B245/B276/B277/B268/B269 Service Manual 18-Jan-06
117
SC Code Descriptions
No.
Definition
Symptom Possible Cause
Exposure Lamp Error
101 B
The standard white level
was not detected properly
when scanning the white
plate.
Exposure lamp defective
Exposure lamp stabilizer defective
Exposure lamp connector defective
Dirty scanner mirror or scanner mirror
out of position
SBU board defective
SBU connector defective
Lens block out of position
Incorrect position or width of white
plate scanning (
p.151)
Scanner home position error 1
120 B
The scanner home
position sensor does not
detect the off condition
during initialization or
copying.
Scanner home position sensor
defective
Scanner drive motor defective
Scanner home position sensor
connector defective
Scanner drive motor connector
defective
BICU board defective
Scanner home position error 2
121 B
The scanner home
position sensor does not
detect the on condition
during initialization or
copying.
Scanner home position sensor
defective
Scanner drive motor defective
Scanner home position sensor
connector defective
Scanner drive motor connector
defective
BICU board defective
SBU white/black level correction error
143 D
The automatic SBU
adjustment has failed to
Exposure lamp defective
Dirty white plate
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