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4040
Light Image Service Check
FRU
1
Image Density
2
Toner
3
Toner Image
4
Paper
5
Transfer
Charging
Roller Con-
tact
6
Transfer
Charging
Roller
7
High-voltage
Power Sup-
ply
8
System
Board
2-34
Action
The Image density may not be adjusted cor-
rectly. Adjust the Image density by operating
the external device.
Low toner. Replace the EP cartridge.
Open the upper cover and remove the EP cartridge
while a print is being made. Open the drum protec-
tive shield of the EP cartridge and check the toner
image on the photosensitive drum. If the toner
Image was not transferred to the paper properly, go
to step 4. If the toner Image on the drum is faint, go
to step 7. Do not open the drum protective shield
for more than 10 seconds.
Check the print paper. Replace if necessary.
The transfer charging roller contact (7-2) of the
high-voltage power supply may not be making a
good connection with the contact of the transfer
charging roller shaft. If the contacts are dirty, clean
them. If the problem continues after cleaning, or
parts are deformed or damaged, replace them.
The transfer charging roller may be deformed
or has deteriorated. The transfer charging
roller is a supply item, replaced by the cus-
tomer.
The high-voltage power supply board could be
defective. Replace the high-voltage power
supply (Assembly 7).
The system board could be defective. (4-9)
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