2M2/2M3
1-4-9
(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 within the connector cable. If none,
replace the cable.
High voltage PWB (YC1) and main PWB
(YC13)
Defective high voltage
PWB.
Replace the high voltage PWB
(see page 1-5-7).
Defective main PWB. Replace the main PWB (see page 1-5-7).
Defective
developer
bias output.
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 (YC1) and main PWB
(YC13)
Defective high voltage PWB
1.
Replace the high voltage PWB 1
(see page 1-5-7).
Defective main PWB. Replace the main PWB (see page 1-5-7).
No LSU
laser is out-
put.
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.
APC PWB (YC1) and main PWB (YC5)
Defective laser scanner
unit.
Replace the laser scanner unit
(see page 1-5-12).
Defective main PWB. Replace the main PWB (see page 1-5-7).
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 (YC1) and main PWB
(YC13)
Defective charger roller. Replace the drum unit
(see page 2-4-11).
Defective high voltage PWB Replace the high voltage PWB
(see page 1-5-7).
Defective main PWB. Replace the main PWB (see page 1-5-7).
Defective
laser scan-
ner unit.
Defective laser scanner
unit.
Replace the laser scanner unit
(see page 1-5-12).