No-beep error messages No-beep Error Messages
FRU/Action in Sequence
No beep, power-on indicator turns off and LCD is blank.
• Test the power source (battery pack and power adapter). See “Testing the power system” on page 138. • Make sure that every connector is connected tightly and correctly. • Reconnect the SO-DIMM. • Test or replace the LED board. • Test or replace the system board.
No beep, power-on indicator turns on and LCD is blank.
• Test the power source (battery pack and power adapter). See “Testing the power system” on page 138. • Reconnect the LCD connector • Check the hard disk drive. • Check the LCD inverter ID. • Check the LCD cable. • Test or replace the LCD inverter. • Test or replace the LCD. • Test or replace the system board.
No beep, power-on indicator turns on and LCD is blank. But you can see POST on an external CRT.
• • • • • •
No beep, power-on indicator turns on and a blinking cursor shown on LCD during POST.
• Make sure that every connector is connected tightly and correctly. • Test or replace the system board.
No beep during POST but system runs correctly.
• Test or replace the speaker. • Test or replace the system board.
Chapter 4: Troubleshooting
Reconnect the LCD connectors. Check the LCD inverter ID. Check the LCD cable. Test or replace the LCD inverter. Test or replace the LCD. Test or replace the system board.
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