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Factory Service Manual Addendum
       Page 1 to 17
       Page 19 to 40

Diagrams
Model 681A
       Main Schematic
       Main Schematic (11x17)

Model 681X
       Main Schematic
       Main Schematic (11x17)

Model 682A
       Main Schematic
       Main Schematic (11x17)

Model 682X
       Main Schematic
       Main Schematic (11x17)

Model 2679A
       Channel Sel Schematic
       Microphone Schematic
       Main Schematic
       Channel Sel Schematic (11x17)
       Microphone Schematic (11x17)
       Main Schematic (11x17)

Model 2679A-X
       Main Schematic
       Logic Schematic
       Microphone Schematic
       Main Schematic (11x17)
       Logic Schematic (11x17)
       Microphone Schematic (11x17)

Model 2679X
       Main Schematic
       Microphone Schematic
       Channel Sel Schematic
       Main Schematic (11x17)
       Microphone Schematic (11x17)
       Channel Sel Schematic (11x17)

Model 2680A
       Main Schematic
       Main Schematic (11x17)

Model 2680X
       Main Schematic
       Main Schematic (11x17)

Model 2682B
       Main Schematic
       Main Schematic (11x17)

Model 2682X
       Main Schematic
       Main Schematic (11x17)

Model 2683A
       Main Schematic
       Main Schematic (11x17)

Model 2683X
       Main Schematic
       Main Schematic (11x17)

Model 2701X
       Main Schematic
       Main Schematic (11x17)

Model 2710X
       Main Schematic
       Channel Sel Schematic
       Microphone Schematic
       Main Schematic (11x17)
       Channel Sel Schematic (11x17)
       Microphone Schematic (11x17)

Model 3084B
       Main Schematic
       Main Schematic (11x17)

Model 3084X
       Main Schematic
       Main Schematic (11x17)

Model 3087A
       Main Schematic
       Main Schematic (11x17)

Model 3087X
       Main Schematic
       Main Schematic (11x17)