Misfeed At Duplex Paper Transport Section - Konica Minolta bizhub C25 Service Manual

Field Service Ver. 1.1 May 2011
16.3.8

Misfeed at duplex paper transport section

A. Detection timing
Type
Detection of • The duplex conveyance sensor (PS9) is not blocked even after the lapse of a
misfeed at duplex
paper transport • The duplex conveyance sensor (PS9) is not unblocked even after the lapse of a
section
Detection of paper • The duplex conveyance sensor (PS9) is unblocked when the power switch is
left at duplex paper
transport section
B. Action
Exit sensor (PS8)
Duplex conveyance sensor (PS9)
Duplex conveyance roller clutch (CL13)
Step
1 Initial check items
2 Check the connector between M2-PRCB
PJ11 for proper connection and correct as
necessary.
3 Check the M2 connector for proper drive
coupling and correct as necessary.
4 Check the connector between PS8-PRCB
PJ15 for proper connection and correct as
necessary.
5 Check the connector between PS9-PRCB
PJ14 for proper connection and correct as
necessary.
6 Check the connector between CL13-relay
CN20-PRCB PJ14 for proper connection
and correct as necessary.
7 PS8 sensor check
8 PS9 sensor check
9 CL13 operation check
10 M2 operation check
11 Change PRCB.
given period of time after the paper has unblocked PS9.
given period of time after the paper has blocked the exit sensor (PS8).
turned ON, a door or cover is opened and closed, or a misfeed or malfunction is
reset.
Relevant Electrical Parts
Action
Description
Printer control board (PRCB)
Main motor (M2)
WIRING DIAGRAM
Control Signal
-
-
-
-
-
-
PRCB PJ15-9 (ON)
PRCB PJ14-3 (ON)
PRCB PJ14-5 (REM)
PRCB PJ11-10 to 13
-
16. JAM DISPLAY
Location
(Electrical Com-
ponent)
-
-
-
-
-
-
H-8
F-2
F-2
B-8
-
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