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Brother HL-5450DNT Service Manual Page 288
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Table of contents
TROUBLESHOOTING
BOOKMARKS
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Confidential
CHAPTER 6 WIRING DIAGRAM
This chapter provides the wiring di
agram for the connections of the PCBs.
CONTENTS
1.
WIRING DIA
GRAM
..................
................
.............
................
.............
................
...........
6-1
1
2
...
283
284
285
286
287
288
289
290
291
292
293
...
312
313
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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