Misfeed At Tray1 Paper Feed Section; Misfeed At Horizontal Transport Section - Konica Minolta magicolor 4690MF Service Manual

16. Jam display
16.3.7

Misfeed at tray1 paper feed section

A. Detection timing
Type
Detection of tray 1 The paper does not unblock the registration sensor (PS4) even after the lapse of a
paper feed section given period of time after the tray1 media feed clutch (CL2) is turned ON.
B. Action
Registration sensor (PS4)
Tray1 media feed clutch (CL2)
Transport motor (M3)
Step
1 Initial check items
2 PS4 sensor check
3 CL2 operation check
4 M3 operation check
5 Change PRCB.
16.3.8

Misfeed at horizontal transport section

A. Detection timing
Type
Detection of
The paper does not block the exit sensor/2 (PS31) even after the lapse of a given
misfeed at horizon-
period of time after the paper has blocked the exit sensor/2 (PS31).
tal transport section
B. Action
Exit sensor/1 (PS8)
Exit sensor/2 (PS31)
Step
1 Initial check items
Make the sensor check of exit sensor/1
(PS8) and, if any abnormal condition is
2
found, replace the fuser unit with a new
one.
3 PS31 sensor check
4 Change PRCB.
278
Relevant electrical parts
Action
Relevant electrical parts
Action
Field Service Ver. 1.0 May 2008
Description
Print control board (PRCB)
WIRING DIAGRAM
Control signal
⎯
PRCB PJ15-3 (ON)
PRCB PJ6-2 (REM)
PRCB PJ19-3 to 9
⎯
Description
Print control board (PRCB)
WIRING DIAGRAM
Control signal
⎯
⎯
PRCB PJ33-6 (ON)
⎯
Location (electri-
cal component)
⎯
D to E-5
D to E-16
L to M-4
⎯
Location (electri-
cal component)
⎯
⎯
D to E-1
⎯