Brother HL-730Plus Service Manual
  1. Manuals
  2. Brands
  3. Brother Manuals
  4. Printer
  5. HL-730PLUS
  6. Service manual
Brother HL-730Plus Service Manual

Brother HL-730Plus Service Manual

Hide thumbs Also See for HL-730Plus:
Table of Contents

Advertisement

Quick Links

See also: Operating Manual , User Manual
R
LASER PRINTER
SERVICE MANUAL
MODEL:HL-720/730/730Plus

Advertisement

Table of Contents
loading

Related Manuals for Brother HL-730Plus

Summary of Contents for Brother HL-730Plus

  • Page 1 LASER PRINTER SERVICE MANUAL MODEL:HL-720/730/730Plus...
  • Page 2 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

    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. 20 seconds at 23°C (73.4°F)

  • Page 11: Functions

    Memory 0.5 Mbytes (HL-730) or 1.0 Mbytes (HL-730Plus) only with Data Compression Technology. Expandable up to 2.0 Mbytes with an optional memory board. MB110 - 1.0 MB (for HL-730/730Plus) MB115 - 1.5 MB (for HL-730 only)

  • 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

    21 CFR Subchapter J. The label for Chinese products MANUFACTURED : Brother Corporation (Asia) Ltd.. Shenzhen Buji Nan Ling Factory Gold Garden Ind., Nan Ling Village, Buji, Rong Gang, Shenzhen, CHINA. This product complies with FDA radiation performance standards, 21 CFR Subchapter J.

  • 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

    730Plus. The memory capacity can be expanded up to 2 Mbytes for both HL-730 and HL-730Plus. HL-730 (0.5 M model): M optional RAM = 1.5 Mbytes + 1.5 M optional RAM = 2 Mbytes HL-730Plus (1 M model) M optional RAM = 2 Mbytes Fig. 2.13 II-15...

  • 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.

  • 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. !            ...

  • 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. -   2 )-3, .  '/ * .  '/*    '0* $! 1/ Fig.
  • 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. 1  6     1  4  $6  1    Fig.

  • 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.      1/     '132 1,2 1(*...

  • 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. ( 4  ( 4  '4 *...

  • 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.

  • 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.
  • Page 61                      ;              2 4        1   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: 3A. Main Pcb Circuit Diagram (1/2

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

  • Page 84: 3B. Main Pcb Circuit Diagram (2/2

    Appendix 3. b. Main PCB Circuit Diagram (2/2), HL-720 CODE UK3595000 B48K224CIR NAME V - 4...

  • Page 85: Main Pcb Circuit Diagram (1/2), Hl-730/730Plus

    Appendix 4. Main PCB Circuit Diagram (1/2), HL-730/730Plus CODE UK3596000 NAME B48K233CIR (1/2) V - 5...

  • Page 86: Main Pcb Circuit Diagram (2/2), Hl-730/730Plus

    Appendix 5. Main PCB Circuit Diagram (2/2), HL-730/730Plus CODE UK3596000 NAME B48K233CIR (2/2)

  • Page 87: Panel/Sensor Pcb Circuit Diagram

    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 NAME High-Voltage PS Circuit V - 10...

  • Page 91: Serial No. Descriptions

    PR99019 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: Service Manual

    LASER PRINTER SERVICE MANUAL MODEL:HL-760...
  • Page 93 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 94 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 95 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 96 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 97 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 98: Features

    CHAPTER I                                                    FEATURES This printer has the following features:...
  • Page 99 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 100: Specifications

    IDT79R3041-20J 20Mhz Emulation Automatic emulation selection among HP LaserJet 5P (PCL Level 5e), EPSON FX-850, and IBM Proprinter XL Printer driver Windows 95/Windows 3.1 driver, supporting Brother Native Compression mode and bi-directional capability. ® Optional Macintosh QuickDraw driver (Standard in some countries.)

  • Page 101: Printing

    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 102: 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 103: 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 104: 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 105: 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 106 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 107 (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 108: 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 109: Dram

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

  • Page 110: 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 111: 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 112: 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 113 1.3.10 Engine I/O Fig. 2.12 shows the engine interface circuit. Fig. 2.12 II-12...
  • Page 114 1.3.11 Paper Feed Motor Drive Circuit Fig. 2.13 II-13...

  • Page 115: 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 116 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 117: 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 118: 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 119: 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 120 (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 121: 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 122: 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 123: 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 124: 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 125: 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 126: 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 127: 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 128: 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 129: 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 130 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 131: 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 132: 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 133: Main Pcb Circuit Diagram (1/3

    Appendix 2. Main PCB Circuit Diagram (1/3) CODE UK3227000 B48K272CIR(1/3) NAME...

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

    Appendix 3. Main PCB Circuit Diagram (2/3) CODE UK3227000 NAME B48K272CIR(2/3)

  • Page 135: Main Pcb Circuit Diagram (3/3

    Appendix 4. Main PCB Circuit Diagram (3/3) CODE UK3227000 B48K272CIR(3/3) NAME...

  • Page 136: 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 137: 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 138 Please read this manual thoroughly before using the printer. Brother Laser Printer HL-700 Series User’s Guide Keep this manual in a convenient place for quick and easy reference at all times.

  • Page 139: Shipment Of The Printer

    Shipment of the Printer If for any reason you must ship your Printer, carefully package the Printer to avoid any damage during transit. It is recommended that you save and use the original packaging. The Printer should also be adequately insured with the carrier. Warning When shipping the Printer, the DRUM UNIT assembly including the TONER CARTRIDGE must be removed from the Printer and placed in...
  • Page 140 Brother products. This is available 24 hours a day, 7 days a week. You can use the system to send the information to any fax machine, not just the one you are calling from.

  • Page 141: Compilation And Publication Notice

    USER’S GUIDE 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 TrueType is a trademark of Apple Computer, Inc. Epson is a registered trademark and FX-80 and FX-850 are trademarks of Seiko Epson Corporation.

  • Page 142: To Use The Printer Safely

    Definitions of Warnings, Cautions, and Notes The following conventions are used in this User’s Guide: Warning Indicates warnings that must be observed to prevent possible personal injury. Caution Indicates cautions that must be observed to use the printer properly or prevent damage to the printer.
  • Page 143 USER’S GUIDE TABLE OF CONTENTS REGULATIONS........................vi CHAPTER 1 INTRODUCTION..................1–1 ABOUT THE GUIDEBOOKS...................1–1 Finding Out How to Use the Printer................1–1 ABOUT YOUR PRINTER....................1–2 Printer Overview ......................1–2 System Requirements .....................1–3 Features ..........................1–3 OPERATING AND STORAGE ENVIRONMENT ............1–6 Power Supply .........................1–6 Environment ........................1–6 CHAPTER 2 PAPER HANDLING.................2–1 PAPER SPECIFICATIONS....................2–1 MULTI-PURPOSE SHEET FEEDER................2–4...
  • Page 144 TABLE OF CONTENTS CHAPTER 5 MAINTENANCE ..................5–1 REPLACING THE TONER CARTRIDGE ...............5–1 REPLACING THE DRUM UNIT..................5–6 ADJUSTING THE PRINT DENSITY................5–10 CLEANING THE PRINTER ...................5–11 Cleaning the Printer Exterior..................5–11 Cleaning the Printer Interior and Drum Unit..............5–12 RE-PACKING THE PRINTER ..................5–15 CHAPTER 6 TROUBLESHOOTING................6–1 ALARM INDICATIONS AT A GLANCE .................6–1 Operator Calls ........................6–1 Service Calls........................6–4...

  • Page 145: Regulations

    A shielded interface cable should be used in order to ensure compliance with the limits for a Class B digital device. Changes or modifications not expressly approved by Brother Industries, Ltd. could void the user’s authority to operate the equipment.
  • Page 146 FDA regulations and must be attached to laser products marketed in the United States. MANUFACTURED: Brother Corporation (Asia) Ltd. Brother Buji Nan Ling Factory Gold Garden Ind., Nan Ling Village, Buji, Rong Gang, Shenzhen, CHINA This product complies with FDA radiation performance standards, 21 CFR Subchapter J MANUFACTURED: BROTHER INDUSTRIES (USA) INC.
  • Page 147 USER’S GUIDE Declaration of Conformity (For Europe) We, Brother International Europe Ltd., Brother House 1 Tame Street, Guide Bridge, Audenshaw, Manchester M34 5JE, UK. declare that this product is in conformity with the following normative documents. Safety: EN 60950, EN 60825...
  • Page 148 REGULATIONS For Finland and Sweden LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT Varoitus! Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle. Varning – Om apparaten används på annat sätt än i denna Bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.
  • Page 149 USER’S GUIDE IMPORTANT - Wiring Information (For U.K. only) If the power cord supplied with this printer is not suitable for your electrical outlet, remove the plug from the mains cord and fit an appropriate three pin plug. If the replacement plug is intended to take a fuse then fit the same fuse as the original.

  • Page 150: Chapter 1 Introduction

    CHAPTER 1 INTRODUCTION CHAPTER 1 INTRODUCTION ABOUT THE GUIDEBOOKS Finding Out How to Use the Printer You have two guidebooks for this printer. Read each guidebook in the following order: 1. Read the Quick Setup Guide to set up your printer and to ensure proper connection with your computer.

  • Page 151: About Your Printer

    USER’S GUIDE ABOUT YOUR PRINTER Printer Overview Paper Support Multi-Purpose Sheet Feeder Paper Guide Manual Feed Slot Top Cover Extension Support Wire Control Panel Output Tray Fig. 1-1 Front View 1 2 3 4 5 6 7 8 RS-422A/RS-232C Serial Interface Port (HL-730/730Plus series only) Power Switch Parallel Interface Port...

  • Page 152: Features

    CHAPTER 1 INTRODUCTION System Requirements in Brother Printing Solution for Windows Check the following system requirements to setup and operate the printer in Brother Printing Solution for Windows: • IBM PC or compatible with 80486 SX or higher microprocessor • Parallel interface (or printer port) •...
  • Page 153 USER’S GUIDE Remote Printer Console Program for DOS (For HL-730/730Plus series Only) The utility program, Remote Printer Console (RPC), is available on a floppy disk supplied with your printer. When you operate your computer in the DOS (Disk Operating System) environment, this program allows you to easily change the default settings of the printer such as fonts, page setup, emulations and so on.
  • Page 154 CHAPTER 1 INTRODUCTION Enhanced Memory Management The printer provides its own data compression technology in the printer hardware and the supplied printer driver software, which can automatically compress graphic data and font data efficiently into the printer’s memory. You can avoid memory errors and print most full page 600 dpi graphic and text data, including larger fonts, with the printer’s standard memory.

  • Page 155: Operating And Storage Environment

    USER’S GUIDE OPERATING AND STORAGE ENVIRONMENT Please take note of the following before using the printer. Power Supply Use the printer within the specified power range. AC power: ±10% of the rated power voltage in your country Frequency: 50 Hz (220 V– 240 V) or 50/60 Hz (110–120 V) The power cord, including extensions, should not exceed 5 meters (16.5 feet).
  • Page 156 CHAPTER 1 INTRODUCTION Do not subject the printer to strong physical shocks or vibrations. Do not expose the printer to open flames or salty or corrosive gasses. Do not place objects on top of the printer. Do not place the printer near an air conditioner. Keep the printer horizontal when carrying.

  • Page 157: Chapter 2 Paper Handling

    CHAPTER 2 PAPER HANDLING CHAPTER 2 PAPER HANDLING PAPER SPECIFICATIONS The printer can handle paper that has the following specifications. Paper Type Paper Size Cut sheet A4, Letter, Legal, B5, A5, Executive, Custom size (70-216 x 127-356 mm, 2.75-8.5 x 5-14 inches) Envelopes DL, C5, COM-10, Monarch, 9”...
  • Page 158 USER’S GUIDE Remarks It is recommended that you test paper, especially special sizes and types of paper, on this printer before purchasing large quantities. Avoid feeding labels with carrier sheets exposed, or your printer will be damaged. Avoid using coated paper, such as vinyl coated paper. Avoid using preprinted or highly textured paper.
  • Page 159 CHAPTER 2 PAPER HANDLING The following types of envelopes are not recommended for use. • Damaged, curled, wrinkled, or irregularly shaped envelopes • Extremely shiny or highly textured envelopes • Envelopes with clasps • Envelopes with self-adhesive closures • Envelopes of baggy construction •...

  • Page 160: Multi-Purpose Sheet Feeder

    USER’S GUIDE MULTI-PURPOSE SHEET FEEDER The printer has a multi-purpose sheet feeder that can feed plain paper, envelopes, transparencies and organizer paper. To use the multi-purpose sheet feeder, follow these steps: 1. Make sure that you have selected the proper paper source, paper size and orientation.

  • Page 161: Loading Paper Into The Feeder

    CHAPTER 2 PAPER HANDLING Loading Paper into the Feeder To load paper into the feeder, follow these steps. 1. Open the multi-purpose sheet feeder by gently pulling the lid forward towards you. ( 2. Load paper into the multi-purpose sheet feeder with the printing surface face down.
  • Page 162 USER’S GUIDE 3. Move the paper guide to the paper width. ( Caution Failure to set the paper guide to the paper size may cause paper skew or jams. 4. Close the multi-purpose sheet feeder. ( Fig. 2-5 Moving the Paper Guide and Closing the Feeder Note If the multi-purpose sheet feeder runs out of paper when you try to print,...

  • Page 163: Two Side Printing (Manual Duplexing)

    CHAPTER 2 PAPER HANDLING Two Side Printing (Manual Duplexing) The supplied printer driver for Windows 95 or Windows 3.1 enables manual duplex printing. For more information about settings, see the help text in the printer driver. The printer prints all the even numbered pages on one side of the paper first, and then prints all the odd pages on the reverse side of the paper.

  • Page 164: Manual Feed Slot

    USER’S GUIDE MANUAL FEED SLOT The multi-purpose sheet feeder also has a manual feed slot. You can manually load paper sheet by sheet from this slot. You do not need to remove paper from the multi-purpose sheet feeder when using the manual feed slot.
  • Page 165 CHAPTER 2 PAPER HANDLING Note • Insert paper firmly into the manual feed slot. • Be sure to load sheet by sheet when using the manual feed slot. CHAPTER 2 –9...

  • Page 166: Output Tray And Paper Support Wire

    USER’S GUIDE OUTPUT TRAY AND PAPER SUPPORT WIRE The printer ejects paper with printed surfaces face down into the output tray at the front of the printer. When the output tray is closed, the ejected paper comes out sheet by sheet through the slit at the front.

  • Page 167: Chapter 3 Control Panel

    CHAPTER 3 CONTROL PANEL CHAPTER 3 CONTROL PANEL LAMPS AND SWITCH This section refers to the following lamps and switch on the printer control panel. Fig. 3-1 Lamps and Switch on Control Panel Note When the power switch is off or the printer is in sleep mode, all lamps including the Ready lamp are off.

  • Page 168: Data (Toner) Lamp

    USER’S GUIDE Data (Toner) Lamp The Data lamp indicates the current status of the print data process. Lamp Printer status The printer has no print data. The printer is receiving data from the computer or Blinking the printer is processing data in memory. Print data remains in the printer memory.

  • Page 169: Switch

    CHAPTER 3 CONTROL PANEL Switch If you press the switch during printing, the printer immediately stops printing and ejects the paper. It is recommended that you wait until the page has finished printing, then press the switch, otherwise you will lose data on the page.

  • Page 170: Test Print Mode

    USER’S GUIDE Test Print Mode The printer has the following test print mode. Follow these steps: 1. Make sure that the top cover is closed. 2. Hold down the switch and turn on the power switch. Keep the switch depressed until the Drum lamp comes on. The Drum lamp lights to indicate that the printer is in the test print mode.

  • Page 171: Chapter 4 Options

    CHAPTER 4 OPTIONS CHAPTER 4 OPTIONS SERIAL INTERFACE BOARD RS100M (For HL-730 / 730Plus series Only) To connect the printer to a DOS computer with a serial interface or to an Apple Macintosh computer, you need to install the optional serial interface board.

  • Page 172: Setting The Serial Interface Parameters

    USER’S GUIDE If necessary, select the interface type as follows: 1. Make sure that the printer is in the off-line state. 2. Select the RS-422A(Apple) or RS-232C(IBM) interface by changing the serial interface slide switch to the right for IBM(RS-232C) or to the left side for Apple(RS-422A).
  • Page 173 CHAPTER 4 OPTIONS If necessary, set the serial interface parameters as follow: 1. Make sure that the printer is in the off-line state. 2. Set the serial interface parameters by moving up (on) or down (off) the selectors of the dual in-line package (DIP) switch. 1 2 3 4 5 6 7 8 Fig.

  • Page 174: Connecting The Serial Interface Cable

    USER’S GUIDE Table 3: Parity Settings Selector 1 Selector 2 Parity Even — None Note • The factory settings are indicated in bold. • If the robust Xon setting is turned on with selector 8, the printer sends Xon signals at one second intervals to the connected computer until it receives data.
  • Page 175 CHAPTER 4 OPTIONS You can connect a parallel and a serial interface cable at the same time. The auto interface selection function allows you to share the printer with two computers. To do this, connect the parallel interface cable and then connect the serial interface cable as follows: 1.

  • Page 176: Memory Board

    (giving you a total of 2 MB). Only one memory board can be installed, so select your board carefully according to your printing needs. The HL-730Plus series printer has 1.0 MB of memory as standard. The memory capacity can be expanded up to 2 MB with an optional memory board.

  • Page 177: Chapter 5 Maintenance

    CHAPTER 5 MAINTENANCE CHAPTER 5 MAINTENANCE REPLACING THE TONER CARTRIDGE The printer can print approximately 2,200 pages with one toner cartridge. When the toner cartridge is running low, the Alarm and Data (Toner) lamps blink once every 5 seconds to indicate toner low. In USA, Canada and some other areas the printer is supplied with a starter toner cartridge which must be replaced after 1,000 pages.
  • Page 178 USER’S GUIDE Caution Keep the drum unit level after removing the toner cartridge, to avoid possible toner spill or scatter. Follow these steps to replace the toner cartridge: 1. Turn off the power switch. 2. Close the output tray and open the top cover. Remove the drum unit by holding each side of the drum and gently lifting the drum forwards towards you.
  • Page 179 CHAPTER 5 MAINTENANCE Warning After you have just used the printer, some internal parts of the printer are extremely hot. When you open the top cover of the printer, never touch the shaded parts shown in the following illustration. High Temperature Fig.
  • Page 180 If toner cartridges are left unpacked for a long period of time, the toner life is shortened. • You can only use a Brother genuine toner cartridge (TN-200 series) which is specially formulated to ensure top print quality. Using another brand of toner cartridge could void your printer’s...
  • Page 181 CHAPTER 5 MAINTENANCE 6. Install the new toner cartridge into the right hand side of the drum unit. Make sure that the toner cartridge guide bar is exactly aligned with the guide slot in the drum unit and pushed fully home into the drum unit to ensure that the toner cartridge and the drum unit fit together correctly.

  • Page 182: Replacing The Drum Unit

    For best performance, use only genuine Brother toner, and the product should only be used in a clean, dust-free environment with adequate ventilation.
  • Page 183 CHAPTER 5 MAINTENANCE Follow these steps to replace the drum unit: 1. Turn off the power switch. 2. Close the output tray and open the top cover. Remove the old drum unit. Fig. 5-10 Removing the Drum Unit Warning After you have just used the printer, some internal parts of the printer are extremely hot.
  • Page 184 USER’S GUIDE Fig. 5-12 Removing the Toner Cartridge 4. Unpack the drum unit and gently shake it five or six times horizontally. Fig. 5-13 Shaking the Drum Unit Caution • Do not remove the starter sheet. Starter Sheet Fig. 5-14 Do Not Remove the Starter Sheet •...
  • Page 185 CHAPTER 5 MAINTENANCE 5. Install the toner cartridge into the new drum unit. For more information, “REPLACING THE TONER CARTRIDGE” in this chapter. 6. Install the new drum unit into the printer. Fig. 5-15 Installing the Drum Unit 7. Close the top cover. 8.

  • Page 186: Adjusting The Print Density

    USER’S GUIDE ADJUSTING THE PRINT DENSITY The print density dial is located inside the printer. You can use it to adjust the amount of toner applied to the paper. When the toner cartridge and drum unit are replaced, or if the operating temperature and humidity are high or low, print conditions may change causing darker or lighter printouts.

  • Page 187: Cleaning The Printer

    CHAPTER 5 MAINTENANCE CLEANING THE PRINTER Clean the printer exterior and interior periodically. If printed pages get stained with toner, clean the printer interior and drum unit. Cleaning the Printer Exterior Clean the printer exterior as follows: 1. Turn off the power switch and unplug the power cord. Warning There are high voltage electrodes inside the printer.

  • Page 188: Cleaning The Printer Interior And Drum Unit

    USER’S GUIDE Cleaning the Printer Interior and Drum Unit Clean the printer interior and the drum unit as follows: 1. Turn off the power switch and unplug the power cord. Warning There are high voltage electrodes inside the printer. Before cleaning the printer, make sure to turn off the power switch and unplug the power cord from the outlet Fig.
  • Page 189 CHAPTER 5 MAINTENANCE 4. Gently wipe the scanner window with a soft dry cloth. Scanner Window Fig. 5-22 Cleaning the Scanner Window Caution • Do not touch the scanner window with your finger. • Do not wipe the scanner window with cleaning alcohol (isophorol). 5.
  • Page 190 USER’S GUIDE 6. Clean the primary corona wire inside the drum unit by gently sliding the tab to the right and left several times. Home Position ( ) Fig. 5-23 Cleaning the Primary Corona Wire 7. Return the tab to the home position ( mark position) before reinstalling drum unit.

  • Page 191: Re-Packing The Printer

    CHAPTER 5 MAINTENANCE RE-PACKING THE PRINTER Caution Whenever you transport the printer, use the packing materials which are provided with your printer. Also, follow the steps below to re-pack the printer, or the printer may be damaged which will void the printer’s warranty.
  • Page 192 USER’S GUIDE 4. Place the drum unit assembly in the plastic bag and seal the bag completely. Fig. 5-25 Placing the Drum Unit in the Plastic Bag 5. Close the top cover, the extension wire, and the output tray. 6. Wrap the printer in the plastic bag and place it in the original carton box with the original Styrofoam packing material.

  • Page 193: Chapter 6 Troubleshooting

    CHAPTER 6 TROUBLESHOOTING CHAPTER 6 TROUBLESHOOTING ALARM INDICATIONS AT A GLANCE Operator Calls If a recoverable error occurs, the printer indicates an ‘operator call’ by blinking the Alarm lamp and any of the following lamps. Find the error and take the proper action to correct it. The printer automatically recovers from most errors, but you may need to reset the printer with the panel switch as described below.
  • Page 194 USER’S GUIDE For errors shown below, the printer indicates an operator call by blinking the Alarm lamp. If you use the printer with the supplied Windows driver, the status monitor will appear to indicate the error on your computer screen. (All of HL-700 series) The HL-730/730Plus series printer also prints some error messages on paper.
  • Page 195 CHAPTER 6 TROUBLESHOOTING Note If the printer does not operate as you expect it to, it is recommended that you turn off the power switch, wait a few seconds and then turn it on again. If you still have problems, consult your dealer or our authorized service representative.

  • Page 196: Service Calls

    USER’S GUIDE Service Calls If an unrecoverable error occurs, the printer indicates the need for a service call by lighting all the lamps and then the following combination of lamps alternately: Service Call Fuser Laser BD Scanner ROM error malfunction malfunction malfunction Drum...

  • Page 197: Paper Jams

    CHAPTER 6 TROUBLESHOOTING PAPER JAMS Before you can clear a paper jam error, you need to find the location of the paper jams. Locate the position referring to the following figure. Top Cover Paper Multi-Purpose Sheet Feeder Drum Unit Fig. 6-1 Locating Paper Jam Position After locating the position, clear the jammed paper referring to the following descriptions.
  • Page 198 USER’S GUIDE Caution Do not pull jammed paper from the output tray. Be sure to open the top cover to remove the jam, or the fuser may get dirty with toner powder and may result in toner scatter on the next printed page or pages. Fig.
  • Page 199 CHAPTER 6 TROUBLESHOOTING Paper Jam near the Drum Unit or at the Paper Output Tray If a paper jam has occurred near the drum unit, open the top cover and remove the drum unit. Then, pull the jammed paper upwards and out of the printer.

  • Page 200: Q & A

    USER’S GUIDE Q & A This section contains questions and answers for using your printer. If you have encountered a problem, find the question relating to your problem and take the steps recommended to correct the problem. Setting Up the Printer Hardware Question Recommendation The printer does not work.

  • Page 201: Setting Up The Printer For Dos (For Hl-730/730Plus Series Only)

    CHAPTER 6 TROUBLESHOOTING Setting Up the Printer for DOS (For HL-730/730Plus series Only) Question Recommendation • Check if the DOS application software interface I cannot print from my application software. settings match that of your printer: for example, if you are using a parallel printer cable, you would most likely set your DOS software printer port to LPT1.

  • Page 202: Setting Up The Printer For Apple Macintosh Computers

    USER’S GUIDE Setting Up the Printer for Apple Macintosh Computers When the Optional RS-100M Serial Interface Is Installed into Your Printer (For HL-730/730Plus series Only) Question Recommendation • Make sure that the supplied Macintosh printer I cannot print from my application software.

  • Page 203: Printing

    CHAPTER 6 TROUBLESHOOTING Printing Question Recommendation • Turn on and off the printer or reset the printer. The printer prints unexpectedly • Make sure your application software is correctly set or it prints garbage. up to use this printer by checking the printer settings in your application software.

  • Page 204: Print Quality

    USER’S GUIDE Print Quality Caution You will clear a print quality problem by replacing the drum unit with a new one if the Drum lamp is on. The drum unit is at the end of its life. Question Recommendation Printouts are too dark or light. Turn the print density dial counterclockwise for lighter images and clockwise for darker images.
  • Page 205 CHAPTER 6 TROUBLESHOOTING Question Recommendation Toner scatters and stains the If toner scatters over the whole printing surface, adjust printed page. the print density dial inside the printer counter clockwise. See “ADJUSTING THE PRINT DENSITY” in Chapter 5. Clean the printer interior. See “Cleaning the Printer Interior and Drum Unit”...
  • Page 206 USER’S GUIDE Question Recommendation Printed pages are blurred at the Certain environmental conditions such as humidity, center or either edge. high temperatures, etc. may cause this situation to occur. Here come Pat-top ,he come. One thing I can tell you is you go to be free. Come together right now, over Here come Pat-top ,he come.

  • Page 207: Printer Specifications

    Print Method Electrophotography by semiconductor laser beam scanning Laser Wavelength: 780 nm Output: 5 mW max Resolution HL-720 series: 600 dots/inch (under Brother Printing Solution for Windows) HL-730 / 730Plus series: 600 dots/inch (under Brother Printing Solution for Windows) 300 dots/inch...

  • Page 208: Functions

    LaserJet IIP (PCL level 4), EPSON FX- 850, or IBM Proprinter XL Printer Driver Windows 3.1/3.11 and Windows 95 driver, supporting Brother Native Compression mode and bi-directional capability Optional Macintosh driver available for System 6.0.7 or higher (For HL-730/730Plus series Only)

  • Page 209: Electrical And Mechanical

    APPENDIX Electrical and Mechanical Power Source U.S.A. and Canada: AC 110 to 120 V, 50 / 60 Hz Europe and Australia: AC 220 to 240 V, 50 Hz Power Consumption Printing: 150 W or less Stand-by: 35 W or less Sleep: 7 W or less Noise...

  • Page 210: Parallel Interface Specifications

    USER’S GUIDE PARALLEL INTERFACE SPECIFICATIONS Note To ensure best quality performance use an IEEE 1284 compliant parallel cable between the printer and your computer. Only IEEE 1284 cables support all of the advanced printing capabilities, like bi-directional communication. These cables will be clearly marked with “IEEE-1284”. Interface Connector Printer Side: Amphenol FCN-685J036-L/X or equivalent A shielded cable should be used.
  • Page 211 APPENDIX Note To use bi-directional communication, an interface cable which has the pin connections above must be used. Shield Shield Fig. A-1 Parallel Interface Cable APPENDIX A–5...

  • Page 212: Resident Fonts (For Hl-730 / 730Plus Series Only

    USER’S GUIDE RESIDENT FONTS (For HL-730 / 730Plus series Only) The following bitmapped fonts are resident in this printer. Brougham 10 (12 point) upright/normal upright/bold italic/normal italic/bold Brougham 12 (10 point) upright/normal upright/bold italic/normal italic/bold Letter Gothic 16.66 (8.5 point)upright/normal upright/bold italic/normal italic/bold...
  • Page 213 APPENDIX SYMBOL SETS/CHARACTER SETS (For HL-730 / 730Plus series Only) * IBM mode * EPSON mode * HP mode • PC-8 • US ASCII • ISO14 JIS ASCII • PC-8 D/N • German • ISO57 Chinese • PC-850 • UK ASCII I •...
  • Page 214 INDEX INDEX Alarm lamp ....... 3–2, 6–1 interface ..........A–2 auto-emulation switching ....1–4 error ..........6–2 baud rate..........4–3 jammed paper ........6–5 bitmapped font ......... A–6 label ...........2–1 character set........A–7 control panel......1–2, 3–1 cover open......... 6–2 Macintosh ........1–4, 6–10 cut sheet ..........
  • Page 215 USER’S GUIDE power cord ........1–2 life..........A–1 power switch ........1–2 starter ..........1–5 ppm ........... 1–3 Toner lamp .........3–2, 6–1 primary corona wire ......5–14 top cover ..........1–2 print transparency........2–1 density ......... 5–10 method.......... A–1 overrun .......... 6–2 warm-up..........A–1 quality .......... A–1 Windows ..........6–8...

This manual is also suitable for:

Hl-720Hl-730

Table of Contents