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ML-3471ND
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188 pages
Manual
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Disassembly and
Reassembly
Samsung Electronics
Service Manual
3-13
6. If
necessary
,
pull
the
DIMM
Cover
in
the
direction
of
arrow
and
remove
it,
as
shown
below
.
Notice
:
Be
careful
not
to
damage
the
hooks
when
remove
the
Side
Cover
(Left,
Right).
DIMM Cov
er
51
53
Table of Contents
Main Page
Default Chapter
1
Laser Printer
1
Table of Contents
2
1 Precautions
6
Safety Warning
6
Caution for Safety
7
Handling Precautions
8
ESD Precautions
9
2 Product Spec and Feature
10
Product Specifications
10
Product Overview
10
Specifications
10
Paper Handling
12
Model Comparison Table
15
Accessory List
15
System Overview
16
System Construction
16
Mechanical Parts Specifications
21
Engine H/W Specifications
27
Main Board
28
Flash Rom
28
S/W Descriptions
37
Disassembly and Reassembly
40
3 General Precautions on Disassembly
40
Screws Used in the Printer
41
Front Cover
43
MP Tray Ass'y
44
Rear Cover
45
Fuser Ass'y
46
Top Cover
49
OPE Unit
50
Side Cover (Left, Right)
51
Shield Controller Ass'y
53
Drive Ass'y
54
Duplex Drive Ass'y
55
Shield SMPS Ass'y
56
Connection PCB
57
Fuser Drive Ass'y
58
Fan
59
Pick up Roller Ass'y
60
Duplex Guide Housing (with Feed Roller)
61
HVPS Housing
62
Cover MID Front
63
MPF Housing
63
Feed Roller Parts
64
Exit Roller
66
Pick up Gear Ass'y & Solenoids
66
Lsu
67
Terminal
67
Transfer Roller Parts
68
4 Alignment & Troubleshooting
69
Alignment and Adjustments
69
Sample Pattern
69
Control Panel
70
System Setup
71
Menu Overview
72
Consumables and Replacement Parts
75
LED Status Error Message
75
Error Message
76
Abnormal Image Printing and Defective Roller
78
How to Use DCU
79
Paper Jam
84
In the Paper Feed Area
85
Around the Toner Cartridge
86
In the Duplex Unit Area
88
Tips for Avoiding Paper Jams
89
Download & Reset F/W
90
Troubleshooting
91
Procedure of Checking the Symptoms
91
The Cause and Solution of Bad Image
92
The Cause and Solution of the Bad Discharge
108
The Cause and Solution of the Malfunction
117
Toner Cartridge Service
127
The Cause and Solutions of Bad Environment of the Software
132
5 Exploded Views & Parts List
136
Main
137
Cover Ass'y
139
Front Cover Ass'y
141
Rear Cover Ass'y
143
OPE Cover Ass'y
144
Frame
145
Frame Parts List
146
MP Ass'y
149
Main Drive Ass'y
151
Fuser Drive Ass'y
153
Duplex Unit (Optional)
154
Fuser Unit
156
Cassette Unit
159
6 System Diagram
161
Block Diagram
161
Connection Diagram
162
7 Reference Information
163
Troubleshooting Tools
163
Acronyms and Abbreviations
165
Selecting Printer Locations
166
LAN (Optional Function)
166
Sample Tests Patterns
167
Series Model Solution(ML-3470D and ML-3471ND)
168
Double Feed Erro
168
Jam0
169
Jam1
170
No Paper/Add Paper" Error on the Printer and Have Been Unable
171
To Clear It, Even When They Have Verified There Is Paper in the Printer
171
Open Cover Error
172
Low Toner
173
Over Heat Error
174
Low Heat Error
175
Fuser Door Open
176
A Noise Troubleshooting Tree
177
LSU Error
178
Scan Lock Error
179
Nothing Displayed on LCD
180
All Black Printing
181
Blank Copy
182
Images at 1 Copy
183
Glass Broken
184
Document Jam
185
Parts Life Cycle Maintenance Table
186
Toner Cartridge Criterion
186
Model Information
187
Model List
187
Understanding for Model Code
187
Understanding Material Code & Name
188
F/W Upgrade Method
188
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