Brother DCP-7057 Service Manual Page 79
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- Table of contents
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■ Error code 6C
Fuser unit error. (The center thermistor does not detect 60 °C within the specified time.)
■ Error code 6D
Fuser unit error. (The center thermistor does not detect 60 °C within the specified time.)
■ Error code 6E
This error does not usually occur in the normal use. The conceivable causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
Error, which cannot be specified, occurs.
Print Unable 6C
Turn the power off and then back on again.
Print Unable 6D
Turn the power off and then back on again.
Step Cause Remedy
1
Fuser unit connector connection
failure
Check the connector connection of the
fuser unit and reconnect it.
2 Fuser unit failure Replace the fuser unit.
3
Low voltage power supply PCB
failure
Replace the low voltage power supply PCB
ASSY.
4
Paper eject sensor PCB failure Replace the paper eject sensor PCB
ASSY.
5 Main PCB failure Replace the main PCB ASSY.
Print Unable 6E
Turn the power off and then back on again.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
- SERVICE MANUAL 1
- TRADEMARKS 2
- REGULATION 9
- WARNING 10
- CAUTION 10
- Radio Interference 11
- (For USA) 13
- (MFC only) 14
- Internal laser radiation 15
- SAFETY INFORMATION 16
- CHAPTER 1 21
- CHAPTER 1 SPECIFICATIONS 22
- 1. SPECIFICATIONS LIST 23
- <Computer requirements> 26
- 1.2 Network Connectivity 28
- 1.3 Service Information 29
- 1.4 Consumables 30
- 1.5 Paper 31
- 1.5.1 Paper handling 31
- 1.5.2 Media specifications 31
- 1.6 Unprintable Area 32
- 1.7 Telephone 32
- 1.9 Copy 33
- 1.10 Scanner 33
- 1.11 Unscannable Area 34
- 1.12 USB Direct Interface 34
- CHAPTER 2 35
- 1. INTRODUCTION 38
- 1.2 Initial Check 39
- 2.1 Cross-section Drawing 41
- ■ ADF part 42
- 2.2 Paper Feeding 43
- 2.3 Operation of each part 45
- 2.4 Block Diagram 46
- 2.5 Components 47
- 3. ERROR CODES 52
- 3.2 Error Messages 57
- 3.3 Communications Error Code 59
- Refer to: 60
- 3.4 Error Cause and Remedy 62
- ■ Error code 19 63
- ■ Error code 1A 64
- Error code 1B 64
- Error code 1C 64
- Error code 1D 64
- ■ Error code 1E 64
- Error code 35 68
- ■ Error code 36 68
- ■ Error code 37 68
- Error code 38 68
- Error code 39 68
- Error code 3A 69
- ■ Error code 3B 69
- ■ Error code 57 74
- ■ Error code 58 74
- ■ Error code 59 75
- ■ Error code 63 77
- ■ Error code 64 77
- Error code 65 77
- Error code 66 77
- ■ Error code 67 78
- ■ Error code 68 78
- Error code 69 78
- ■ Error code 6A 78
- ■ Error code 6B 78
- ■ Error code 6C 79
- ■ Error code 6D 79
- ■ Error code 6E 79
- ■ Error code 6F 80
- ■ Error code 70 80
- ■ Error code 71 81
- Error code 72 81
- ■ Error code 73 81
- Error code 74 81
- ■ Error code 75 82
- ■ Error code 76 82
- Error code 78 82
- ■ Error code 7A 82
- ■ Error code 7B 83
- Error code 7C 83
- ■ Error code 7D 83
- ■ Error code 7E 84
- ■ Error code 7F 84
- ■ Error code 80 84
- ■ Error code 81, 82 84
- ■ Error code 83 85
- ■ Error code 84 85
- ■ Error code 85 86
- Error code 86 86
- Error code 87 86
- ■ Error code 88 86
- ■ Error code 89 87
- ■ Error code 8A 87
- ■ Error code 8B 88
- Error code 8C 88
- ■ Error code 8D 88
- Error code 97 90
- Error code 98 90
- Error code 99 90
- ■ Error code 9A 90
- ■ Error code 9B 91
- ■ Error code 9C 91
- ■ Error code 9D to 9F, A0 92
- ■ Error code A1 92
- ■ Error code A2 93
- ■ Error code A3 93
- ■ Error code A4 94
- ■ Error code A5 94
- ■ Error code A6 94
- ■ Error code A7 94
- ■ Error code A8 95
- ■ Error code A9 95
- Error code AA, AB 95
- Error code AC 95
- ■ Error code AD 95
- ■ Error code AE 96
- ■ Error code AF 96
- ■ Error code B0 96
- ■ Error code B8 98
- ■ Error code B9 98
- ■ Error code BA 98
- ■ Error code BB 98
- ■ Error code BC 99
- ■ Error code BD 99
- ■ Error code BE, BF 99
- ■ Error code C0 99
- ■ Error code C1 to C6 100
- ■ Error code C7 100
- ■ Error code C8 100
- ■ Error code C9, CA to CF 101
- ■ Error code D1 101
- ■ Error code DE 102
- ■ Error code DD 102
- ■ Error code DF 103
- ■ Error code E0 103
- ■ Error code E1 103
- ■ Error code E2 104
- ■ Error code E3, E4 104
- ■ Error code E6 104
- ■ Error code E7 to E9, EA, EB 105
- ■ Error code EC 105
- ■ Error code ED 105
- ■ Error code EE 106
- ■ Error code EF 106
- ■ Error code F0 107
- ■ Error code F1 to F6, F8 107
- ■ Error code F9 107
- ■ Error code FA to FF 107
- 3.5 Paper Feeding Problems 108
- 3.5.2 No feeding 108
- 3.5.4 Double feeding 109
- 3.5.5 Paper jam 110
- Confidential 111
- 3.5.6 Dirt on paper 112
- 3.5.8 Wrinkles or creases 113
- 3.5.9 Curl in the paper 114
- 3.5.12 Paper size error 115
- 3.6.1 Image defect examples 116
- Fig. 2-11 118
- Fig. 2-12 118
- ■ Faulty registration 119
- ■ Poor fixing 120
- ■ Completely blank 120
- ■ Image distortion 121
- ■ All black 121
- ■ Vertical streaks 122
- ■ Black horizontal stripes 123
- ■ White vertical streaks 124
- ■ White horizontal streaks 124
- ■ Faint print 124
- ■ White spots 125
- ■ Black spots 125
- ■ Black band 126
- ■ Horizontal lines 126
- ■ Fogging 127
- 3.7 Software Setting Problems 128
- 3.7.1 Cannot print data 128
- 3.8 Network Problems 129
- 3.9 Document Feeding Problems 130
- 3.9.1 No feeding 130
- 3.9.2 Double feeding 130
- 3.9.3 Paper jam 131
- 3.9.4 Wrinkles 132
- 3.10.1 Image defect examples 133
- ■ Dark (Error code BB, etc) 134
- 3.11.3 Lamp malfunction 136
- 3.12.1 FAX can't send it 137
- 3.12.3 No bell ring 137
- 3.13 PCB Problems 139
- 3.13.1 Main PCB failure 139
- 3.13.2 Out of Memory 139
- 3.13.5 NCU ASSY failure 140
- 3.14 Other Problems 141
- CHAPTER 3 142
- CONTENTS 143
- 1. SAFETY PRECAUTIONS 145
- 2. PACKING 146
- 4. SCREW TORQUE LIST 148
- 5. LUBRICATION 150
- ■ Paper feeder part 151
- ■ Development part 152
- Fig. 3-6 153
- Fig. 3-7 153
- 7. HARNESS ROUTING 154
- 1 Paper edge sensor PCB ASSY 154
- Printer top side 154
- 3 Internal temperature sensor 156
- 4 New toner sensor PCB ASSY 157
- 6 Paper eject sensor PCB ASSY 159
- 7 Main motor 160
- 8 Laser unit 160
- 10 Fan motor 60 ASSY 161
- 13 Fuser unit 163
- 14 Speaker unit 164
- 15 NCU ASSY 164
- 16 NCU FG harness ASSY 165
- 17 Panel unit 165
- 18 Document scanner unit 166
- 19 ADF sensor 167
- 20 ADF motor 168
- 21 Hook switch PCB 169
- Main PCB ASSY 169
- Hook switch PCB 169
- Side cover L 169
- 9. DISASSEMBLY PROCEDURE 171
- Fig. 3-8 172
- 9.1 Paper Tray 173
- Fig. 3-10 174
- Fig. 3-11 175
- Fig. 3-12 175
- 9.2 Cord Hook 176
- 9.3 Back Cover 177
- 9.4 Outer Chute ASSY 178
- 9.5 Fuser Cover 179
- Fig. 3-17 180
- Fig. 3-18 181
- Fig. 3-19 182
- Fig. 3-20 183
- Fig. 3-21 184
- Fig. 3-22 185
- Fig. 3-23 185
- Fig. 3-24 186
- 9.9 Side Cover R 187
- ADF Unit 188
- Fig. 3-27 189
- Fig. 3-28 190
- Fig. 3-29 190
- Document Stopper 191
- ADF unit 192
- Document sub tray 192
- Gear Cover 194
- Separation Roller ASSY 195
- Separation Rubber Holder ASSY 196
- Taptite cup B M3x10 197
- Back side 197
- Document Feed Roller ASSY 198
- Document cover 199
- Ejection Roller ASSY 200
- Taptite cup S M3x6 SR 201
- Screw pan (S/P washer) M3x6 202
- ADF motor 202
- Fig. 3-43 203
- Fig. 3-44 204
- Fig. 3-45 205
- Fig. 3-46 206
- CN26CN5 CN4 207
- Fig. 3-48 208
- Fig. 3-49 209
- 9.13 Document Scanner Unit 210
- Panel PCB ASSY 212
- Rubber Key L/R 213
- Fig. 3-54 214
- Fig. 3-55 214
- Lock claw 215
- Pull arm guide 215
- Joint cover 215
- 9.16 NCU ASSY 216
- Fig. 3-58 217
- Fig. 3-59 218
- Connector 220
- (Speaker harness ASSY) 220
- (Speaker harness ASSY) 220
- (4) Remove the speaker unit 221
- Fig. 3-64 223
- 9.19 Fuser Unit 224
- Fig. 3-67 225
- Fig. 3-68 226
- Fig. 3-69 227
- Fig. 3-70 228
- Fig. 3-71 228
- Fig. 3-72 229
- 9.21 Fan Motor 60 ASSY 230
- Fig. 3-74 231
- Fig. 3-75 232
- 9.24 Filter 233
- 9.25 Laser Unit 234
- Fig. 3-78 235
- Fig. 3-79 235
- Fig. 3-80 236
- Fig. 3-81 237
- 9.28 Rubber Foot 238
- 9.29 Main PCB ASSY 239
- Fig. 3-84 240
- Fig. 3-85 241
- 9.31 Main Frame L ASSY 242
- Fig. 3-87 243
- Fig. 3-88 244
- Fig. 3-89 245
- Fig. 3-90 246
- Fig. 3-91 247
- Fig. 3-92 248
- Fig. 3-93 249
- Fig. 3-94 250
- 9.36 Fuser Gear 28/34 251
- CHAPTER 4 252
- 1.4 Setting the Serial Number 256
- Fig. 4-1 257
- Fig. 4-2 259
- SCANNER UNIT 262
- 4-10 Confidential 263
- CHAPTER 5 264
- CHAPTER 5 SERVICE FUNCTIONS 265
- 1. MAINTENANCE MODE 267
- ■ Black and white scanning 271
- ADF CHECK P.01 272
- Fig. 5-2 273
- ■ Worker switch 274
- WSWXX = 0 0 0 0 0 0 0 0 276
- Selector 1 Selector 2 276
- Fig. 5-3 277
- Fig. 5-4 278
- ■ MFC-7360/7360N 279
- (Only for handset models) 280
- Low Medium High 282
- 1,100 Hz 282
- High Medium Low 282
- ■ Location of sensors 283
- ■ Function setting 285
- ■ Detail description 286
- ■ Cover page sample 291
- ■ End page sample 291
- Fig. 5-12 292
- ■ Maintenance information 298
- FAN: 100% 299
- FAN: 50% 299
- FAN: OFF 299
- (Function code 88) 305
- 2. OTHER SERVICE FUNCTIONS 306
- 2.5 Drum Cleaning 309
- 2.6 Deep Sleep Function 310
- CHAPTER 6 311
- 1. CIRCUIT DIAGRAMS 313
- 2. WIRING DIAGRAM 322
- CHAPTER 7 323
- APPENDIX 1 326
- A 0 J 1 1 1 1 0 1 327
- APPENDIX 2 328
- APPENDIX 3 330
- App. 3-4 334
- Continue Anyway 334
- to proceed 334
- APPENDIX 4 336
- Fig. APP. 4-1 337
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