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ESG Family Signal Generators Initial Troubleshooting and RF Block Diagrams
Initial Troubleshooting
Service Guide 1-15
Step 4: Visually Check the Individual Voltage Supplies
1. Unplug the signal generator and remove the instrument cover. Refer to Chapter 5,
“Assembly Replacement,” for removal instructions.
2. Expose the motherboard by removing the top cover. It is secured by 11 screws.
3. Plug in the signal generator and allow it to warm up for at least five minutes.
4. If possible, clear the error queue(s) of messages. Press
Utility > Error Info > Clear Error
Queue(s)
.
5. On the motherboard, locate the 10 LEDs that correspond to the individual voltage
supplies (see Figure 1-3). Verify that all the LEDs are lit. If one or more LEDs are off,
proceed to “Step 6: Isolate the Failed Assembly”.
Figure 1-3 LED Locations on the Motherboard