4-18
Troubleshooting
Other Functions Failure
0
Check if drives are functioning correctly.
Check if external modules are functioning correctly.
Change mainboard to check if current one is defective.
Intermittent Problems
0
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, perform 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 an error is detected, replace the FRU. Rerun the test to verify that there are no more
errors.
Undetermined Problems
0
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.
Perform the following procedures to isolate the failing FRU (do not isolate non-defective FRU).
NOTE:
NOTE
:
Verify that all attached devices are supported by the computer.
NOTE:
NOTE
:
Verify that the power supply being used at the time of the failure is operating correctly.
(Refer to
Power On Issues
).
1.
Remove power from the computer.
2.
Visually check the components 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.
Apply power to the computer.
5.
Determine if the problem has changed.
6.
If the problem does not recur, connect the removed devices one at a time until failing FRU
is found.
7.
If the problem remains, replace the following FRUs one at a time. Do not replace a
non-defective FRU:
System board
LCD assembly
Summary of Contents for Aspire 7750Z
Page 1: ...Aspire 7750 7750G SERVICEGUIDE...
Page 10: ...x...
Page 11: ...CHAPTER 1 Hardware Specification...
Page 14: ...1 4...
Page 56: ...1 46 Hardware Specifications and Configurations...
Page 57: ...CHAPTER 2 System Utilities...
Page 79: ...CHAPTER 3 Machine Maintenance...
Page 82: ...3 4...
Page 122: ...3 44 Machine Maintenance Procedures...
Page 123: ...CHAPTER 4 Troubleshooting...
Page 149: ...CHAPTER 5 Jumper and Connector Locations...
Page 156: ...5 8 Jumper and Connector Locations...
Page 157: ...CHAPTER 6 FRU List...
Page 158: ...6 2 Exploded Diagrams 6 4 FRU List 6 6 Screw List 6 23...
Page 180: ...6 24 FRU Field Replaceable Unit List...
Page 181: ...CHAPTER 7 Model Definition and Configuration...
Page 182: ...7 2 Aspire 7750 7750G 7 3...
Page 253: ...CHAPTER 8 Test Compatible Components...
Page 254: ...8 2 Microsoft Windows 7 Environment Test 8 4...
Page 270: ...8 18 Test Compatible Components...
Page 271: ...CHAPTER 9 Online Support Information...
Page 272: ...9 2 Introduction 9 3...
Page 274: ...9 4 Online Support Information...