Front P.c.b. - Yamaha AS2000BL Service Manual

A B
A-S2000
1
FRONT (1) P.C.B. (Side A)
2
FUNCTION (1)
(W3004)
CB517
3
+5M
MG
THMR
THML
HPPRDR
HPPRDL
PRIR
PRIL
PRDR
PRDL
4
MAIN (2)
(W203)
CB507
5
FRONT (9) P.C.B.
(Side A)
6
W5004
7
52
C D
LED_MT
LED_MDIR
LED_PHO
LED_BAL
LED_L2
FRONT (6)
(CB509)
LED_L1
LED_TU
LED_CD
DGND
+5C
FUNCTION (1)
(W3004)
(Writing port)
CB519
CB515
16
16
17
64 1
9
IC502
48
49
32
33
CB505
4
3 1
W5002
• Semiconductor Location
Ref no. Location Ref no. Location
D5001 G3 Q5012 C3
D5005 G3 Q5017 D3
D5008 I3 Q5018 C3
D5010 D4 Q5021 D3
D5027 B6 Q5024 E3
IC501 E4 Q5025 D3
IC502 C4 Q5029 D3
IC504 E3 Q5030 B5
IC505 E4 Q5032 E3
Q5005 E4 Q5034 D3
Q5010 D3
Q5011 B4
E F G
+5M
PDET
/RES
RY_PWR
MG
9V
+12C
DGND
FUNCTION (3)
-12C
(W1)
PRV
RY_SPA
RY_SPB
PSAV1
PSAV2
MG
I_CNTR
1 I_LRBAL
I_BAS
I_TRE
MG
+5STBY
8
I_MMMC
I_MUTE
I_ISEL
MVOL-
MVOL+
I_VOL
DGND
+12C
H I
FRONT (2) P.C.B.
(Side A)
SPEAKERS TRIM
dB
A
B
0
+6
A+B OFF +12 -6
BI-WIRING
CB504
MAIN (2)
(W204)
FRONT (3) P.C.B.
(Side A)
BALANCE TREBLE
R L + -
W5009A W5007A
W5003A
W5005A
FRONT (5)
(W5005B)
FRONT (7)
(W5009B)
FRONT (8)
(W5007B)
FRONT (4)
(W5003B)
J
PHONES
JK501
CB503
BASS
+ -
W5008