Acer eMachines eM250, Service Manual

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Chapter 4 119
Troubleshooting
Common Problems
Use the following procedure as a guide for computer problems.
NOTE: The diagnostic tests are intended to test only Acer products. Non-Acer products, prototype cards, or
modified options can give false errors and invalid system responses.
1. Obtain the failing symptoms in as much detail as possible.
2. Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating
the same operation.
3. Use the following table with the verified symptom to determine which page to go to.
4. If the Issue is still not resolved, see “Online Support Information” on page 181.
Symptoms (Verified) Go To
Power On Issue Page 120
No Display Issue Page 121
LCD Failure Page 123
Internal Keyboard Failure Page 123
TouchPad Failure Page 124
Internal Speaker Failure Page 125
Internal Microphone Failure Page 127
Rightside USB Failure Page 129
Wireless Function Failure Page 130
3G Function Failure Page 131
Switch Failure Page 132
Thermal Units Failure Page 133
Power Button Failure Page 133
External Mouse Failure Page 134
Other Functions Failure Page 134
Intermittent Failures Page 135
Undermined Failures Page 135
Chapter 4