Chapter 4
113
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 107..
Ensure every connector is connected tightly and correctly.
Reconnect the DIMM.
LED board.
System board.
No beep, power-on indicator turns on and
LCD is blank.
Power source (battery pack and power adapter). See “Power
System Check” on page 107..
Reconnect the LCD connector
Hard disk drive
LCD inverter ID
LCD cable
LCD Inverter
LCD
System board
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
System board
No beep, power-on indicator turns on and a
blinking cursor shown on LCD during
POST.
Ensure every connector is connected tightly and correctly.
System board
No beep during POST but system runs
correctly.
Speaker
System board
SG_Tangiz.book Page 113 Tuesday, July 10, 2007 11:01 AM
Summary of Contents for 7720
Page 6: ...VI ...
Page 10: ...X Table of Contents ...
Page 50: ...40 Chapter 1 ...
Page 67: ...Chapter 2 57 ...
Page 68: ...58 Chapter 2 ...
Page 114: ...104 Chapter 3 ...
Page 128: ...118 Chapter 4 F5h Boot to Mini DOS F6h Clear Huge Segment F7h Boot to Full DOS Code Beeps ...
Page 172: ...Appendix A 162 ...
Page 178: ...168 Appendix C ...