All-Black Printout - Kyocera FS-3040MFP Service Manual

(2) All-black printout.

Print example
No main
charging.
Causes
Defective main charger unit.
Poor contact of engine PWB's
main charger output terminal
and machine's contact
(spring).
Poor contact of machine's
main charger output terminal
and main charger unit's con-
tact (spring).
Drum PWB
connector (YC1)
Main charger
unit
Contact
(spring)
Contact
(spring)
Drum unit
Defective engine PWB.
1-4-16
Check procedures/corrective measures
Replace the main charger unit (See page 1-
5-26).
Check the installation position of the engine
PWB.
See page 1-4-15, refer to figure 1-4-5.
Check the installation of the drum (main
charger) unit.
Refer to figure 1-4-7 below.
A
A
B
C
Drum unit
Figure 1-4-7
Replace the engine PWB (See page 1-5-30).
2LW/2LX
Machine
Connect-L PWB
left side
connector (YC3)
Main
charger
output
terminal
B
Drum
grounding
C
terminal