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If the Red LED of the Al6 is On
If the red LED is on or flashing, the power supply is shutting down. Use the
following procedures to determine which assembly is causing the problem.
Check the A8 Post Regulator
1. Switch off the analyzer.
2. Disconnect the cable A15Wl from the A8 post regulator. (See F'igure 5-5.)
3.
Switch on the analyzer and observe the red LED on A15.
If the red LED goes out, the problem is probably the A8 post regulator.
q
Continue to "Verify the Al5 Preregulator" to ilrst verify that the inputs to
If the red LED is still on, the problem is probably the Al5 preregulator, or
q
one of the assemblies obtaining power from it. Continue with "Check for a
Power Supply Troubleshooting 6-8
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Table of Contents
Troubleshooting
