Dell 2145cn Technical Information download pdf (Page 56)

Disassembly and Reassembly

3-9

3.3.4 SCAN Ass’y

1. Unplug the two harness from the Main BD,

Remove the one screw and Release the one

Ground harness.

2. Push down on the black wedge using a Flat-

head screwdriver, and push the scan assembly

arm back.

3. Pull the Scanner from the SET in the direction of

arrow

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 207 208

 1
6HUYLFH0DQXDO 1
Table of Contents 3
Continued 4
1. Precautions 7
1.2 Caution for safety 8
1.2.3 Handling Precautions 9
Precautions 10
1.3 ESD Precautions 11
2. Product spec and feature 12
2.1.2 Speciﬁcations 13
Product spec and feature 14
2.1.2.3 Interface 15
2.1.2.4 Scan 15
2.1.2.5 Copy 16
2.1.2.6 Fax 17
2.1.2.7 Paper Handling 19
2.1.2.8 CRU 20
2.1.2.9 FRU 21
■ Machine Life 22
2.1.2.11 Environment 23
2.1.2.12 Option 24
2.1.3 Competitor Model 25
2.2 System Overview 26
■ Engine Layout 27
: Simplex 28
: Duplex 28
2.2.1 Main parts of system 29
2) Transfer Roller 30
3) FCT (First Cassette Tray) 30
4) SCT (Second Cassette Tray) 30
5) MPT (Multi Purpose Tray) 31
6) Toner Cartridge 31
7) Fuser Unit 32
9) Main Drive Unit 33
10) DEVE Drive Unit 33
13) Main Controller PBA 34
14) Drive PBA 34
15) DEVE CRUM PBA 34
16) Reverse Ass’y 34
17) Scan Part 35
IP Block Diagram 36
18) FAX section 37
1) Modem Side 38
2) DAA Side 38
3) Speaker Driver 39
2.2.2 H/W Conﬁguration 40
2.2.2.1 Main Board 41
Chorus 3 Architecture 42
Memory Interface 42
I/O Interface 42
2.2.2.2 Power Flow 43
• Zero crossing photo triac 46
• 1 lamp (800W) Pulse control 46
■ Input/Output connector 47
3. Disassembly and Reassembly 48
3.3 Disassembly Procedure 52
3.3.2 Cover Front Ass’y 53
Disassembly and Reassembly 54
4. Done 55
3.3.4 SCAN Ass’y 56
3.3.5 DADF 57
3.3.6 Reverse Ass’y 58
3.3.7 COVER MIDDLE Ass’y 59
3.3.8 HVPS 60
3.3.9 Main Board 60
3.3.10 SMPS Board 61
3.3.11 Fuser Control Board 61
3.3.12 LSU 62
3.3.13 CRUM 63
3.3.14 Fuser Drive Ass’y 63
3.3.15 Pick up roller 64
4.1 Alignment and Adjustments 65
■ Clearing paper jams 67
■ Paper Path 68
Alignment and Troubleshooting 69
misfed paper 74
4.1.3.5 In the optional tray 76
4.1.4 System setup 77
4.1.4.2 Menu overview 78
4.1.4.3 Maintenance 79
■ PRINTING REPORTS 79
Printing a report 80
■ CLEARING MEMORY 84
■ CLEANING YOUR MACHINE 85
Cleaning the outside 85
Cleaning the inside 85
Cleaning the scan unit 86
■ MAINTAINING THE CARTRIDGE 87
Toner cartridge storage 87
Expected cartridge life 87
Redistributing toner 87
■ MAINTENANCE PARTS 92
Checking replaceables 93
Replacing the DADF rubber pad 93
4.1.4.5 F/W Upgrade 97
1) Using button 97
2) Using SWS 98
4.1.4.6 EDC Mode 99
■ Method to enter 99
■ EDC Menu 99
0. Cover Status 99
1. Sensor Status 100
2. Motor Test 100
3. Fan Test 100
4. Clutch/Sol 101
5. Fuser Ctrl 101
6. LSU Control 101
7. DEV Control 102
8. Reset Param 102
9. Print Test 102
4.1.4.7 Tech Mode 103
■ How to Enter Tech Mode 103
Never change settings 104
< Method > 105
4.1.5 Error Message 107
-genuine cartridge 111
4.2 Troubleshooting 112
Image quality problems 113
Digital Printer 114
7) Uneven Density 119
Digital 121
Digital Pri 121
11) Ghost 123
4.2.3 Paper feed problems 124
2) JAM 0 125
3) JAM 1 126
4) JAM 2 127
5) Reverse JAM 0 128
6) Rear Cover 129
7) Reverse JAM 1 130
8) Paper rolled in the fuser 131
4.2.4 Copy Problems 132
2) Scan Lock Error 133
3) Glass Broken 134
4.2.5 OPE Problems 135
4.2.6 Other Problems 136
Fuser error 137
2) No Power(1) 138
No Power(2) 139
3) LSU Error 140
View and Parts list 141
Thumbnail 1 142
Thumbnail 2 143
5.1 Main 144
Main Parts List 145
5.2 Cover Unit 147
Cover Unit Parts List 148
5.3 Front Cover 149
Front Cover Parts List 150
5.4 MP Tray 151
MP Tray Parts List 152
5.5 Middle Cover 153
Middle Cover Parts List 154
5.6 Reverse Unit 155
Reverse Unit Parts List 156
5.7 Top Cover 157
Top Cover Parts List 158
5.8 Reverse Frame 159
Reverse Frame Parts List 160
5.9 Reverse Drive 161
Reverse Drive Parts List 162
5.10 Frame 163
Frame Parts List 164
5.11 Feed Drive 165
Feed Drive Parts List 166
5.12 Fuser Unit 167
Fuser Unit Parts List 168
5.13 Fuser Drive 170
Fuser Drive Parts List 171
5.14 PTB 172
PTB Parts List 173
5.15 Scan Ass’y 175
Scan Ass’y Parts List 176
5.16 Hinge Unit 177
Hinge Unit Parts List 178
5.17 OPE 179
OPE 4in1 Parts List 180
5.18 Platen Ass’y 181
Platen Ass’y Parts List 182
5.19 DADF Ass’y 184
DADF Ass’y Parts List 185
5.20 Platen Cover DADF 186
Platen Cover DADF Parts List 187
5.21 DADF lower 188
DADF lower Parts List 189
5.22 DADF Motor 190
DADF Motor Parts List 191
5.23 Cassette 192
Cassette Parts List 193
5.24 SCF Unit 195
SCF Unit Parts List 196
5.25 SCF Cassette 198
SCF Cassette Parts List 199
6. System Diagram 200
6.2 Connection Diagram 201
System Diagram 202
7. Reference Information 205
Printer 206
Printer Language 207
Printer Language-Color 207
Reference Information 208

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Dell 2145cn Technical Information Page 56

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