Misfeed At Duplex Unit Pre-Registration Section (Ad) - Konica Minolta bizhub C250 Service Manual

15. Jam Display
15.3.10 Misfeed at Duplex Unit pre-registration section (AD-503)
A. Detection Timing
Type
Detection of The Registration Roller Sensor (PC1) is not blocked even after the lapse of a
misfeed at Duplex given period of time after a Duplex paper feed sequence has been started.
pre-registration
section
Duplex Unit Pre- Rise timing of load for registration is earlier than the one for making the loop at
registration section front of the Registration Roller at pre-registration feed.
Loop Registration
Reversing JAM
detection
B. Action
Registration Roller Sensor (PC1)
Duplex Unit Switchback Motor (M1 DU)
Duplex Unit Transport Motor (M2 DU)
Step
1 Initial check items
2 PC1 I/O check, Sensor check
3 M1 DU operation check
4 M2 DU operation check
5 Change PWB-A DU
6 Change PWB-M
412
Relevant Electrical Parts
Action
Field Service Ver. 3.0 Aug. 2006
Description
Duplex Control Board (PWB-A DU)
Mechanical Control Board (PWB-M)
WIRING DIAGRAM
Control Signal
—
PWB-M CNSEN-3 (ON)
PWB-A DU PJ4A DU-1 to 4
PWB-A DU PJ5A DU-1 to 4
—
—
Location (Electri-
cal Component)
—
C-3
R-22
R-22
—
—