Ricoh FT4460, Service Manual, Page: 135 / 413

28 February 1989
12.2 SERVICE CALL CONDITIONS (Others)
Self Diagnostic Code 61:
Functional Drive
If the I/O control PCB does not receive pulses from the pulse generator for
longer than two seconds, Code 61 will be displayed.
Self Diagnostic Code 81:
jogger Fails to Return to Home Position
If the output of the jogger home position sensor remains low as the I/O con-
trol board is driving the fences outward, code 81 will be displayed.
Self Diagnostic Code 82:
jogge r Stays Home
If the output of the jogger home position sensor remains high as the I/O con-
trol board is driving the fences inward, code 82 will be displayed.
Self Diagnostic Code 91:
No Total Counter
The total counter is monitored by the system control PCB. If the total counter
confirm signal remains either high or low constantly, Code 91 will be dis-
played.
Self Diagnostic Code 93:
System and I/O Control Communication Failure
If the system control PCB and the I/O control PCB are unable to communi-
cate, Code 93 will be displayed.
Self Diagnostic Code 95:
No Destination Signal
If the system control board can not distinguish the destination code, Service
Code 95 is displayed.
Note: This would happen if the wrong version system control PCB were in-
stalled.
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