Ricoh D009 Service Manual page 232

SC Tables: SC1xx
Scanner adjustment error
During the SBU adjustment, the machine detects that the white level read
from the white plate or paper is out of range. (SP4015)
145 C
Exposure lamp defective
Dirty white plate
Incorrect position or width of white plate scanning (SP4015)
BICU board defective
SBU board defective
IPU error
The error result of self-diagnostic by the ASIC on the IPU is detected.
161 D
Defective IPU
Defective connection between IPU and SBU
Copy Data Security Unit error
The copy data security board is not detected when the copy data security
function is set "ON" with the initial setting.
165 D
A device check error occurs when the copy data security function is set to
"ON" with the initial setting.
Incorrect installation of the copy data security board
Defective copy data security board
D009/D011/D012/D013 4-6 SM