service manual or a device not supported by IBM diagnostic tests.
If all devices and adapters have been removed, and the problem remains:
1. Remove all cables from connectors on the system board except the
power supply and switch cables. See and “System Board Layout” on
page 5-2 for connector locations.
2. Remove all SIMMs from sockets.
3. Power-on the system unit and listen for any beeps.
4. If there are beeps, replace the system board and use the current
processor on the FRU system board.
5. If there are no beeps, replace the processor and use the current system
board.
6. If there are still no beeps, replace the current system board and use the
FRU processor obtained in step 5.
Check Procedures
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