Kyocera TASKalfa 7002i Service Manual page 873

Step Check description
7 Replacing the engine PWB The engine PWB is faulty.
(2-7) Vertical black / color streaks or band
When scanning the second (back) side through the DP
Step Check description
1 Executing U072
2 Executing U411
3 Executing U411
4 Cleaning the CIS glass
5 Cleaning the DP convey-
ing guide
6 Checking the DP registra-
tion pulley
7 Checking the DPCIS roller
8 Executing U091
9 Checking the DP relay
PWB
10 Checking the SATA cable
11 Replacing the SATA cable
12 Checking the DPSHD
PWB
Assumed cause
Assumed cause
The leading edge timing is
improperly adjusted.
(Streaks or bands appear
on the image outside the
original.)
The leading edge timing is
improperly adjusted.
(Streaks or bands appear
on the image outside the
original.)
The leading edge timing is
improperly adjusted.
(Streaks or bands appear
on the image outside the
original.)
The CIS glass is dirty.
The DP conveying guide is
dirty.
The DP registration pulley
is dirty.
The DPCIS roller is dirty
U091 (Set white line cor-
rection) is not executed.
The DP relay PWB is not
properly attached.
The connector is not prop-
erly connected.
The SATA cable is
deformed or broken.
The DPCIS is not properly
connected to the DPSHD
PWB.
7-13
Measures
Replace the engine PWB.
Measures
Adjust U072 [CIS].
Execute U411 [DP Auto Adj].
Execute U411 [DP
FD(ChartA)].
Clean the CIS glass and the
DP conveying guide.
Clean the DP conveying
guide.
Clean the DP registration pul-
ley.
Clean the DPCIS roller
Execute U091.
Reattach the DP relay PWB.
Reinsert the connectors of
the SATA cable between the
DPSHD PWB and the DP
relay PWB.
Replace the SATA cable
between the DPSHD PWB
and the DP relay PWB.
Reconnect the DPCIS to the
DPSHD PWB.
2WA/2NJ/2RK
Reference
Detaching
and Reat-
taching the
engine
PWB
Reference
Executing
U072
Executing
U411
Executing
U411
Executing
U091
Wiring dia-
gram
Wiring dia-
gram