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Brother International hl 1650 Service Manual - Page 125

Fixing Unit - laser printer

UPC - 012502526827

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&+$37(5 ',6$66(0%/< $1' 5($66(0%/< ! CAUTION: • Never touch the reflect mirror and lens inside the laser unit. If there is any dirt or dust on the mirror or lens, blow it off using an air gun. • Never touch the scanner window on the printer body. If there is any dirt or dust on the window, blow it off using an air gun. If cleaning the underside of the scanner window, wipe off dirt or dust with soft clean paper. Refer to subsection 3.3 'Cleaning the Scanner Window' in CHAPTER 5. Laser unit Reflect mirror Printer body Scanner window Lens Fig. 4-48 3.12 Fixing Unit (1) Place the main frame on its base so that the rear side is facing you. (2) Disconnect the two connectors of the heater harness and release the harness from the hooks on the right side of the fixing unit. (3) Remove the shoulder screw and the cup S M3x8 Taptite screw securing the fixing unit. (4) Remove the fixing unit from the main frame. Main frame Fixing unit Shoulder screw Heater harness Taptite, cup S M 3x8 Thermistor connector Fig. 4-49 4-27

Section	Page
HL-1650, HL-1670N Service Manual.pdf	1
PREFACE	3
TABLE OF CONTENTS	4
REGULATION	10
SAFETY INFORMATION	12
CHAPTER 1 GENERAL	15
1. FEATURES	15
2. OVERVIEW	17
3. SPECIFICATIONS	18
3.1 Printing	18
3.2 Functions	19
3.3 Electrical and Mechanical	20
3.4 Network	21
3.5 paper	22
3.5.1 Feedable paper	22
3.5.2 Paper cassette capacity	24
3.5.3 Print delivery	24
3.6 Printable Area	25
3.6.1 PCL5e/EPSON/IBM emulation	25
3.6.2 PCL6/BR-Script3 emulation	28
CHAPTER 2 INSTALLATION AND BASIC OPERATION	29
1. CONDITIONS REQUIRED FOR INSTALLATION	29
1.1 Power Supply	29
1.2 Environment	29
1.3 System Requirements for Brother Printer Solution for Windows	29
2. UNPACKING	30
3. INSTALL THE PRINTER	31
3.1 For All Users	31
3.1.1 Install the drum unit assembly	32
3.1.2 Load paper into the paper cassette	32
3.1.3 Print a test page	33
3.2 For Windows Users	34
3.3 For Macintosh Users	38
4. PRINTING METHODS	40
4.1 Printing from the Paper Cassette	40
4.2 Printing from Multi-purpose Tray	40
4.2.1 Printing on envelopes (Face up printing)	42
4.2.2 Printing on label, transparency, etc.	43
4.3 Printing to the Face up Output Tray (Face up Printing)	45
4.4 Printing on Both Sides of the Paper (Duplex Printing)	45
4.5 Manual Feed	46
5. CONTROL PANEL OPERATION	47
5.1 Data LED Indications	47
5.2 Panel Switches Functions	48
5.2.1 Go switch	48
5.2.2 Job Cancel switch	48
5.2.3 Reprint switch	49
5.2.4 +&- switch	52
5.2.5 Set switch	52
5.2.6 Back switch	52
5.3 LCD Display	52
5.3.1 Backlights	53
5.3.2 Printer status messages	54
5.4 How to Use the Control Panel	55
5.5 Control Panel Setting Menu	56
5.5.1 Information	57
5.5.2 Paper	57
5.5.3 Quality	58
5.5.4 Setup	58
5.5.5 Print menu	59
5.5.6 Network	62
5.5.7 Interface	62
5.5.8 Reset menu	63
5.5.9 Set IP address	63
5.5.10 About emulation modes	64
5.5.11 List of factory settings	64
5.6 Other Control Features	68
5.6.1 Sleep mode	68
5.6.2 Inspection mode	68
6. NETWORK BOARD OPERATION	69
6.1 Installing the Network Board	69
6.2 Functions	71
6.2.1 LED functions	71
6.2.2 Factory default setting	71
CHAPTER 3 THEORY OF OPERATION	73
1. ELECTRONICS	73
1.1 General Block Diagram	73
1.2 Main PCB Block Diagram	74
1.3 Main PCB	75
1.3.1 ASIC	75
1.3.2 ROM	77
1.3.3 Flash ROM	78
1.3.4 SDRAM	79
1.3.5 Optional RAM	81
1.3.6 PCI bus	82
1.3.7 EEPROM	83
1.3.8 Reset circuit	83
1.3.9 Engine I/O	84
1.3.10 Panel I/O	84
1.4 Engine PCB	85
1.5 BR-net PCB	85
1.6 Power Supply	86
1.6.1 Low-voltage power supply	86
1.6.2 High-voltage power supply	87
2. MECHANICS	88
2.1 Overview of Printing Mechanism	88
2.2 Paper Transfer	90
2.2.1 Paper supply	90
2.2.2 Paper registration	90
2.2.3 Paper eject	91
2.2.4 Duplex printing	91
2.3 Sensors	92
2.3.1 Cover sensors	92
2.3.2 Toner sensors	92
2.3.3 DX tray sensor/DX paper size sensor	93
2.3.4 Rear cover sensor	93
2.3.5 Cassette sensor/Paper empty sensor	94
2.3.6 Paper eject sensor	94
2.4 Drum Unit	95
2.4.1 Photosensitive drum	95
2.4.2 Primary charger	95
2.4.3 Transfer roller	95
2.4.4 Cleaner	95
2.5 Toner Cartridge	95
2.6 Print Process	95
2.6.1 Charging	95
2.6.2 Exposure stage	96
2.6.3 Developing	97
2.6.4 Transfer	97
2.6.5 Fixing stage	98
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY	99
1. SAFETY PRECATIONS	99
2. DISASSEMBLY FLOW	100
3. DISASSEMBLY PROCEDURE	101
3.1 AC Cord	101
3.2 Drum Unit	101
3.3 Paper Cassette	102
3.4 Network Board (For HL-1670N only)	109
3.5 Top Cover	110
3.6 DX Feed ASSY	114
3.7 Rear Cover	118
3.8 Rear Cover R&L/Side Cover R&L	120
3.9 MP Cover ASSY	121
3.10 Process Unit Cover ASSY	123
3.11 Laser Unit	124
3.12 Fixiing Unit	125
3.13 Paper Pick-up Roller ASSY	137
3.14 Feed MP Unit	138
3.15 Drive Unit	140
3.16 Low-voltage Power Supply PCB ASSY	145
3.17 Main PCB ASSY	146
3.18 Fan Motor/Fan Motor 60	146
3.19 Base Plate	147
3.20 Engine PCB ASSY/High-voltage Power Supply PCB ASSY	147
3.21 DX Sensor PCB ASSY	149
3.22 Toner Sensor PCB Unit (Light Reception)	150
3.23 Toner LED PCB Unit (Light Emission)	150
3.24 Paper Feed Roller ASSY	151
3.25 First Feed Roller ASSY	151
3.26 Exit Roller Unit	153
3.27 Harness Winding Form	155
4. PACKING	156
CHAPTER 5 PERIODIC MAINTENANCE	157
1. CONSUMABLE PARTS	157
1.1 Drum Unit	157
1.2 Toner Cartridge	158
2. PERIODICAL REPLACEMENT PARTS	161
3. PERIODICAL CLEANING	162
3.1 Cleaning the Printer Exterior	162
3.2 Cleaning the Drum Unit	162
3.3 Cleaning the Scanner Window	163
3.4 Cleaning the Electrical Terminals	164
4. MTBF/MTTR	165
CHAPTER 6 TROUBLESHOOTING	167
1. INTRODUCTION	167
1.1 Initial Check	167
1.2 Warnings for Maintenance Work	168
1.3 Identify the Problem	169
2. OPERATOR CALLS & SREVICE CALLS	170
2.1 Operator Calls	170
2.2 Service Calls	172
3. PAPER PROBLEMS	175
3.1 Paper Loading Problems	175
3.2 Paper Jams	176
3.2.1 Cleaning Jammed paper	177
3.2.2 Causes & countermeasures	185
3.3 Paper Feeding Problems	186
4. SOFTWARE SETTING PROBLEMS	188
5. MALFUNCTIONS	191
6. IMAGE DEFECTS	197
6.1 Image Defect Examples	197
6.2 Troubleshooting Image Defect	198
6.3 Location of Grounding Contacts	216
6.3.1 Drum Unit	216
6.3.2 Printer body & Paper cassette	216
7. INCORRECT PRINTOUT	217
8. NETWORK PROBLEM	220
8.1 Installation Problem	220
8.2 Intermittent Problem	221
8.3 TCP/IP Troubleshooting	222
8.4 UNIX Troubleshooting	222
8.5 Windows NT/LAN Server (TCP/IP) Troubleshooting	223
8.6 Windows 95/98/Me (or later) Peer to Peer Print (LPR) Troubleshooting	223
8.7 Windows 95/98/Me (or later) Peer to Peer (HP JetAdmin Compatible Method) Troubleshooting	224
8.8 Windows 95/98/Me/NT4.0/2000 (or later) Peer to Peer Print (NetBIOS) Troubleshooting	224
8.9 Internet Print (TCP/IP) Troubleshooting	224
8.10 Novell Netware Troubleshooting	225
8.11 AppleTalk Troubleshooting	225
8.12 Apple TCP/IP Printing (System 8.6 or later)	226
8.13 Web Browser Troubleshooting (TCP/IP)	226
9. INSPECTION MODE	227
9.1 Entering Inspection Mode	227
9.2 Sensor Check Mode	228
CHAPTER 7 HIDDEN FUNCTIONS	231
1. ENTERING HIDDEN FUNCTION MENU MODES	231
2. PROFESSIONAL MENU MODE	232
2.1 Enabling and Disabling Professional Menu Mode	232
2.2 Function Table	233
3. SERVICE MENU MODE	237
3.1 Entering the Service Menu Mode	237
3.2 Function Table	237
4. OTHER HIDDEN FUNCTION MENUS	239
4.1 Hidden Function Menus Enabled by Pressing Switch(es) When Turnign the Machine on	239
4.2 Drum Life Reset Function	239
4.3 Parts Life Recet Function	239
APPENDIX 1. CONNECTION DIAGRAM, HL-1650/1670N	241
APPENDIX 2. MAIN PCB CIRCUIT DIAGRAM, HL-1650/1670N (1/6)	242
APPENDIX 3. MAIN PCB CIRCUIT DIAGRAM, HL-1650/1670N (2/6)	243
APPENDIX 4. MAIN PCB CIRCUIT DIAGRAM, HL-1650/1670N (3/6)	244
APPENDIX 5. MAIN PCB CIRCUIT DIAGRAM, HL-1650/1670N (4/6)	245
APPENDIX 6. MAIN PCB CIRCUIT DIAGRAM, HL-1650/1670N (5/6)	246
APPENDIX 7. MAIN PCB CIRCUIT DIAGRAM, HL-1650/1670N (6/6)	247
APPENDIX 8. ENGINE PCB CIRCUIT DIAGRAM, HL-1650/1670N (1/2)	248
APPENDIX 9. ENGINE PCB CIRCUIT DIAGRAM, HL-1650/1670N (2/2)	249
APPENDIX 10. NETWORK BOARD PCB CIRCUIT DIAGRAM, HL-1650/1670N	250
APPENDIX 11. LOW-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM (100V)	251
APPENDIX 12. LOW-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM (200V)	252
APPENDIX 13. HIGH-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM	253
APPENDIX 14. SERIAL NO. DESCRIPTIONS	254
APPENDIX 15. DIAMETER/CIRCUMFERENCE OF ROLLERS	256
APPENDIX 16. PRINT SPEEDS WITH VARIOUS SETTINGS	257
APPENDIX 17. HOW TO KNOW DRUM UNIT LIFE & PAGE COUNTER	258
1. Printing out the Print Configuration Page	258
2. How to Read the Drum Unit Life	259
3. How to Read the page Coutner	260
4. How to Read the Maintenance Information	261
APPENDIX 18. HOW TO USE THE SELF-DIAGNOSTICS TOOLS	263
1. Troubleshooting for Printer won't print	263
2. Diagnostics	264
3. Printer Information	266
APPENDIX 19. NVRAM DEFAULT VALUE	267
APPENDIX 20. PAPER CASSETTE INFORMATION (FOR EUROPE ONLY)	268
INDEX	269
pl_hl16x0.pdf	275
NOTE	276
CONTENTS	277
1.FRAME/DRIVE UNIT	278
Drawing	278
List	278
2.LASER UNIT	278
Drawing	278
List	278
3.PAPER FEEDER/MP UNIT	279
Drawing	279
List	279
4.DUPLEX	280
Drawing	280
List	280
5.PAPER CASSETTE	281
Drawing	281
List	281
6.FIXING UNIT	282
Drawing	282
List	282
7.COVERS	283
Drawing	283
List	283
8.MAIN PCB	284
Drawing	284
List	284
9.ENGINE PCB	285
Drawing	285
List	285
10.LOW-VOLTAGE POWER SUPPLY PCB	285
Drawing	285
List	285
11.HIGH-VOLTAGE POWER SUPPLY PCB	286
Drawing	286
List	286
12.ACCORDS	286
Drawing	286
List	286
13.ACCESSORIES	287
Drawing	287
List	287
14.PACKING MATERIALS	288
Drawing	288
List	288
15. NETWORK BOARD	288
Drawing	288
List	288
16.PERIODICAL MAINTENANCE PARTS	289
Drawing	289