Codes C8440 - C8900 - Kyocera TASKalfa 250ci Service Manual

Code
C8440 Sensor adjusting problem (optional
document finisher)
The sensor cannot be adjusted within
the specified range.
C8460 EEPROM problem (optional document
finisher)
Reading from or writing to EEPROM
cannot be performed.
C8500 Mailbox communication error
(optional mailbox of 3000-sheet docu-
ment finisher)
Communication with the mailbox is not
possible although the connection is
detected.
C8510 Mailbox drive motor problem
(optional mailbox of 3000-sheet docu-
ment finisher)
The motor lock signal is detected above
500 ms during driving the mailbox drive
motor.
C8800 Document finisher communication
error (optional 3000-sheet document
finisher)
A communication error from document
finisher is detected 10 times in succes-
sion.
C8900 Backup memory data problem
(optional 3000-sheet document fin-
isher)
Read and write data does not match 3
times in succession.
Contents
Causes Check procedures/corrective measures
The paper entry Reinsert the connector. Also check for conti-
sensor connector nuity within the connector cable. If none,
makes poor con- remedy or replace the cable.
tact.
Defective paper Replace the paper entry sensor and check
entry sensor. for correct operation.
The optical path of Remove the foreign matter.
the paper entry
sensor is blocked
by foreign matter.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
Defective Replace the finisher main PWB and check
EEPROM or fin- for correct operation.
isher main PWB.
Poor contact in the Check the connection of the connector of
connector termi- the mailbox and the connector YC7 on the
nals. finisher main PWB, and the continuity
across the connector terminals. Repair or
replace if necessary.
Defective PWB. Replace the mailbox main PWB or finisher
main PWB and check for correct operation.
Poor contact in the Check the connection of connector YC5 on
connector termi- the mailbox main PWB and the connector of
nals. the mailbox drive motor, and the continuity
across the connector terminals. Repair or
replace if necessary.
Defective mailbox Replace the mailbox drive motor.
drive motor.
Defective PWB. Replace the mailbox main PWB or finisher
main PWB and check for correct operation.
Poor contact in the Check the connection of connector on the
connector termi- engine PWB and the connector on the fin-
nals. isher main PWB, and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective PWB. Replace the finisher main PWB or engine
PWB and check for correct operation.
Poor contact in the Check the connection of connector on the
connector termi- finisher main PWB and the connector of the
nals. machine, and the continuity across the con-
nector terminals. Repair or replace if neces-
sary.
EEPROM installed Install EEPROM correctly.
incorrectly.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
2JZ/2JX/2JV/2H7
Remarks
1-4-57