[Yaesu] Dipswitches S3003

[Harold Mandel]

Reference the Yaesu FT-1000
Technical Supplement,
 
AF Circuit Board
 
Schematic Diagram Page 7-43
 
Find: S 3003 dipswitch (4 switches)
 
(Attaches to Q 3056, Pins 15, 16, 17, 21).
 
(S 3002, "AUTO/SEMI" attaches
  to pins 18, 19 on Q 3056).
 
What do these switches control?
 
Thanks,
 
Hal Mandel
W4HBM