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41955801TH Rev.8
111 /
Oki Data CONFIDENTIAL
Table 5-1-1 Operator Alarm (3/6)
Message
Cause
Error Description
Solutions
Service Call
110: Error
~
116: Error
110: Envelope
Feeder
111: Duplex unit
112: 2nd Tray
113: 3rd Tray
114: 4th Tray
115: 5th Tray
116: Finisher
Service Call
120: Error
Service Call
121: Error
Service Call
122: Error
Service Call
123: Error
Service Call
124: Error
Service Call
125: Error
Turn power
OFF and wait
126: Dew
error
Service Call
130: Error
Service Call
131: Y Head
132: M Head
133: C Head
134: K Head
Service Call
140: Y ID
141: M ID
142: C ID
143: K ID
Service Call
150: Y
151: M
152: C
153: K
Service Call
154: Error
Service Call
155: Error
Option unit for different
model detected.
PU unit fan motor error.
High-voltage power
supply I/F error.
Low-voltage power
supply fan error.
Low-voltage power
supply temperature error.
Improper environment
humidity detected by
sensor.
Improper environment
temperature detected
by sensor.
Error detected at MT
home position.
Sensor dew error.
Temperature rise
detected at LED head.
Same unit not detected
upon power ON or
opening cover.
Error detected at
proper ID position.
When a fuse could not
be disconnected in the
ID unit.
When belt unit fuse
cannot be disconnected.
When fuser unit fuse
cannot be disconnected.
Is a proper option unit for the printer set?
1) Is fan in PU unit operating?
2) Error reoccurs after replacing fan motor.
Is cable between PU board andhigh-
voltage power LSI connected properly?
1) Is fan in low-voltage power supply unit
operating?
2) Error reoccurs after replacing fan motor.
1) Is error message displayed?
2) Does error reoccur?
1) Is error message displayed?
2) Does error reoccur?
1) Is error message displayed?
2) Does error reoccur?
Sensor dew error detected.
1) Is error message displayed?
2) Does error reoccur?
1) Is error message displayed?
2) Is LED head properly set?
3) Does error reoccur?
1) Is error message displayed?
2) Does error reoccur?
Is ID unit set properly?
Is belt unit set properly?
Is fuser unit set properly?
Yes
No
No
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Set proper option unit.
Check connections and turn power
ON. If error is not recovered, replace
the unit.
Replace fan motor.
Replace engine control board.
Replace engine control board.
Connect properly.
Replace high-voltage power supply.
Check improper connections for
high-voltage.
Replace fan motor.
Replace low-voltage power supply.
Replace low-voltage power supply.
Turn ON power again.
Replace humidity sensor.
Turn ON power again.
Replace humidity sensor.
Turn ON power again.
Replace MT.
Turn ON power after a while.
Leave alone for 30 min.
Turn power OFF. Leave for 30 min.,
then turn power ON. Replace LED
head.
Confirm that LED head is set properly.
Turn power ON again.
Replace LED head assembly.
Turn power ON again.
Replace drum assembly.
Check cable connections and replace
engine board.
Check cable connections and replace
engine board.
Check cable connections and replace
engine board.
Summary of Contents for C7500n
Page 14: ...41955801TH Rev 8 14 Oki Data CONFIDENTIAL 2 2 Parts layout Figure 2 1 A A B B A A B...
Page 15: ...41955801TH Rev 8 15 Oki Data CONFIDENTIAL Top Cover Assy Figure 2 2 For 1200dpi For 600dpi...
Page 16: ...41955801TH Rev 8 16 Oki Data CONFIDENTIAL Printer Unit 1 2 Figure 2 3 A A...
Page 17: ...41955801TH Rev 8 17 Oki Data CONFIDENTIAL Printer Unit 2 2 Figure 2 4...
Page 18: ...41955801TH Rev 8 18 Oki Data CONFIDENTIAL Cassette Guide Assy L R Figure 2 5 A B B A C C C C...
Page 19: ...41955801TH Rev 8 19 Oki Data CONFIDENTIAL Duplex Unit A B D C A B C D E E F G G F Figure 2 6...
Page 84: ...41955801TH Rev 8 84 Oki Data CONFIDENTIAL Pattern 5 Pattern 6 Pattern 7...
Page 177: ...41955801TL Rev 8 4 Oki Data CONFIDENTIAL 49 35 50 44 51 50 43 46 47 48 36 Main Assembly 3 3...
Page 191: ...41955801TL Rev 8 10 10 Oki Data CONFIDENTIAL 2nd 3rd Tray 1 2 3 4 8 5 6 7...