3MH
1-4-7
(3) Self-diagnostic function (operation panel is an LCD type)
When an unexpected error is detected for some reason, a system error will be indicated. After a system error is indicated,
the error can be cleared by turning the main power switch off and then on. If the error is detected continuously, however,
perform the operation shown in Table 1-4-1. If a system error occurs frequently, a fault may have occurred. Check the
details of the C call to take proper measures.
Table 1-4-1
(4) Self diagnostic codes (operation panel is an LCD type)
System error
Contents
Operation
0420
First paper feeder communication problem
System error
→
service call
0500
Second paper feeder communication problem
System error
→
service call
0510
Third paper feeder communication problem
System error
→
service call
Code
Contents
Remarks
Causes
Check procedures/corrective measures
C0420
First paper feeder communication
problem
Communication fails five times succes-
sively.
First paper feeder
installed incor-
rectly.
Check the installation state of the first paper
feeder and adjust it if it is not properly
installed.
Defective PWB.
Replace the engine PWB or cassette main
PWB and check for correct operation.
C0500
Second paper feeder communication
problem
Communication fails five times succes-
sively.
Second paper
feeder installed
incorrectly.
Check the installation state of the second
paper feeder and adjust it if it is not properly
installed.
Defective PWB.
Replace the engine PWB or cassette main
PWB and check for correct operation.
C0510
Third paper feeder communication
problem
Communication fails five times succes-
sively.
Third paper feeder
installed incor-
rectly.
Check the installation state of the third paper
feeder and adjust it if it is not properly
installed.
Defective PWB.
Replace the engine PWB or cassette main
PWB and check for correct operation.
Summary of Contents for DF-420
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