Self-Diagnosis; Self-Diagnostic Function (Operation Panel Is A 7-Segment Type); Self Diagnostic Codes (Operation Panel Is A 7-Segment Type) - Kyocera DF-420 Service Manual

3MH
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Self-diagnosis

(1) Self-diagnostic function (operation panel is a 7-segment type)

When an unexpected error is detected for some reason, a system error (A call error) will be indicated. After a system error
(A call error) is indicated, the error can be cleared by turning the main power switch off and then on. If a system error (A
call error) occurs frequently, a fault may have occurred. Check the details of the C call to take proper measures.

(2) Self diagnostic codes (operation panel is a 7-segment type)

Code
A0420 First paper feeder communication
problem
Communication fails five times succes-
sively.
A0500 Second paper feeder communication
problem
Communication fails five times succes-
sively.
A0510 Third paper feeder communication
problem
Communication fails five times succes-
sively.
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Contents
Causes Check procedures/corrective measures
First paper feeder Check the installation state of the first paper
installed incor- feeder and adjust it if it is not properly
rectly. installed.
Defective PWB. Replace the main/engine PWB or cassette
main PWB and check for correct operation.
Second paper Check the installation state of the second
feeder installed paper feeder and adjust it if it is not properly
incorrectly. installed.
Defective PWB. Replace the main/engine PWB or cassette
main PWB and check for correct operation.
Third paper feeder Check the installation state of the third paper
installed incor- feeder and adjust it if it is not properly
rectly. installed.
Defective PWB. Replace the main/engine PWB or cassette
main PWB and check for correct operation.
Remarks