HP 8566B Adjustment Manual page 313

Generator Assembly, and the A6A12 YTX Driver Assembly in the
RF Section. Replace the cover on the A6 RF Module.
29. Reconnect cable 84 (gray/yellow) to A6A12Jl and cable 82
(gray/red) to A6A12J2. Reconnect cable 2 (red) to A6A9Jl 300
MHz OUTPUT, cable 0 (black) to A6A9J2 CAL OUTPUT, cable
85 (gray/green) to A6A9J3 100 MHz INPUT, cable 4 (yellow) to
INPUT.
30. Replace the RF Section bottom cover.
20. Last Converter Adjustments
Adjustments 3-173