118
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 a non-defective FRU:
Computer Shutsdown 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
130) 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 209.
Start
Check
AC/Battery
Swap AC/Battery
try
NG
OK
Swap M/B
Summary of Contents for Aspire 4738
Page 6: ...VI ...
Page 10: ...X Table of Contents ...
Page 109: ...Chapter 3 101 5 Connect the fan cable as shown ...
Page 123: ...Chapter 3 115 4 Press down as indicated to secure the keyboard in place ...
Page 146: ...138 Chapter 4 ...
Page 150: ...142 Chapter 5 Clear CMOS Jumper Item Description J1 J2 Clear CMOS Jumper ...
Page 152: ...144 Chapter 5 ...
Page 167: ...Chapter 6 159 ...
Page 216: ...208 Appendix B ...
Page 218: ...210 Appendix C ...