Konica Minolta bizhub c20 Service Manual page 488

Field Service Ver. 1.0 Sep. 2008
6.4.3 Misfeed at the tray 3 vertical transport section
A. Detection timing
Type
The media does not block the registration sensor (PS4) even after the lapse of a
Detection of mis-
given period of time after it has blocked the media feed sensor (PS3).
feed at tray 3
vertical transport
The media does not unblock the media feed sensor (PS3) even after the lapse of
section
a given period of time after it has blocked the media feed sensor (PS3).
B. Action
Media feed sensor (PS3)
Registration sensor (PS4)
Transport motor (M1)
Step
1 Initial check items
2 PS3 sensor check
3 PS4 sensor check
4 M1 operation check
5 Change PCCB.
6 Change MFPB/1.
Relevant electrical parts
Action
Description
PC control board (PCCB)
MFP board/1 (MFPB/1)
WIRING DIAGRAM
Control Signal
⎯
PCCB PJ5-6 (ON)
PRCB PJ15-3 (ON)
PCCB PJ3-1 to 4
⎯
⎯
6. Jam display
Location
(Electrical Compo-
nent)
⎯
B-4
bizhub C20
C to D-5
B-5
⎯
⎯
19