,C5, COM10) • Postcards • Organizers (K, L, and J sizes of DAY-TIMERS) (2) Paper feed conditions Types Name Tray feed Manual feed Normal paper (cut sheet) 60 to 157 g/m paper Labels Special paper (cut sheet)
  • Page 15 The table below shows the effective printing areas. Size 210.0mm 297.0mm 203.2mm 288.5mm 3.4mm 4.23mm 8.27” 11.69” 8.0” 11.36” 0.13” 0.17” (2,480 dots) (3,507 dots) (2,400 dots) (3,407 dots) (40 dots) (50 dots) 215.9mm 279.4mm 203.2mm 271.0mm 6.35mm Letter 8.5” 11.0”...

  • Page 16: Laser Safety (110 - 120V Model Only

                                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.

  • Page 17: Caution For Laser Product

    Caution for Laser Product (1) CAUTION: When the machine during serving is operated with open cover, the regulations of VBG 93 and the performance instructions for VBG 93 are valid. (2) CAUTION: In case of any trouble with the laser unit, please replace the laser unit itself.

  • Page 18: Chapter Ii Theory Of Operation

    CHAPTER II THEORY OF OPERATION ELECTRONICS General Block Diagram <HL-720> Fig. 2.1 shows a general block diagram of this printer. Optional RAM board (1.5, 3.5 Mbytes) Control system Expansion memory I/O Interface block Video control block Engine control block Operation block (Operation panel) Erase lamp Drive block...
  • Page 19 <HL-730/730Plus> Fig. 2.2 shows a general block diagram of this printer. Optional RAM board Optional I/F board (1.0, 1.5 Mbytes) (Mac. RS-232C) Control system Expansion memory I/O Expansion I/O Interface block Video control block Engine control block Operation block (Operation panel) Erase lamp Paper tray unit Drive block...

  • Page 20: Main Pcb Block Diagram

    Main PCB Block Diagram <HL-720> Fig. 2.3 shows a block diagram of the main PCB. ASIC Reset Circuit CPU Core (Z80) Oscillator (12.27 MHz) Program ROM 16 Kbytes DRAM DRAM Control 0.5 Mbytes Working S-RAM 512 Bytes Option RAM 1.5 Mbytes or 3.5 Mbytes Timer To PC...
  • Page 21 <HL-730/730Plus> Fig. 2.4 shows a block diagram of the main PCB. A S I C CPU Core (MC68EC000) Reset Circuit Oscillator (15.3MHz) Address Decoder DRAM Control Program + Font ROM 512 Kbytes Timer (0.5 Mbytes) FIFO Option RAM DATA EXTENSION (1M or 1.5Mbytes) To PC CDCC Parallel I/O...

  • Page 22: Main Pcb

    Main PCB 1.3.1 CPU Core <HL-720> Fig. 2.5 shows the ASIC circuit block on the main PCB. The CPU core is a Z80 which is driven with a clock frequency of 12.27 MHz. This frequency is made by dividing the source clock of 24.54 MHz into two in the oscillator circuit.
  • Page 23 <HL-730/730Plus> Fig. 2.6. shows the CPU circuit block on the main PCB. The CPU is a Motorola MC68EC000FN16 which is driven with a clock frequency of 15.3 MHz. This clock frequency is made by dividing the source clock of 30.67 MHz into two.

  • Page 24: Asic

    1.3.2 ASIC <HL-720> The ASIC is composed of Cell Based IC and has the following function blocks. (1) Oscillator circuit Oscillator circuit drives the outside ceramic resonator, and generates the main clock for the CPU core by dividing the source clock frequency into two. It is also equipped with the several clocks for timer unit, engine control I/O unit, CDCC parallel I/O unit, data extension unit and FIFO.
  • Page 25 (7) CDCC parallel I/O <Data receiving> There are two modes in this unit. One is the CPU receiving mode and the other is the DMA receiving mode. In the CPU receiving 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 to the DRAM directly.
  • Page 26 (11) Engine control I/O This I/O is used for the connection to the panel sensor PCB. It controls the main motor, solenoid, sensors, scanner, etc. II-9...
  • Page 27 <HL-730/730Plus> The ASIC is composed of Cell Based IC and has the following function blocks. (1) Oscillator circuit Generates the main clock for the CPU by dividing the source clock frequency into two. (2) Address decoder Generates the CS for each device. (3) DRAM control Generates the RAS, CAS, WE, OE and MA signals for the DRAM and controls refresh recessing (CAS before RAS self-refreshing method).
  • Page 28 (7) CDCC parallel I/O <Data receiving> There are two modes in this unit. One is the CPU receiving mode and the other is the DMA receiving mode. In the CPU receiving 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 to the DRAM directly.
  • Page 29 (11)Engine control I/O This I/O is used for the connection to the panel sensor PCB. It controls the main motor, solenoid, sensors, etc. Fig. 2.8 II-12...

  • Page 30: Rom

    1.3.3 <HL-730/730Plus ONLY> A program of 512 Kbytes and the font data are stored in the ROM. A 42-pin IC socket is provided: an 8 Mbits ROM (42-pin) can be mounted to this socket normally, but a 4 Mbits ROM (40-pin) must be mounted to leave the 1st and 42nd pins of the socket opened.
  • Page 31 <HL-730/730Plus> A 4M-bit DRAM (x 16bits) is used as the RAM. Only one DRAM is installed in the 0.5 Mbyte model. Fig. 2.11 II-14...

  • Page 32: Optional Ram

    1.3.5 Optional RAM <HL-720> Three 4M-bit DRAM (x 8 bits) and one 16M-bit DRAM (x 8 bits) are used as the optional RAM. The total memory area is expanded up to 4 Mbytes. Fig. 2.12 <HL-730/730Plus> There are two types of optional RAMs: the 1 Mbyte model and the 1.5 Mbytes model for HL-730, and one type of optional RAM: the 1Mbyte model for HL- 730Plus.

  • Page 33: Optional Serial I/O

    1.3.6 Optional Serial I/O <HL-730/730Plus ONLY> The interrupt of serial I/O are input to the EXINT terminal of the ASIC, and are recognized by the CPU. A 32-byte space for register is provided for this I/O, which are read and written to by the CPU. Fig.

  • Page 34: Reset Circuit

    1.3.8 Reset Circuit <HL-720> The reset IC is PST591DMT. The reset voltage is 4.2V (typ.) and the LOW period of reset is 50 ms (typ.). Fig. 2.17 <HL-730/730Plus> The reset IC is PST593DMT. The reset voltage is 4.2V (typ.) and the LOW period of reset is 200 ms (typ).

  • Page 35: Cdcc I/O

    1.3.9 CDCC I/O <HL-720> Fig. 2.19 shows the CDCC interface circuit. Fig. 2.19 <HL-730/730Plus> Fig. 2.20 shows the CDCC interface circuit. Fig. 2.20 II-18...

  • Page 36: Engine I/O

    1.3.10 Engine I/O <HL-720> Fig. 2.21 shows the engine interface circuit. Fig. 2.21 II-19...
  • Page 37 <HL-730/730Plus> Fig. 2.22 shows the engine interface circuit. Fig. 2.22 II-20...

  • Page 38: Paper Feed Motor Drive Circuit

    1.3.11 Paper Feed Motor Drive Circuit <HL-720> The motor driver consists of a TR array. The excitation method is 2-2 phase excitation with an bipolar drive. Fig. 2.23 <HL-730/730Plus> The motor driver is a TR array, The excitation method is 2-2 phase excitation with an bipolar drive.

  • Page 39: Panel Sensor Pcb

    Panel Sensor PCB The following parts are on the panel sensor. • Operation Panel ..1Key, 4LEDs • Connector....Low-voltage, high-voltage, solenoid, main motor, toner sensor, laser, polygon motor, connector for main PCB • Registration sensor II-22...

  • Page 40: Power Supply

    Power Supply The power supply uses the switching regulation system to generate the regulated DC power (+5V and +24V), which are converted from the AC line. (Heater) Thermal Lightning Fuse Fuse Surge Heater Absorber Circuit Lamp Feedback Line Rectifier Oscillator Filter (Panel Sensor Circuit) Regulation...

  • Page 41: Mechanics

    MECHANICS Overview of printing mechanism Multi-Purpose Sheet Feeder Manual Paper Pass Paper Supply Unit Papers Paper Pick-up Roller Drum Unit Paper Feed Roller Pitch Roller Photosensitive Drum Auger Transfer Hopper Plate Blade Roller Fuser Unit Erase Pressure Roller Lamp Registration Sensor Lever Eject Sensor Actuator Toner Cartridge Eject Roller...

  • Page 42: Paper Transfer

    Paper Transfer 2.2.1 Paper Supply The pick-up roller picks up one sheet of paper from the paper tray at every one rotation and feeds it to the paper feed roller one by one. Papers Pick-up roller Registration sensor lever Hopper plate Separation pad Fig.

  • Page 43: Paper Eject

    2.2.3 Paper Eject The completion of paper eject is detected in the following manner: When the leading edge of the paper push down the eject sensor actuator located in the fixing unit, the photo sensor (photo interrupter) is opened and detects the start of paper eject motion.

  • Page 44: Sensors

    Sensors 2.3.1 Cover Sensor Detects open or close of the top cover. 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). Top Cover Cover Switch Fig.

  • Page 45: Drum Unit

    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. Corona wire Generates ion on the drum. Grid Spreads the ion evenly over the drum. 2.4.3 Developer Roller Develops the latent electrostatic image on the drum surface by the toner.

  • Page 46: Exposure Stage

    2.5.2 Exposure stage After the drum is positively charged, it is exposed to the light emitted from the laser unit. Drum Laser Beam Paper Laser beam lens Polygon mirror Laser detector Motor Laser diode Lens Fig. 2.32 The exposed area is the part to be printed. The surface potential of the exposed area is recreated forming an electrostatic image to be printed.

  • Page 47: Developing

    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 the non-magnetic toner. The developer roller made of conductive rubber and the supply roller made of conductive sponge rotate on each other.

  • Page 48: Drum Cleaning Stage

    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 of them remain 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 away and collected in the cleaning roller itself.
  • Page 49 CHAPTER III                                                        ...

  • Page 50: Drum Unit

    BOTTOM DRUM UNIT MAIN PCB ASSY BASE PLATE ASSY TOP COVER HIGH-VOLTAGE PANEL SENSOR PCB ASSY LOW-VOLTAGE PS PCB ASSY PS PCB ASSY MP PAPER TRAY ASSY FAN MOTOR FIXING UNIT DRIVE UNIT SCANNER UNIT MAIN MOTOR ASSY and MOTOR HEAT SINK GEARS and SOLENOID TRAY EXTENSION PAPER EJECT TRAY ASSY...

  • Page 51: Top Cover

                                 Drum Unit (1) Open the top cover. (2) Lift out the drum unit. Fig. 3.1 Top Cover (1) Open the top cover to the first lock position. (2) Prize up the top cover link and free it from the dowel on the top cover to release it inward.

  • Page 52: Multi-Purpose Paper Tray Assy

    (4) Open the top cover further, release the catch of the both side by sliding the top cover backward. Fig. 3.3 Multi-purpose Paper Tray Assy (1) Tilt the left outward and pull out the MP tray. It is not necessary to tilt the right rib. Fig.

  • Page 53: Fixing Unit

    PR98292 Fixing Unit (1) Remove the M4x12 screw securing the fixing unit. (2) Lifting up the fixing unit, disconnect the two heater harnesses and remove the connector of thermistor on EL PCB. Fig. 3.5 (3) Remove the two M3x10 screws. (4) Open the fixing unit cover along the open side of the fixing unit cover.
  • Page 54 (5) Release the right side of the paper eject roller shaft. (6) 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. 3.5b (7) Remove the M3x10 screw securing the electrode plate to remove the electrode plate from the fixing unit frame.

  • Page 55: Scanner Unit

    Scanner Unit (1) Remove the three screws. (2) Lift out the scanner unit. (3) Disconnect the three connectors of the scanner unit from the panel sensor PCB. (4) Remove the screw and disassemble the Toner sensor PCB from the Scanner unit. Fig.

  • Page 56: Base Plate Assy

    Base Plate Assy NOTE Prior to turning the printer upside-down, drum unit should be removed from the printer. (1) Turn the printer upside down. (2) Remove the four M4 and four M3 tapping screws. (3) Lift out the base plate assy and remove the grounding screw. Fig.

  • Page 57: Low-Voltage Power Supply Pcb Assy

    NOTE1:When reassembling, the connectors must be inserted to the PCB without floating and the PCB must not be floated by the harnesses. NOTE2:The connector should be inserted by fitting the housing color and the pin number. Low-Voltage Power Supply PCB Assy (1) Remove the screw securing the low-voltage power supply PCB assy.

  • Page 58: Fan Motor

    3.11 Fan Motor (1) Disconnect the connector from the high-voltage power supply PCB. ( It has been disconnected already. See above) (2) Take off the fan motor assy. Fig. 3.12 3.12 Drive Unit (1) Remove the four screws securing the drive unit. Fig.

  • Page 59: Main Motor Assy And Motor Heat Sink

    3.13 Main Motor Assy and Motor Heat Sink (1) Remove the two screws securing the main motor assy. (2) Remove the two screws securing the motor heat sink. Fig. 3.14 3.14 Gears and Solenoid (1) Apply grease the point as shown below. Grease: MOLYKOTE EM-30L TKC-0 MOLYKOTE EM-D110...

  • Page 60: Tray Extension

    3.15 Tray Extension (1) Put the tray extension assy down toward the front of the printer, and pull the bottom of its both side legs outward to release it. Fig. 3.16 3.16 Paper Eject Tray Assy (1) Open the paper eject tray. (2) Press the both sides of hinges of the paper eject tray inward to release it from the holes on the top cover.
  • Page 61                      Fig. 3.18 ...

  • Page 62: Chapter Iv Troubleshooting

    CHAPTER IV TROUBLESHOOTING INTRODUCTION Initial Check Operating environment Check if : The source voltage stays within ±10% from the rating 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 relative humidity is maintained between 20% and 80%.

  • Page 63: Basic Procedure

    If the process cartridge is unsealed soon after moved from a cold room to a warm room, condensation may occur inside the cartridge, which may cause incorrect image. Instruct the user to allow the cartridge to come to room temperature before unsealing it.

  • Page 64: Image Defects

    IMAGE DEFECTS Image Defect Examples I-1 Light I-2 Dark I-3 Completely blank I-4 All black I-5 Dirt back of paper I-6 Black vertical streaks I-6 Black and blurred I-7 Black and blurred vertical stripes horizontal stripes I-8 Dropout I-9 White vertical streaks I-10 Faulty I-11 Poor fixing registration...

  • Page 65: Troubleshooting Image Defects

    Troubleshooting Image Defects Procedures to be followed in the event of specific image defects. Light Possible cause Step Check Result Remedy Scanner Is the scanner window dirt? Clean the scanner window window with a soft dry cloth. Poor contrast Is the contrast adjustment dial in the Set it to the center center of the click position? click position or...
  • Page 66 Dark Possible cause Step Check Result Remedy Contrast failure Is the contrast adjustment dial at Set it to the center the center click position? click position or reasonable position. Corona failure Is the corona wire soiled? Clean the corona (soiled wire) wire.
  • Page 67 All black Possible cause Step Check Result Remedy Corona failure Is the drum unit corona wire Replace the drum broken? unit. Ditto Are the charging terminal spring at Clean the charging the printer body side and the wire at the both electrode on the bottom face of the sides.
  • Page 68 Black vertical streaks Black and blurred vertical stripes Possible cause Step Check Result Remedy Drum unit Are the vertical streaks about 1 - 5 Replace the drum failure length at 94mm intervals? unit. Soiling of the Is the paper tray of feed system on Clean the toner off.
  • Page 69 Black and blurred horizontal stripes Possible cause Step Check Result Remedy Scratch on the Are the horizontal stripes at 94mm Replace the drum drum intervals? unit. Toner stuck on Are the horizontal stripes at 17mm Print several sheets the develop intervals? and see what roller...
  • Page 70 White vertical streaks Possible cause Step Check Result Remedy Scanner soiling Is the window of the laser scanner Clean the window soiled? with a dry tissue. Transfer failure Is the transfer roller scratched? Replace the drum unit. I-10 Faulty registration Possible cause Step Check...
  • Page 71 I-11 Poor fixing Possible cause Step Check Result Remedy Printing paper Is thick paper more than 36 lb. Instruct the user to being used? use paper of the recommended thickness. Toner sensing Is the problem solved by replacing Toner is empty. failure the drum unit or the toner cartridge? As toner sensing is...
  • Page 72 I-12 Image distortion Possible cause Step Check Result Remedy Scanner Is the scanner unit secured to the Secure the unit frame normally? normally with the Is there any play? screws. Scanner LD Is laser portion of the laser scanner Replace the scanner emission failure motor defective? unit.

  • Page 73: Troubleshooting Of Malfunctions

    TROUBLESHOOTING OF MALFUNCTIONS Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. In case that you analyze malfunctions with the plug inserted into the outlet, such as checking the supply voltage, special caution should be exercised even if the power switch is OFF because it is one way off type.
  • Page 74 No DC power li d Possible cause Step Check Result Remedy AC power Is AC power supplied between Follow the same supply connectors CN1-L and CN1-N check procedure of M- when the power plug is plugged into 1 “No AC power the outlet? supplied”.
  • Page 75 No paper supplied Possible cause Step Check Result Remedy Connection Is the contact of connector P6 on Reconnect the failure of the panel sensor PCB good? connector. connector Panel sensor Set paper on the manual paper tray Replace the panel circuit and press the test print button on sensor PCB.
  • Page 76 BD failure Possible cause Step Check Result Remedy Harness Is the connection of connector P2 Connect it securely. connection on the panel sensor PCB correct? failure Scanner failure Possible cause Step Check Result Remedy Harness Is the connection of the scanner Connect the connection motor connector and connector P3...
  • Page 77 Double feeding Possible cause Step Check Result Remedy Paper Is the paper of a recommended Instruct the user to type used? use the recommended types of paper. Separation pad Is the surface of the separation pad Replace the MP paper worn? tray.

  • Page 78: Inspection Mode

    INSPECTION MODE Incorporated Inspection Modes The printer incorporates the inspection modes such as the factory inspection mode and the test print mode. The inspection mode varies with the model of the printer. HL-720: Factory inspection mode and Continuous test print mode HL-730/730Plus: Factory inspection mode, Continuous grid pattern print mode, 3 patterns print mode and NV-RAM value dump mode.
  • Page 79 DRUM Paper eject sensor ALARM Registration sensor READY Cover sensor (PAPER) Toner sensor DATA (TONER) Switch Paper eject ON (Paper is detected.) DRUM LED ON sensor OFF (No paper is detected.) DRUM LED OFF Registration ON (Paper is detected.) ALARM LED ON sensor OFF (No paper is detected.) ALARM LED OFF...

  • Page 80: Error Codes

    Error codes In the event of a printer failure, error codes will be indicated as shown below. All the LEDs and the specific LEDs go ON by turns repeatedly. The specific combination of ONs indicates the type of the error. Type of error DATA READY...

  • Page 81: Connection Diagram

    Appendix 1. Connection Diagram, HL-720 AC INPUT MB -215/235 CDCC I/F EXRAM LVPS CN101 MAIN PCB MAIN MOTOR POWER SWITCH ENGINE I/F PANEL SENSOR PCB REGIST TONER SCANNER MOTOR LASER SOLENOID GRID DRUM GROUND PCB HVPS LEDs EJECT COVER SW ERASE LAMP THERMISTOR HEATER...

  • Page 82: Connection Diagram, Hl-730/730Plus

    Appendix 2. Connection Diagram, HL-730/730Plus AC INPUT SERIAL I/F RS-100M MB -110/115 CDCC I/F EXRAM LVPS CN101 MAIN PCB MAIN MOTOR POWER SWITCH ENGINE I/F PANEL SENSOR PCB REGIST TONER SCANNER MOTOR LASER SOLENOID GRID DRUM GROUND PCB HVPS LEDs EJECT COVER SW ERASE LAMP...

  • Page 83: A. Main Pcb Circuit Diagram (1/2), Hl-720

    Appendix 3. a. Main PCB Circuit Diagram (1/2), HL-720 CODE UK3595000 B48K224CIR NAME V - 3...

  • Page 84: B. Main Pcb Circuit Diagram (2/2), Hl-720

    Appendix 3. b. Main PCB Circuit Diagram (2/2), HL-720 CODE UK3595000 B48K224CIR NAME V - 4...
  • Page 85 Appendix 4. Main PCB Circuit Diagram (1/2), HL-730/730Plus CODE UK3596000 NAME B48K233CIR (1/2) V - 5...
  • Page 86 Appendix 5. Main PCB Circuit Diagram (2/2), HL-730/730Plus CODE UK3596000 NAME B48K233CIR (2/2)
  • Page 87 TI No.96-P062 Appendix 6. Panel/Sensor PCB Circuit Diagram, HL-720/730/730Plus CODE UK3057000 NAME B48K225CIR V - 7...
  • Page 88 Appendix 7. Low-Voltage Power Supply PCB Circuit Diagram (110 -120V), HL-720/ 730/730Plus NTC1 BEA1 D104 C101 C102 R101 D110 R102 R103 C103 R115 R113 VR101 R104 R105 R114 R110 Low-Voltage NAME PS Circuit (110-120V) V - 8...
  • Page 89 Appendix 8. Low-Voltage Power Supply PCB Circuit Diagram (220 -240V), HL-720/ 730/730Plus NTC1 BEA1 D104 C101 C102 R101 D110 R102 R103 C103 R115 R113 VR101 R104 R105 R114 R110 Low-Voltage NAME PS Circuit (220-240V) V - 9...

  • Page 90: High-Voltage Power Supply Pcb Circuit Diagram

    Appendix 9. High-Voltage Power Supply PCB Circuit Diagram, HL-720/ 730/730Plus D101 D102 VR34 VR33 VR31 R101 R102 R103 R104 VR101 R105 R106 R107 C101 C102 VR32 Q201 VR53 NAME High-Voltage PS Circuit V - 10...

  • Page 91: Serial No. Descriptions

    PR99125 APPENDIX 10. SERIAL NO. DESCRIPTIONS The descriptions as below shows how to read labels on each place. < ID for production month > January September February June October March July November April August December Printer ......on the main body D 6 9 5 0 5 4 8 8 MONTH SERIAL NO.
  • Page 92 Scanner unit ....on the scanner unit 1 1 0 0 1 SERIAL NO. ID NO. 1:HL-700 SERIES 9:HL-1060 FACTORY ID NO.

  • Page 93: Service Manual

    LASER PRINTER SERVICE MANUAL MODEL:HL-760...
  • Page 94 © Copyright Brother 1996 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in 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 trademarks,registered in the United States and other countries,and True Type is a trademark of Apple computer, Inc.
  • Page 95 PREFACE This service manual contains basic information required for after-sales service of the laser printer (here-after referred to as "this machine" or "the printer"). This information is vital to the service technical in maintaining the high print quality and performance of the printer. This service manual covers the HL-760 printer.
  • Page 96 CONTENTS CHAPTER I FEATURES AND SPECIFICATIONS............I-1 1. FEATURES ........................I-1 2. SPECIFICATIONS ......................I-3 Printing............................I-3 Functions ...........................I-3 Electrical and Mechanical ......................I-4 Paper Specification ................... Refer to HL-730 (P.I-7) Print Delivery..................... Refer to HL-730 (P.I-7) Paper ......................
  • Page 97 2.4.5 Cleaner Roller................Refer to HL-730 (P.II-28) 2.4.6 Erase lamp ................Refer to HL-730 (P.II-28) Print Process ..................Refer to HL-730 (P.II-28) 2.5.1 Charging ................... Refer to HL-730 (P.II-28) 2.5.2 Exposure stage................. Refer to HL-730 (P.II-29) 2.5.3 Developing................Refer to HL-730 (P.II-30) 2.5.4 Transfer ..................

  • Page 98: 3A. Main Pcb Circuit Diagram (1/2

    APPENDICES ........................V-1 Connection Diagram ........................ V-1 Main PCB Circuit Diagram (1/3)....................V-2 Main PCB Circuit Diagram (2/3)....................V-3 Main PCB Circuit Diagram (3/3)....................V-4 Panel/Sensor PCB Circuit Diagram ............Refer to HL-730 (P.V-7) Low-Voltage Power Supply PCB Circuit Diagram 230V ............V-5 Low-Voltage Power Supply PCB Circuit Diagram 115V ............

  • Page 99: Features

    CHAPTER I                                                    FEATURES This printer has the following features:...
  • Page 100 Sleep Mode (Power Save Mode) Sleep mode automatically reduces power consumption when the printer is not in use. The printer consumes less than 9W when in sleep mode. Low Running Cost The toner cartridge is separate from the drum unit. You need to replace only the toner cartridge after around 2,000 pages, which is cost effective and ecologically friendly.

  • Page 101: Specifications

    SPECIFICATIONS Printing Print method Electrophotography by semiconductor laser beam scanning Resolution 1200 (H) x 600 (V) dots/inch (for Windows DIB graphics) 600 x 600 dots/inch (for Windows and DOS) 300 x 300 dots/inch (using Apple Macintosh with the optional RS- 100M) Print speed Up to 6 pages/minute (when loading A4 or letter-size paper from...

  • Page 102: Electrical And Mechanical

    Electrical and Mechanical Power source U.S.A. and Canada: AC 110 to 120 V, 50/60Hz Europe and Australia: AC 220 to 240 V, 50Hz Power consumption Printing: 150 W or less Standing by: 35 W or less Sleep: 9 W or less Noise Printing: 48 dB A or less...

  • Page 103: Chapter Ii Theory Of Operation

    CHAPTER II THEORY OF OPERATION ELECTRONICS General Block Diagram Fig. 2.1 shows a general block diagram of this printer. Optional RAM (SIMM) Optional I/F board (max. 32Mbytes) (Mac. RS-232C) Control system Expansion memory I/O Expansion I/O Interface block Video control block Engine control block Operation block (Operation panel)

  • Page 104: Main Pcb Block Diagram

    Main PCB Block Diagram Fig. 2.2 shows a block diagram of the main PCB. A S I C CPU Core (R3041) Oscillator (4MHz) Reset Circuit Address Decoder DRAM Control Program + Font ROM 4 Mbytes Timer (1.0 Mbytes) FIFO Option RAM (SIMM) DATA EXTENSION (max.32 Mbytes) To PC...

  • Page 105: Main Pcb

    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 20 MHz. This clock frequency is made by dividing the source clock of 40.0 MHz into two. The address and data bus are both 32 bit of AD0 to AD31 and D0 to D31.

  • Page 106: Asic

    1.3.2 ASIC The ASIC is composed of a Cell Based IC and has the following function blocks. Oscillator circuit Generates the main clock for the CPU by dividing the source clock frequency by two. Address Generator This controls the address buss by latching the AD buss signals with the ALE signal.
  • Page 107 CDCC parallel I/O <Data receiving> There are two modes in this unit. One is the CPU receiving mode and the other is the DMA receiving mode. In the CPU receiving 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 to the DRAM directly.
  • Page 108 (12) Engine control I/O This I/O is used for the connection to the panel sensor PCB. It controls the main motor, solenoid, sensors, etc. Fig. 2.4 II-6...

  • Page 109: Rom

    1.3.3 A program and font data are stored in the 4MBytes ROM. ROM is composed by the two 16 Mbits masks and is mounted to the 42 pin IC socket. And 16 Mbits Flash ROM Module can be mounted to it, too. Fig.

  • Page 110: Dram

    1.3.4 DRAM Two 4M-bit DRAMs (x 16bits) are used as the RAM. Fig. 2.6 II-8...

  • Page 111: Optional Ram

    1.3.5 Optional RAM As the option RAM, 32 bit SIMM of 72 pin can be mounted. SIMM has one slot and can deal with 1 MBytes to 32 MBytes. Fig. 2.7 II-9...

  • Page 112: Optional Serial I/O

    1.3.6 Optional Serial I/O The interrupt of serial I/O are input to the EXINT terminal of the ASIC, and are recognized by the CPU. A 32-byte space for register is provided for this I/O, which are read and written to by the CPU. Fig.

  • Page 113: Reset Circuit

    1.3.8 Reset Circuit The reset IC is PST591DMT. The reset voltage is 4.2V (typ.) and the LOW period of reset is 50 ms (typ). Fig. 2.10 1.3.9 CDCC I/O Fig. 2.11 shows the CDCC interface circuit. Fig. 2.11 II-11...
  • Page 114 1.3.10 Engine I/O Fig. 2.12 shows the engine interface circuit. Fig. 2.12 II-12...
  • Page 115 1.3.11 Paper Feed Motor Drive Circuit Fig. 2.13 II-13...

  • Page 116: Chapter Iii Disassembly And Reassembly

    CHAPTER III DISASSEMBLY AND REASSEMBLY SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling, be careful to follow the precautions below during maintenance work. Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. Be careful not to lose screws, washers, or other parts removed during servicing.
  • Page 117 BOTTOM DRUM UNIT MAIN PCB ASSY BASE PLATE ASSY TOP COVER HIGH-VOLTAGE PANEL SENSOR PCB ASSY LOW-VOLTAGE PS PCB ASSY PS PCB ASSY MP PAPER TRAY ASSY FAN MOTOR FIXING UNIT DRIVE UNIT SCANNER UNIT MAIN MOTOR ASSY and MOTOR HEAT SINK GEARS and SOLENOID TRAY EXTENSION PAPER EJECT TRAY ASSY...

  • Page 118: Disassembling Procedure

    DISASSEMBLING PROCEDURE Drum Unit Open the top cover. Lift out the drum unit. Top cover Drum unit Fig. 3.1 Top Cover Open the top cover to the first lock position. Prize up the top cover link and free it from the dowel on the top cover to release it inwards.

  • Page 119: Multi-Purpose Paper Tray Assy

    Open the top cover further, release the catches on both sides by sliding the top cover backward. Top cover Bottom cover Catches Sub cover Fig. 3.3 Multi-purpose Paper Tray Assembly Pull the left rib outwards from the MP tray and pull out the MP tray. It is not necessary to release the right rib.

  • Page 120: Fixing Unit

    PR98292 Fixing Unit Remove the M4x12 screw securing the fixing unit. Lifting up the fixing unit, disconnect the two heater harnesses and disconnect the thermistor cable from the connector on the EL PCB. Fixing unit Taptite, M4x12 Heater harness (Brown) Heater harness (Blue) Thermistor harness (White) EL PCB...
  • Page 121 (5) Release the right side of the paper eject roller shaft. (6) Remove the four eject pinch rollers and the pinch springs from the fixing unit frame. Then, remove the pinch spring from each pinch roller. Paper eject roller shaft Pinch Spring Eject Pinch Roller Fig.

  • Page 122: Scanner Unit

    Scanner Unit Remove the three screws. Lift the scanner unit to obtain access to the panel sensor PCB. Disconnect the three scanner unit connectors from the panel sensor PCB. Remove the screw and disassemble the Toner sensor PCB from the Scanner unit. Mirror Toner sensor PCB Connectors (P2, P3, P9)

  • Page 123: Base Plate Assy

    Base Plate Assy NOTE: Prior to turning the printer upside-down, the drum unit should be removed from the printer. Turn the printer upside down. Remove the six M4 and eight M3 tapping screws. Lift out the base plate assy and remove the grounding screw. M3 Screws (S tight) M4 Screws M3 Screws (S tight)

  • Page 124: Low-Voltage Power Supply Pcb Assy

    NOTE1: When reassembling, the connectors must be inserted fully into the PCB and the PCB must not be lifted up by the harnesses. NOTE2: The connectors should be inserted by matching the housing color and the number of pins. Low-Voltage Power Supply PCB Assy Remove the screw securing the low-voltage power supply PCB assy and lift the PCB.

  • Page 125: Fan Motor

    3.11 Fan Motor Disconnect the connector from the high-voltage power supply PCB. ( It should have been disconnected already, see above) Lift out the fan motor assy. Fan motor assy Fig. 3.12 3.12 Drive Unit Remove the four screws securing the drive unit. Drive unit Fig.

  • Page 126: Main Motor Assy And Motor Heat Sink

    3.13 Main Motor Assy and Motor Heat Sink Remove the two screws securing the main motor assy. (2) Remove the two screws securing the motor heat sink. Motor heat sink Main motor assy Fig. 3.14 3.14 Gears and Solenoid Apply grease the points shown below. Grease: MOLYKOTE EM-30L TKC-0 MOLYKOTE EM-D110...

  • Page 127: Tray Extension

    3.15 Tray Extension Put the tray extension assembly down towards the front of the printer, and pull the bottom of both side legs outwards to release it. Tray extension Multi-purpose Manual paper tray paper tray assy Fig. 3.16 3.16 Paper Eject Tray Assy Open the paper eject tray.

  • Page 128: Core

    3.17 Core Remove the flat cable from the ferrite core secured to the LD harness on the back of the scanner unit, and then carefully cut the tywrap to remove the ferrite core secured to the LD harness. LD harness Ferrite core Tywrap Cut line...

  • Page 129: Packing

    PACKING NO RTN form Insertion DC Dust cover Documents Carton, SF assy Drum/Toner box assy Sheet Carton Fig. 3.20 III-14...

  • Page 130: Chapter Iv Troubleshooting

    CHAPTER IV TROUBLESHOOTING INSPECTION MODE Inbuilt Inspection Modes The printer incorporates the following inspection modes such as the factory inspection mode and the test print mode. Factory inspection mode, Continuous grid pattern print mode, 3 patterns print mode, NV- RAM value dump mode, ROM code update (FLASH rom only), RAM check and 4% density test print..
  • Page 131 DRUM Paper eject sensor ALARM Registration sensor READY Cover sensor (PAPER) DATA Toner sensor (TONER) Switch Paper eject ON (Paper is detected.) DRUM LED ON sensor OFF (No paper is detected.) DRUM LED OFF Registration ON (Paper is detected.) ALARM LED ON sensor OFF (No paper is detected.) ALARM LED OFF...

  • Page 132: Error Codes

    Error codes In the event of a printer failure, error codes will be indicated as shown below. All the LEDs and the specific LEDs are turned ON alternately. The specific combination of ON LEDs indicates the type of error. Type of error DATA READY ALARM...

  • Page 133: Connection Diagram

    Appendix 1. Connection Diagram SERIAL I/F RS-100M AC INPUT SLOT1 SIMM LVPS CN101 MAIN PCB MAIN MOTOR POWER SWITCH ENGINE I/F PANEL SENSOR PCB REGIST TONER SCANNER MOTOR LASER SOLENOID GRID DRUM GROUND PCB HVPS LEDs EJECT COVER SW ERASE LAMP THERMISTOR HEATER NAME...

  • Page 134: Main Pcb Circuit Diagram (2/3

    Appendix 2. Main PCB Circuit Diagram (1/3) CODE UK3227000 B48K272CIR(1/3) NAME...
  • Page 135 Appendix 3. Main PCB Circuit Diagram (2/3) CODE UK3227000 NAME B48K272CIR(2/3)
  • Page 136 Appendix 4. Main PCB Circuit Diagram (3/3) CODE UK3227000 B48K272CIR(3/3) NAME...

  • Page 137: Low-Voltage Power Supply Pcb Circuit Diagram 230V

    Appendix 6. Low-Voltage Power Supply PCB Circuit Diagram 230V NTC1 BEA1 C203 R203 C101 R201 C202 D104 R206 R204 R101 D110 R102 D201 R207 R103 C301 R310 R311 VR101 R104 C310 R105 R313 R312 VR301 R110 Low-Voltage NAME PS Circuit 230V V - 5...

  • Page 138: Low-Voltage Power Supply Pcb Circuit Diagram 115V

    Appendix 7. Low-Voltage Power Supply PCB Circuit Diagram 115V NTC1 BEA1 C203 R203 C101 R201 C202 D104 R206 R204 R101 D110 R102 D201 R207 R103 C301 R310 R311 VR101 R104 C310 R105 VR301 R313 R312 R110 Low-Voltage NAME PS Circuit 115V V - 6...

  • Page 139: Parts Reference List

    LASER PRINTER PARTS REFERENCE LIST MODEL:HL-720/730/730Plus...
  • Page 140 NOTE FOR USING THIS PARTS REFERENCE LIST 1.In the case of ordering parts, it needs mentioning the following items: (1) Code (2) Q'ty (3) Description (4) Symbol ( PCB No., Revision , and Parts location mounted on the PCB.) Note : No orders without Parts Code or Tool No. can be accepted. <...
  • Page 141 CONTENTS PCB SILK-SCREEN PRINTING DRAWING ......1 GENERAL DRAWING ......... 2 POWER CORDS &...

  • Page 142: Pcb Silk-Screen Printing Drawing

    PCB SILK-SCREEN PRINTING DRAWING Fig.1 MAIN PCB (HL-720) Fig.2 MAIN PCB (HL-730) EXRAM EXRAM XL24C01 BA10393F CENTRO CENTRO RA10 HM514800 RA10 M5M44260AJ XL24C01 PST593 M5M44256J RA11 M5M44260AJ M5M44256J HC595 27C1001D CBDS B48K233-4 BA10393F ENGINE HC32 ENGINE 27C8000 27C4000 Component Side Fig.3 PANEL/SENSOR PCB (HL-720/HL-730) HIGH VOLTAGE...

  • Page 143: General Drawing

    GENERAL DRAWING 5-29 5-30 4-1-10 6-1-1 5-11 See Fig.1 or 2 5-12 5-29 5-23 5-33 4-10 5-39 5-10 2-1-2 5-40 5-34 5-15 5-34-34 5-14 5-37 5-38 5-36 12-16 5-21 Power cord 5-13 5-26 5-16 5-35 12-6 1-10 5-22 See Fig.3 5-27 12-6-6 5-31...

  • Page 144: Power Cords & Packing Drawing

    POWER CORDS & PACKING DRAWING 11-7 11-4 11-5 11-3 11-3 11-6 11-1 , 2 MODEL HL-720/730 84U-501/601 -230/930 TI No.96-P012 / 96-P014 / 96-P019 / 96-P051 / 97-P026 / 97-P044 / PR97146 / PR98031...

  • Page 145: Frame / Drive

    1. FRAME / DRIVE REF.NO. SYMBOL CODE Q'TY DESCRIPTION REMARK 1-11 UL6997001 1 DRIVE UNIT (SP) 087411615 2 TAPTITE, CUP B M4X16 UL6573000 1 PAPER PICK-UP SOLENOID LEVER UL6574000 1 CLUTCH RELEASE LEVER UL6575001 1 SOLENOID LEVER RETURN SPRING UL6576001 1 PAPER PICK-UP SOLENOID ASSY 087322015 1 TAPTITE, CUP S M3X20...

  • Page 146: Paper Tray

    3. PAPER TRAY REF.NO. CODE Q'TY DESCRIPTION REMARK UL6876001 1 MP TRAY ASSY (SP), GRAY1227 MODEL HL-720/730 84U-501/601-040 4. FIXING UNIT REF.NO. CODE Q'TY DESCRIPTION REMARK 1-10 UL6877001 1 FIXING UNIT, 120V (SP) 1-10 UL6878001 1 FIXING UNIT, 240V (SP) 1-10 UU7442001 1 FIXING UNIT, 240V PFA (SP)

  • Page 147: Cabinet

    5. CABINET REF.NO. SYMBOL CODE Q'TY DESCRIPTION REMARK 087310815 6 TAPTITE, CUP B M3X8 UL6714001 1 SW KEY, GRAY1227 UL6715001 1 PANEL LIGT GUIDE UL6716001 1 DUCT LID UL6936001 PAPER EJECT ACTUATOR ASSY, BLACK UL6935001 REGIST SENSOR ACTUATOR ASSY, BLACK UL6719000 1 INTERLOCK LEVER UL6720001...

  • Page 148: Main Pcb

    6. MAIN PCB REF.NO. SYMBOL CODE Q'TY DESCRIPTION REMARK B48K224-410 UK3593001 1 MAIN PCB ASSY W (SP), HL-720 B48K224-420 UK3730001 1 MAIN PCB ASSY W (SP), LEGEND HL-720 B48K233-410A UK3594001 1 MAIN PCB ASSY P (SP), HL-730/730DX B48K233-411A UK3597001 1 MAIN PCB ASSY P (SP), HEB HL-730 B48K233-420 UK3703001 1 MAIN PCB ASSY 1M (SP), HL-730+/730DX+...

  • Page 149: Low-Voltage Power Supply Unit

    8. LOW-VOLTAGE POWER SUPPLY UNIT REF.NO. SYMBOL CODE Q'TY DESCRIPTION REMARK REV.A UK3190001 1 PS PCB ASSY, 115V (SP) REV.A UK3191001 1 PS PCB ASSY, 230V (SP) UK3061001 1 LV HARNESS ASSY UK3062001 1 HEATER HARNESS ASSY J02101051 1 BINDER 2.3X79 MODEL HL-720/730 84U-501/601-200/201 TI NO.96-P072 9.

  • Page 150: 10. Power Cords

    10. POWER CORDS REF.NO. CODE Q'TY DESCRIPTION REMARK UK3135001 1 AC CORD ASSY, USA UK3138001 1 AC CORD ASSY, UK UK3141001 1 AC CORD ASSY, EUR UK3144001 1 AC CORD ASSY, SAA UK3147001 1 AC CORD ASSY, SEV UK3971001 1 AC CORD ASSY, DEMKO UK3151001 1 AC CORD ASSY, HEB UK3152001...

  • Page 151: 11. Packing

    11. PACKING REF.NO. CODE Q'TY DESCRIPTION REMARK UE2093001 1 CARTON, EUR HL-720 UE2085001 1 CARTON, EUR HL-730 UE2216001 1 CARTON, LEGEND HL-720 UE2171001 1 CARTON, LEGEND HL-730 (LJ6P) UE2121001 1 CARTON ASSY, USA/CAN HL-720 (WITH 2, LABEL) UE2122001 1 CARTON ASSY, USA/CAN HL-730 (WITH 2, LABEL) UE2123001 1 CARTON ASSY, USA/CAN HL-730DX (WITH 2, LABEL) UE2151001...

  • Page 152: Documents

    12. DOCUMENTS REF.NO. CODE Q'TY DESCRIPTION REMARK UK3181001 1 PR DRIVER DISK ASSY 1, WINDOWS HL-720 UK3726001 1 PR DRIVER DISK ASSY 1, WINDOWS LEGEND HL-720 UK3155001 1 PR DRIVER DISK ASSY 1, WINDOWS HL-730/730DX UK3243001 1 PR DRIVER DISK ASSY 1, WINDOWS LEGEND HL-730 UK3566001 1 PR DRIVER DISK ASSY 1, WINDOWS ISR HL-730 UK3571001...
  • Page 153 REF.NO. CODE Q'TY DESCRIPTION REMARK UL6996001 1 INSERTION DC UL7916001 1 HL-730+ INSERTION SHEET CHN MODEL HL-720/730 84U-501/601-920 TI NO. 96-P014/96-P019/96-P020/96-P030/96-P037/96-P038/96-P040/96-P45/96-P052/96-P058/96-P065 /96-P076/97-P006/97-P007/97-P016/97-P017/97-P018/97-P050/97-P061/97-P069/97-P070/97-P076 /97-P077/97-P080/PR97036/PR98035...

  • Page 154: 13 . Adjusting Tool Kit

    13 . ADJUSTING TOOL KIT 43-I TOOL NO. TOOL NAME ZX-1 PLIERS (150MM) ZX-13 SCREWDRIVER, PHILLIPS (NO-1) ZX-14 SCREWDRIVER, PHILLIPS (NO-2) ZX-31 TWEEZERS (150MM) LUBRICATING GREASE (FLOIL GE-676) ZX-43I LUBRICATING GREASE(MOLYKOTE EM-30L TKC-0)1KG ZX-43N ZX-43O LUBRICATING GREASE(MOLYKOTE EM-D110) 1KG ZX-46 TESTER (MD-200C) MODEL HL-720/730...

This manual is also suitable for:

Hl-730Hl-730plusHl-720

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