Chapter 4 99
Error Message List
No beep Error Messages FRU/Action in Sequence
No beep, power-on indicator turns off and
LCD is blank.
Power source (battery pack and power adapter). See “Power
System Check” on page 95..
Ensure every connector is connected tightly and correctly.
Reconnect the DIMM.
LED board.
Mainboard.
No beep, power-on indicator turns on and
LCD is blank.
Power source (battery pack and power adapter). See “Power
System Check” on page 95..
Reconnect the LCD connector
Hard disk drive
LCD inverter ID
LCD cable
LCD Inverter
LCD
Mainboard
No beep, power-on indicator turns on and
LCD is blank. But you can see POST on an
external CRT.
Reconnect the LCD connectors.
LCD inverter ID
LCD cable
LCD inverter
LCD
Mainboard
No beep, power-on indicator turns on and a
blinking cursor shown on LCD during
POST.
Ensure every connector is connected tightly and correctly.
Mainboard
No beep during POST but system runs
correctly.
Speaker
Mainboard
SG_TM4720_4320_Book.book Page 99 Friday, April 20, 2007 11:14 AM
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