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Brother 2150N, 2170W, HL-2140 6.HARNESS ROUTING

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6.HARNESS ROUTING

1 FUSER UNIT

Eject sensor PCB ASSY

PS PCB unit

Fuser unit

2FG HARNESS

Laser unit

<Back side>

FG harness

<Left side>

Main PCB ASSY

3-7	Confidential

Contents

Page Page PREFACE APPENDIX 1: SERIAL NUMBERING SYSTEM APPENDIX 2: SCREW CATALOGUE APPENDIX 3: DELETION OF PERSONAL INFORMATION APPENDIX 4: REFERENCES APPENDIX 5: GLOSSARY TABLE OF CONTENTS Page CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT SERVICE SUPPORT SOFTWARE CIRCUIT DIAGRAMS, WIRING DIAGRAM APPENDIX REGULATION ■Internal laser radiation ■EU Directive 2002/96/EC and EN50419 <For USA and Canada ■Federal Communications Commission (FCC) Declaration of Conformity (For USA) ■Industry Canada Compliance Statement (For Canada) ■Laser Safety (110 to 120 volt model only) ■FDA Regulations (110 to 120 volt model only) SAFETY INFORMATION ■Definitions of Warnings, Cautions, Notes and Memos ■Safety Precautions WARNING Page CHAPTER 1 TROUBLESHOOTING 1.INTRODUCTION 1.2Initial Check ■Operating Environment ■Power Supply ■Paper ■Consumable Parts CAUTION: 2.DISTINGUISH ERROR CAUSE Page 2.1.2 LED indication at Service Calls 2.2Message indication 2.2.1 Error indication at Service Calls 2.3Error Cause and Remedy 1)Toner low 2)Drum life end soon 3)Toner cartridge is at the end of life 4)Cartridge position error 5)No paper fed tray 6)No paper fed manual feed slot 7)Drum error Page 8)Front cover is open 9)Fuser cover is open 10) Paper jam Page 11)Memory full 12)Print overrun 13)Main PCB failure 14) Fuser unit failure 15)Laser unit failure Main motor failure High-voltagepower supply PCB failure 18) Fan failure 3.PAPER FEEDING PROBLEMS 3.3Paper Jam ■Paper jam in the paper tray and front cover ■Paper jam in the back cover and paper eject section 3.4Dirt on Paper 3.5Wrinkles or creases 3.6Waves in the paper / folds in the paper at the eject roller 3.7Curl in the paper 4.IMAGE DEFECT TROUBLESHOOTING 4.3Troubleshooting Image Defect ■Light ■Faulty registration ■Dark ■Poor fixing ■Completely blank ■Image distortion ■All black ■Dirt on the back of paper ■Vertical streaks ■Black vertical streaks in a light background ■Black horizontal stripes ■White vertical streaks ■White horizontal streaks ■Faint print ■White spots Page ■Black spots ■Black band ■Downward fogging of solid color ■ Horizontal lines ■Ghost ■Fogging 5.SOFTWARE SETTING PROBLEMS 6.NETWORK PROBLEMS 7.OTHERS PROBLEMS CHAPTER 2 PERIODICAL MAINTENANCE 1.CONSUMABLE PARTS 2.PERIODICAL PEPLACEMENT PARTS CHAPTER 3 DISASSEMBLY AND ASSEMBLY 1.SAFETY PRECAUTIONS 2.PACKING SCREW TORQUE LIST Page 4.LUBRICATION 5.OVERVIEW OF GEARS 6.HARNESS ROUTING Page Page Page 7.DISASSEMBLY FLOW 8.DISASSEMBLY PROCEDURE 8.2FRONT COVER ASSY / SW KEY 8.2.1FRONT COVER ASSY Page 8.2.2SW KEY Page 8.3BACK COVER / OUTER CHUTE ASSY 8.3.1BACK COVER 8.3.2OUTER CHUTE ASSY 8.4FUSER COVER ASSY 8.4.1FUSER COVER ASSY 8.4.2EJECT ACTUATOR / EJECT ACTUATOR SPRING 8.4.3EJECT ROLLER ASSY 1 / BUSH C / BUSH R / BUSH L 8.5INNER CHUTE ASSY 8.6FUSER UNIT Page 8.7SIDE COVER R ASSY 8.8CORNER COVER 8.9SIDE COVER L ASSY 8.10ROLLER HOLDER ASSY Page 8.11WIRELESS LAN PCB ASSY (only HL-2170W) 8.12MAIN SHIELD COVER PLATE 8.13MAIN PCB ASSY 8.14 TOP COVER ASSY 8.14.1TOP COVER ASSY 8.14.2PAPER STACK LEVER 8.14.3SUPPORT FLAP 1 / SUPPORT FLAP 8.14.4EJECT ROLLER ASSY 2 / BUSH R / BUSH L 8.15SW SUPPORTER 8.16PANEL PCB ASSY 8.17HIGH-VOLTAGEPS PCB ASSY 8.18NEW TONER SENSOR HARNESS ASSY 8.19FILTER ASSY 8.20LASER UNIT Page 8.21FAN MOTOR 60 UNIT / COVER SENSOR HARNESS ASSY / TONER LED PCB ASSY 8.21.1FAN MOTOR 60 UNIT 8.21.2COVER SENSOR HARNESS ASSY 8.21.3TONER LED PCB ASSY Page 8.22 LVPS 8.22.1PS PCB UNIT Page 8.22.2LV SHIELD PLATE 8.23REGISTRATION FRONT SENSOR PCB ASSY Page Page Page Page 8.24REGISTRATION REAR SENSOR PCB ASSY Page Page Page 8.25DRIVE SUB ASSY Page 8.26DEV JOINT / DEV GEAR JOINT/53R / REGISTRATION PENDULUM GEAR SPRING 8.27TONER SENSOR PCB UNIT ASSY 8.28 REGISTRATION SOLENOID / T1 SOLENOID 8.28.1REGISTRATION SOLENOID Page 8.28.2T1 SOLENOID 8.29MAIN SHIELD PLATE / EJECT SENSOR PCB ASSY Page Page Page 8.30RUBBER FOOT 8.31MAIN FRAME L ASSY Page Page Page Page 1.IF YOU REPLACE THE MAIN PCB Page Page Page Page <Procedures ■Setting the default paper size <Procedures ■Setting the serial number <Procedures ■Inputting the adjusted value of the laser scanner <Procedures ■Setting the toner cartridge type ■Backup to the Main PCB of the Wireless LAN PCB Information (HL-2170Wonly) 2.IF YOU REPLACE THE WIRELESS LAN PCB 3.IF YOU REPLACE THE LASER UNIT CHAPTER 5 SERVICE SUPPORT SOFTWARE 1.CONTROL PANEL 1.1List of service support functions 1.2User Mode <Procedure <Function 1)Test Sample Page 2)Print Fonts 3)USB 2.0 FULL Serial Number Return Value Setting 4)Hex Dump Mode 1.3Service Mode Page 9)Factory Inspection Mode 10)Continuous Grid Pattern Print Mode 11)Fixing Unit Test Print 12)NV-RAMValue Dump Mode 13)RAM Check 14)QA Test print 15)Paper Size Setting (A4/Letter) 16)Printing for Maintenance Page 17)Printer Settings ■Page Page Page ■Page 3 18)Sleep Mode Indication (OFF/Dimmed) 19)Sleep Mode Setting (ON/OFF) 20)Developer Roller Counter Reset 1 (For the starter toner cartridge) 21)Developer Roller Counter Reset 2 (For the standard toner cartridge) 2.OTHER SERVICE FUNCTIONS ■Initializing the developing bias ■Wireless LAN setting (HL-2170Wonly) CHAPTER 6 CIRCUIT DIAGRAMS, WIRING DIAGRAM ■Main PCB Circuit Diagram (2/4) ■Main PCB Circuit Diagram (3/4) ■Main PCB Circuit Diagram (4/4) Page Page Page Page APPENDIX 1 SERIAL NUMBERING SYSTEM ■Laser unit serial label <How to Read ■Toner cartridge and Drum unit serial label (in common) <How to read APPENDIX 2 SCREW CATALOGUE APPENDIX 3 DELETION OF PERSONAL INFORMATION APPENDIX 4 REFERENCES APPENDIX 5 GLOSSARY