Brother 1270N Manual do Utilizador Página 45
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CHAPTER 3 THEORY OF OPERATION
3-3
Fig. 3-3 shows a general block diagram of the HL-1270N printer.
Optional RAM (SIMM)
(max. 32Mbytes)
Ethernet
10/100 Base TX
Expansion
memory I/O
PCI bus
Video control block
Engine control block
Operation block
(Control panel)
Control system
Low-voltage power
supply block
High-voltage power
supply block
Laser unit
Drive block
(DC motor)
Drum unit
Transfer block
Drum
Charging
block
External deviceExternal device
Paper tray unit
Paper cassette
Manual feed
Fixing unit
Paper eject block
Paper feed system
Image generation system
Interface block
(Parallel / USB)
RAM 4MB
Paper dust
cleaner block
Developing
block
Toner cartridge
Network board
Fig. 3-3
HL-1270N
- SERVICE MANUAL 1
- TABLE OF CONTENTS 4
- APPENDICES 8
- REGULATION 10
- SAFETY INFORMATION 11
- CHAPTER 1 GENERAL 13
- CHAPTER 1 GENERAL 14
- 2. OVERVIEW 16
- 10/100BASE TX 16
- L F A TEST 16
- 3. SPECIFICATIONS 17
- 3.2 Functions 18
- 3.5 Paper 20
- 3.6 Printing Area 23
- 1.1 Power Supply 25
- 1.2 Environment 25
- 2. UNPACKING 26
- 3. INSTALL THE PRINTER 27
- Fig. 2-4 28
- Fig. 2-5 28
- Fig. 2-6 28
- Fig. 2-7 28
- 3.2 For Windows 29
- Users with No CD-ROM Drive 29
- Fig. 2-12 30
- Fig. 2-13 30
- Parallel interface 30
- 98 only) 31
- Fig. 2-17 32
- Fig. 2-18 32
- Fig. 2-19 32
- Fig. 2-20 32
- Fig. 2-21 33
- Fig. 2-22 33
- 4. PAPER HANDLING 34
- Fig. 2-25 35
- Fig. 2-26 35
- Fig. 2-27 36
- 5. CONTROL PANEL OPERATION 37
- 5.3 Drum LED Indications 38
- 5.4 Alarm LED Indications 38
- 5.6 Other Control Features 39
- 5.6.2 Test print mode 40
- Fig. 2-29 41
- Fig. 2-30 41
- Fig. 2-31 41
- 42
- 1. ELECTRONICS 43
- Fig. 3-2 44
- HL-1270N 45
- 1.2 Main PCB Block Diagram 46
- Fig. 3-5 47
- 1.3 Main PCB 49
- Fig. 3-8 51
- Fig. 3-9 52
- Fig. 3-10 52
- Fig. 3-12 54
- Fig. 3-13 54
- HL-1250/1270N 55
- 1.3.5 Optional RAM 56
- Fig. 3-16 57
- Fig. 3-17 57
- Fig. 3-18 58
- Fig. 3-19 58
- Fig. 3-20 58
- Fig. 3-21 58
- Fig. 3-22 59
- Fig. 3-23 59
- Fig. 3-24 59
- 1.4 Engine PCB 60
- 1.6 Power Supply 61
- Fig. 3-26 62
- 2. MECHANICS 63
- Fig. 3-28 64
- 2.2 Paper Transfer 65
- 2.3 Sensors 66
- 2.4 Drum Unit 67
- 2.5 Toner Cartridge 67
- 2.6 Print Process 68
- Surface Potential (V) 69
- 1. SAFETY PRECAUTIONS 71
- 3. DISASSEMBLY PROCEDURE 73
- 3.3 Paper Cassette 74
- (1) Open the rear cover 80
- 3.5 Front Cover 81
- 3.6 Top Cover 82
- 3.7 Main Cover 83
- 3.8 Laser Unit 85
- 3.9 Drive Unit 86
- 3.10 Fixing Unit 88
- Paper eject actuator 98
- Fixing unit cover 98
- Eject actuator spring 98
- 3.11 Base Plate 99
- 3.12 Main PCB ASSY 101
- Fig. 4-55a 103
- AC inlet ASSY 103
- 3.16 Panel PCB ASSY 106
- 3.17 Solenoid ASSY 106
- 3.18 Fan Motor ASSY 109
- 3.22 Paper Feed Roller ASSY 112
- 3.23 Outer Chute 1 113
- 4. PACKING 114
- 1. CONSUMABLE PARTS 115
- 1.2 Toner Cartridge 116
- Fig. 5-4 117
- Fig. 5-5 117
- Fig. 5-6 117
- 3. PERIODICAL CLEANING 119
- CAUTION: 120
- 4. MTBF / MTTR 121
- 1. INTRODUCTION 123
- CHAPTER 6 TROUBLESHOOTING 124
- The printer does not print 125
- Printed page has a problem 125
- 2.1 Operator Calls 126
- 2.2 Service Calls 126
- Time delay 127
- : OFF : ON 127
- 3. ERROR MESSAGES 128
- 3.2 Error Message Printouts 130
- 4. PAPER PROBLEMS 131
- 4.2 Paper Jams 132
- 4.3 Paper Feeding Problems 134
- F-1 Double feeding 134
- F-2 Wrinkles or creases 134
- F-3 Page skew 135
- F-4 Curl or Wave 135
- 5. SOFTWARE SETTING PROBLEMS 136
- (HL-1250 only) 138
- (HL-1240/1250/1270N only) 138
- 6. MALFUNCTIONS 140
- M-4 No paper supplied 141
- M-7 BD failure 142
- M-8 Scanner failure 143
- M-9 Fuser failure 143
- M-12 Engine interface error 144
- 7. IMAGE DEFECTS 145
- I-1 Light 146
- I-2 Dark 147
- I-3 Completely blank 148
- I-4 All black 149
- I-5 Dirt on the back of paper 150
- I-9 White vertical streaks 153
- I-10 White horizontal stripes 153
- I-11 Faulty registration 154
- I-12 Poor fixing 154
- I-13 Image distortion 155
- I-14 Faint print 155
- I-15 White spots 156
- I-16 Black spots 158
- I-17 Black band 158
- I-18 Gray background 159
- I-19 Hollow print 159
- I-21 Horizontal lines 160
- I-22 Light rain 161
- I-23 Ghost 161
- I-24 Toner specks 162
- 8. INCORRECT PRINTOUT 164
- 9.1 Installation Problem 167
- 9.2 Intermittent Problem 168
- 9.3 TCP/IP Troubleshooting 169
- 9.4 UNIX Troubleshooting 169
- Troubleshooting 171
- 10. INSPECTION MODE 174
- 10.2 Inspection Mode 175
- Fig. 6-12 176
- Fig. 6-13 176
- (HL-1250/1270N only) 176
- X X X X X X G 9 J 1 1 1 1 0 1 179
- 9 F 3 0 J 179
- F 9 9 1 0 0 1 0 4 179
- E 9 0 0 1 0 2 180
- F 9 9 6 0 0 1 9 9 180
- 2 1 0 0 1 180
- APPENDIX 181
- Fig. A-1 183
- Page counter and 183
- Fig. A-2 184
- Drum Life 185
- 00000090909090909 185
- MZ-L160003F000000 185
- Fig. A-8 188
- Fig. A-7 188
- Fig. A-9 189
- 2. Diagnostics 190
- Fig. A-12 191
- 3. Printer Information 192
- Fig. A- 15 194
- Cutting position 194
- Plastic rib 194
- Paper tray cover 194
- AC INPUT 195
- HALOGEN HEATER LAMP 196
- CODE UK4352000 198
- B512040CIR (1/2) 198
- B512040CIR (2/2) 199
- CODE UK4361000 200
- B512049CIR (1/5) 200
- B512049CIR (2/5) 201
- B512049CIR 202
- B512049CIR (4/5) 203
- B512049CIR (5/5) 204
- CODE UK4444000 205
- B512059CIR 205
- CODE LJ8107000 207
- B512058CIR 207
- Low-voltage PS Circuit 208
- (110 - 120V) 208
- (220 - 240V) 209
- High-voltage PS Circuit 210
- ENGINE PCB 212
- PARTS REFERENCE LIST 219
- B48K056 - 201A 220
- CONTENTS 221
- (LIGHT RECEPTION) B512037 222
- PR2001023 223
- 3. PAPER FEEDER 225
- 4. FIXING UNIT 227
- 5. PAPER CASSETTE 230
- HL-1270/1270N 234
- T/I NO. PR99188 / PR2000113 236
- T/I NO. PR99179 / PR2000055 238
- MODEL HL-1270N 84U-Z03-150 241
- PRT-001f 243
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