Kyocera KM-6030 - Page 200

2FB/2FC-4
1-5-39
C7210 Short-circuited internal thermistor
• The thermistor input value is 0.5 V or
less.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC23 on
the engine PWB and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective develop-
ing humidity sen-
sor.
Replace the developing humidity sensor.
Defective engine
PWB.
Replace the engine PWB.
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.
Defective toner
level detection sen-
sor.
Replace the toner level detection sensor.
Poor contact in the
toner level detec-
tion sensor con-
nector terminals.
Check the connection of connectors YC2
and YC5 on the deck PWB and YC3 on the
engine PWB. Reinsert the connector. Also
check for continuity within the connector
cable. If none, remedy or replace the cable.
C7800 Broken external thermistor wire
• The thermistor output value is 4.5 V or
more.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC13 on
the engine PWB and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective humidity
sensor.
Replace the humidity sensor.
C7810 Short-circuited external thermistor
• The thermistor input value is 0.5 V or
less.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC13 on
the engine PWB and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective humidity
sensor.
Replace the humidity sensor.
Defective engine
PWB.
Replace the engine PWB.
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.
Loose connection
of the paper con-
veying motor con-
nector.
Check the connection of connector YC14 on
the finisher main PWB. Reinsert the connec-
tor. Also check for continuity within the con-
nector cable. If none, remedy or replace the
cable.
Defective paper
conveying motor.
Replace the paper conveying motor and
check for correct operation.
Defective finisher
main PWB.
Replace the finisher main PWB and check
for correct operation.
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.
Loose connection
of the punch motor
connector.
Check the connection of connector YC13 on
the finisher main PWB and YC1 on the
punch PWB. Reinsert the connector. Also
check for continuity within the connector
cable. If none, remedy or replace the cable.
Defective punch
motor.
Replace the punch motor and check for cor-
rect operation.
Defective finisher
main PWB.
Replace the finisher main PWB and check
for correct operation.
Code Contents
Remarks
Causes Check procedures/corrective measures