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SCX-4720F
Service Manual
Page 190
Samsung SCX-4720F - Page 190
190 pages
Manual
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ELECTRONICS
©
Samsung Electronics Co.,Ltd. July 2004
Printed in Korea.
VERSION NO. : 1.00 CODE : JC-0127A
This
service
manual
is
also
provided
on
the
web,
the
ITSELF system
Samsung
Electronics Co.,
Ltd.
http://itself.sec.samsung.co.kr
189
Table of Contents
Main Page
Table of Contents
1
Precautions
2
Caution for Safety
3
Toxic Material
3
Electric Shock and Fire Safety Precautions
3
Handling Precautions
4
Disregarding this Warning May Cause Bodily Injury
5
Esd Precautions
6
Super Capacitor or Lithium Battery Precautions
6
Reference Information
7
Acronyms and Abbreviations
8
The Sample Pattern for the Test
9
A4 Iso 19752 Standard Pattern
12
Wireless Lan
13
Specifications
15
Print Specification
17
Scan Specification
18
Copy Specification
19
Fax Specification
21
Summary of Product
25
Rear View
26
System Layout
31
Toner Cartridge
34
Main Pba
35
Flash Memory
37
Sensor Input Circuit
38
Fuser Ac Power Control
42
Usb Host
45
Fax Section
46
Liu Pba
47
Transformer Circuit
48
On Hook State
49
Off Hook State
49
Disassembly and Reassembly
52
Rear Cover
53
Front Cover
55
Smps and Liu
68
Crum Board
71
Cover MID Front
72
Alignment and Adjustments
78
Printer Paper Path
79
Clearing Paper Jams
80
Clearing Document Jams
81
Adf Input Misfeed
81
Adf Exit Misfeed
82
Adf Roller Misfeed
82
Paper Setting
87
Copy Setup
87
Machine Setup
87
Tech Mode
89
Clear All Memory
90
Modem Speed
90
Error Rate
90
Dial Mode
90
Send Level
90
Data Setup
90
Flash Upgrade
91
Machine Test
92
Switch Test
92
Modem Test
92
Dram Test
92
Rom Test
92
Pattern Test
92
Shading Test
92
Protocol List
93
System Data
93
Engine Test Mode
94
Identify Sale Date
96
Consumables and Replacement Parts
97
Abnormal Image Printing and Defective Roller
98
Error Messages
99
Troubleshooting
102
Paper Rolled in the Fuser
104
Paper Rolled on the Opc Drum
105
Defective Adf
105
Cover Open
108
Defective Motor Operation
109
Wrong Print Position
110
Horizontal Black Bands
111
Light Image
112
Uneven Density
113
No Dial Tone
117
Defective Mf Dial
117
Defective Fax Forward
118
Defective Automatic Receiving
120
Copy Problems
121
White Copy
121
Black Copy
121
Defective Image Quality
122
Pc Scanning Problems
123
Service for the Life of Toner Cartridge
124
Toner Low
125
Toner Empty
125
Abnormal Printing
131
Spool Error
132
General Problems
133
Windows Problems
134
Syncthru Installation Problems
135
Exploded Views and Parts List
136
Main Assembly
137
Adf Assembly
141
Scanner Assembly
147
Middle Cover Assembly
149
Frame Assembly
150
Block Diagram
166
Connection Diagram
167
Schematic Diagram
168
Liu Board
184
Ope Board
185
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