F1A4 Field Service Manual – Level 1 and Level 2 Maintenance
7.4
PCB WIRING - ILLUSTRATION
Earset plug, Loudspeaker, Ribbon Cable and Switch to PCB connections
BLACK
BLUE
RED
YELLOW
EARSET PLUG
RED
BLACK
BLACK
BLUE – Connected via screw to case.
(Only used in early series F1A4s)
BLACK
RIBBON
CABLE
RED
LOUD
SPEAKER
Coil plug to PCB connections
BLUE
YELLOW
Power plug to PCB connections
ORANGE
RED
RED
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RED
YELLOW
(ON/SEARCH)
(COMMON)
BLUE
(BALANCE)
ON/OFF/GROUND BALANCE
SWITCH
WHITE
YELLOW