Ricoh D072 Service Manual page 300

No.
Definition
ADF gate abnormal 2
The ADF does not send the FGATE
761 B
signal within 30 seconds after the
ADF starts scanning.
ADF gate abnormal 3
The ADF continues to send the
762 B
FGATE signal for more than 60
seconds after the ADF starts
scanning.
Mechanical total counter error
901 B
The polling module does not detect
the mechanical total counter.
Engine total counter error
903 B
The checksum of the total counter is
not correct.
Memory error
An error occurs during the memory
check conducted when the main
928 B
power switch is turned on or when
the copier is recovering from the
energy saver mode.
SM Appendix
Symptom
3-45
SC Tables (Basic: D067/D072)
Possible Cause
Defective ADF connector
Defective SBU board
Defective ADF connector
Defective SBU board
Defective mechanical total
counter
Defective BICU
Loose connection
Defective NVRAM on the BICU
Defective memory
Defective BICU
Loose connection between the
BICU and the memory
D067/D068/D069/D072