Brother HL-5450DNT Service Manual Page 172
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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9.26 Toner sensor PCB ASSY
(1) Remove the MP sector gear spring from the main frame L ASSY.
(2) Release the toner sensor harness from the securing fixtures.
(3) Release the two hooks to remove the toner sensor PCB ASSY from the main frame L
ASSY.
(4) Release the two hooks to remove the toner LED holder from the toner sensor PCB
ASSY.
Fig. 3-54
Harness routing: Refer to “2.Relay front PCB ASSY”.
Toner sensor PCB ASSY
Hook
Toner LED
holder
Hook
Toner sensor PCB ASSY
Toner sensor harness
MP sector gear spring
Main frame L ASSY
Hooks
- SERVICE MANUAL 1
- TRADEMARKS 3
- REGULATION 10
- WARNING 11
- CAUTION 11
- Radio Interference 12
- Important 13
- SAFETY INFORMATION 16
- To use the Machine Safely 17
- HOT SURFACE 19
- Additional Information 20
- CHAPTER 1 21
- CHAPTER 1 SPECIFICATIONS 22
- 1. SPECIFICATIONS LIST 23
- <Computer requirements> 26
- 1.2 Network Connectivity 27
- 1.3 Service Information 28
- 1.4 Supplies 29
- 1.5 Paper 31
- 1.5.3 Type and size of paper 32
- 1.6 Printable Area 33
- CHAPTER 2 34
- CHAPTER 2 TROUBLESHOOTING 35
- 1. INTRODUCTION 37
- Operating environment 38
- Power supply 38
- Consumable parts 38
- 2. OVERVIEW 40
- 2.2 Paper Feeding 41
- 2.3 Operation of Each Part 42
- 2.4 Block Diagram 44
- 2.5 Main Components 45
- 3. ERROR INDICATIONS 46
- 3.2 Error Messages 52
- 3.3 LED Display (LED Model) 55
- 4. TROUBLESHOOTING 64
- Error code 0E00 65
- Error code 0F00 65
- Error codes 1000 to 1D00 65
- Error code 1E00 66
- Error codes 1F00 to 3500 66
- Error code 3600 66
- Error codes 3700 to 3A00 66
- Error code 3B00 67
- Error codes 3C00 to 4300 67
- Error code 4400 67
- Error codes 4500 to 4F00 67
- Error code 5000 68
- Error code 5100 68
- Error code 5200 68
- Error code 5300 68
- Error code 5400 68
- Error code 5500 69
- Error code 5600 69
- Error code 5700 70
- Error code 5800 71
- Error code 5900 71
- Error codes 5A00 to 6200 71
- Error code 6300 72
- Error codes 6400 to 6600 72
- Error code 6700 72
- Error codes 6800 and 6900 72
- Error code 7000 74
- Error code 7100 74
- Error code 7200 74
- Error codes 7300 and 7400 74
- Error code 7500 74
- Error code 7600 75
- Error code 7800 75
- Error code 7A00 75
- Error codes 7B00 and 7C00 76
- Error code 7D00 76
- Error codes 7E00 to 8200 76
- Error code 8300 76
- Error code 8400 77
- Error code 8500 77
- Error codes 8600 and 8700 78
- Error code 8800 78
- Error code 8900 78
- Error code 8A00 79
- Error code 8B00 79
- Error code 8C00 80
- Error code 8D00 80
- Error codes 8E00 and 8F00 80
- Error code 9000 81
- Error code 9100 81
- Error code 9200 81
- Error code 9300 81
- Error code 9400 82
- Error code 9500 82
- Error code 9600 83
- Error codes 9700 and 9800 83
- Error code 9900 83
- Error code 9A00 84
- Error codes 9B00 to A000 84
- Error code A100 85
- Error codes A200 to BF00 85
- Error code C000 85
- Error codes C100 to C600 86
- Error code C700 86
- Error code C800 86
- Error code C900 86
- Error codes CA00 to DC00 87
- Error code DD00 87
- Error code DE00 88
- Error code DF00 88
- Error code E000 88
- Error code E100 88
- Error code E200 89
- Error codes E300 and E400 89
- Error code E600 89
- Error codes E700 to EB00 90
- Error code EC00 90
- Error code ED00 90
- Error code EE00 90
- Error code EF00 91
- Error code F000 91
- Error codes F100 to F800 91
- Error code F900 92
- Error codes FA00 to FF00 92
- 4.2.2 Paper becomes wrinkled 93
- 4.2.5 Paper is curled 94
- 4.3.1 Image defect examples 95
- Fig. 2-6 97
- Fig. 2-7 97
- Faulty registration 98
- Poor fixing 99
- Completely blank 99
- Image distortion 100
- All black 100
- Dirt on the back of paper 101
- Vertical streaks 101
- Black band 102
- White horizontal streaks 103
- Black horizontal stripes 104
- Faint print 105
- White spots 106
- Black spots 107
- Fogging 108
- 4.4.1 Cannot print data 109
- Confidential 110
- 4.6.2 LEDs are not activated 111
- 4.7.3 Drum error 112
- 4.8.1 Fuser unit failure 113
- 4.9.1 Laser unit failure 114
- 4.10.1 Main PCB failure 115
- 4.11.3 Main motor failure 116
- CHAPTER 3 117
- CONTENTS 118
- 1. SAFETY PRECAUTIONS 120
- 2. PACKING 121
- Screw pan (S/P washer) 122
- Screw pan 122
- Screw bind 122
- 4. SCREW TORQUE LIST 123
- 5. LUBRICATION 125
- Fig. 3-5 126
- Fig. 3-6 126
- Fig. 3-7 127
- Fig. 3-8 127
- 7. HARNESS ROUTING 128
- 1 Main PCB ASSY 128
- 2 Relay front PCB ASSY 129
- 3 Fuser unit 130
- 5 Toner LED PCB ASSY/Main fan 131
- 6 Laser unit 131
- 9. DISASSEMBLY PROCEDURE 134
- 9.2 Paper tray 1 135
- Fig. 3-12 136
- 9.3 Back cover / Outer chute 137
- 9.4 Fuser cover 138
- 9.5 MP cover ASSY 139
- 9.6 Front cover ASSY 140
- Fig. 3-20 141
- 9.8 Side cover R 142
- 9.9 Top cover ASSY 143
- Fig. 3-23 144
- 9.10 Control panel 145
- LCD model 146
- Fig. 3-26 147
- 9.11 Paper stack lever 148
- Fig. 3-28 149
- 9.13 Fuser unit 150
- Fig. 3-30 151
- Fig. 3-31 151
- Fig. 3-32 152
- Fig. 3-33 152
- 9.14 Main PCB ASSY 153
- Fig. 3-35 154
- 9.15 Laser unit 155
- Fig. 3-37 156
- Fig. 3-38 157
- Fig. 3-39 158
- Fig. 3-40 158
- 9.17 Toner LED PCB ASSY 159
- Fig. 3-42 160
- 9.18 Main fan 161
- Fig. 3-44 162
- 9.19 Air duct / Filter 163
- 9.20 Relay front PCB ASSY 164
- Fig. 3-47 165
- 9.22 Main frame L ASSY 166
- Fig. 3-49 167
- 9.23 Main motor ASSY 168
- Fig. 3-51 169
- Fig. 3-52 170
- 9.25 LT drive gear 29 171
- 9.26 Toner sensor PCB ASSY 172
- 9.27 MP solenoid 173
- Fig. 3-56 174
- 9.29 New toner actuator 175
- 9.30 Fuser drive gear 39 176
- Fig. 3-59 177
- 9.31 Duplex solenoid 178
- 9.32 Back cover sensor 179
- 9.33 LT connector (T1) 180
- 9.34 T1 roller holder ASSY 181
- Fig. 3-64 182
- Fig. 3-65 183
- Fig. 3-66 184
- 9.36 Eject sensor PCB ASSY 185
- Fig. 3-68 186
- Fig. 3-69 187
- Fig. 3-70 188
- Fig. 3-71 189
- Fig. 3-72 190
- Fig. 3-73 191
- Fig. 3-74 192
- Fig. 3-75 193
- Fig. 3-76 194
- 10.1 Paper tray 2 195
- Fig. 3-79 196
- 10.2 T2 roller holder ASSY 197
- 10.3 T2 side cover L 198
- 10.4 T2 side cover R 199
- 10.5 T2 front cover ASSY 200
- 10.6 T2 relay PCB ASSY 201
- 10.7 T2 clutch 202
- Fig. 3-88 203
- Fig. 3-89 203
- Fig. 3-90 204
- Fig. 3-91 204
- Fig. 3-92 205
- Fig. 3-93 206
- 10.9 T2 back cover 207
- 10.10 LT connector ASSY (T2) 208
- CHAPTER 4 209
- What you need to prepare 211
- LED model 214
- LCD model 214
- Fig. 4-1 216
- Fig. 4-2 219
- POWER SUPPLY PCB ASSY 220
- REPLACEMENT PARTS 222
- CHAPTER 5 223
- CHAPTER 5 SERVICE FUNCTIONS 224
- 1. MAINTENANCE MODE 226
- <Function> 231
- <Operation Procedure> 231
- WSWXX = 0 0 0 0 0 0 0 0 233
- Order of pressing buttons 236
- Location of sensors 240
- Fig. 5-6 246
- Fig. 5-7 248
- Fig. 5-8 250
- <Country code list> 253
- 1.4.1 Test printing 260
- 1.4.2 Print font list 261
- 1.4.4 HEX Dump mode 261
- 1.4.8 Check sensor operation 263
- Fig. 5-13 264
- 1.4.11 Print EEPROM Dump 265
- 1.4.12 Check RAM 265
- Fig. 5-14 266
- Fig. 5-15 268
- 1.4.17 Maintenance printing 269
- (First side) (Second side) 271
- 1.4.22 USB speed lock mode 272
- 2. PRINTER SETTINGS 274
- •LCD model 275
- Printer Settings (1st page) 276
- Printer Settings (2nd page) 276
- Life of toner cartridge 277
- Life of drum unit 280
- 3. OTHER SERVICE FUNCTIONS 282
- Change USB No. return value 284
- Model only) 286
- CHAPTER 6 287
- CHAPTER 6 WIRING DIAGRAM 288
- 1. WIRING DIAGRAM 289
- CHAPTER 7 290
- 2.1 Preparation 293
- 2.2 Fuser unit 294
- Fig. 7-4 295
- Fig. 7-5 295
- Fig. 7-6 296
- Fig. 7-7 296
- Fig. 7-8 297
- 2.3 Laser unit 298
- Fig. 7-11 299
- Fig. 7-12 299
- Fig. 7-13 300
- Fig. 7-14 301
- Fig. 7-15 302
- 2.4 MP paper feeding kit 303
- 2.5 Paper feeding kit 1 304
- Fig. 7-19 305
- 2.6 Paper feeding kit 2 306
- Fig. 7-22 307
- Fig. 7-23 307
- APPENDIX 1 308
- <How to Read> 309
- <Location> 309
- APPENDIX 2 310
- <Operating Procedure> 311
- Common to all models 311
- APPENDIX 3 312
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