Kyocera TASKalfa 300i Service Manual page 173

Code
C7910 Developing unit EEPROM error
Reading from or writing to EEPROM
cannot be performed.
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.
C8040 Belt problem (optional document fin-
isher)
The belt sensor does not turn on/off
within specified time of the belt solenoid
turning on.
C8140 Tray elevation motor problem
(optional document finisher)
The tray low limit sensor or paper sur-
face sensor 1/2 cannot be detected to be
on within 10 s since the tray elevation
motor is activated.
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector on the
connector termi- engine PWB and the continuity across the
nals. connector terminals. Repair or replace if
necessary.
Defective develop- Replace the developing unit.
ing unit.
The tray upper limit Reinsert the connector. Also check for conti-
sensor, paper sur- nuity within the connector cable. If none,
face sensor 1/2 remedy or replace the cable.
connector makes
poor contact.
Defective tray Replace the sensor.
upper limit sensor,
paper surface sen-
sor 1/2.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
The belt sensor, Reinsert the connector. Also check for conti-
belt solenoid con- nuity within the connector cable. If none,
nector makes poor remedy or replace the cable.
contact.
Defective belt sen- Replace the belt sensor.
sor.
Defective belt sole- Replace the belt solenoid.
noid.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
The tray elevation Reinsert the connector. Also check for conti-
motor connector nuity within the connector cable. If none,
makes poor con- remedy or replace the cable.
tact.
The tray elevation Replace the tray elevation motor.
motor malfunc-
tions.
The tray lower limit Reinsert the connector. Also check for conti-
sensor, paper sur- nuity within the connector cable. If none,
face sensor 1/2 remedy or replace the cable.
connector makes
poor contact.
Defective tray Replace the sensor.
lower limit sensor,
paper surface sen-
sor 1/2.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
Remarks
2K5
1-4-29