Description: Exposure Lamp Error
The standard white level was not detected properly when scanning the white plate.
Causes: • Exposure lamp defective
• Lamp stabilizer defective
• Exposure lamp connector defective
• Scanner motor control unit (MCU board) defective
• SBU board defective
• Dirty standard white plate
• Dirty scanner mirror or scanner mirror or lens block out of position
Code: SC120
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
• Poor connection between HP sensor and MCU board
• Scanner motor control unit (MCU board) defective
• Scanner wire, timing belt, pulleys, or carriage out of position
• Scanner motor defective
• Poor connection or defective harness between MCU board and scanner motor
Code: SC121
Description: Scanner Home Position Error 2
Scanner home position sensor does not detect ON.
Causes: • Scanner home position sensor defective
• Poor connection between MCU board and scanner home position sensor
• Harness between MCU board and sensor defective
• MCU board defective
• Scanner wire, timing belt, pulleys, or carriage out of position
• Scanner drive motor defective
• Harness between MCU board and scanner motor disconnected
Code: SC124
Description: Encoder Signal Error
The scanner motor encoder connector is not set correctly, or the encoder signal was not input.
Causes: • Scanner motor encoder connector disconnected
• Scanner motor lead connector disconnected
• Scanner motor defective
• MCU board defective (scanner motor control unit)
• Scanner wire, timing belt, pulleys, or carriage installation incorrect
• Power supply connector disconnected (+38V +-24V)
• Power supply unit (PSU-E board) defective
Code: SC125
Description: Scanner Motor Error 1
Scanner motor stopped before feedback from scanner HP sensor detected, or motor speed too slow when detected at scanner HP sensor.
Causes: • Scanner motor defective (high torque)
• Overload on scanner drive mechanism
• MCU board defective (scanner motor unit control)