Brother HL-6050DN Service Manual Page 236
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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HL-6050/6050D/650DN SERVICE MANUAL
6-33
6. IMAGE DEFECTS
6.1 Image Defect Examples
I-2 DarkI-1 Light I-2 Dark I-3 Completely blank
I-4 All black
I-5 Dirt on back of paper
I-6 Black vertical
streaks
I-6 Black vertical
streaks
I-7 Black horizontal
stripes
I-12 Poor fixing
I-13 Image distortion
I-14 Faint print
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Print out test print out test print out test Print out test print oPrint out test print o
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Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
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Print out test print out test print out test Print out test print oPrint out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
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Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
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I-19 Hollow print
I-15 White spots
I-16 Black spots
I-18 Gray background
I-17 Black band
I-20 Downward fogging
of solid black
I-21 Horizontal lines
I-11 Faulty
registration
I-10 White horizontal
streaks
I-8 Black vertical
streaks
I-9 White vertical
streaks
I-23 Ghost
I-22 Light rain
I-24 Toner specks
Fig. 6-21
The diameter and circumference of each roller are listed below;
No. Parts Name Diameter (Circumference)
1 F Roller AML
φ 12.0 mm (37.7 mm)
2 Paper Feed Roller
φ 14.0 mm (44.0 mm)
3 Transfer Roller
φ 15.20 mm (47.7 mm)
4 Photosensitive Drum
φ 29.97 mm (94.1 mm)
5 Heat Roller
φ 34.3 mm (107.7 mm)
6 Pressure Roller
φ 30.0 mm (94.2 mm)
7 Development Roller
φ 20.0 mm (46.5 mm)
- SERVICE MANUAL 1
- PREFACE 3
- TABLE OF CONTENTS 10
- REGULATION 11
- SAFETY INFORMATION 13
- CHAPTER 1 GENERAL 15
- 1. FEATURES 15
- CHAPTER 1 GENERAL 16
- 2. OVERVIEW 17
- 3. SPECIFICATIONS 18
- 3.2 Functions 19
- 3.4 Network (NC-6100H) 21
- 3.5 Paper 22
- 3.6 Printable Area 25
- Physicalpage 27
- Printablearea 27
- Logicalpage 27
- TN4100/TN670 30
- 3 K 1 1 J A 31
- K 3 9 5 1 0 0 1 0 4 A 31
- 3 K 3 0 J 32
- K 3 9 H 0 0 0 1 9 9 A 32
- S A 0 0 0 0 0 0 1 32
- 1.1 Power Supply 33
- 1.2 Environment 33
- 2. UNPACKING 35
- 3. INSTALL THE PRINTER 36
- Fig. 2-2 37
- Fig. 2-3 37
- Fig. 2-7 39
- Fig. 2-8 39
- 4.1 Data LED Indications 40
- 1 and 999 COPIES 42
- 4.3 LCD Display 46
- RESTART PRINTER? 58
- Fig. 2-10 65
- Fig. 2-11 65
- Fig. 2-12 65
- 5.2 Functions 67
- Front cover ASSY 69
- RAM: 32MB 69
- 1.2 Main PCB Block Diagram 70
- 1.3 Main PCB 71
- Fig. 3-4 72
- Fig. 3-5 72
- Fig. 3-6 73
- MASK ROM 74
- (128/64Mbit) 74
- 48PIN TSOP1 74
- 1.3.6 Flash ROM 75
- 1.3.7 SDRAM 76
- Fig. 3-10 77
- Fig. 3-11 78
- Fig. 3-12 78
- 1.4 Engine PCB 82
- 1.5 Power Supply 83
- Fig. 3-20 84
- 2. MECHANICS 85
- 2.2 Paper Transfer 86
- Fig. 3-24 88
- Photosensitive drum 88
- Transfer roller 88
- Regist actuator rear 88
- 2.3 Sensors 90
- Fig. 3-30 92
- Fig. 3-31 92
- Relay PCB unit 92
- PE/PO sensor PCB ASSY 92
- 2.4 Drum Unit 94
- 2.5 Toner Cartridge 95
- 2.6 Print Process 97
- 1. SAFETY PRECAUTIONS 101
- 2. DISASSEMBLY FLOW 102
- 3. DISASSEMBLY PROCEDURE 103
- 3.3 Paper Tray 104
- 3.4 Access Cover 107
- 3.5 Network Board 107
- 3.6 DX Feed ASSY 108
- 3.7 Rear Cover ASSY 112
- 3.8 Top Cover ASSY 113
- 3.9 Side Cover L 115
- 3.10 Side Cover R 116
- 3.11 MP Paper Guide 1 ASSY 116
- 3.13 Exit Roller Unit 118
- 3.14 Laser Unit 120
- 3.15 Fixing Unit 121
- Fig. 4-42 124
- Fig. 4-46 126
- 3.17 Feed MP Unit 133
- 3.18 Fan Motor 80 ASSY 134
- 3.19 Filter 135
- 3.20 Engine PCB 135
- 3.21 Main PCB 136
- 3.22 Fan 40 136
- 3.23 LVPS 137
- Fig. 4-70 138
- LVPS cover 138
- LVPS PCB 138
- 3.24 Photo Interrupter 139
- 3.28 Main Motor 142
- 3.29 Developer Clutch 143
- 3.30 Develop Joint 143
- 3.31 Interlock SW ASSY 144
- 3.32 Relay PCB L ASSY 144
- 3.33 DEV Sensor ASSY 145
- 3.34 Toner LED PCB ASSY 145
- 3.36 Gear 24 146
- 3.37 Plate Motor ASSY 147
- 3.38 DX Sensor PCB 148
- 3.39 Ejection Solenoid ASSY 149
- 3.41 Toner Sensor PCB Unit 151
- 3.42 HVPS PCB ASSY 151
- 3.43 Relay PCB Unit 152
- 3.45 PE/PO Sensor PCB ASSY 153
- 3.46 Tray PE Actuator 154
- 3.47 RE Roller 155
- Fig. 4-104 156
- Fig. 4-106 157
- Fig. 4-108 158
- Fig. 4-110 159
- 4. PACKING 161
- 6. LUBRICATION 165
- Main motor ASSY 166
- Gear 18/48 166
- Fixing drive plate unit 166
- Gear 67 167
- Gear 24 167
- 7. HARNESS ROUTING 169
- Toner sensor PCB unit 170
- 1. CONSUMABLE PARTS 174
- Fig.5-7 176
- 1.2 Toner Cartridge 177
- Fig. 5-15 179
- Fig.5-16 181
- Fig.5-17 181
- Paper tray 181
- DX feed ASSY 181
- Fig.5-22 184
- Fig.5-23 184
- Fig.5-29 188
- Fig.5-32 190
- Separation plate ASSY 190
- Fig.5-35 192
- Drum unit 192
- Process unit cover ASSY 192
- Fig.5-36 193
- Fig.5-37 193
- 3. PERIODICAL CLEANING 199
- Fig.5-49 200
- Fig. 5-50 200
- Home position 200
- Fig.5-51 201
- Fig. 5-52 202
- 4. MTBF / MTTR 203
- 1. INTRODUCTION 204
- CHAPTER 6 TROUBLESHOOTING 205
- 1.3 Identify the Problem 206
- 2.1 Operator Calls 207
- ERROR ### 210
- SERVICE CALL 210
- 2.2 Service Calls 210
- 3. PAPER PROBLEMS 214
- Fig. 6-1 216
- Fig. 6-2 217
- Fig.6-4 217
- Fig. 6-10 220
- Fig. 6-11 220
- Fig. 6-12 220
- Fig.6-13 221
- Fig.6-14 221
- Fig.6-15 221
- Fig. 6-16 222
- Fig. 6-17 222
- Fig. 6-18 222
- Fig. 6-19 223
- Fig. 6-20 223
- 3.3 Paper Feeding Problems 225
- F-1 Double feeding 225
- F-2 Wrinkles or creases 225
- F-3 Page skew 225
- F-4 Curl or Wave 226
- 5. MALFUNCTIONS 230
- M-3 No paper supplied 231
- M-6 BD failure 232
- M-7 Scanner failure 233
- M-8 Fuser failure 233
- M-10 SXX error 234
- M-11 E41 error 234
- M-12 TR Release Motor Error 235
- 6. IMAGE DEFECTS 236
- I-1 Light 237
- I-2 Dark 238
- I-3 Completely blank 239
- I-4 All black 240
- I-9 White vertical streaks 244
- I-11 Faulty registration 245
- I-12 Poor fixing 245
- I-13 Image distortion 246
- I-14 Faint print 246
- I-15 White spots 247
- I-16 Black spots 249
- I-17 Black band 250
- I-18 Gray background 251
- I-19 Hollow print 251
- I-21 Horizontal lines 252
- I-22 Light rain 253
- I-23 Ghost 253
- I-24 Toner specks 254
- 7. INCORRECT PRINTOUT 256
- 8. NETWORK PROBLEM 259
- 8.2 Intermittent Problem 260
- 8.3 TCP/IP Troubleshooting 261
- 8.4 UNIX Troubleshooting 261
- Troubleshooting 263
- 8.13 DLC/LLC Troubleshooting 266
- 2.2 Function Table 269
- 3. SERVICE MENU MODE 274
- Machine on 279
- 5. PRINT SETTINGS 281
- Fig. 7-2 284
- 6.2 Diagnostics 285
- Fig. 7-5 286
- 6.3 Printer Information 287
- 7. NVRAM DEFAULT VALUE 288
- 9. NVRAM BACKUP 296
- APPENDIX 297
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