630 Chapter12
Display/Power Supply Section
Blank Display
6. Press FREQUENCY, 1, GHz.
7. Allow the analyzer to warm up for at least 1 minute.
8. While observing the display, press
LINE to turn the spectrum
analyzer off. If a green flash appears on the display, the CRT is
probably working properly; troubleshoot either the A2 controller or
the A17 CRT driver.
9. If a flash does not appear on the display, the A2 controller, A6A1 HV
module, A17 CRT driver, or A18V1 CRT might be at fault.
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