Kyocera KM-4230 Service Manual page 137

• An original jam in the original switchback section (jam code 72)
During the switchback operation of an original in the double-sided original mode, the
original switchback switch (OSBSW) does not turn on within 2520 original feed motor
(OFM) pulses from the start of reverse rotation of the original feed motor (OFM).
OFM
OSBSW
During switchback operation of an original in the double-sided original mode, the
original switchback switch (OSBSW) does not turn off within 5100 original feed motor
(OFM) pulses from the original switchback switch (OSBSW) turning on.
OSBSW
During the secondary original feed in the double-sided original mode, the DF timing
switch (DFTSW) does not turn on within 1528 original conveying motor (OCM) pulses
from the original conveying motor (OCM) turning on.
OCM
DFTSW
2520 P*
Timing chart 2-2-39
5100 P*
Timing chart 2-2-40
1528 P*
Timing chart 2-2-41
Off
On (Rev.)
Off
On
* Burst of OFM pulses
* Burst of OFM pulses
* Burst of OCM pulses
2A3/4
Off
On
Off
On
Off
On
2-2-17