Misfeed At Duplex Transport Section - Konica Minolta Magicolor 8650 Service Manual

13. Jam display
13.3.10

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
1 Initial check items
2 PS33 I/O check
3 PS34 I/O check
4 M6 operation check
5 M7 operation check
6 Change PRCB
284
Confidential – for internal use only, do not distribute
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 power switch is turned ON, a
door or cover is opened and closed, or a misfeed or malfunction is reset.
Relevant parts
Action
Field Service Ver. 2.0 Nov. 2007
Description
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
—
PRCB CN4PRCB-7 (ON)
PRCB CN4PRCB-10 (ON)
PRCB CN40PRCB-10 to 13
PRCB CN4PRCB-1 to 4
—
Location (Electri-
cal component)
—
D-4
D-4
D-18
D-3
—