SERVICE CALL CONDITIONS
B121 Series/B259 Series 4-2 SM
4.1.2 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 ( SP4-015)
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 correct the black level.
The automatic SBU adjustment has
failed to correct the white level twenty
times consecutively.
• Exposure lamp defective
• Dirty white plate
• Incorrect position or width of white
plate scanning ( SP4-015)
• BICU board defective
• SBU board defective
Communication Error between BICU and SBU 144 B
The BICU board cannot detect the SBU
connect signal.
• The flat cable between the BICU
board and the SBU has a poor
connection
• The flat cable between the BICU
board and the SBU is damaged
• BICU board defective
• SBU defective
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