Kyocera Ecosys FS-6970DN, Service Manual

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2J5
1-4-10
(2) All-black printout.
Print example Causes Check procedures/corrective measures
No main
charging. Defective main charger
unit. Replace the main charger unit (See page P.1-5-13).
Poor contact of engine
PWB’s main charger out-
put terminal and main
charger unit’s contact
(spring). Check the installation of the drum (main charger) unit (Refer to
figure 1-4-5 below and P.1-5-12).
Figure 1-4-5
Poor contact of engine
PWB’s main charger out-
put terminal and printer’s
contact (spring). Check the installation position of the engine PWB.
(See page P.1-5-23 and P.1-4-9 refer to figure 1-4-3)
Defective engine PWB. Replace the engine PWB (See page P.1-5-23).
Main charger
output terminal
Contact
(spring)
Contact (spring)
Main
charger
unit
Connect-L PWB
connector (YC3) Drum PWB
connector (YC1)
Drum unit
Drum unit
Drum
grounding
terminal
A
A
B
B
C
C
Printer left side