Keywords: pdbi-trouble

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## Scan does not start

- Antenna(s) not tracking. WHY will tell you
- Subreflector(s) not ready. Check init button on STSA display. WHY will tell you.
- RDI missing. Use command WHY to check.
- CORREL missing. Use command WHY to check.
- CORREL_SPECTRA missing. Use command WHY to check.
- PHASER micro not properly running. Check and reboot it if needed.