
No C8
CASE 3 No
TROUBLE POSITION
CAUSE
Copy lamp light quantity abnormality
1) Copy lamp trouble
2) Copy lamp control PWB trouble
3) Copy lamp light quantity adjustment trouble
REMEDY (Check)
1) Copy lamp
2) Copy lamp control PWB
3) Copy lamp light quantity level
(Remedy)
1) Copy lamp replacement
2) Copy lamp control PWB replacement
3) Copy lamp light quantity level adjustment
(After work)
1) Copy density adjustment
NOTE
SELF DIAG CODE MESSAGE H2
No C9
PHENOMENON DISPLAY CODE MAIN CODE H2 SUB CODE 00
LAMP
TITLE Fusing temperature sensor (thermistor) trouble
DETAIL 1) Fusing temperature sensor (thermistor) output level abnormality
2) Fusing temperature sensor (thermistor) output level recognition error
SECTION Fusing
ITEM
TYPE (MODE) User Warning
Service YES Trouble YES
Other Other
OPERATION MODE All modes Machine operation when the
message is displayed
Stop
NOTE
BASIC CAUSE 1 Fusing temperature sensor (thermistor) output level recognition error
CASE 1 No
TROUBLE POSITION
CAUSE
Fusing temperature sensor (thermistor) signal recognition error
1) Fusing temperature sensor (thermistor) trouble
2) MCU PWB fusing temperature sensor (thermistor) input circuit trouble
REMEDY (Check)
1) Fusing temperature sensor (thermistor)
2) MCU PWB fusing temperature sensor (thermistor) input circuit
(Remedy)
1) Fusing temperature sensor (thermistor) replacement
2) MCU PWB replacement
3) Reset the trouble with SIM 14.
(After work)
1) When the MCU PWB is replaced, perform simulations to input various set values and
adjustment values.
NOTE
SELF DIAG CODE MESSAGE H3
No C10
PHENOMENON DISPLAY CODE MAIN CODE H3 SUB CODE 00
LAMP
TITLE Fusing high temperature trouble
DETAIL 1) Fusing temperature sensor (thermistor) output level abnormality
2) Fusing temperature sensor (thermistor) output level recognition error
SECTION
ITEM
TYPE (MODE) User Warning
Service YES Trouble YES
Other Other
OPERATION MODE Machine operation when the
message is displayed
Stop
NOTE
FO-3800M
10 – 10
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