Konica Minolta Bizhub-C31P, Service Manual, Page: 325 / 370

3. Jam display Field Service V er. 1.0 Apr. 200 8
12
Duplex Option
T
roubleshooting
3.4.2 Misfeed at duplex option media transport section
A. Detection timing
B. Action
Type Description
Detection of mis-
feed at duplex
option media trans-
port section
The sensor on the AD control board (ADCB) is not blocked even after the lapse of
a given period of time after it has been unblocked.
The media does not unblock the registration sensor (PS4) even after the lapse of
a given period of time after the sensor on the AD control board (ADCB) has been
unblocked.
Detection of media
left at duplex option
media transport
section The sensor on the AD control board (ADCB) is unblocked when the main power
switch is turned ON, a door or cover is opened and closed, or a misfeed or mal-
function is reset.
Relevant Electrical Parts
Transport motor (M1)
Reverse motor (M2) AD control board (ADCB)
Print control board (PRCB)
Step Action
WIRING DIAGRAM
Control signal
Location
(electrical com-
ponent)
1 Initial check items
⎯ ⎯
2 Sensor check on the ADCB ADCB PJ1-12 D-3 to 4
3 M1 operation check ADCB PJ2-1 to 4 C-4 to 5
4 M2 operation check ADCB PJ3-1 to 4 F to G-4
5 Change ADCB.
⎯ ⎯
6 Change PRCB.
⎯ ⎯