7. Jam Display Field Service Ver. 1.0 Aug. 2005
28
PC-402
Troubleshooting
7.3.2 LCT Paper Take-Up section/LCT Vertical Transport Section
A. Detection timing
B. Action
Type Description
LCT Paper Take-Up section/
Vertical transport section
misfeed detection
The leading edge of the paper does not block the Paper Feed Sensor
(PC1-LCT) or the LCT Vertical Transport Sensor (PC2-LCT) even after
the set period of time has elapsed after the Paper Feed Motor (M1-LCT)
is energized.
The Vertical Conveyance Sensor (PC2) is not blocked even after the
lapse of a given period of time after the LCT Vertical Transport Sensor
(PC2-LCT) has been blocked by a paper.
The Paper Feed Sensor (PC1-LCT) is not unblocked even after the
lapse of a given period of time after PC1-LCT has been blocked by a
paper.
LCT detection of paper
remaining
The LCT Vertical Transport Sensor (PC2-LCT) is blocked when the Main
Power Switch is set to ON, a door or cover is opened and closed, or a
misfeed or malfunction is reset.
The Paper Feed Sensor (PC1-LCT) is blocked when the Main Power
Switch is set to ON, a door or cover is opened and closed, or a misfeed
or malfunction is reset.
Relevant electrical parts
Paper Feed Sensor (PC1-LCT)
Vertical Conveyance Sensor (PC2-LCT)
Vertical Conveyance Sensor (PC2)
Paper Feed Motor (M1-LCT)
Main Control Board (PWB-C1 LCT)
Step Action
WIRING DIAGRAM
Control signal
Location (Electrical
components)
1 Initial check items - -
2 PC1-LCT sensor check PWB-C1 LCT PJ5C1 LCT-2 (ON) PC-402 C-8
3 PC2-LCT sensor check PWB-C1 LCT PJ5C1 LCT-5 (ON) PC-402 C-7
4 PC2 sensor check PWB-A PJ22A-9 (ON) D-7
5 M1-LCT operation check PWB-C1 LCT PJ6C1 LCT-1 to 4 PC-402 C-8
6 PWB-C1 LCT replacement - -
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