Kyocera TASKalfa 7002i Service Manual page 884

Step Check description
7 Checking the ISU
8 Replacing the ISU
9 Replacing the engine PWB The engine PWB is faulty.
10 Replacing the main PWB
(2-15) Color shift
When scanning the second (back) side through the DP
Step Check description
1 Measures for the same
image failure when scan-
ning the first (front) side
through the DP
2 Checking the DPCIS roller
3 Checking the DP convey-
ing roller 2/3 (before and
after scanning)
4 Checking the DPCIS
When scanning the first (front) side through DP
Step Check description
1 Checking the original
2 Checking the original
Assumed cause
The ISU is attached
improperly.
The CCD PWB is faulty.
The main PWB is faulty.
Assumed cause
Assumed cause of the
same image failure when
scanning the first (front)
side through the DP
The originals are conveyed
without contacting the
DPCIS roller.
The DP conveying roller 2/
3 is dirty.
The originals are away
from the CIS glass.
Assumed cause
The originals out of specifi-
cation are used. (They are
thick, thin, or smooth.)
The leading edge of the
original is bent.
7-24
Measures
Reattach the ISU.
Replace the ISU.
Replace the engine PWB.
Replace the main PWB.
Measures
Perform the measures for the
same image failure when
scanning the first (front) side
through the DP.
Reattach the DPCIS roller.
Clean the DP conveying
roller 2/3 and the bushings.
Reattach the DPCIS.
Measures
Ask a user to use the speci-
fied paper.
Stretch the bending or the
paper creases of the original.
2WA/2NJ/2RK
Reference
Detaching
and Reat-
taching the
ISU
Detaching
and Reat-
taching the
ISU
Detaching
and Reat-
taching the
engine
PWB
Detaching
and Reat-
taching the
main PWB
Reference
Detaching
and Reat-
taching the
DPCIS
Reference