Ricoh B286 Service Manual page 230

SC Code Descriptions
Key/card counter device error 3
634 B
The backup battery of the counter
device RAM is low.
Key/card counter device error 4
After installation of the device a
635 B
message alerts user to a battery voltage
abnormal error.
650 B @Remote communication error 1
A dial-up or modem error
occurred during @Remote
operation. (This error occurs only
during @Remote operation.)
651 C @Remote communication error 2
An illegal dial-up to the service
center was attempted by
@Remote.
D Engine startup error
The MCU failed to respond
670
within the prescribed time
when the machine was turned
on.
B286/B289
! RAM backup battery
exhausted
! Counter device defective
! Device control board defective
! Device control board backup
battery defective
! Modem line disconnected
! Modem board missing or not properly
installed
! Software bug
! Connections between MCU and
controller board are loose,
disconnected, or damaged
! MCU defective
! Controller board defective
4-12 SM