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