Acer Aspire 9100 Series, Service Manual

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Chapter 4 62
3. Replace the main board.
The following auxiliary input devices are supported by this computer:
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Embedded Numeric Keypad
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External keyboard
If any of these devices do not work, reconnect the cable connector and repeat the failing operation.
Memory Check
Memory errors might stop system operations, show error messages on the screen, or hang the system.
Currently, we do not provide memory test program. However, if you need to check memory but have no testing
program or diagonositc utility at hand, please go to http://www.passmark.com to download the shareware
“BurnIn Test V.3.0”. You may test the memory with this program under Window XP environment.
NOTE: Make sure that the DIMM is fully installed into the connector. A loose connection can cause an error.
Power System Check
To verify the symptom of the problem, power on the computer using each of the following power sources:
1. Remove the battery pack.
2. Connect the power adapter and check that power is supplied.
3. Disconnect the power adapter and install the charged battery pack; then check that power is supplied by
the battery pack.
If you suspect a power problem, see the appropriate power supply check in the following list:
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“Check the Power Adapter” on page 63
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“Check the Battery Pack” on page 64