Troubleshooting
Troubleshooting Assembly Level Problems
1-26
Self-Tests 3xx: A7 Reference (Standard) Self-Test Errors
Figure 1-3
Before proceeding to the reported self-test error code, check the voltages in Table1-18. If any of
the voltages are out of specification troubleshoot the supply problem first.
300 1 GHz Detector
1. Check and remove any connection to the 10 MHz external reference on the rear panel.
2. If the signal generator continues to fail self-test, replace the A7 Reference.
301 Tuning Voltage
1. Replace the A7 Reference.
Table 1-18
Supply
Voltage
(Vdc)
Connector
Pins
Minimum
Value
(Vdc)
Maximum
Value
(Vdc)
Origin
+32 P102-7 +31.04 +32.96 Main Supply
+15 P102-6, 21 +14.55 +15.45 Main Supply
-15 P102-2, 17 -14.55 -15.45 Main Supply
+5.2 P102-14, 29 +5.04 +5.37 Main Supply
+9 P102-5, 20 +8.82 +9.18 YIG Driver
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