Kyocera KM-4230 Service Manual page 129

The duplex registration switch (DUPRSW) does not turn on within 707 ms of the duplex
forward solenoid (DUPFWDSOL) turning on.
DUPFWDSOL
DUPRSW
• Duplex paper conveying section (jam code 61)
The duplex paper conveying switch (DUPPCSW) does not turn on within 860 ms of the
duplex registration switch (DUPRSW) turning on.
DUPRSW
DUPPCSW
The duplex eject switch (DUPESW) does not turn on within 860 ms of the duplex paper
conveying switch (DUPPCSW) turning on.
DUPPCSW
DUPESW
Paper feed switch 1 (PFSW1) does not turn on within 833 ms of the duplex eject switch
(DUPESW) turning on.
DUPESW
PFSW1
707 ms
Timing chart 2-2-21
860 ms
Timing chart 2-2-22
860 ms
Timing chart 2-2-23
833 ms
Timing chart 2-2-24
2A3/4
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2-2-9