Yamaha A-S501, Service Manual

Page: 64 / 91

A
1
2
3
4
5
6
7
8
9
10
N M L K J I H G F E D C B
64
A-S501/A-S301
M
I
N
1
2
3 4
BP
M
I
N
1
2
3 4
M
I
N
1
2
3 4
M
I
N
1
2
3 4
M
I
N
S
S
J853
no_use
SW804
SRBV141400
1
8 9 5 4
10
3 2
Q
8
0
1
n
o
_
u
s
e
W806A
J
8
2
0
n
o
_
u
s
e
D854
no_use
D811
SEL6910A-CD
R748 1P470
R830
10K
U801
GP1UE271RKVF
VCC T U O G
C853
470/6.3
R804
10K
R863
1K
W805A
D823
no_use
Q803
D
T
C
1
1
4
E
K
A
VRG
+5S
R811
1.5K
D820
SEL6910A-CD
D824
no_use
C
8
1
1
0
.
1
/
1
6
D853
no_use
W806B
MG
R
8
2
2
6
8
0
R
8
4
3
1
0
K
C
8
3
9
0
.
1
/
1
6
MG
R832
no_use
D814
SEL6910A-CD
C
8
5
1
0
.
0
1
(
B
)
MG
R
8
4
5
1
0
K
R882
no_use
C832
no_use
R813
1.5K
R839
470
D832
no_use
IC852
BH6578FVM-TR
1
2
3
4
8
7
6
5
D817
no_use
C856
0.01(B)
1
0
/
1
6
C
8
1
2
D810
SEL6910A-CD
+5M
R
8
0
5
1
0
K
FG
S
W
8
0
6
R879
no_use
0
J821
C
8
0
1
0
.
1
/
1
6
D812
SEL6910A-CD
D833
no_use
D808
no_use
C806
no_use
+5S
R840
470
R
8
8
0
n
o
_
u
s
e
D816
no_use R851
47
R824
no_use
S
W
8
0
1
n
o
_
u
s
e
CB808
1
2
3
4
5
6
7
D831
no_use
R803
no_use
D
8
5
1
S
S
3
5
5
V
M
D818
no_use
C
8
1
8
1
0
/
6
.
3
R837
10K
R821
no_use
D819
no_use
D
8
0
4
n
o
_
u
s
e
R867
1K
+5M
VR953
10KB
R841
470
C854
1/50
MG
C830
no_use
R842 100
CB801
52044
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SW805
SPUN122100
R
8
0
7
1
0
0
K
R820
no_use
VR955
10KB
R861
1K
R873 10K
Q802
no_use
D D G
S D D
D D G
S D D
D813
SEL6910A-CD
VR954
10KB
C
8
1
5
1
0
0
P
(
S
L
)
C
8
0
5
n
o
_
u
s
e
R877
no_use
CB706
D830
no_use
R862
1K
R
8
2
6
4
7
K
R870
47K
R749 1P470
R833
1K
D805
SEL6910A-CD
R
8
2
5
2
.
4
K
D
8
2
2
n
o
_
u
s
e
D825
no_use
FG
R878
no_use
R816
no_use
FG
D806
SEL6910A-CD
D809
SEL6910A-CD
R823
1K
C803
no_use
MG
D
7
1
6
1
S
S
3
5
5
V
M
R831
no_use
R806
no_use
R819
no_use
+5M
R865
1K
R
8
3
8
1
0
0
K
CB853
PHL
1
2
3
4
5
6
D821
no_use
Q804
no_use
D807
no_use
R
8
7
6
n
o
_
u
s
e
C852
no_use
+5M
C
8
1
7
0
.
1
/
1
6
D
7
1
5
1
S
S
3
5
5
V
M
C
8
3
1
0
.
1
/
1
6
D
8
5
2
S
S
3
5
5
V
M
IC801
LC709004AMJ-AH
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
4
2
3
2
2
2
1
2
0
2
9
1
8
1
7
1
6
1
5
1
4
1
3
1
D815
SEL6910A-CD
PN702
no_use
R834
no_use
C
8
0
2
0
.
1
/
1
6
R871
62K
R864
1K
R
8
4
4
1
0
K
VR952
10KB
R
8
2
9
4
7
K
C
8
1
3
1
0
0
P
(
S
L
)
R872 10K
C
8
1
6
0
.
1
/
1
6
ST701
+5S
R866
1K
R802
no_use
0
J
8
5
4
SW802
XREB12505PVB25F
COM B A
D
8
0
3
n
o
_
u
s
e
FG2
R
8
6
9
n
o
_
u
s
e
C
8
1
4
1
0
0
P
(
S
L
)
R
7
5
0
n
o
_
u
s
e
R815
1.5K
D801
no_use
D802
no_use
R809
1.5K
R881
no_use
W805B
R874
no_use
FG1
R
8
1
8
4
7
R
8
6
8
n
o
_
u
s
e
+5S
C
7
2
8
0
.
0
1
/
1
0
0
C
7
3
0
0
.
0
1
/
1
0
0
C
7
2
9
0
.
0
1
/
1
0
0
JK701
C1
OP1
L
R
GND
OP2
C2
C
7
3
1
n
o
_
u
s
e
VR851
RK16811MGA09
VR851
RK16811MGA09
W803
1
2
3
4
5
6
W801
1
2
3
4
5
6
7
PN851
LED
t
o
M
A
I
N
(
1
)
REM
CD DIRECT
MAIN
OPE(4)
H P
L_CLK
INPUT Selector
M V O L
+5M
OPE(5)
PCMX8_LED
COAXIAL_LED
MG
SP A/B
HPL77
+5S
USB_LED
BASS
HPE
ISB
KEY0
TREBLE
F U N C _ L E D
+5M
MPLED
BALANCE
OPE(1)
*MPLED
PURE_DIR_LED
t
o
F
U
N
C
(
2
)
n o _ u s e
t
o
F
U
N
C
(
2
)
DSDX2_LED
MG
TREBLE
LED
OPTICAL_LED
PURE DIRECT
+5M
O P E ( 6 )
LINE2_LED
L_RES
BASS
MG
KEY1
LOUDNESS
ON/OFF
L_DIN
+5M
CD_DIR_LED
901-
MPSW
REM
LOUDNESS
P _ S W
MG
O P E ( 3 )
ZONE POWER
LINE1_LED
PCMX4_LED
T C
P _ L E D
PHONO_LED
ISA
BALANCE
LED
DSDX1_LED
HP_DET
+5M
+5M
MPSW
MG
KEY1
U801 BODY
L_CS
VOLUME
*MPLED
Self-lock
PCMX1_LED
VRG
MPSW
*MPLED
PCMX2_LED
+5MTR
A+B
O P E ( 7 )
+5S
AD_VOL
MPSW
MG
+5M
VRG
MG
A
REM
KEY1
O P E ( 2 )
S P A / B
LED
KEY0
VRUP
+5M
REM
CD_LED
MG
*MPLED
REM
TUNER_LED
VRDN
MG
+5S
MPSW
t
o
F
U
N
C
(
2
)
OFF
HPR
B
LINE3_LED
+5M
IC852
: BH6578FVM
Silicon monolithic integrated circuit
6 5 7 8
Control
Logic
F R
+ -
1 3 4 2
PAW CMOS
H-Bridge
TERMAL
SHUT DOWN
LDCONT
Vcc
Vcc GND OUT+ OUT-
INFWD GND_S INREV LDCONT
PRE
GND
POW
GND
IC801 : LC709004AMJ
I/O-Expander for Microcontroller
Port 1 I/O buffer
I/O control/output register
Serial/parallel converter/shift register
C
on
tro
l l
og
ic
DOUT
VDD
VSS
P17 P10
V
DD
P
1
DIN
CLK
CS
RES
Port 0 I/O buffer
P07 P00
LINE3
LINE2
LINE1
OPTICAL
COAXIAL
CD
INPUT
TUNER
PHONO
PURE DIRECT
PURE DIRECT
SPEAKERS
POWER indicator
PHONES
VOLUME
BASS TREBLE BALANCE LOUDNESS
RESISTOR
REMARKS
NO MARK PARTS NAME
CARBON
CARBON
METAL
METAL
METAL
FIRE
CEMENT
SEMI FILM RESISTOR
FILM RESISTOR
OXIDE FILM RESISTOR
FILM RESISTOR
PLATE RESISTOR
PROOF CARBON FILM RESISTOR
MOLDED RESISTOR
VARIABLE RESISTOR
(P=5)
(P=10)
CHIP RESISTOR
N O T I C E
U.S.A
G
CANADA
STANDARD
L
CHINA
AUSTRALIA
SINGAPORE
KOREA
GENERAL
U
C
T
A
K
R
JAPAN
(model)
B BRITISH
J
SOUTH EUROPE E
V
TAIWAN
F RUSSIAN
P LATIN AMERICA
S BRAZIL
H THAI
REMARKS
CAPACITOR
PARTS NAME
NO
NO
MARK
MARK
ELECTROLYTIC CAPACITOR
CERAMIC CAPACITOR
POLYESTER FILM CAPACITOR
POLYSTYRENE FILM CAPACITOR
MICA CAPACITOR
POLYPROPYLENE
FILM CAPACITOR
SEMICONDUCTIVE CERAMIC CAPACITOR
P
TANTALUM CAPACITOR
TUBULAR
S
CAPACITOR CERAMIC
FILM SULFIDE POLYPHENYLENE
CAPACITOR
OPERATION (1)
OPERATION (3)
OPERATION (5)
OPERATION (4)
OPERATION (7)
OPERATION (6)
OPERATION (2)
INPUT
indicators
POWER
Page 62 K2
to FUNCTION (1)_CB505
Page 62 J8
to FUNCTION (1)_CB508
Page 62 L3
to FUNCTION (1)_W504
Page 67 B5
to MAIN (1)_W10
(A-S501)
Page 69 B5
to MAIN (1)_W10
(A-S301)
0 00
4 96
4 96
4 96
4 96
4 96
4 96
4 97
4 96 4 96
4 96
4 97
4 96
4 96
4 96
10 0
4 94
3 5
0 09
4 9
1 93
3 5
3 5
(A) 1 22
(OFF) 1 24
2 45 (A)
2 47 (OFF) 3 684 (A)
3 72 (OFF)
4 96
4 9
4 96
4 96
4 88
0 0337
3 07
4 95
5 05
2.189
4 22
4 22
4 96
2 42 2 407 2 584
30dB=0
normal 4 96
4 96
0 01
0
0 01
0 002
0 002
OPERATION 1/2
★ All voltages are measured with a 10M Ω /V DC electronic voltmeter.
★
Components having special characteristics are marked
⚠
and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
● 電圧は、内部抵抗
10M
Ωの電圧計で測定したものです。
● ⚠印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがあります。
Details of colored lines
Red / full line: Power supply (+)
Red / dashed line: Power supply ( ‑ )
Orange: S ignal detect
Y ellow: Clock
G reen: Protection detect
B rown: Reset signal
B lue: Panel key input
A-S501 A-S301