2WA/2NJ/2RK
7-16
When scanning the first (front) side through DP
(2-9) Vertical white streaks or band
When scanning the second (back) side through the DP
Step Check description Assumed cause Measures Reference
1 Executing U071 The timing of scanning the
original leading edge at the
document processor is not
properly set.
Adjust U071 [Front Head]. Executing
U071
2 Executing U411 The starting position for
scanning an original on the
DP is incorrect.
Execute U411 [DP Auto Adj]. Executing
U411
3 Executing U411 The starting position for
scanning an original on the
DP is incorrect.
Execute U411 [DP FU(Chart
B)].
Executing
U411
4 Checking the DP convey-
ing roller 1-3
DP conveying roller 1-3 or
the bushings are dirty.
Clean the DP conveying
roller 1-3 and the bushings.
5 Checking the DP convey-
ing roller 1-3
The DP conveying roller 1-
3 is worn down.
Replace the DP conveying
roller 1-3.
6 Applying the grease The DP conveying motor
rotates irregularly and the
excessive load is applied
to the DP drive gear.
Apply the grease to the DP
drive gears.
7 Checking the DP convey-
ing motor
The DP conveying motor
rotates irregularly due to
the fault.
Reattach the DP conveying
motor and reconnect the con-
nector. Replace it if it is not
fixed.
Step Check description Assumed cause Measures Reference
1 Checking the DPCIS roller The DPCIS roller is dirty Clean the DPCIS roller
2 Checking the CIS glass The CIS glass is dirty. Clean the CIS glass and the
DP conveying guide.
3 Executing U091 U091 (Set white line cor-
rection) is not executed.
Execute U091. Executing
U091
4 Checking the DP relay
PWB
The DP relay PWB is not
properly attached.
Reattach the DP relay PWB.
5 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
6 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
7 Checking the DPSHD
PWB
The DPCIS is not properly
connected to the DPSHD
PWB.
Reconnect the DPCIS to the
DPSHD PWB.
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