Misfeed At Switch Back Unit/Duplex Unit Transport Section - Konica Minolta bizhub 250 Service Manual

18. Jam Display
18.3.5

Misfeed at Switch Back Unit/Duplex Unit transport section

A. Detection Timing
Type
Detection of misfeed at
Switch Back Unit/Duplex
Unit transport section
Detection of paper left in
Switch Back Unit/Duplex
Unit transport section
B. Action
Paper Exit Sensor (PC4)
Switch Back Unit Sensor (PC26)
Duplex Unit Upper Transport Sensor (PC24)
Step
1 Initial check items
2 PC4 I/O check
3 PC26 I/O check
4 PC24 I/O check
5 PC25 I/O check
6 Change PWB-A
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The Switch Back Unit Sensor (PC26) is not blocked even after the set
period of time has elapsed after the Paper Exit Sensor (PC4) has been
unblocked by the paper.
The Duplex Unit Upper Transport Sensor (PC24) is not blocked even after
the set period of time has elapsed after the Switch Back Unit Sensor
(PC26) is blocked by the paper.
The Switch Back Unit Sensor (PC26) is not blocked even after the set
period of time has elapsed after the Duplex Unit Upper Transport Sensor
(PC24) is blocked by the paper.
The Switch Back Unit Sensor (PC26) is blocked when the Main Power
Switch is set to ON, a door or cover is opened and closed, or a misfeed or
malfunction is reset.
The Duplex Unit Upper Transport Sensor (PC24) is blocked when the Main
Power Switch is set to ON, a door or cover is opened and closed, or a mis-
feed or malfunction is reset.
Relevant Electrical Parts
Mechanical Control Board (PWB-A)
Action
Field Service Ver. 1.0 Aug. 2005
Description
WIRING DIAGRAM
Control Signal
-
PWB-A PJ18A-11 (ON)
PWB-A PJ19A-9 (ON)
PWB-A PJ20A-5 (ON)
PWB-A PJ20A-8 (ON)
-
Location
(Electrical
Component)
-
M-12
M-5
M-16
M-16
-