2K5
1-4-18
1-4-2 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.
List of system errors
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 power switch off and then on. If the error is detected continuously, however, per-
form 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
In addition, it is a system error if the following error code is displayed. When an error has occurred, clear the error by
turning the main power switch off then on.
CF1XX, CF2XX, CF3XX, CF4XX, CF5XX, CF6XX, CF7XX, CFAXX, CFBXX, 0xFBXX
Partial operation control
If one of the following service codes is detected, partial operation control will be activated. Take actions to clear the cause
of the trouble and perform maintenance item U906 to reset partial operation control.
System error Contents Operation
0420 Optional paper feeder communication problem
System error ā service call ā partial operation
4200 BD initialization problem
System error
ā Normal service call processing
8800 Document finisher communication error
(optional 3000-sheet document finisher)
System error
ā service call ā partial operation
9000 Optional DP communication problem
System error
ā service call ā partial operation
Code Contents
C0840 Faults of RTC
C1010 Lift motor 1 error
C1020 Lift motor 2 error
C1030 PF lift motor 1 error (optional paper feeder)
C1040 PF lift motor 2 error (optional paper feeder)
C2600 PF paper drive motor error (optional paper feeder)
C8030 Tray upper limit detection problem (optional document finisher)
C8040 Belt problem (optional document finisher)
C8140 Tray elevation motor problem (optional document finisher)
C8170 Finisher front side registration motor problem (optional built-in finisher)
C8180 Finisher rear side registration motor problem (optional built-in finisher)
C8190 Finisher trailing edge registration motor problem (optional built-in finisher)
C8210 Stapler problem (optional document finisher)
Finisher stapler problem (optional built-in finisher)
C8320 Adjustment motor 2 problem (optional document finisher)
C8330 Adjustment motor 1 problem (optional document finisher)
C8350 Roller motor problem (optional document finisher)