Power On Issues - Acer AO756 Service Manual

Power On Issues

If the system does not power on, perform the following:
Computer Shuts Down Intermittently
If the system powers off at intervals, perform the following.
Makes sure the power cable is properly connected to the computer and the electrical outlet.
1.
Remove all extension cables between the computer and the outlet.
2.
Remove all surge protectors between the computer and the electrical outlet. Plug the computer
3.
directly into a known serviceable electrical outlet.
Disconnect the power and open the casing to check the Thermal Unit (See
4.
Failure on page 4-15) and fan airways are free of obstructions.
Remove all external and non-essential hardware connected to the computer that are not
5.
necessary to boot the computer to the failure point.
Remove any recently installed software.
6.
If the issue is still not resolved, refer to
7.
4-3
Start
Check
AC/Batt only
power on
Check Power/B
Whether OK
OK
Swap M/B
Figure 4:1. Power On Issues
OK
NG
Swap AC/Battery
OK
NG
Swap Power SW/B
Online Support Information
Unit Thermal
on page 8-2.
Troubleshooting