Self-Tests 4Xx: A8 Output Self-Test Errors (E8267D Only) - Keysight Technologies E8257D Service Manual

Troubleshooting
Troubleshooting Assembly–Level Problems
301 Tuning Voltage
1. Replace the A7 Reference.
Self–Tests 4xx: A8 Output Self–Test Errors (E8267D only)
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.
Supply Vol tage
(Vdc)
+15
−15
+5.2
+9
−6
400 Lowband Ground and PTAT Test
— Replace A8 Output.
E8257D/67D, E8663D PSG Signal Generators Service Guide
Connector Pins Minimum Value
(Vdc)
P52–6, 21 +14.55
P52–2, 17 −15.45
P52–14, 29 +5.04
P52–5, 20 +8.82
P52–3, 18
−6.12
Maximum Value Origin
(Vdc)
+15.45 Main Supply
−14.55 Main Supply
+5.36 Main Supply
+9.18 YIG Driver
YIG Driver
−5.88
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