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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
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 1820PT Series
Страница 6: ...vi ...
Страница 10: ...x Table of Contents ...
Страница 13: ...Chapter 1 3 System Block Diagram ...
Страница 32: ...22 Chapter 1 ...
Страница 48: ...38 Chapter 2 ...
Страница 60: ...50 Chapter 3 4 Remove the one 1 screw 5 Remove the 3G module Step Screw Quantity Screw Type 3G Module M2 3 1 ...
Страница 64: ...54 Chapter 3 4 Unlock the FPC 5 Remove the FPC and keyboard ...
Страница 66: ...56 Chapter 3 4 Remove the hinge cap 5 Remove the hinge bezel ...
Страница 70: ...60 Chapter 3 10 Pull the upper cover away ...
Страница 80: ...70 Chapter 3 6 Remove the two 2 screws 7 Remove the LED board Step Screw Quantity Screw Type LED Board M2 4 2 ...
Страница 85: ...Chapter 3 75 11 Lift up the main board from the inside edge and pull away 12 Remove the CRT cable ...
Страница 94: ...84 Chapter 3 7 Pry up the bezel top edge and remove ...
Страница 100: ...90 Chapter 3 6 Pull up the LCD cable from the adhesive 7 Pull the touchscreen cable from the adhesive ...
Страница 105: ...Chapter 3 95 6 Remove the antenna cable from the retention guide hooks 7 Peel the antenna foil off the cover ...
Страница 119: ...Chapter 3 109 7 Insert the stylus ...
Страница 127: ...Chapter 3 117 7 Connect the touchscreen cable Replacing the CRT Board 1 Connect the CRT cable 2 Turn the CRT board over ...
Страница 134: ...124 Chapter 3 6 Lock the main board connector 7 Replace the I O cable in the IO board 8 Lock the I O board connector ...
Страница 142: ...132 Chapter 3 2 Replace the hinge cap 3 Replace the three 3 screws Step Screw Quantity Screw Type Hinge Covers M2 3 3 ...
Страница 144: ...134 Chapter 3 4 Press down the keyboard top edge Replacing the 3G Module 1 Replace the 3G module ...
Страница 148: ...138 Chapter 3 2 Replace the HDD in the bay 3 Adhere the black tape 4 Replace the HDD FPC ...
Страница 149: ...Chapter 3 139 5 Lock the HDD FPC Replacing the Module Cover 1 Insert the side of the module cover into the slots ...
Страница 150: ...140 Chapter 3 2 Replace the module pressing firmly around the edges 3 Tighten the six 6 captive screws ...
Страница 152: ...142 Chapter 3 3 Lock the battery Replacing the Dummy Card 1 Insert the dummy card into the slot ...
Страница 202: ...192 Appendix A ...
Страница 212: ...202 ...
Страница 215: ...205 ...
Страница 216: ...206 ...