2PR
1-4-31
(5) Image is too light.
(6) The background is colored.
Print example Causes Check procedures/corrective measures
Defec-
tive
develop-
ing bias
output.
Defective developing unit. Replace the developing unit for the color that causes an error
(See page 1-5-12).
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).
Dirty drum. Perform the drum surface refreshing (See page 1-3-10).
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).
Defective color calibration. Perform the color calibration (Refer to operation guide).
Insufficient toner. If the display shows the message requesting toner replenish-
ment, replace the container.
Insufficient agitation of toner con-
tainer.
Shake the toner container vertically approximately 10 times.
Paper damp. Check the paper storage conditions, replace the paper.
Print example Causes Check procedures/corrective measures
Defective color calibration. Perform the color calibration (Refer to operation guide).
Defec-
tive
develop-
ing bias
output.
Defective developing unit. Check the four colors of image by using the test page of ser-
vice mode. If the defect appears on a particular color, replace
the developing unit for that color (See page 1-5-12).
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).
Defec-
tive drum
surface
charging.
Defective drum unit. Replace the drum unit (See page 1-5-14).
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).
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