Troubleshooting
Getting Started with Troubleshooting
1-3
Getting Started with Troubleshooting
Determine the starting point in Table1-1 to begin troubleshooting.
• Problems should be worked on in the order they are presented in this table.
• Overviews of Self-Test, Synthesis Loop, RF Path and Instrument are found in this chapter. The
information in these overviews may help the reader better understand how the signal generator operates
and the function of each assembly. Each overview is also intended to be used to troubleshoot the signal
generator.
To Run Self-Test
1. Press the Utility key.
2. Press the Instrument Info/Help Mode softkey.
3. Press the Self Test softkey.
4. Press the Run Complete Self Test softkey.
Table 1-1
If able to run self-test... Go to this section...
Run Self-Test “To Run Self-Test” on page 1-3 and refer to
“Self-Test Failures and Related Troubleshooting” on page 1-15.
If unable to run self-test, check... Go to this section...
Power supply failures
Temperature-related power supply failures
A18 CPU turn-on failures
Front panel display or keyboard operations
“ILT-1 Power Supply Failure and Self-Test” on page 1-4
“ILT-2 Temperature Related Power Supply Failure” on page 1-5
“ILT-3 A18 CPU Turn-On Test” on page 1-6
“ILT4 Front Panel Display Troubleshooting” on page 1-9
If other conditions occur... Go to this section...
Unlocked Conditions
Unleveled Conditions
Adjustment Problems
Performance Test Problems
“Troubleshooting Unlocks” on page 1-46
“Troubleshooting Unlevels” on page 1-49
“Troubleshooting Adjustment Problems” on page 1-53
“Troubleshooting Performance Test Problems” on page 1-56
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