2PR
1-4-29
(1) No image appears (entirely white).
Print example Causes Check procedures/corrective measures
No sec-
ondary
transfer
charging.
Defective harness
between high voltage
PWB 2 and engine PWB
(YC610), or improper con-
nector insertion.
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
Defective high voltage
PWB 2.
Replace the high voltage PWB 2 (See page 1-5-41).
Defective engine PWB. Replace the engine PWB (See page 1-5-28).
No pri-
mary
transfer
charging.
Defective harness
between high voltage
PWB 1 and engine PWB
(YC600), or improper con-
nector insertion.
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
Defective high voltage
PWB 1.
Replace the high voltage PWB 1 (See page 1-5-34).
Defective engine PWB. Replace the engine PWB (See page 1-5-28).
No laser
beam
output.
Defective laser scanner
unit.
Replace the laser scanner unit (See page 1-5-42).
Defective engine PWB. Replace the engine PWB (See page 1-5-28).
No
develop-
ing bias
output.
Defective harness
between high voltage
PWB and engine PWB
(YC600), or improper con-
nector insertion.
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
Defective high voltage
PWB 1.
Replace the high voltage PWB 1 (See page 1-5-34).
Defective engine PWB. Replace the engine PWB (See page 1-5-28).
Defective driving system of develop-
ing unit.
Replace the developing unit (See page 1-5-12).
Image
synchro-
nization
signal
failure.
Defective harness
between engine PWB
(YC31) and main PWB
(YC6), or improper con-
nector insertion.
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
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