22. Jam Display
Field Service Ver. 2.0 Mar. 2006
294
bizhub C250P
T
roubleshooting
22.4.3
Misfeed at 2nd Image Transfer section
A. Detection Timing
B. Action
Type
Description
Detection of
misfeed at 2nd
Image Transfer
section
The leading edge of the paper does not block the Exit Sensor (PC2) even after the
lapse of a given period of time after the Registration Roller Clutch (CL1) has been
energized.
The Registration Roller Sensor (PC1) is not unblocked even after the lapse of a
given period of time after it has been blocked by the paper.
Detection of paper
left in 2nd Image
Transfer section
The Registration Roller Sensor (PC1) is blocked when the Main Power Switch is
turned ON, a door or cover is opened and closed, or a misfeed or malfunction is
reset.
The OHP Sensor (PC4) is blocked when the Main Power Switch is turned ON, a
door or cover is opened and closed, or a misfeed or malfunction is reset.
The Exit Sensor (PC2) is blocked when the Image Transfer Belt Unit is being
cleaned.
Misfeed detected
as a result of
delayed deactiva-
tion of sensor
Registration Roller Sensor (PC1) does not transmit the paper even after the lapse
of a given period of time after the paper has blocked PC1 at Tray 1 feed.
2nd Image
Transfer section
Loop Registration
Reversing JAM
Rise timing of load for registration is earlier than the one for making loop at front of
the Registration Roller when the sensor at front of the Registration Roller is
blocked at Paper feed.
Relevant Electrical Parts
Registration Roller Sensor (PC1)
Exit Sensor (PC2)
OHP Sensor (PC4)
Registration Roller Clutch (CL1)
Mechanical Control Board (PWB-M)
Step
Action
1
Initial check items
2
PC1 I/O check, Sensor check
3
PC2 I/O check, Sensor check
4
PC4 I/O check, Sensor check
5
CL1 operation check
6
Change PWB-M
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