4-6 Service Guide
Start Troubleshooting Here 8719ET/20ET/22ET
Step 1. Initial Observations 8719ES/20ES/22ES
RF Network Analyzers
If the Self-Test Failed
1. Check the AC line power to the analyzer.
2. Check the fuse (rating listed on rear panel, spare inside holder).
3. Check the line voltage setting (use small screwdriver to change).
4. If the problem persists, refer to “Step 4. Faulty Group Isolation” on page 4-13.