Kyocera KM-4230 - Page 434

2A3/4
3-5-15
Poor contact of
the humidity
sensor PCB
connector ter-
minals.
Defective exter-
nal temperature
thermistor.
Poor contact of
the humidity
sensor PCB
connector ter-
minals.
Defective exter-
nal temperature
thermistor.
Toner main
hopper lockup.
Defective toner
hopper lockup
sensor.
Poor contact of
the toner hop-
per lockup sen-
sor connector
terminals.
Defective toner
recycle motor.
Poor contact of
the toner re-
cycle motor
connector ter-
minals.
Reinsert the connector. Also
check for continuity within the
connector cable. If none, rem-
edy or replace the cable.
Replace the humidity sensor
PCB.
Reinsert the connector. Also
check for continuity within the
connector cable. If none, rem-
edy or replace the cable.
Replace the humidity sensor
PCB.
Remove the recycled toner in
the toner main hopper if it
locks up.
Replace the toner hopper
lockup sensor.
Reinsert the connectors. Also
check for continuity within the
cable. If none, remedy or re-
place the cable.
Check for continuity across
the coils. If none, replace the
recycle motor.
Reinsert the connectors. Also
check for continuity within the
cable. If none, remedy or re-
place the cable.
C730
C731
C740
Broken external tempera-
ture thermistor wire
• The input voltage is above
4.5 V (230 bits).
Short-circuited external
temperature thermistor
• The input voltage is below
0.5 V (250 bits).
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.
Code Contents
Remarks
Causes
Check procedures/
corrective measures