Undetermined problems – Acer 4715Z User Manual
Page 113
Chapter 4
103
Undetermined Problems
The diagnostic problems does 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.
NOTE: Verify that the power supply being used at the time of the failure is operating correctly. (See “Power
Follow procedures below to isolate the failing FRU. Do not isolate non-defective FRU.
1.
Power off the computer.
2.
Visually check them for damage. If any problems are found, replace the FRU.
3.
Remove or disconnect all of the following devices:
T
Non-Acer devices
T
Printer, mouse, and other external devices
T
Battery pack
T
Hard disk drive
T
DIMM
T
CD/DVD-ROM drive
T
PC cards
4.
Power on the computer.
5.
Determine if the problem has been resolved.
6.
If the problem does not recur, reconnect the removed devices one at a time until you find the failed FRU.
7.
If the problem persists, replace the following FRU one at a time. Do not replace a non-defective FRU.
T
System board
T
LCD assembly