Specifications

No C16
CASE 2 No
TROUBLE POSITION
CAUSE
Cabinet (operation unit) open/close detection switch actuator does not operate while the cabinet is
opened/closed.
1) Cabinet (operation unit) open/close trouble
REMEDY (Check)
1) Cabinet (Operation unit)
(Remedy)
1) Cabinet (operation unit) replacement
(After work)
NOTE
SELF DIAG CODE MESSAGE CH
No C17
PHENOMENON DISPLAY CODE MAIN CODE CH SUB CODE
LAMP "CH" blink
TITLE Developer cartridge detection trouble
DETAIL 1) Toner density sensor malfunction
2) Toner density sensor signal recognition error
SECTION Developer cartridge
ITEM
TYPE (MODE) User YES Warning YES
Service YES Trouble YES
Other Other
OPERATION MODE All modes Machine operation when the
message is displayed
Stop
NOTE
BASIC CAUSE 1 Toner density sensor signal level recognition error
CASE 1 No
TROUBLE POSITION
CAUSE
Toner density sensor signal recognition error
1) Toner density sensor trouble
2) Toner density sensor signal input circuit trouble
REMEDY (Check)
1) Toner density sensor
2) Toner density sensor signal input circuit
(Remedy)
1) Toner density sensor replacement
2) PCU PWB Replacement
(After work)
1) When the MCU PWB is replaced, perform simulations to input various set values and
adjustment values.
NOTE
SELF DIAG CODE MESSAGE E1
No C18
PHENOMENON DISPLAY CODE MAIN CODE P SUB CODE
LAMP "P" blink
TITLE Paper misfeed
DETAIL 1) Paper entry detection (PIN) malfunction
2) Paper entry detector (PIN) signal recognition error
3) Paper feed roller abnormal rotation
SECTION Fusing, paper exit
ITEM
TYPE (MODE) User YES Warning YES
Service YES Trouble YES
Other Other
OPERATION MODE All modes Machine operation when the
message is displayed
Stop
NOTE
BASIC CAUSE 1 1) Paper entry detector (PIN) signal recognition error
2) Paper feed roller does not feed paper.
FO-3800M
10 – 15