Keysight Technologies Option 503 Service Manual page 66

Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
If yes:
If not:
4. Connect an external VGA monitor to the rear panel display output.
If yes:
If not:
66
Are all of the power supply voltages at the proper level?
Proceed to step
After verifying that the connections between the A6 Power Supply,
the A7 Midplane board, and the A8 Motherboard are all
mechanically and electrically secure, replace the A6 Power Supply
assembly.
Does the external monitor display the correct information?
Proceed to the "Troubleshooting a Blank Display"
chapter.
Replace the A4 Processor Board assembly.
4.
N9030A PXA Signal Analyzer Service Guide
section in this