Ricoh D072 Service Manual page 298

No.
Definition
Zero cross signal malfunction
The zero cross signal is not detected
within five seconds after the main
547 B
power switch is turned on. Or, the
zero cross signal is not detected
within one second after operation
begins.
Consecutive fusing jam
The paper jam counter for the fusing
unit reaches 3 times. The paper jam
counter is cleared if the paper is fed
559 A
correctly.
This SC is activated only when
SP1159-001 is set to "1" (default
"0").
Exhaust fan motor error
590 B
The exhaust fan motor is locked for
five seconds.
Accounting error 1
An error occurs during
632 C
communication with the MF
accounting device.
Accounting RAM error
634 C
An error occurs in the backup RAM
for the MF accounting device.
SM Appendix
Symptom
3-43
SC Tables (Basic: D067/D072)
Possible Cause
Defective power supply unit
Defective BICU
Paper jam in the fusing unit.
Loose connection of the exhaust
fan motor
Overload
Defective accounting device
Loose connection
Defective accounting device
D067/D068/D069/D072