Misfeed At Duplex Transport Section (Ad) - Konica Minolta bizhub C250 Service Manual

Field Service Ver. 3.0 Aug. 2006
15.3.9 Misfeed at Duplex transport section (AD-503)
A. Detection Timing
Type
Detection of The Duplex Unit Transport Sensor 2 (PC2 DU) is not blocked even after the lapse
misfeed at Duplex of a given period of time after the paper has blocked the Duplex Unit Transport
Transport section Sensor 1 (PC1 DU).
The Duplex Unit Transport Sensor 1 (PC1 DU) is not unblocked even after the
lapse of a given period of time after it has been blocked by the paper.
The Duplex Unit Transport Sensor 2 (PC2 DU) is not unblocked even after the
lapse of a given period of time after it has been blocked by the paper.
Detection of paper Duplex Unit Transport Sensor 1 (PC1 DU) or Duplex Unit Transport Sensor 2
left in Duplex (PC2 DU) is blocked when the Main Power Switch is turned ON, a door or cover is
Transport Section opened and closed, or a misfeed or malfunction is reset.
B. Action
Duplex Unit Transport Sensor 1 (PC1 DU)
Duplex Unit Transport Sensor 2 (PC2 DU)
Duplex Unit Switchback Motor (M1 DU)
Duplex Unit Transport Motor (M2 DU)
Step
1 Initial check items
2 PC1 DU I/O check, Sensor check
3 PC2 DU I/O check, Sensor check
4 M1 DU operation check
5 M2 DU operation check
6 Change PWB-A DU
7 Change PWB-M
Relevant Electrical Parts
Action
Description
Duplex Control Board (PWB-A DU)
Mechanical Control Board (PWB-M)
WIRING DIAGRAM
Control Signal
—
—
—
PWB-A DU PJ4A DU-1 to 4
PWB-A DU PJ5A DU-1 to 4
—
—
15. Jam Display
Location (Electri-
cal Component)
—
Q-21
Q-21
R-22
R-22
—
—
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