Service manual

5 123
Power Supply Troubleshooting
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5. Power Supply Troubleshooting
Figure 5-4 A9 Two LEDs Location
Disconnect Wire from A3 P11
Turn the analyzer power off. Disconnect the wire from the A3 P11 and turn the analyzer
power on. The A3 P11 location is shown in
Figure 5-5.
• If the one or two LEDs are still off, continue with the next step, Disconnect RF cable
“M” from A2.
• If the two LEDs go on, replace the A3 assembly.
Disconnect RF cable “M” from A2 Hc Amp assembly
Turn the analyzer power off. Disconnect the cable “M” from the A2 Hc Amp assembly and
turn the analyzer power on. The RF cable “M” location is shown in
Figure 5-5.
• If the one or two LEDs are still off, replace the A9 assembly.
• If the two LEDs go on, replace the A2 Hc Amp assembly.