7. Jam Display Field Service Ver. 1.0 Aug. 2005
14
MT-501
Troubleshooting
7.3.2 Transport Section Misfeed
A. Detection timing
B. Action
Type Description
Transport Section misfeed
detection
The Lower Transport Sensor (PC10-MK) is not blocked even after the
set period of time has elapsed after the Transport Sensor (PC5-FN) is
unblocked by the paper.
The Upper Transport Sensor (PC9-MK) is not blocked even after the set
period of time has elapsed after the Lower Transport Sensor (PC10-
MK) is blocked by the paper.
Detection of paper remaining
in the Transport Section
The Lower Transport Sensor (PC10-MK) is blocked when the Power
Switch is set to ON, a door or cover is opened and closed, or a misfeed
or malfunction is reset.
The Upper Transport Sensor (PC9-MK) is blocked when the Power
Switch is set to ON, a door or cover is opened and closed, or a misfeed
or malfunction is reset.
Relevant electrical parts
Transport Sensor (PC5-FN)
Lower Transport Sensor (PC10-MK)
Upper Transport Sensor (PC9-MK)
Main Control Board (PWB-A MK)
Step Action
WIRING DIAGRAM
Control signal
Location (Electrical
components)
1 Initial checks - -
2 PC5-FN sensor check PWB-MK CN102A MK-5 (ON) C-5
3 PC10-MK sensor check PWB-MK CN102A MK-8 (ON) C-5
4 PC9-MK sensor check PWB-MK CN101A MK-8 (ON) C-4
5 PWB-A MK replacement - -
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