Specifications

No C6
BASIC CAUSE 1 1) CCD level output recognition error during shading correction
2) Abnormally low or high CCD output level
CASE 1 No
TROUBLE POSITION
CAUSE
Scanner (reading) optical system does not transmit images (light) normally
1) Scanner (reading) optical system dirt
2) Scanner (reading) optical parts installing position shift
REMEDY (Check)
1) Scanner (reading) optical system dirt
2) Scanner (reading) optical parts installing position adjustment
(CCD unit, lens, mirror, copy lamp, copy lamp light quantity sensor, shading correction sheet)
(Remedy)
1) Scanner (reading) optical system cleaning
2) Scanner (reading) optical parts installing position adjustment
(CCD unit, lens, mirror, copy lamp, copy lamp light quantity sensor, shading correction sheet)
(After work)
1) Copy density adjustment
NOTE
CASE 2 No
TROUBLE POSITION
CAUSE
CCD level output recognition error during shading correction
1) CCD unit trouble
2) MCU PWB image signal (CCD) input circuit trouble
REMEDY (Check)
1) CCD unit output
2) MCU PWB image signal (CCD) input circuit
(Remedy)
1) CCD unit replacement
2) MCU PWB replacement
(After work)
1) When the MCU PWB is replaced, perform simulations to input various set values and
adjustment values.
NOTE
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 E7
No C7
PHENOMENON DISPLAY CODE MAIN CODE E7 SUB CODE 14
LAMP
TITLE ASIC (MCU PWB) trouble
DETAIL ASIC (MCU PWB) malfunction
SECTION MCU PWB
ITEM
TYPE (MODE) User Warning
Service YES Trouble YES
Other Other
OPERATION MODE All modes Machine operation when the
message is displayed
Stop
NOTE
FO-3800M
10 – 8