Yamaha A-S3000 Service Manual page 50

A B
A-S3000
1
FUNCTION (1)
(Side A)
2
FRONT (15)
(W420)
RY_SPA
RY_SPB
-12C
3
-12C
RY_MDIR
RY_LINE2
RY_LINE1
RY_TU
RY_CD
RY_SEL_BAL RY_BALGAIN
RY_BAL1
RYB1_PLTY
RY_BAL2
RYB2_PLTY
RY_BAL_COLD
+5S
N_MT_REC
N_MT_PRE
MG
MG
MG
4
INPUT (3)
(CB907)
BAL1G_DET
BAL2G_DET
BAL1_PLTY
BAL2_PLTY
+5S
MG
EV_RBAS
EV_RTRE
EV_RCOM
EV_LCOM
EV_LTRE
EV_LBAS
EV_CK
EV_DT
SW_BAS
SW_TRE
RY_TCBYP
N_MT_MAIN
-12C
5
INPUT (3)
(CB906)
6
7
50
C D
SYSTEM
REMOTE TRIGGER
CONNECTOR
IN OUT IN
JK505
JK503 JK501
JK502
5 4
1 3 IC503
51
80
81
50
Writing port
IC502
CB511 3 2
IC504
4 1
31
100
1 30
1
16 9
IC505
3
1 8
CB502
CB509 CB507 CB508
MAIN (1)
FRONT (1)
FRONT (1) (W102)
(CB405)
(CB410)
FRONT (1)
(CB406)
E F
AC IN
Power
transformer
5
4
CB5
POWER TRANSFORMER
FRONT (14)
(CB401)
INPUT (2)
(CB803)
• Semiconductor Location
Ref no. Location
G H
IC1 IC2
IN COM OUT IN COM OUT
W502 W501
CB505
MAIN (3)
(CB306)
Ref no. Location Ref no. Location Ref no. Location
D1 D3 D520 C2 IC504 D4 Q505
D3 E3 D521 C2 IC505 D4 Q506
D4 D3 D759 D3 IC506 E4 Q509
D6 I5 D760 C4 IC507 C3 Q510
IC1 H4 IC723 D3 Q513
D501 D2
D503 D3 IC2 I4 Q1 D3 Q514
D515 D4 IC501 D3 Q4 E3 Q517
D518 C3 IC502 C4 Q7 E3 Q518
D519 C3 IC503 C3 Q12 H4 Q521
I J
FRONT (16)
(W421)
CB506
CB1
POWER TRANSFORMER
MAIN (2)
(W202)
Ref no. Location
C4 Q522 C3
D3 Q525 C3
C4 Q526 C3
C3 Q529 C3
D3 Q530 C3
C3 Q533 C3
D3 Q534 C3
C3 Q538 D3
D3 Q775 D3