Self-Diagnosis; Self-Diagnostic Function; Self Diagnostic Codes - Kyocera DP-750 Service Manual

3LL/3LK
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Self-diagnosis

(1) Self-diagnostic function

This unit is equipped with a self-diagnostic function. When a problem is detected, copying is disabled and the problem dis-
played as a code consisting of C followed by a number, indicating the nature of the problem.
A message is also displayed requesting the user to call for service.
After removing the problem, the self-diagnostic function can be reset by turning safety switches off and back on.

(2) Self diagnostic codes

Code
C3210 CIS lamp problem
When input value at the time of CIS illu-
mination does not exceed the threshold
value between 5 s.
C3310 CIS AGC problem
After AGC, correct input is not obtained
at CIS.
C9000 DP communication problem
A communication error is detected.
C9040 DP lift motor going up error
The tray upper limit switch does not turn
on within 2 s of DP lift motor turning on.
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Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector on the
connector termi- ISM PWB and the connector on the DP
nals. driver PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.
Defective DP driver Replace the DP driver PWB and check for
PWB. correct operation.
Defective DP Replace the DP inverter PWB and check for
inverter PWB. correct operation.
Defective CIS. Replace the CIS and check for correct oper-
ation.
Defective DP driver Replace the DP driver PWB and check for
PWB. correct operation.
CIS output prob- Replace the CIS and check for correct oper-
lem. ation.
Defective DP Replace the DP inverter PWB and check for
inverter PWB. correct operation.
Poor contact in the Check the connection of connector YC6 on
connector termi- the ISM PWB and the connector of the DP,
nals. and the continuity across the connector ter-
minals. Repair or replace if necessary.
Defective PWB. Replace the DP driver PWB or ISM PWB
and check for correct operation.
Loose connection Reinsert the connector. Also check for conti-
of the DP lift motor nuity within the connector cable. If none,
connector. remedy or replace the cable.
Malfunction of the Replace the DP lift motor and check for cor-
DP lift motor. rect operation.
Loose connection Reinsert the connector. Also check for conti-
of the tray upper nuity within the connector cable. If none,
limit switch con- remedy or replace the cable.
nector.
Malfunction of the Replace the tray upper limit switch and
tray upper limit check for correct operation.
switch.
Defective DP driver Replace the DP driver PWB and check for
PWB. correct operation.
Remarks