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Chapter 4
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.
Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU).
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 On
Issue” on page 192.):
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:
•
Non-Acer devices
•
Printer, mouse, and other external devices
•
Battery pack
•
Hard disk drive
•
DIMM
•
CD-ROM/Diskette drive Module
•
PC Cards
4.
Power-on the computer.
5.
Determine if the problem has changed.
6.
If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7.
If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU:
•
System board
•
LCD assembly
Summary of Contents for Aspire 8940 Series
Page 6: ...VI ...
Page 58: ...48 Chapter 2 ...
Page 74: ...64 Chapter 3 4 Remove the TV Tuner as shown ...
Page 76: ...66 Chapter 3 4 Detach the WLAN Module from the WLAN socket ...
Page 93: ...Chapter 3 83 5 Lift the board clear of the Upper Cover ...
Page 96: ...86 Chapter 3 5 Lift the Media Board clear of the Upper Cover ...
Page 102: ...92 Chapter 3 8 Lift the board clear of the Upper Cover ...
Page 105: ...Chapter 3 95 5 Remove the Bluetooth Board from the Lower Cover ...
Page 114: ...104 Chapter 3 4 Using both hands lift the Subwoofer clear of the Lower Cover ...
Page 151: ...Chapter 3 141 3 Press down around the perimeter of the bezel to secure it in place ...
Page 169: ...Chapter 3 159 4 Connect the Bluetooth cable to the Mainboard ...
Page 180: ...170 Chapter 3 4 Connect the Volume Control FFC to the Media Board and close the locking latch ...
Page 198: ...188 Chapter 3 2 Tighten the seven captive screws in the Lower Door ...
Page 200: ...190 Chapter 3 ...
Page 233: ...Chapter 6 223 ...
Page 274: ...264 Appendix B ...
Page 276: ...266 Appendix C ...
Page 280: ...270 ...