RF Vector Network Analyzer
N9923AN
Front Panel Group Troubleshooting
If no sound:
• Enter a value of just "." (decimal point) for a frequency.
A double beep should occur. Plug headphones into the unit if there is no sound from the
internal speaker. The internal speaker is disabled when headphones are plugged in.
If the display is dark (no backlight):
• Press: Mode > System(7) > the left-most soft key > the next to the left-most soft key >
press the up arrow many times.
This should bring the display brightness setting to a viewable level.
Service Guide N9923-90005
Troubleshooting
Front Panel Group Troubleshooting
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