140
Chapter 4
Power On Issue
If the system doesn’t power on, perform the following actions one at a time to correct the problem. Do not
replace non-defective FRUs:
Computer Shuts down Intermittently
If the system powers off at intervals, perform the following actions one at a time to correct the problem.
1.
Check the power cable is properly connected to the computer and the electrical outlet.
2.
Remove any extension cables between the computer and the outlet.
3.
Remove any surge protectors between the computer and the electrical outlet. Plug the computer directly
into a known good electrical outlet.
4.
Disconnect the power and open the casing to check the Thermal Unit (see “Thermal Unit Failure” on page
157) and fan airways are free of obstructions.
5.
Remove all external and non-essential hardware connected to the computer that are not necessary to
boot the computer to the failure point.
6.
Remove any recently installed software.
7.
If the Issue is still not resolved, see “Online Support Information” on page 207.
Start
Check
AC/Batt only
power on
Swap
AC/Battery
OK
NG
Check
Power/B
Whether OK
OK
Swap Power
SW/B
OK
NG
Swap M/B
Start
Check
AC/Batt only
power on
Swap
AC/Battery
OK
NG
Check
Power/B
Whether OK
OK
Swap Power
SW/B
OK
NG
Swap M/B
Summary of Contents for EasyNote LJ77
Page 6: ...VI...
Page 10: ...X Table of Contents Online Support Information 207 Index 209...
Page 15: ...Chapter 1 5 System Block Diagram...
Page 58: ...48 Chapter 2...
Page 71: ...Chapter 3 61 5 Remove the HDD from the carrier...
Page 85: ...Chapter 3 75 11 Carefully remove the LCD module from the chassis...
Page 94: ...84 Chapter 3 5 Lift the entire Speaker assembly clear of the Upper Cover...
Page 148: ...138 Chapter 3...
Page 178: ...168 Chapter 4...
Page 186: ...176 Chapter 5...
Page 199: ...Chapter 6 189...
Page 216: ...206 Appendix B...
Page 218: ...208 Appendix C...
Page 222: ...212...