Kyocera KM-C2525E Service Manual page 211

Code
C7912 Developing unit C EEPROM error
Reading from or writing to EEPROM
cannot be performed.
C7913 Developing unit M EEPROM error
Reading from or writing to EEPROM
cannot be performed.
C7914 Developing unit Y EEPROM error
Reading from or writing to EEPROM
cannot be performed.
C8020 Punch motor problem (optional 3000-
sheet document finisher)
The LOCK signal of the punch motor is
detected for more than 500 ms while the
punch motor is operating.
C8030 Tray upper limit detection problem
(optional document finisher)
When the tray elevation motor raises a
tray, the ON status of the tray upper limit
sensor is detected.
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC17 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective develop- Replace the developing unit C (see page 1-
ing PWB C. 5-25).
Poor contact in the Check the connection of connector YC17 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective develop- Replace the developing unit M (see page 1-
ing PWB M. 5-25).
Poor contact in the Check the connection of connector YC18 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective develop- Replace the developing unit Y (see page 1-
ing PWB Y. 5-25).
Poor contact in the Check the connection of connector on the
connector termi- punch PWB and the continuity across the
nals. connector terminals. Repair or replace if
necessary.
Defective punch Replace the punch motor.
motor.
Defective PWB. Replace the punch PWB or finisher main
PWB and check for correct operation.
The tray upper limit Reinsert the connector. Also check for conti-
sensor/push paper nuity within the connector cable. If none,
sensor/surface remedy or replace the cable.
view sensor con-
nector makes poor
contact.
Defective tray Replace the sensor.
upper limit sensor/
push paper sensor/
surface view sen-
sor.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
2JL/2JJ/2JG/2JD
Remarks
1-4-41