Undetermined Problems - Acer AN515-51 Service Manual

Undetermined Problems

The diagnostic problems do not identify which adapter or device failed, which installed devices are
incorrect, whether a short circuit is suspected, or whether the system is inoperative.
NOTE:
Verify that all attached devices are supported by the computer.
•
Verify that the power supply being used at the time of the failure is operating correctly. (refer
•
to Power On Issues
Perform the following procedures to isolate the failing FRU:
Remove power from the computer.
1.
Visually check FRUs for damage. If any problems are found, replace the FRU.
2.
Remove or disconnect all of the following devices:
3.
• Non-Acer devices
• Printer, mouse, and other external devices
• Hard disk drive
• DIMM
• CD-ROM/Diskette drive Module
• PC Cards
Apply power to the computer.
4.
Determine if the problem has changed.
5.
If the problem does not recur, connect the removed devices until failing FRU is found.
6.
If the problem remains, replace the following:
7.
• System board
• LCD assembly
Troubleshooting
on page 4-3).
4-19