Tektronix 2755AP/494AP Video Processor Adjustment Procedure

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I hope I'm not too off topic asking about a spectrum analyzer on this forum.

I'm looking for information on adjusting the Video Processor on a Tek 2755/494AP Spectrum analyzer.
A40 Video Processor PCB 670-8389-01

I have the service manual but adjustments for this board is not covered.
There are a few paragraphs on theory and a schematic but no explanation on how to adjust 22 potentiometers. These mostly effect band-4 leveling.

Any insights or suggestions would be appreciated.


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