Field Service Ver. 2.0 Mar. 2006
22. Jam Display
299
bizhub C250P
T
roubleshooting
22.4.8
Misfeed at Tray 4 Feed and Tray 4 vertical transport section (PC203)
A. Detection Timing
B. Action
Type
Description
Detection of
misfeed at Tray 4
feed or Vertical
Transport Section
The leading edge of the paper does not block the Tray 4 Vertical Transport Sensor
(PC126-PC) even after the lapse of a given period of time after the Tray4 Take-up
Motor (M123-PC) has been energized.
The Tray 3 Vertical Transport Sensor (PC117-PC) is not blocked even after the
lapse of a given period of time after the paper has blocked the Tray 4 Vertical
Transport Sensor (PC126-PC).
The Tray 4 Take-Up Sensor (PC125-PC) is not unblocked even after the lapse of a
given period of time after it has been blocked by the paper.
Tray 4 Vertical
Transport section
Loop Registration
Reversing JAM
Rise timing of load for registration is earlier than the one for making the loop at
front of the Registration Roller at Tray 4 feed.
Detection of paper
left in Tray 4
The Tray 4 Vertical Transport Sensor (PC126-PC) 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 Tray 4 Take-Up Sensor (PC125-PC) 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.
Relevant Electrical Parts
Tray 4 Take-Up Sensor (PC125-PC)
Tray 4 Vertical Transport Sensor (PC126-PC)
Tray 3 Vertical Transport Sensor (PC117-PC)
Tray4 Take-up Motor (M123-PC)
Registration Roller Sensor (PC1)
Control Board (PWB-C2 PC)
Mechanical Control Board (PWB-M)
Step
Action
1
Initial check items
2
PC1 I/O check, Sensor check
3
PC125-PC I/O check, Sensor check
4
PC126-PC I/O check, Sensor check
5
PC117-PC I/O check, Sensor check
6
M123-PC operation check
7
Change PWB-C2 PC
8
Change PWB-M
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