Kyocera KM-4230 Service Manual page 123

1. Jam at power-on (jam code 00)
• One or more of the switches in the paper conveying system is on when the main switch
is turned on.
2. Paper feed section
• No paper feed from copier upper drawer (jam code 10)
Paper feed switch 2 (PFSW2) does not turn on within 656 ms after the upper paper feed
clutch (PFCL-U) is turned on; even if retry of this operation is carried out twice after
turning off the upper paper feed clutch (PFCL-U) for 1 second, the switch again fails
to turn on within the same time.
PFCL-U
PFSW2
• No paper feed from copier lower drawer (jam code 11)
Paper feed switch 3 (PFSW3) does not turn on within 656 ms after the lower paper feed
clutch (PFCL-L) is turned on; even if retry of this operation is carried out twice after
turning off the lower paper feed clutch (PFCL-L) for 1 second, the switch again fails to
turn on within the same time.
PFCL-L
PFSW3
• No paper feed from bypass (jam code 14)
The feed switch (FSW) does not turn on within 1120 ms of the bypass paper feed clutch
(BYPPFCL) turning on; the clutch is then held off for 1 s and turned back on, but the
switch again fails to turn on within 1120 ms of the retry.
BYPPFCL
FSW
1 s
656ms
656ms
Timing chart 2-2-1
1 s
656ms 656ms
Timing chart 2-2-2
1 s
1120 ms
Timing chart 2-2-3
1 s
656ms
1 s
656ms
1120 ms
2A3/4
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
2-2-3