
156
Chapter 4
Intermittent Problems
Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a
hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement
should be considered only when a recurring problem exists.
When analyzing an intermittent problem, do the following:
1.
Run the advanced diagnostic test for the system board in loop mode at least 10 times.
2.
If no error is detected, do not replace any FRU.
3.
If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors.
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 146.):
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
Содержание Aspire 5820T Series
Страница 6: ...VI ...
Страница 10: ...X Table of Contents ...
Страница 48: ...38 Chapter 2 ...
Страница 57: ...Chapter 3 47 4 Lift the base door out and away ...
Страница 62: ...52 Chapter 3 5 Pull the WLAN module out and away ...
Страница 64: ...54 Chapter 3 5 Pull the 3G module out and away ...
Страница 72: ...62 Chapter 3 9 Flip the keyboard over 10 Detach the keyboard FPC a Unlock the FPC b Pull the keyboard away a b ...
Страница 78: ...68 Chapter 3 4 Unlock and disconnect the switch board FFC ...
Страница 80: ...70 Chapter 3 4 Lift the power board away ...
Страница 85: ...Chapter 3 75 14 Lift the LCD module out of the assembly ...
Страница 87: ...Chapter 3 77 4 Lift away the I O board 5 Unlock and remove the I O board FFC from the mainboard ...
Страница 98: ...88 Chapter 3 Right Hinge Disassembly M2 5 3 2 86 PTN07 003 Step Screw Quantity Part No ...
Страница 100: ...90 Chapter 3 4 Pry open the bottom corners and along the bottom edge 5 Lift the bezel off the module ...
Страница 104: ...94 Chapter 3 7 Disconnect the FPC cable ...
Страница 107: ...Chapter 3 97 8 Remove the cable from the retention guides 9 Pry the antenna off the casing ...
Страница 112: ...102 Chapter 3 7 Lay the cables along the retention guides ...
Страница 118: ...108 Chapter 3 3 Press down on the bezel edge working simultaneously around the edges to the bottom ...
Страница 123: ...Chapter 3 113 2 Using a flat bladed screw driver rotate the CPU locking screw 180 clockwise to secure the CPU in place ...
Страница 127: ...Chapter 3 117 4 Connect and lock the I O card FFC to the mainboard ...
Страница 129: ...Chapter 3 119 4 Connect the Bluetooth module cable to the main board ...
Страница 133: ...Chapter 3 123 10 Press the LVDS connector left and right adhesive tabs down onto the mainboard ...
Страница 139: ...Chapter 3 129 7 Connect and lock the button board FFC ...
Страница 147: ...Chapter 3 137 4 Grasp the tab and slide the HDD firmly into the docking connector ...
Страница 150: ...140 Chapter 3 4 Push the ODD completely into the bay until flush with the lower cover ...
Страница 153: ...Chapter 3 143 Replace the Dummy Card Push the dummy card into the slot until it clicks into place ...
Страница 154: ...144 Chapter 3 ...
Страница 172: ...162 Chapter 4 ...
Страница 176: ...166 Chapter 5 ...
Страница 190: ...180 Chapter 6 ...
Страница 260: ...250 Appendix A ...
Страница 266: ...256 ...