2WA/2NJ/2RK
7-74
(5-11) Poor grayscale reproduction
(5-12) Blurred image
Step Check description Assumed cause Measures Reference
1 Adjusting the image Calibration or Grayscale
Adjustment is not exe-
cuted.
Execute [Calibration] and
[Tone Curve Adjustment]
from [Adjustment/Mainte-
nance] in the System Menu.
Step Check description Assumed cause Measures Reference
1 Executing Drum refresh The drum surface has con-
densation.
Execute Drum refresh.
2 Setting the cassette heater The image forming section
is affected by humidity.
[Cassette heater standard
model]Connect the cassette
heater and set U327 if neces-
sary.[Cassette heater
optional model]Install the
cassette heater and set U327
if necessary.
Installing
the cas-
sette
heater
3 LSU replacement The LSU glass is deterio-
rated.
Replace the LSU. Detaching
and Reat-
taching the
LSU
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