Service Guide 6-9
8719ET/20ET/22ET Digital Control Troubleshooting
8719ES/20ES/22ES Troubleshooting the GSP (A19) and the Display (A18)
RF Network Analyzers
Troubleshooting the GSP (A19) and the Display (A18)
Measure the Supply Voltages Applied to the GSP (A19)
Measure the power supply voltages at the GSP (A19) assembly that come from the
motherboard (A17) assembly. Unplug the wire harness (J3) from the back of the GSP
interface. Check pins 2 and 3 for +5.16 ±0.1 V (see Figure 6-4).
If the voltages are incorrect, refer to Chapter 5 , “Power Supply Troubleshooting.”
Figure 6-4 GSP (A19) Voltages
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