Kyocera KM-2530 Service Manual page 190

Code
C7410 Drum unit connector insertion prob-
lem
• Absence of the drum unit is detected
continuously for 1500 ms while there
is no error on the copier.
C7800 Broken external temperature ther-
mistor wire
• The input voltage is above 4.5 V.
C7810 Short-circuited external temperature
thermistor
• The input voltage is below 1.0 V.
C8010 Finisher* paper conveying motor
problem
• The paper conveying motor lockup
signal is detected for 0.5 s or longer.
C8030 Finisher* paper conveying belt prob-
lem
• An on-to-off or off-to-on state change
of the paper conveying belt home po-
sition sensor is not detected within 2 s
of the paper conveying belt clutch
turning on.
*: Optional
Contents
Causes Check procedures/corrective measures
Drum unit connec- Reinsert the drum unit connector if neces-
tor inserted incor- sary.
rectly.
Defective drum Replace the drum unit.
unit connector.
Poor contact in Reinsert the connector. Also check for con-
the humidity sen- tinuity within the connector cable. If none,
sor PCB connec- remedy or replace the cable.
tor terminals.
Defective external Replace the humidity sensor PCB.
temperature ther-
mistor.
Poor contact in Reinsert the connector. Also check for con-
the humidity sen- tinuity within the connector cable. If none,
sor PCB connec- remedy or replace the cable.
tor terminals.
Defective external Replace the humidity sensor PCB.
temperature ther-
mistor.
Poor contact in Reinsert the connector. Also check for con-
the paper convey- tinuity within the connector cable. If none,
ing motor connec- remedy or replace the cable.
tor terminals.
The paper con- Replace the paper conveying motor and
veying motor mal- check for correct operation.
functions.
Defective finisher Replace the finisher main PCB and check
main PCB. for correct operation.
The paper con- Adjust the paper conveying belt so that it is
veying belt is out in phase and check for correct operation.
of phase.
The paper con- Replace the paper conveying belt clutch
veying belt clutch and check for correct operation.
malfunctions.
The paper con- Replace the paper conveying belt home
veying belt home position sensor and check for correct op-
eration.
position sensor
malfunctions.
The paper con- Reinsert the connector. Also check for con-
veying belt home tinuity within the connector cable. If none,
position sensor remedy or replace the cable.
connector makes
poor contact.
The internal tray Check whether the internal tray unit or front
is incorrectly in- cover catches are damaged.
serted.
Remarks
2DF
1-5-37