Kyocera KM-4230 Service Manual page 434

Code Contents
C730 Broken external tempera-
ture thermistor wire
• The input voltage is above
4.5 V (230 bits).
C731 Short-circuited external
temperature thermistor
• The input voltage is below
0.5 V (250 bits).
C740 Toner hopper problem
• The toner hopper lockup
sensor does not turn off af-
ter the toner recycle motor
has rotated for at least 1
minute.
Causes
Poor contact of Reinsert the connector. Also
the humidity check for continuity within the
sensor PCB connector cable. If none, rem-
connector ter- edy or replace the cable.
minals.
Defective exter- Replace the humidity sensor
nal temperature PCB.
thermistor.
Poor contact of Reinsert the connector. Also
the humidity check for continuity within the
sensor PCB connector cable. If none, rem-
connector ter- edy or replace the cable.
minals.
Defective exter- Replace the humidity sensor
nal temperature PCB.
thermistor.
Toner main Remove the recycled toner in
hopper lockup. the toner main hopper if it
locks up.
Defective toner Replace the toner hopper
hopper lockup lockup sensor.
sensor.
Poor contact of Reinsert the connectors. Also
the toner hop- check for continuity within the
per lockup sen- cable. If none, remedy or re-
sor connector place the cable.
terminals.
Defective toner Check for continuity across
recycle motor. the coils. If none, replace the
recycle motor.
Poor contact of Reinsert the connectors. Also
the toner re- check for continuity within the
cycle motor cable. If none, remedy or re-
connector ter- place the cable.
minals.
Remarks
Check procedures/
corrective measures
2A3/4
3-5-15