Circuit Boards - Yamaha F-20B Service Manual

CIRCUIT BOARDS

MAIN1/2 CIRCUIT BOARD
GAIN
INPUT
SELECT
A
to MAIN 2/2 CN4
HIGH MID LOW MID
A'
MAIN 1/2 (J, U, C): CNA-V755470
MAIN 1/2 (H, B): CNA-V755480
MAIN 2/2 (J, U, C): CNA-V755470
MAIN 2/2 (H, B): CNA-V755480
VOLUME TREBLE
to POWER
TRANSFORMER
from POWER
TRANSFORMER
POWER
BASS
to SPEAKER
A
A'
to POWER SW
from AC CORD
VERSION
AUX IN PHONES
Component side
MAIN2/2 CIRCUIT BOARD
to MAIN 1/2 CN5
Component side
F-20B
FUSE
INDICATION
RATE
J, U 250V 315mAL
Must be
erased
Must be
erased
E, BS 250V T160mAL
7