Ricoh D017 Service Manual page 381

Service Call Conditions
SBU connection error
144-1 D
Connection to the SBU could not be confirmed, possibly due to a defect in
the BCU detection board
SBU serial communication error
144-2 D
Poor SBU power supply caused by SIO, or BCU detection board defective.
SBU GASBU reset error
144-3 D
SBU defective, BCU detection circuit defective.
SBU version error
144-4 D
SBU defective, BCU detection circuit defective.
Harness connection at IPU, BCU, SBU loose, broken, defective.
Spurious electrical noise on power supply line
IPU defective
BCU defective
SBU defective
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. (SP4605)
145 C Exposure lamp defective
Dirty white plate
Incorrect position or width of white plate scanning (SP4605)
BICU board defective
SBU board defective
IPU Error
The self-diagnostic test detected an
161 D
error at the IPU at power on, or after
the machine returned from energy
save mode.
D017/D018/D019/D020/D084/D085
Harness between SBU and
IPU loose or broken
IPU defective
SBU defective
3-6 SM Appendix