Chapter 4 63Error Message ListNo beep Error Messages FRU/Action in SequenceNo beep, power-on indicator turns off and LCD isblank.Power source (battery pack and power adapter). See “PowerSystem Check” on page 57.Ensure every connector is connected tightly and correctly.Reconnect the DIMM.LED board.System board.No beep, power-on indicator turns on and LCD isblank.Power source (battery pack and power adapter). See “PowerSystem Check” on page 57.Reconnect the LCD connectorHard disk driveLCD inverter IDLCD cableLCD InverterLCDSystem boardNo beep, power-on indicator turns on and LCD isblank. But you can see POST on an externalCRT.Reconnect the LCD connectors.LCD inverter IDLCD cableLCD inverterLCDSystem boardNo beep, power-on indicator turns on and ablinking cursor shown on LCD during POST.Ensure every connector is connected tightly and correctly.System boardNo beep during POST but system runs correctly. SpeakerSystem board