41F64:Gamma data Read /Write errorAF 00 00 00 1.Gamma data couldn't beproperly sent to CONTROLBoard via USB interface.1. Restart the scanner, and then execute"Carriage Drive" in Sec. 9.3.5 to checkwhether the same phenomenon isreproduced.2. Re-connect the USB cable to thescanner, and then restart the scanner toconfirm whether the same error occurs.3. Replace the USB cable.2. CONTROL Board does notwork properly.1. Restart the scanner to confirm whetherthe same error occurs.2. Check the soldering condition of ASIC,JP5, and their surrounding circuits onthe CONTROL Board.3. Replace the CONTROL Board.3. The power supply to thecircuit on the CONTROLBoard was interrupted.1. Re-connect the AC Adaptor to thescanner, and then restart the scanner toconfirm whether the same error occurs.2. Replace the AC Adaptor.F65:Lamp in theScanning Unitcannot be turned on.B2 00 00 00 1. Power (+24 V) is notproperly supplied to the LEDLamp included in theScanning Unit.1. Restart the scanner, and then execute"Carriage Drive" in Sec. 9.3.5 to checkwhether the same phenomenon isreproduced.2. Check the following connection andsoldering condition on each connector:(1) JP1 (CCD Board) to LED Lamp(2) CN1 (CCD Board) to CN2(CONTROL Board)(3) JP2 (CONTROL Board) to ACAdaptor3. Replace faulty parts.2. The Scanning Unit does notwork properly.1. Check the following connection andsoldering condition on each connector:→ JP1 (CCD Board) to LED Lamp2. Replace the Scanning Unit.3. CONTROL Board does notwork properly.1. Restart the scanner to confirm whetherthe same error occurs.2. Check the soldering condition of ASIC,JP5, and their surrounding circuits onthe CONTROL Board.3. Replace the CONTROL Board.4. The power supply to thecircuit on the CONTROLBoard was interrupted.1. Re-connect the AC Adaptor to thescanner, and then restart the scanner toconfirm whether the same error occurs.2. Replace the AC Adaptor.5. There was a USBcommunication errorbetween PC and CONTROLBoard.1. Re-connect the USB cable to thescanner, and then restart the scanner toconfirm whether the same error occurs.2. Replace the USB cableError Code Possible Cause Check Point RemarksClassificationCodeST1 ST2 ST3 ST4