SC Tables
SM 6-3 D115/D116
Trouble-
shooting
No.
Definition
Symptom Possible Cause
121 B
Scanner home position error 2
The scanner home position sensor
does not detect the scanner coming
back to the home position.
Defective scanner home
position sensor
Defective scanner drive motor
Defective scanner home
position sensor connector
Defective scanner drive motor
connector
Defective BICU board
141 B
SBU black level correction error
The automatic SBU adjustment
has failed to correct the black
level three times at the
pre-offset adjustment.
The automatic SBU adjustment
has failed to correct the black
level ten times at the PGA
adjustment.
The automatic SBU adjustment
has failed to correct the black
level ten times at the offset
adjustment.
Defective SBU board
142 B
SBU white/black level correction error
The automatic SBU adjustment has
failed to correct the white level ten
times at the PGA adjustment.
Defective exposure lamp
Unclean white plate
Incorrect position or width of
white plate scanning (
SP4-015)
Defective SBU board