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44473001TH Re
v
.1
263 /
Oki Data CONFIDENTIAL
8.
CONNECTION DIAGRAMS
So
l
de
ri
ng
s
i
de
C5
02
C5
5
7
R5
90
R5
89
R5
7
1
R5
7
0
C5
7
5
C5
72
C5
73
R5
7
4
R5
82
R60
4
R6
20
D5
18
RM5
19
R5
83
R6
1
0
R6
1
1
R60
5
R7
79
R5
73
R5
72
D5
02
D5
07
R5
48
C5
80
R6
1
2
R6
1
3
D5
16
D5
19
1
3
49
R7
54
R7
6
7
C69
9
R7
5
5
R7
68
R7
56
R7
6
9
R7
70
C7
0
1
C7
00
C7
00
R7
5
8
R7
5
9
R7
96
R7
7
1
C7
02
44
43
40
35
34
32
26
25
21
5
4
1
1
1
2
1
8
C69
1
C68
5
C63
1
C63
0
C6
46
R6
1
7
R6
1
8
C6
1
3
C6
1
2
R6
1
9
R6
1
6
C60
6
R60
8
R5
7
8
R5
77
C5
7
1
R63
3
C68
9
C68
4
RM5
18
RM5
1
1
RM5
16
R7
04
C7
32
C7
1
4
1
9
3
1
4
1
D5
17
C65
7
C6
59
C63
4
C6
21
C6
22
C68
6
R7
30
C69
8
R7
29
R7
2
8
R7
2
7
R7
2
6
C69
7
C69
6
C69
5
C6
94
R7
49
R7
48
R7
47
R7
46
R7
45
R7
99
R64
3
R6
42
RM5
2
0
OS
C5
0
1
RM5
2
1
C6
58
R60
7
C5
04
D5
15
C6
7
5
C6
56
C69
0
R6
49
C6
62
C6
48
C64
7
R7
33
C7
2
1
R7
93
R7
77
R7
78
C7
7
6
R7
5
3
C7
2
7
R64
1
R5
49
IC
506
D5
13
D5
06
D50
5
D5
03
D5
04
D50
5
R5
0
1
D5
06
D50
7
R5
09
R5
10
R5
13
R5
06
R5
07
R5
08
R5
02
C50
5
R5
15
R5
16
R5
14
R5
1
1
R5
12
FE
T5
0
1
C5
62
R5
53
R5
52
C5
58
C5
6
1
C56
0
C5
39
R54
1
C5
59
R5
5
1
R5
50
D5
0
1
R50
5
R5
2
4
BF
50
1
D5
03
R53
9
R54
3
C5
53
C5
52
R5
58
R5
57
C5
42
C5
36
R5
25
R5
23
D50
9
C5
06
R5
32
R53
3
C5
20
C5
23
C5
54
C5
55
R5
69
IC
50
3
D50
8
R5
03
R5
20
R5
19
R5
17
C50
8
R5
18
C5
09
D5
02
D5
1
1
R53
5
R5
42
C5
45
R5
55
R55
4
R5
62
C5
7
4
C5
66
C5
67
C5
63
R5
6
1
R5
59
R5
46
R5
63
IC
50
4
C5
2
4
C5
0
1
R7
86
C5
35
C5
4
1
C5
40
R53
6
C7
16
C5
17
C7
1
6
D5
10
R7
98
C5
85
C5
8
1
C5
82
C5
86
C5
8
7
TE
S
T5
15
TE
S
T5
18
TE
S
T5
1
7
TE
S
T5
16
RM5
1
7
IC
50
8
IC
50
7
TE
S
T5
1
4
TE
S
T5
13
TE
S
T5
1
1
TE
S
T5
10
TE
S
T5
09
TE
S
T5
08
TE
S
T5
0
7
TE
S
T5
06
TE
S
T5
05
TE
S
T5
04
TE
S
T5
03
TE
S
T5
02
TE
S
T5
0
1
TE
S
T5
12
RM5
12
R63
1
R63
0
R6
28
R63
5
R65
1
D50
8
D50
9
C6
92
C6
93
R80
1
C7
3
1
C68
7
R6
52
RM5
13
RM5
1
4
RM5
15
RM
502
RM
503
RM
504
RM
505
RM
50
7
RM
506
RM
508
RM
509
RM5
10
R5
9
1
R5
93
R5
94
R5
95
R5
96
R5
83
R5
64
R5
85
R5
86
C5
48
C5
3
1
C5
12
R5
27
R5
26
C5
14
C5
16
IC
50
1
IC
50
2
C7
1
1
C7
29
C7
33
R8
02
C5
15
R5
3
1
R53
0
R5
60
C5
32
C5
34
C5
13
R5
29
C5
1
1
C5
30
C5
28
C5
27
C5
38
C5
4
7
C5
43
C5
44
R54
7
C5
29
C5
33
C5
7
0
R5
40
C7
2
8
1
4
1
7
9
R5
67
Q5
12
Q5
14
R60
9
R7
85
R7
12
R7
32
R7
32
C63
3
C7
1
3
C7
05
F5
0
1
C7
04
C6
20
IC
5
1
0
IC
50
9
R62
2
R6
23
5
1
0
4
R5
80
R5
79
R5
87
R5
88
C5
29
C5
28
C5
27
C5
26
RM
50
1
R5
66
R5
37
R53
6
R5
32
C5
44
C5
23
C5
20
C5
2
1
L50
1
C5
19
R7
44
R7
43
R7
42
R7
4
1
IC
50
5
C5
49
R5
65
R5
64
C5
5
1
C5
50
C5
56
R60
1
R60
0
R5
99
R5
98
R5
97
C5
97
C5
96
C5
95
C5
94
C5
93
C6
1
4
C6
1
5
C7
20
C7
1
0
C7
09
IC
5
1
2
IC
5
1
3
R7
8
1
R7
83
R7
84
R7
82
R6
2
4
R7
2
5
R7
2
3
R7
22
R69
9
R6
77
R6
78
R69
8
R7
2
0
R7
18
R7
17
R7
15
R7
14
R69
0
R66
8
R66
4
R6
56
R65
5
R64
6
R7
95
C6
55
R68
6
R68
5
R68
4
R68
3
R7
09
R7
6
5
R7
64
R7
6
3
R7
5
2
R7
5
1
R7
32
R7
3
1
R7
6
2
R7
6
1
R7
60
R7
7
6
R7
7
5
R7
7
4
R7
73
R7
72
R7
08
R7
0
7
R7
06
R7
05
RM
622
RM
626
RM
625
RM
623
R69
1
R66
9
R6
70
R7
16
R7
92
R7
7
1
R7
5
8
R69
3
R69
2
R69
5
R6
7
4
R6
73
R7
19
R69
6
R6
7
5
R6
59
R6
7
6
R7
2
4
R7
00
R6
79
R66
0
R7
02
R68
0
R7
12
R7
1
0
R68
7
R66
6
R66
5
R7
1
1
R68
8
R66
7
R65
7
TE
S
T5
2
9
TE
S
T5
2
8
TE
S
T5
2
7
TE
S
T5
2
6
TE
S
T5
2
5
TE
S
T5
2
4
TE
S
T5
2
3
TE
S
T5
2
2
TE
S
T5
2
1
TE
S
T5
2
0
TE
S
T5
19
R60
3
C5
9
1
C5
90
C60
0
C5
99
C5
98
C60
7
C63
5
C63
6
C64
8
C64
7
C63
7
C63
8
C63
9
C64
0
C64
1
C6
42
C65
4
C65
3
C64
3
C6
28
C64
4
C64
5
C6
29
C6
52
R64
0
R64
4
C6
49
C66
3
C66
0
C6
7
6
C67
7
C6
78
C6
62
C66
4
C66
5
C68
8
C66
5
C66
6
C6
79
C68
0
C6
67
C66
8
C66
9
C68
1
C6
50
C65
1
BF
50
3
BF
50
5
BF
50
6
BF
50
7
BF
50
4
BF
50
8
C68
3
C6
82
C60
8
C60
9
C6
1
8
C6
23
C6
2
4
C6
26
R6
1
5
R6
1
4
C6
1
7
C60
1
C60
2
C6
03
C60
4
C60
5
C6
1
1
C5
92
C6
1
0
C5
89C
58
8
C6
1
9
C6
1
8
C63
8
C63
7
C6
27
R63
6
R63
9
C6
25
C66
1
R740
R739
R738
R737
R736
R735
R734
R806
R804
R803
262
264
Table of Contents
Table of Contents
4
1 Configuration
7
System Configuration
8
Structure of MFP
10
Offer of Options
11
Specifications
12
Printer Section Specifications
13
Scanner Section Specifications
14
Network Specifications
15
Copy Function
16
Fax Specification
22
Internet Fax
24
Report Print
25
Print from Usb Memory
26
Interface Specifications
30
Outline of USB Interface
30
USB Interface Connector and Cable
30
USB Interface Signal
30
USB Interface Specification
30
Network Interface Connector and Cable
31
Network Interface Signal
31
Network Interface Specification
31
Outline of Network Interface
31
Outline of Telephone Line Interface
32
Telephone Line Interface Connector and Cable
32
Telephone Line Interface Signal
32
Telephone Line Interface Specification (Only MC561/MC361)
32
USB Host Interface
32
2 Description of Operation
33
Electrophotographic Process Mechanism
34
Printing Process
38
Image Scanning Process
50
Fundamental Operations
51
Jam Detection
55
Power Supply
55
Mfp Installation
58
Precautions and Prohibition
59
MFP Unpacking Procedure
60
MFP Installation Instructions
61
Packed Units and Attachments
62
Assembly Procedure
63
MFP Main Body
63
Loading Documents on the Adf
69
Loading Documents on the Document Glass
69
Power Cable Connection
70
Installation of Optional Components
71
Second Tray Unit
71
Extension Memory Installation
74
16GB SD Memory Card (for MC561 Only)
75
Configuration
78
Network Information Print
80
Connection Procedures
81
Checking of User Paper
85
4 Replacement of Parts
86
Notes on Replacement of Parts
87
Maintenance Tools
88
Part Replacement Procedure
89
Belt Unit
89
Fuser Unit
90
Left Side Cover
90
Right Side Cover
91
CU/PU PCB and Low-Voltage Power Supply
92
Front Cover
94
Scanner Unit
96
Tray-Assy-Document / Cover-ADF-R-Assy
97
ADF-Unit
98
Sheet-Document / Paper-Weight-Assy / Spring-PW-ADF
99
Hinge-Assy-L / Hinge-Assy-R
100
ADF-Board (FX750)
101
Cover-ADF-F / Guide-Assy-Exit-Sub / ADF-Assy
101
Cover-Assy-Top-ADF / Guide-Assy / Roller / Motor / Clutch
103
Solenoid
103
Cable (ADF-Rev SNS)
104
Guide-A-Sub / Frame-Assy-Separator / Spring-Separator
104
Rubber-Friction
104
Cable (ADF-Reg SNS)
105
Frame-Assy-OP
105
Frame-OP-Panel / OPE Board (MC361)
106
Frame-OP-Panel / OPE Board (MC561)
106
Frame-OP-Panel / OPE Board (MC351)
107
LCD-Assy
107
Frame-Assy-FB
108
Face-Up Tray
110
Rear Cover
110
LED Assembly. and LED Assembly Springs
111
Image Drum Fan and ZHJ Board
111
Top Cover Assembly
112
Top Cover and LED Head Cable Assembly
112
MPT Assembly
113
Front Fan, Hopping Motor, Rear Fan, Image Drum Motor and Cover-Open Switch
114
High-Voltage Power Supply Board
115
Guide-Ejection Assembly, Fuser Connector Assembly and Color-Registration Assembly
116
Frame-MPT Assembly and Feeder Assembly
117
Side-L Assembly, Side-R Assembly and Base Assembly
118
Feed Rollers
119
Locations to Lubricate
120
Adf
121
Printer
128
Maintenance Menus
139
Maintenance Menu
140
Service Bit Menu
148
Maintenance Utility
149
Various Printing of the Printer Unit with Controller
151
Switch Pressing Function When Power Supply Is Turned on
152
Settings after Parts Replacement
153
Notes on CU/PU Board Replacement
153
About the Manual Setting of Density Correction
156
Regular Maintenance
157
Recommended Substitutes
158
Cleaning
159
Cleaning LED Lens Array
160
Cleaning the Paper Feed Roller
162
Cleaning the Paper Feed Rollers for MP Tray
163
Cleaning Rollers in the ADF
164
Cleaning the Document Glass
165
7 Troubleshooting Procedures
166
Precautions Prior to Repair
167
Items to be Checked Prior to Taking Action on Abnormal Images
167
Precautions When Taking Action on Abnormal Images
167
Preparations for Troubleshooting
167
Troubleshooting Method
168
LCD Messages List
168
Service Call List
206
Fax Error List
211
7.5.4 Preparing for Troubleshootin
213
Default Chapter
213
Preparing for Troubleshootin
213
LCD Display Trouble
214
LCD Displays Nothing
214
Display of OKI Logo
215
Error Message Display
215
Abnormal MFP Operation after Powered on
215
No Operation
215
Abnormal Sound
216
Abnormal Odor
217
Slow Starting Time
217
Document Jam
225
Paper Feed Jam (Error Code 391: 1St Tray)
227
Jam Occurs Immediately after the Paper Feed Is Started. (1St Tray)
227
Jam Occurs Immediately after the Power Is Turned On. (1St Tray)
227
Feed Jam (Error Code 380)
229
Jam Occurs Immediately after the Paper Feed Is Started
229
Jam Occurs Immediately after the Power Is Turned on
229
Paper Feed Jam (Error Code 390: Multipurpose Tray)
230
(Multipurpose Tray)
230
Jam Occurs Immediately after the Power Is Turned on
230
(Multipurpose Tray)
231
Jam Occurs Immediately after Paper Feed Is Started
231
Paper Running Jam (Error Code 381:)
232
Jam Occurs Immediately after a Paper Is Taken into Printer
232
Jam Occurs Immediately after the Power Is Turned on
232
Jam Occurs in the Middle of Paper Running Path
233
Jam Occurs Immediately after Paper Has Reached the Fuser
234
Paper Unloading Jam (Error Code 382)
234
Paper Unloading Jam Occurs Immediately after the Power Is Turned on
234
Paper Unloading Jam Occurs after a Paper Is Taken into Printer
235
Paper Unloading Jam Occurs in the Middle of Paper Running Path
236
Troubleshooting Procedures
236
Two-Sided Printing Jam (Error Code: 370, 371, 372, 373, 383)
236
Two-Sided Printing Jam Occurs During Taking in the Paper into Duplex Unit
236
Two-Sided Printing Jam Occurs Immediately after the Power Is Turned on
236
Paper Is Not Supplied from the Duplex Unit to the Regist Roller
237
Two-Sided Printing Jam Occurs During Transporting Paper Inside the Duplex Unit
237
Two-Sided Printing Jam Occurs in the Process of Reversing Paper
237
Paper Size Error (Error Code 400)
238
Jam Occurs When Paper End Is Located Near the IN1 Sensor
238
ID Unit Up/Down Error (Service Call 142)
238
Error Occurs During the up Movement of the ID Unit
238
Error Occurs During the down Movement of the ID Unit
239
Fuser Unit Error (Error 170 to 177)
239
Error Occurs Immediately after the Power Is Turned on
239
Error Occurs Approx. 1 Minute after the Power Is Turned on
240
Option Unit Cannot be Recognized
241
Option Try Unit Cannot be Recognized
241
Print Speed Is Slow. (Performance Is Low.)
241
Print Speed Decreases
241
Motor Fan Error (Error Code 122, 128)
241
The Low Voltage Power Supply Fan Does Not Rotate Immediately after the Power Is Turned on
241
All Fans of the Printer Do Not Rotate
241
LED Head Cannot be Recognized. (Error Code 131, 132, 133, 134)
242
Service Call 131 to 134 (LED HEAD Missing)
242
Toner Cartridge Cannot be Recognized. (Error Code 540, 541, 542, 543)
242
Error Caused by the Consumable Items
242
Error Caused by the Toner Sensor
242
Error Caused by the Defective Mechanism
243
Fuse Cut Error (Error Codes 153 to 155)
243
Fuse Cut Error
243
Humidity Sensor Error (Error Code 123)
244
Humidity Sensor Error
244
Connection Diagram
245
7.5.5 Image Problem Troubleshooting
246
Image Problem Troubleshooting
246
Color Is Faint and Fades Across Pages (See Fig. 7-2 A)
247
Color Is Faint and Fades
247
The White Area of Printed Pages Is Dirty (See Fig. 7-2 B)
248
The White Area of Printed Pages Is Dirty (Partially)
248
The White Area of Printed Pages Is Dirty (All Over)
249
Printed Pages Are Blank (See Fig. 7-2 C)
249
A Printed Pages Are Entirely Blank
249
Vertical Lines Are Produced in Printed
250
Fine Lines (Colored) (See Fig. 7-2 D)
250
Fine Lines (White) (See Fig. 7-2 F)
250
Color Misregistration Is Significant
251
The Message "Adjusting Color" Displayed at Power on Stays for a Short Time
251
Print Quality Problems Appear Periodically (See Fig. 7-2 E)
251
Print Quality Problems Appear Vertically and Periodically
251
Black Filled-In Printing
252
Printed Pages Are Filled-In Black Entirely
252
Color Jobs Are Printed in Monochrome, Not in Color
252
False Setting of the Limited-Color Printing Menu
252
Copy Image Abnormality Error Troubleshooting
253
Response after Flash Compulsive Initialization
253
Network Troubleshooting
255
Fuse Checking
256
8 Connection Diagrams
257
Check of Resistance Values
258
Layout of Parts
262
Firmware Revision Numbers
275
ROM Control Numbers
275
Checking and Indication of the Revision Number
276
Stamp of Maintenance Board Indication
276
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Oki MC351 Specifications
General
Brand
Oki
Model
MC351
Category
All in One Printer
Language
English
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