Yamaha Portatone PSR-550 Service Manual page 24

PSR-550
AM Circuit Board
TO HOST
to SPEAKER (Tw) R
PN 2/5 Circuit Board
Component side
24
HOST SELECT
to DM-CN170
to PN 1/5-CN502
IN MIDI OUT
to SPEAKER (Wo)
PN 3/5 Circuit Board
PITCH BEND
Component side
FOOT SWITCH
1999
Component side
to PN 1/5-CN503
AM : 2NA-V362300 1
PN 2/5, PN 3/5 : 2NA-V701960-1
C
C'