Konica Minolta bizhub C203 Service Manual page 500

Field Service Ver. 1.0 Jul. 2007
15.3.3 Misfeed at tray 1 feed section
A. Detection timing
Type
Detection of • The leading edge of the paper does not turn ON the sensor in front of tim. roller
misfeed at tray 1
feed section
Detection of paper • The paper feed tray 1 chain feed sensor (PS1) is turned ON when the main
left in tray 1 feed
section
Tray 1 feed • For paper fed from the tray 1, due to a delay in paper arrival, loop forming in
section
loop registration
reversing jam
Tray 1 feed section • For paper fed from the tray1, TOD permit continues to be disabled for a prede-
TOD permit waiting
jam
B. Action
Transport motor (M1)
Paper feed tray 1 paper feed clutch (CL1)
Paper feed tray 1 chain feed sensor (PS1)
Sensor in front of tim. roller (PS23)
Step
1 Initial check items
2 PS1 I/O check, sensor check
3 PS23 I/O check, sensor check
4 CL1 operation check
5 M1 operation check
6 Change PRCB
(PS23) even after the lapse of a given period of time after the tray 1 starts to
feed paper.
power switch is turned ON, a door or cover is opened and closed, or a misfeed
or malfunction is reset.
front of the timing roller is not complete before the rise timing of the transport
motor (M1).
termined period of time after the timing of TOD output.
Relevant parts
Action
Description
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
—
PRCB CN12PRCB-8 (ON)
PRCB CN1PRCB-3 (ON)
PRCB CN12PRCB-11 (ON)
PRCB CN34PRCB-10 (REM)
PRCB CN34PRCB-13 (LOCK)
—
15. Jam display
Location (Electri-
cal component)
—
D-8
D-18
D-9
D-23
—
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