We have found two typos in the S.E.X. C4S (original S.E.X., not the new V 2.1) upgrade manual. If you have a manual that is simply named S.E.X. C4S it has these typos. If your manual is dated 6-15-11 these typos are corrected in your copy.
Page 11 after Part Two - installation reads
Remove the 150K ohm plate load resistors from terminals 17 to A5 and 37 to B5.
This should be
Remove the 150K ohm plate load resistors from terminals 16 to A5 and 36 to B5.
Page 15 first instruction reads
( ) Insert the free end of the wire attached to A5 into one of the pads labeled O on the A socket PC board, and solder pad O. In the same way insert the free end of the wire attached to tB6 into one of the pads labeled O on the B socket PC board, and solder pad O.
This should be
( ) Insert the free end of the wire attached to A5 into one of the pads labeled O on the A socket PC board, and solder pad O. In the same way insert the free end of the wire attached to B5 into one of the pads labeled O on the B socket PC board, and solder pad O.
