Ricoh K-C3 - Page 127

B245/B276/B277/B268/B269 Service Manual 18-Jan-06
118
No.
Definition
Symptom Possible Cause
correct the black level.
The automatic SBU
adjustment has failed to
correct the white level
twenty times
consecutively.
 Incorrect position or width of white
plate scanning (
p.151)
 BICU board defective
 SBU board defective
Communication Error between BICU and SBU
144 B
The BICU board cannot
detect the SBU connect
signal.
 The flat cable between the BICU
board and the SBU has a poor
connection
 The flat cable between the BICU
board and the SBU is damaged
 BICU board defective
 SBU defective
Automatic SBU adjustment error
145 D
During the automatic SBU
adjustment, the machine
detects that the white level
read from the white plate
or paper is out of range.
(
p.151)
 Exposure lamp defective
 Dirty white plate
 Incorrect position or width of white
plate scanning (
p.151)
 BICU board defective
 SBU board defective
Image transfer error
193 B
Scanned images are not
transferred to the
controller memory within 1
minute.
 BICU board defective
 Controller board defective
Memory address error
198 B
The BICU board does not
receive memory
addresses from the
controller board.
 The firmware programs of the engine
and the controller do not match.
 BICU board defective
 Controller board defective
Charge roller current leak
302 B
A current leak signal for  Charge roller damaged