Field Service Ver. 1.0 Jun. 2008
16. Jam display
281
T
roubleshooting
16.3.3
Misfeed at tray 1 feed section
A. Detection timing
B. Action
Type
Description
Detection of
misfeed at tray 1
feed section
• The leading edge of the paper does not turn ON the sensor in front of tim. roller
(PS1) even after the lapse of a given period of time after the tray 1 starts to feed
paper.
Tray 1 feed
section
loop registration
reversing jam
• For paper fed from the tray 1, due to a delay in paper arrival, loop forming in
front of the timing roller is not complete before the rise timing of the transport
motor (M1).
Tray 1 feed section
image write start
signal permit wait-
ing jam
• For paper fed from the tray1, the image write start signal permit continues to be
disabled for a predetermined period of time after the timing of the image write
start signal output.
Relevant parts
Transport motor (M1)
Tray 1 paper feed clutch (CL2)
Sensor in front of tim. roller (PS1)
Printer control board (PRCB)
Step
Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Initial check items
—
—
2
PS1 I/O check, sensor check
PRCB CN1-3 (ON)
C to D-19
3
CL2 operation check
PRCB CN5-18 (REM)
C to D-5
4
M1 operation check
PRCB CN27-14 (REM)
PRCB CN28-2 (LOCK)
C to D-23
5
Change PRCB
—
—
d
-Color
M
F
201
Y109660-1 Sevice Manual