Ricoh D072 Service Manual page 271

SC Tables (F/SPF: D068/D069)
No.
Symptom
Definition
Controller-to-operation panel communication error at startup
After powering on the machine,
communication between the
672 B
controller and operation panel does
not begin, or the communication is
interrupted after a normal startup.
D067/D068/D069/D072
Possible Cause/Countermeasure
Controller stalled
Controller board installed
incorrectly
Defective controller board
Operation panel connector loose
or defective
Poor connection of DIMM and
optional boards on the controller
board
1. Check the setting of
SP5875-001. If the setting is set
to "1 (OFF)", change it to "0
(ON)".
3-16 SM Appendix