Kyocera KM-6030 Service Manual page 200

Code
C7210 Short-circuited internal thermistor
• The thermistor input value is 0.5 V or
less.
C7300 Toner hopper problem
• During toner replenishment after toner
empty has been detected, toner empty
could not be cleared in 3 times of
360 s.
C7800 Broken external thermistor wire
• The thermistor output value is 4.5 V or
more.
C7810 Short-circuited external thermistor
• The thermistor input value is 0.5 V or
less.
C8010 Document finisher* paper conveying
motor problem
• The LOCK signal of the paper convey-
ing motor is detected for more than
500 ms while the paper conveying
motor is operating.
However, the first 1 s after the paper
conveying motor is turned on is
excluded from detection.
C8020 Document finisher* punch motor
problem
• The LOCK signal of the punch motor is
detected for more than 500 ms while
the punch motor is operating.
However, the first 1 s after the punch
motor is turned on is excluded from
detection.
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC23 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective develop- Replace the developing humidity sensor.
ing humidity sen-
sor.
Defective engine Replace the engine PWB.
PWB.
Defective toner Replace the toner level detection sensor.
level detection sen-
sor.
Poor contact in the Check the connection of connectors YC2
toner level detec- and YC5 on the deck PWB and YC3 on the
tion sensor con- engine PWB. Reinsert the connector. Also
nector terminals. check for continuity within the connector
cable. If none, remedy or replace the cable.
Poor contact in the Check the connection of connector YC13 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective humidity Replace the humidity sensor.
sensor.
Poor contact in the Check the connection of connector YC13 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective humidity Replace the humidity sensor.
sensor.
Defective engine Replace the engine PWB.
PWB.
Loose connection Check the connection of connector YC14 on
of the paper con- the finisher main PWB. Reinsert the connec-
veying motor con- tor. Also check for continuity within the con-
nector. nector cable. If none, remedy or replace the
cable.
Defective paper Replace the paper conveying motor and
conveying motor. check for correct operation.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
Loose connection Check the connection of connector YC13 on
of the punch motor the finisher main PWB and YC1 on the
connector. punch PWB. Reinsert the connector. Also
check for continuity within the connector
cable. If none, remedy or replace the cable.
Defective punch Replace the punch motor and check for cor-
motor. rect operation.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
Remarks
2FB/2FC-4
1-5-39