Misfeed At Duplex Transport Section - Konica Minolta bizhub C353 Service Manual

Field Service Ver. 4.0 Jun. 2008
15.3.10

Misfeed at duplex transport section

A. Detection timing
Type
• A sheet of paper does not unblock the duplex paper passage sensor/2 (PS34)
Detection of
• A sheet of paper does not unblock the duplex paper passage sensor/1 (PS33)
misfeed at duplex
transport section
• A sheet of paper does not block the duplex paper passage sensor/2 (PS34)
Detection of paper • The duplex paper passage sensor/1 (PS33) is blocked, or the duplex paper
left in duplex
transport section
B. Action
Switchback motor (M6)
Duplex transport motor (M7)
Duplex paper passage sensor/1 (PS33)
Duplex paper passage sensor/2 (PS34)
Step
2
1 Initial check items
2 PS33 I/O check, sensor check
3 PS34 I/O check, sensor check
4 M6 operation check
5 M7 operation check
6 Change PRCB
after a predetermined period of time has elapsed since the sheet blocks the
duplex paper passage sensor/1 (PS33).
after a predetermined period of time has elapsed since the sheet blocks PS33.
after a predetermined period of time has elapsed since the sheet unblocks
PS34.
passage sensor/2 (PS34) is unblocked when the main power switch is turned
ON, a door or cover is opened and closed, or a misfeed or malfunction is reset.
Relevant parts
Action
Description
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
—
PRCB CN4-7 (ON)
PRCB CN4-10 (ON)
PRCB CN40-10 to 13
PRCB CN4-1 to 4
—
15. Jam display
Location (Electri-
cal component)
—
D-4
D-4
D-19
D-3
—
477
2