PARTS SIDE                         CKT SIDE
------------                       ------------         

  1   GND                           A  GND
  2   GND                           B  GND
  3   +5V                           C  +5V
  4   +5V                           D  +5V
  5                                 E        
  6   +12V                          F  +12V
  7   KEY                           H  KEY
  8                                 J  RED TKBALL 1-4
  9                                 K             1-3
 10                                 L             1-1
 11                                 M             1-2
 12                                 N  BLUE TKBALL 1-4
 13                                 P              1-3
 14                                 R              1-1
 15                                 S              1-2 
 16   VID RED                       T  BP 1-9
 17   VID BL                        U  BP 1-7 
 18   VID GN                        V  RP 1-9 
 19                                 W  RP 1-7   
 20   V SYNC                        X  SVC       
 21   H SYNC                        Y            
 22   GND                           Z  COIN 1      
 23   GND                           a  COIN 2      
 24   GND                           b
 25   GND                           c 
 26                                 d 
 27                                 e  GND  
 28  SP+                            f  SP-