Kyocera KM-4230 Service Manual page 131

(2) Large paper deck (42 ppm: optional/52 ppm: standard)
• No paper feed from large paper deck (jam code 12)
Paper feed switch 4 (PFSW4) does not turn on within 672 ms of paper feed clutch 1
(PFCL1) turning on; the clutch is then held off for 1 s and turned back on, but the switch
again fails to turn on within 672 ms of the retry.
PFCL1
PFSW4
• Multiple sheets in paper feed section (jam code 21)
Paper feed switch 4 (PFSW4) does not turn off within 1470 ms of turning on.
PFSW4
PPSENS3
PFCL2
Figure 2-2-3 Large paper deck
1 s
672 ms
Timing chart 2-2-28
1470 ms
Timing chart 2-2-29
PPSENS2
PPSENS1
672 ms
2A3/4
PFSW4
PFCL1
Off
On
Off
On
Off
On
2-2-11