Misfeed At Tray 1 Paper Feed Section - Konica Minolta magicolor 7450 Service Manual

Field Service Ver. 1.0 May 2006
13.4.6

Misfeed at Tray 1 paper feed section

A. Detection Timing
Type
Detection of
The leading edge of the paper does not block the Registration Roller Sensor
misfeed at Tray 1
(PC1) even after the lapse of a given period of time after the Tray 1 Feed Clutch
paper feed
(CL5) has been energized.
section
Tray 1 paper feed Rise timing of load for registration is earlier than the one for making the loop at
section front of the Registration Roller at Tray 1 feed.
Loop Registration
Reversing JAM
B. Action
Registration Roller Sensor (PC1)
Tray 1 Feed Clutch (CL5)
Step
1 Initial check items
2 PC1 I/O check, Sensor check
3 CL5 operation check
4 Change PWB-M
Relevant Electrical Parts
Action
Description
Mechanical Control Board (PWB-M)
WIRING DIAGRAM
Control Signal
—
PWB-M CNSEN-3 (ON)
PWB-M CNTRY1-2 (ON)
—
13. Jam Display
Location (Electri-
cal Component)
—
C-3 to 4
C-9
—
183