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Brother International HL 2060 Service Manual - Page 3

Preface - parts manual

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PREFACE This service manual contains basic information required for after-sales service of the laser printer (hereinafter referred to as "this machine" or "the printer"). This information is vital to the service technician in maintaining the high printing quality and performance of the printer. This manual consists of the following chapters: CHAPTER I : GENERAL Features, specifications, etc. CHAPTER II : THEORY OF OPERATION Basic operation of the mechanical system and the electrical system, and their timing. CHAPTER III : ELECTRICAL SYSTEM Theory of the electronics circuit CHAPTER IV : MECHANICAL SYSTEM Requirements for a suitable location, disassembling and reassembling procedure of mechanical system. CHAPTER V : MAINTENANCE AND SERVICING Parts replacement schedule, list of tools, lubricants and cleaners. CHAPTER VI : TROUBLESHOOTING Reference values and adjustment, troubleshooting for image defects, troubleshooting for malfunctions, etc. APPENDICES : Engin Block Daiagram, PCB Circuitry Diagrams, etc. Information in this manual is subject to change due to improvement or re-design of the product. All relevant information in such cases will be supplied in service information bulletins (Technical Information). A thorough understanding of this printer, based on information in this service manual and service information bulletins, is required for maintaining its quality performance and fostering the pratical ability to find the cause of troubles.

Section	Page
sm_hl2060.pdf	1
CONTENTS	4
CHAPTER I	4
CHAPTER II	4
CHAPTER III	5
CHAPTER IV	5
CHAPTER V	6
CHAPTER VI	6
CHAPTER VII	7
APPENDIX A	7
CHAPTER I GENERAL	8
1. FEATURES	8
2. SPECIFICATIONS	8
3. SAFETY INFORMATION	13
3.1 Laser Safety (110 ~ 120V Model only)	13
3.2 CDRH Regulations (110 ~ 120V Model only)	14
3.3 Additional Information	14
4. PARTS OF THE PRINTER	15
4.1 External Views	15
4.2 Cross Sectional View	16
5. STORAGE AND HANDLING OF EP-ED HC CARTRIDGES	17
5.1 Storage of Sealed EP-ED HC Cartridges	17
5.2 Storage of Unsealed EP-ED HC Cartridges	17
CHAPTER II THEORY OF OPERATION	18
1. BASIC OPERATIONS	18
1.1 Mechanical Configuration	18
1.2 Main Drive	19
1.3 Basic Sequence of Operations	20
2. LASER/SCANNER SYSTEM	21
3. IMAGE FORMATION SYSTEM	22
3.1 Outline	22
3.2 Printing Process	22
3.2.1 Electrostatic latent image formation stage	23
3.2.2 Developing stage	25
3.2.3 Transfer stage	26
3.2.4 Fixing stage	27
3.2.5 Drum cleaning stage	27
4. PAPER PICK-UP/FEED SYSTEM	29
4.1 Outline	29
4.2 Cassette Feed	30
4.3 MP Tray Feed	31
4.4 Paper Jam Detection	32
CHAPTER III ELECTRICAL SYSTEM	34
1. MAIN PCB	34
1.1 Outline	34
1.2 Video Controller Circuit	35
1.3 Engine Controller Circuit	39
2. PAPER FEED DRIVE CIRCUIT	40
3. DISPLAY CIRCUIT	42
3.1 Outline	42
3.2 Operation	42
4. LOW-VOLTAGE POWER SUPPLY ASSY	43
4.1 Outline	43
4.2 Protection Functions	43
5. HIGH-VOLTAGE POWER SUPPLY ASSY	45
5.1 Outline	45
5.2 Operation of the Components of the High-Voltage Power Supply Assy	45
CHAPTER IV MECHANICAL SYSTEM	48
Safety Precautions	48
PRINTER DISASSEMBLING PROCEDURE	49
PRINTER BODY	50
1.1 Configuration	50
1.2 Control Panel Unit	50
1.3 Toner Cartridge Lid	51
1.4 Side Cover L	51
1.5 Font Cover ASSY	52
1.6 Upper Cover ASSY, Rear Cover ASSY	52
1.6.1 Upper cover ASSY, Rear cover ASSY	52
1.6.2 Changeover guide, Jam remove cover	54
1.7 Side Cover R	54
1.8 DC Fan Motor	55
1.9 Main PCB	56
1.10 Laser Unit	58
1.11 Cartridge Stopper ASSY	59
1.12 Paper Feed Chassis Unit	60
1.13 Separation pad ASSY	62
1.14 MP PE Sub Actuator	62
1.15 P Feed /Size-sw PCB ASSY	63
1.16 Size-Switch Sprin	63
1.17 Regist sensor actuator	63
1.18 PE Sensor Actuator MP	64
1.19 Tray Sensor Holder	64
1.20 Roller Holder	65
1.21 Paper pick-up roller ASSY, Bearing	65
1.22 Paper Pick-up Solenoid	67
1.23 Paper Feed Motor ASSY	67
1.24 MP Tray Cover	68
1.25 MP Tray ASSY	69
1.26 Paper Path Separation Plate, Paper Path Separation Film	70
1.27 Latch	70
1.28 Fixing unit	71
1.29 Transfer Unit	74
1.30 DC Gear Holder ASSY	75
1.31 PS Switch Wire, Remote Switch	76
1.32 High-Voltage Power Supply PCB ASSY	76
1.33 Low-Voltage Power Supply PCB ASSY	77
1.34 Toner Cartridge (EP-ED HC Cartridge)	78
1.35 Paper Tray	79
CHAPTER V MAINTENANCE AND SERVICING	80
1. PERIODICAL REPLACEMENT PARTS	80
2. CONSUMABLE PARTS STANDARD ENDURANCE TABLE	80
3. LIST OF STANDARD TOOLS	81
4. LIST OF LUBRICANTS AND CLEANERS	82
CHAPTER VI TROUBLESHOOTING	83
1. INTRODUCTION	83
1.1 Initial Check	83
1.2 Basic Procedure	84
2. TEST PRINTING AND MECHANICAL CHECK	84
2.1 Test Printing	84
3. IMAGE DEFECTS	85
3.1 Image Defect Examples	85
3.2 Troubleshooting Image Defects	86
I-1 Light	86
I-2 Dark	87
I-3 Completely blank	88
I-4 All black	88
I-5 Polka dots	89
I-6 Dirt on back of paper	89
I-7, -8 Black vertical streaks or Blurred vertical line	90
I-9 Black and thin horizontal streaks	90
I-10 Black and blurred horizontal stripes	90
I-11 Dropout	91
I-12 White vertical streaks	91
I-13 Faulty registration	92
I-14 Poor fixing	92
4. TROUBLESHOOTING OF MALFUNCTIONS	93
M-1 No DC power supplied	93
M-2 Malfunction of LCD display on the control panel.	93
M-3 Malfunction of control panel LED lamps.	93
M-4 Malfunction of control panel switches	94
M-5 \	94
M-6 \	94
M-7 \	95
M-8 \	95
M-9 \	95
M -10 \	96
M-11 No paper pick-up from cassette (or MP tray)	96
M-12 \	97
M-13 \	99
M-14 \	99
M-15 \	99
M-16 \	100
5. TROUBLESHOOTING PAPER TRANSPORT PROBLEMS	101
5.1 Paper Jams	101
J-1a Paper pick-up block (Pick miss)	102
J-1b Paper pick-up block (Oblique feed jam)	102
J-2 Separation and feed block (Paper jam)	103
J-3 Fixing and paper delivery block (Paper jam)	103
5.2 Incomplete Paper Feed	104
F-1 Double feeding	104
F-2 Wrinkles	104
6. OPERATION	105
6.1 Line Inspection Mode Procedure	105
6.2 DRAM Test	108
7. STATUS MESSAGE LIST	109
Operator Call Messages	109
Error Messages	110
Service Call Messages	113
CHAPTER VII HIDDEN FUNCTIONS	115
1. HIDDEN FUNCTION LIST	115
1.1 Holding down Specified Key(s) at Power on	115
1.2 Off-line and Hold Down MODE + FF + CONT Keys	118
1.3 Off-line and Hold Down CONT + SEL Keys	131
Appendix A 1. Engine Block Diagram	136
Appendix A 2. Paper Feed/Size-SW PCB Circuitry Diagram (1/1	137
Appendix A 3. Main PCB Circuitry Diagram (1/7)	138
Appendix A 4. Main PCB Circuitry Diagram (2/7)	139
Appendix A 5. Main PCB Circuitry Diagram (3/7	140
Appendix A 6. Main PCB Circuitry Diagram (4/7	141
Appendix A 7. Main PCB Circuitry Diagram (5/7)	142
Appendix A 8. Main PCB Circuitry Diagram (6/7)	143
Appendix A 9. Main PCB Circuitry Diagram (7/7)	144
Appendix A 10. Control Panel PCB Circuitry Diagram (1/1)	145
Appendix A 11. Laser LD PCB Circuitry Diagram (1/1)	146
Appendix A 12. SERIAL NO. DESCRIPTIONS	147
pl_hl2060.pdf	149
Contents	151
Power cords, Harnesses	152
List	153
List	153
High-voltage PS	154
List	155
List	155
Covers	156
List	157
PCB attachments	158
List	159
List	159
Chassis	160
List	161
Paper feeder	162
List	163
Paper tray A4, LTR/LGL	164
List	165
List	165
Fixing unit	166
List	167
List	167
Packing materials	168
List	169

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PREFACE

This service manual contains basic information required for after-sales service of the laser printer

(hereinafter referred to as “this machine” or “the printer”). This information is vital to the service

technician in maintaining the high printing quality and performance of the printer.

This manual consists of the following chapters:

CHAPTER

I :

GENERAL

Features, specifications, etc.

CHAPTER II

THEORY OF OPERATION

Basic operation of the mechanical system and the electrical system, and their timing.

CHAPTER III :

ELECTRICAL SYSTEM

Theory of the electronics circuit

CHAPTER IV :

MECHANICAL SYSTEM

Requirements for a suitable location, disassembling and reassembling procedure of

mechanical system.

CHAPTER V :

MAINTENANCE AND SERVICING

Parts replacement schedule, list of tools, lubricants and cleaners.

CHAPTER VI :

TROUBLESHOOTING

Reference values and adjustment, troubleshooting for image defects, troubleshooting

for malfunctions, etc.

APPENDICES :

Engin Block Daiagram, PCB Circuitry Diagrams, etc.

Information in this manual is subject to change due to improvement or re-design of the product.

All relevant information in such cases will be supplied in service information bulletins (Technical

Information).

A thorough understanding of this printer, based on information in this service manual and service

information bulletins, is required for maintaining its quality performance and fostering the pratical

ability to find the cause of troubles.