2WA/2NJ/2RK
7-19
When scanning the first (front) side through DP
6 Replacing the DPCIS The DPCIS is faulty. Replace the DPCIS, and then
execute U091 and U411.
Detaching
and Reat-
taching the
DPCIS
7 Replacing the DP relay
PWB
The DP relay PWB is
faulty.
Replace the DP relay PWB.
8 Replacing the main PWB The main PWB is faulty. Replace the main PWB. Detaching
and Reat-
taching the
main PWB
Step Check description Assumed cause Measures Reference
1 Checking the original The originals were set
upside down.
Reset the original to correct
the front and back direction.
2 Checking the slit glass The slit glass is not prop-
erly attached.
Reattach the slit glass.
3 Executing U068 The starting position for
scanning an original on the
DP is incorrect.
Adjust U068 [DP Read]. Executing
U068
4 Checking the home posi-
tion sensor
The home position sensor
is not properly attached.
Reattach the home position
sensor.
5 Checking the FFC The FFC is not properly
connected, or it is faulty.
Reconnect the following FFC.
When the FFC terminals are
peeled off or deformed or the
FFC is broken, replace the
FFC. • CCD PWB - Engine
PWB
Wiring dia-
gram
6 Checking the scanner
drive belt
The scanner drive belt
comes off.
Reattach the scanner drive
belt.
7 Checking the scanner
drive gear
The scanner drive gear is
not properly attached.
Reattach the scanner drive
gear.
8 Replacing the ISU The CCD PWB is faulty. Replace the ISU. Detaching
and Reat-
taching the
ISU
9 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Detaching
and Reat-
taching the
engine
PWB
10 Replacing the main PWB The main PWB is faulty. Replace the main PWB. Detaching
and Reat-
taching the
main PWB
Step Check description Assumed cause Measures Reference
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