Harman Kardon HK680 Technical Manual page 16

| P. C. BOARDS (3)
Control P. C. Board
Input Selector P. C. Board
n@g
REMOTE
SENSOR
BUSHING
PRE-OUT/MAIN-IN
CONNECTIONS
MAIN-IN
562 LEFT
35
Volume LED P. C. Board
oLescoes
VOLUME
Power LED P. C. Board