Kyocera FS-C8520MFP - No Image Appears (Entirely White); No Image Appears (Entirely Black)

2MY/2MZ
1-4-38
(1) No image appears (entirely white).
(2) No image appears (entirely black).
Print example Causes Check procedures/corrective measures
Defective
transfer
bias output.
Defective connector cable
or poor contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity of the connector cable. If necessary,
replace the cable.
High voltage PWB and engine PWB (YC15)
High voltage PWB sub and engine PWB
(YC13)
Defective high voltage
PWB.
Replace the high voltage PWB.
Defective high voltage PWB
sub.
Replace the high voltage PWB sub.
Defective engine PWB. Replace the engine PWB (see page 1-5-32).
Defective
developer
bias output.
Defective connector cable
or poor contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity of the connector cable. If necessary,
replace the cable.
High voltage PWB and engine PWB (YC15)
Defective high voltage
PWB.
Replace the high voltage PWB.
Defective engine PWB. Replace the engine PWB (see page 1-5-32).
No LSU
laser is out-
put.
Defective laser scanner
unit.
Replace the laser scanner unit
(see page 1-5-20).
Defective main PWB. Replace the main PWB (see page 1-5-31).
Print example Causes Check procedures/corrective measures
No main
charging.
Defective connector cable
or poor contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
High voltage PWB and engine PWB (YC15)
Defective charger roller unit. Replace the charger roller unit
(see page 1-5-16).
Defective high voltage
PWB.
Replace the high voltage PWB.
Defective engine PWB. Replace the engine PWB (see page 1-5-32).
Exposure
lamp fails to
light.
Defective connector cable
or poor contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
LED PWB and main PWB (YC112)
CCD PWB and main PWB (YC113)
Defective CCD PWB. Replace the image scanner unit
(see page 1-5-21).
Defective main PWB. Replace the main PWB (see page 1-5-31).