Description: Exposure Lamp Error
The standard white level was not detected properly when scanning the white plate.
Causes: • 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 (SP4015)
Code: 120
Description: Scanner home position error 1
The scanner home position sensor does not detect the off condition during initialization or copying.
Causes: • Scanner home position sensor defective
• Scanner drive motor defective
• Scanner home position sensor connector defective
• Scanner drive motor connector defective
• BICU board defective
Code: 121
Description: Scanner home position error 2
The scanner home position sensor does not detect the on condition during initialization or copying.
Causes: • Scanner home position sensor defective
• Scanner drive motor defective
• Scanner home position sensor connector defective
• Scanner drive motor connector defective
• BICU board defective
Code: 143
Description: SBU white/black level correction error
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.
Causes: • Exposure lamp defective
• Dirty white plate
• Incorrect position or width of white plate scanning (SP4015)
• BICU board defective
• SBU board defective
Code: 144
Description: Communication Error between BICU and SBU
The BICU board cannot detect the SBU connect signal.
Causes: • 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
Code: 145
Description: Automatic SBU adjustment error
During the automatic SBU adjustment, the machine detects that the white level read from the white plate or paper is out of range. (SP4015)
Causes: • Exposure lamp defective
• Dirty white plate
• Incorrect position or width of white plate scanning (SP4015)
• BICU board defective
• SBU board defective