Kyocera TASKalfa 8002i

2WA/2NJ/2RK
7-68
(5-5) Horizontal streaks or band (white/black)
Step Check description Assumed cause Measures Reference
1 Executing U140 U140 [AC Calib] is not exe-
cuted.
Enter U140 [AC Calib] and
[Calibration], and change the
setting of the faulty color from
[Off] to [On]. Then, select
[Execute] to execute it.(The
Sleeve AC values at U140
becomes lower than the ones
before executing the Calibra-
tion.)
Executing
U140
2 Checking the developer
unit
Both ends of the developer
roller are dirty and it
causes the developer bias
leakage.
Clean both ends of the devel-
oper roller and the developer
bias contact.
3 Executing Developer
refresh
The last image remains on
the developer roller sur-
face.
Execute the developer
refresh.
4 Developer unit replace-
ment
Both ends of the developer
roller and the developer
bias contact are deterio-
rated and it causes the
developer bias leakage.
Replace the developer unit. Detaching
and Reat-
taching the
developer
unit
5 Executing Drum refresh The drum surface is dirty. Execute Drum refresh.
6 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
7 Drum unit replacement There are some scratches
on the drum surface.
Replace the drum unit. Detaching
and Reat-
taching the
drum unit
8 Main charger roller unit
replacement
The main charger roller
surface is dirty or has
some scratches.
When the image failures
appear in the main charger
roller circumference interval,
replace the main charger
roller unit.
Detaching
and reat-
taching the
main char-
ger roller
unit
9 Checking the wire The bias voltage is irregu-
larly generated from the
high-voltage PWB due to
the contact failure.
Reinsert the connector on the
high-voltage PWB.
Wiring dia-
gram