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001
1. Power-off the computer and all external devices.
2. Make sure that all external cables and power cords are properly connected.
3. Remove the cover and make sure that all cables to the system board are seated
properly.
4. Set all monitor controls to the middle position.
5. Power-on all external devices.
6. Power-on the computer.
7. Check the power-on indicator and listen for the fan(s).
DID
THE COMPUTER POWER-ON AND STAY ON?
YES, continue to 002.
NO, go to “Undetermined problems” on page 109.
002
DID YOU HEAR ANY BEEPS WHEN POWERING ON?
YES, go to “Beep symptoms” on page 89.
NO, continue to 003.
003
IS ANYTHING DISPLAYED ON THE MONITOR SCREEN?
YES, continue to 004.
NO, make sure that the monitor is working properly. Most monitors have some
sort of diagnostic self test. Refer to the manual for your monitor.
If you determine that the monitor is working properly, make sure it is properly
connected to the computer. Otherwise, go to “Undetermined problems” on page
109.
004
DID YOU RECEIVE THE EXPECTED RESPONSE?
YES, continue to 005.
NO, proceed to 006.
005
Run the Diagnostic programs. If necessary, refer to Chapter 4, “IBM Enhanced
Diagnostics,” on page 15.
v If you receive an error, replace the part that the diagnostic program calls out or
go to Chapter 7, “Symptom-to-FRU Index,” on page 69.
v If an installed device is not recognized by the diagnostics program, that device
might be defective.
12 Hardware Maintenance Manual