Service manual

Service Call Conditions
SM 6-5 M052/M053/M054
Trouble-
shooting
144 D
SBU connection error
Connection to the SBU could not be confirmed, possibly due to a defect in
the BICU detection port.
 Harness connection at BICU or SBU loose, broken, defective
 BICU defective
 SBU defective
161
-001
D
IPU Error 1
The self-diagnostic test detected an error at the BICU at power on, or after
the machine returned from energy save mode.
 Harness between SBU and BICU loose or broken
 BICU defective
 SBU defective
161
-002
D
IPU Error 2
The machine does not detect RI answer from BICU.
 Harness between SBU and BICU loose or broken
 BICU defective
 SBU defective
165 B
Copy Data Security Unit error
An error occurred when the machine attempted to recognize the Copy
Data Security Unit board.
 Check installation of Copy Data Security (CDS) Unit
 CDS unit not correct type for the machine
 CDS unit defective