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Troubleshooting
Troubleshooting Assembly–Level Problems
Symptom: –5.2 V2, +1.95 VD, +1.8 VD LEDs not on
These supplies are generated by voltage regulators on the A31 Motherboard.
Troubleshoot by checking the following voltages at the A19 Power Supply:
• –7V, which is regulated down to –5.2 V2
• +3.4 VD, which is regulated down to +1.95 VD
• +2.6 VD, which is regulated down to +1.8 VD
If the supplies are good at the A19 Power Supply, replace the A31 Motherboard
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