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Troubleshooting
Troubleshooting Assembly–Level Problems
Self–Tests 10xx: A7 Reference (Option UNR) Self–Test Errors
Before proceeding to the reported self–test error code, check the following voltages. If
any voltages are out of specification troubleshoot the supply problem first.
1000 Power Supply
• Replace the A7 Reference.
Supply Voltage
(Vdc)
Connector Pins Minimum Value
(Vdc)
Maximum Value
(Vdc)
Origin
+15 P42-6, 21 +14.55 +15.45 Main Supply
–15
P42-2, 17
–14.55 –15.45
Main Supply
+9 P42-5, 20 +8.82 +9.18 YIG Driver
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