Misfeed At Tray 2 Feed, Tray 2 Vertical Transport Section - Konica Minolta bizhub C250P Service Manual

Field Service Ver. 2.0 Mar. 2006
22.4.4

Misfeed at Tray 2 feed, Tray 2 vertical transport section

A. Detection Timing
Type
Detection of The leading edge of the paper does not block the Tray 2 Vertical Transport Sensor
misfeed at Tray 2 (PC8-PC) even after the lapse of a given period of time after the Tray 2 Paper
feed section Feed Motor (M1-PC) has been energized.
Detection of The Registration Roller Sensor (PC1) is not blocked even after the lapse of a
misfeed at Tray 2 given period of time after the paper has blocked the Tray 2 Vertical Transport Sen-
vertical transport sor (PC8-PC).
section
Tray 2 Vertical Transport Sensor (PC8-PC) does not transmit the paper even after
the lapse of a given period of time after the paper has blocked PC8-PC.
Tray 2 Vertical Rise timing of load for registration is earlier than the one for making the loop at
Transport section front of the Registration Roller at Tray 2 feed.
Loop Registration
Reversing JAM
Detection of paper Tray 2 Vertical Transport Sensor (PC8-PC) is blocked when the Main Power
left in Tray 2 Switch is turned ON, a door or cover is opened and closed, or a misfeed or mal-
function is reset.
Tray 2 Paper Take-Up Sensor (PC9-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.
B. Action
Tray 2 Paper Take-Up Sensor (PC9-PC)
Tray 2 Vertical Transport Sensor (PC8-PC)
Registration Roller Sensor (PC1)
Tray 2 Paper Feed Motor (M1-PC)
Step
1 Initial check items
2 PC9-PC I/O check, Sensor check
3 PC8-PC I/O check, Sensor check
4 PC1 I/O check, Sensor check
5 M1-PC operation check
6 Change PWB-Z-PC
7 Change PWB-M
Description
Relevant Electrical Parts
Tray 2 Control Board (PWB-Z-PC)
Mechanical Control Board (PWB-M)
Action
22. Jam Display
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