Misfeed At Tray 3 Feed And Tray 3 Vertical Transport Section (Pc-103/Pc) - Konica Minolta bizhub C250 Service Manual

Field Service Ver. 3.0 Aug. 2006
15.3.7 Misfeed at Tray 3 Feed and Tray 3 vertical transport section (PC-103/PC203)
A. Detection Timing
Type
Detection of The leading edge of the paper does not block the Tray 3 Vertical Transport Sensor
misfeed at Tray 3 (PC117-PC) even after the lapse of a given period of time after the Tray3 Take-up
feed or Vertical Motor (M122-PC) has been energized.
Transport Section
The Tray 2 Vertical Transport Sensor (PC8-PC) is not blocked even after the lapse
of a given period of time after the paper has blocked the Tray 3 Vertical Transport
Sensor (PC117-PC).
The Tray 3 Vertical Transport Sensor (PC117-PC) is not unblocked even after the
lapse of a given period of time after it has been blocked by the paper.
Tray 3 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 3 feed.
Loop Registration
Reversing JAM
Detection of paper The Tray 3 Vertical Transport Sensor (PC117-PC) is blocked when the Main
left in Tray 3 Power Switch is turned ON, a door or cover is opened and closed, or a misfeed or
malfunction is reset.
The Tray 3 Take-Up Sensor (PC116-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 3 Take-Up Sensor (PC116-PC)
Tray 3 Vertical Transport Sensor (PC117-PC)
Tray 2 Vertical Transport Sensor (PC8-PC)
Tray3 Take-up Motor (M122-PC)
Registration Roller Sensor (PC1)
Step
1 Initial check items
2 PC1 I/O check, Sensor check
3 PC116-PC I/O check, Sensor check
4 PC117-PC I/O check, Sensor check
5 PC8-PC I/O check, Sensor check
6 M122-PC operation check
7 Change PWB-C2 PC
8 Change PWB-M
Relevant Electrical Parts
Action
Description
Control Board (PWB-C2 PC)
Mechanical Control Board (PWB-M)
WIRING DIAGRAM
Control Signal
—
PWB-M CNSEN-3 (ON)
PWB-C2 PC PJ6C2 PC-8 (ON) PC-103/203 C-4
PWB-C2 PC
PJ6C2 PC-11 (ON)
PWB-Z-PC PJ6Z PC-11 (ON)
PWB-C2 PC PJ5C2 PC-1 to 4
—
—
15. Jam Display
Location (Electri-
cal Component)
—
C-3
PC-103/203 C-4
S-25
PC-103/203 C-4
—
—
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