Memory errors might stop system operation, show error messages on the screen, or hang the system.
Use the following procedure to isolate memory problems:
1.Turn off the computer and remove any installed DIMM from its slot.
2.Boot from the diagnostics diskette and start the program.
3.Go toDiagnostics on the main menu and select
Memory Test. If an error appears, replace the system board.
4. Turn off the computer | and reinstall the DIMM; then | |||||||
turn on the | computer. | Verify | the memory | size; | then | |||
test | the memory. | If | an | error | appears, | replace | the | |
DIMM. |
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Note: Make | sure | that | the | DIMM | is | properly installed | into | |
the connector. A loose connection can cause an |
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error. |
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Modem Board Checkout
Do the following to isolate the problem to the system internal modem:
1.Boot from the diagnostics diskette and start the program.
2. Go | toDiagnostics | on the main menu and select |
Other | Devices . |
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3.Follow the description in the window.
4.If the test detects a modem problem, replace the modem card.
Power | System | Checkout |
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To verify the symptom of | the problem power on the com- | ||
puter | using | each of the | following power sources: |
1.Remove the battery ASM.
2.Connect the AC Adapter and check that power is sup- plied.
3.Disconnect the AC Adapter and install the charged battery ASM; then check that power is supplied by the battery ASM.
If you suspect a power problem, refer to the appropriate power supply check listed below:
Ÿ “Checking the AC Adapter” on page 11
Ÿ “Checking the Operational Charging” on page 11
Ÿ“Checking the Battery ASM” on page 11
10 ThinkPad 240
