Yamaha RX-A760, Service Manual

Page: 122 / 170

A
1
2
3
4
5
6
7
8
9
10
N M L K J I H G F E D C B
122
RX-V681/RX-A760
MON_Y
V
_
3
V
AV
_
3
V
A
AV1_Pr
MON_Pr
AV1_
Y
AV2_Pr
AV5_
V
VID_SDA AD_Pb
PS2_PR
T
PS2_PR
T
MON_Pr
AV3_
V
TUN_SCL
TUN_SC
L
MON_V
AV6_V
TUN_N_IN
T
r P _ 1 V A r P _ 1 V A
r P _ 2 V A r P _ 2 V A
b P _ 1 V A b P _ 1 V A
MON_V
MON_Pb
Y _ 1 V A Y _ 1 V A
AD_Y
TUN_N_RS
T
AD_Pr
TUN_SD
A
VID_SD
A
TUN_N_INT
Y _ 2 V A Y _ 2 V A
V
_
4
V
AV
_
4
V
A
AD_Pr
AV6_
V
AV2_
Y
b P _ 2 V A b P _ 2 V A
MON_Pb
VID_PO
N
VID_SC
L
TUN_SDA
TUN_N_RST
AD_
V
AD_V
MON_Y
AD_Pb
VID_SCL
AV5_V
AV4_
V
AV2_Pb
AD_
Y
VID_PO
N
PS2_PRT
AV1_Pb
C3601
10/16
R3601
75
C3602
10/16
R3602
75
PJ361
RJ-1078_04-0351
+3.3V
L343
100UH
C3450
100P(SL)
C346
2
10/1
0
R340
8
75
C343
7
0.1/16
R3425 75
C3471
no_use
C3430
0.1/16
+3.3V
R344
8
15
K
C3442
0.1/16
+3.3T
-3.3V
R343
6
0
+7A
C3443
0.1/16
R3422 75
C3420
0.1/16
R340
7
75
C343
1
0.1/16
R344
7
10
R344
4
47
C3449
no_use
+3.3V
C346
7
47/1
6
R345
2
10
K
RP170H331B-T1-F
IC34
2
1 VOUT
2 GND
3 CE
4
NC
5
VDD
C3433
0.1/16
R344
5
47
C3441
0.1/16
R3402
no_us
e
C3408
10/10
IC346
V-
2
C346
3
10/1
0
R342
3
4.7K
+3.3T
C346
4
10/1
0
C3447
no_use
C342
5
0.1/16
NJW1329FH3
IC34
1
9
YIN_LOS
10
YOUT_LOS
11
PS
1
VLOSOUT
2
VDD
3
SCL
4
SDA
5
GND
6
YLOSOUT
7
V-
8
YLOS
20
PBIN
1
21
PBIN
2
22
PBIN
3
23
BIASPR
1
24
PRIN
1
14
V-
15
BIASY1
16
Y
IN1
17
Y
IN2
18
Y
IN3
19
BIASPB
1
28
BIASPR2
29
PROUT
30
BIASPB2
31
PBOUT
32
BIASY2
33
YOUT
34
V+
35
V-
36
VOUT2
37
BIASV2
38
VOUT1
50
VOUT_LOS
40
V
IN7
41
V
IN6
42
V
IN5
43
V
IN4
44
V
IN3
45
V
IN2
46
V
IN1
47
BIASV1
48
V+
49
V-
39
V+
51
VIN_LOS
52
V
LOS
12
NC
13
V+
25
PRIN
2
26
PRIN
3
27
V-
TE
C3412
10/16
C3418
0.1/16
C3448
100P(SL)
R343
0
47
K
R3403
10K
C3439
100/16
C3470
no_use
C3440
100/16
VE
C343
4
0.1/16
R344
9
15
K
J340
2
no_use
C345
7
120/16
C3417
0.1/16
J340
7
R343
4
10
0
-3.3V
C3403
no_us
e
+5AE
R3405
10
K
C3406
10/10
J340
6
J340
3
no_use
C342
4
0.1/16
C3419
0.1/16
R341
0
75
C345
9
100/16
C343
5
0.1/16
C344
6
100/10
J340
9
R3421 75
R345
9
no_use
C3405
no_us
e
PN341
no_use
J340
8
PJ341
RJ-1146+08-0H00
VE
C3410
10/10
+5AE
TE
R346
1
1K
C3407
10/10
C346
6
10/1
0
C342
8
0.1/16
C3472
no_use
C342
6
0.1/16
R3431
47K
J340
1
no_use
R3404
10
K
R340
9
75
R344
6
7
.5K
R3426 75
C3413
10/16
R3420 75
R346
0
no_use
RP170H331B-T1-F
IC34
4
1 VOUT
2 GND
3 CE
4
NC
5
VDD
IC346
V+
5
C346
0
100/16
C3409
10/10
R345
1
10
K
R343
5
0
IC34
6
BD7541G-TR
YF013A0
1 3
4
Q3413
2N5401C-AT/P
C342
7
0.1/16
C3402
no_us
e
ST341
CB34
3
5204
5
CB344
52045
R341
1
75
R343
7
10
0
+7A
R343
2
4.7K
R3419 75
R340
6
75
TE
C3404
no_us
e
R3418 75
C
B
3
4
5
52418
R3413
75
R3412
75
R3417 75
C3411
10/10
C343
2
0.1/16
0
J341
0
UM6K31N Q342
0
G
5
D
S
3
4
UM6K31
N
Q342
0
G
2
D
S
6
1
J341
1
no_use
CB342 52045
PJ342
1146#5S-0H00A
CB34
6
52045
CB361
52045
CB34
7
XH
I
TE
C3453
0.1/16
R3480
10K
+5AE
C3458
0.1/16
VE
J3405
no_use
J3404
no_use
AV3_V
AV4_V
A V 3
3601-3650
361-365
A V 4
VE
O P E ( 9 )
VE
C V B S
VE
A V 1
+7
A
V I D E O
P r
+12V
Y
VID_SD
A
Y
t o O P E ( 4 )
-12V
E
TUN_SD
A
A V 5
TUN_SCL
AV3_
V
TUN_N_RST
VE
VE
+7
A
TUN_N_INT
A V 1
VE VID_PO
N
t o T U N E R P a c k
A V 2
+5AE
3401-3600
TUN_N_RST
TU
R
A V 2
E
-12V
P b
A V 2
AD_V
MI
C
A V 1
TU
E
A V 6
+5
V
PS2_PR
T
TU
L
+3.3V
AV4_
V
P b
B t o B
VE
+5AE
AD_Pb
NC
GN
D
t o O P E ( 1 )
PS2_PR
T
TUN_SD
A
VID_SC
L
C V B S
NC
VE
t o D I G I T A L
E
+12V
VE
AD_P
r
MI
C E
+3.3
T
M O N O U T
P r
TUN_N?INT
O P E ( 2 )
-5
V
TU
R
AD_Y
VE
341-360
TUN_SC
L
TU
L
VE
38
75 ohms
50
6dB
VIN3
46
VIN4
VIN1
VIN2
45
VIN5
44
VIN6
43
VIN7
42
41
40
YIN1
16
YIN2
17
YIN3
18
PBIN1
PBIN2
PBIN3
PRIN1
PRIN2
PRIN3
BIASY2 BIASY1
11
VDD
2
SCL
3
SDA
4
V-
PS
32 15
5
7,14,27,35,49 13,34,39,48
GND
V+ V+
V- V-
V+ V+
V- V-
I2C BUS BIAS
V LOS detect Y LOS detect
IC341 : NJW1329FH3
Multi input wide band video interface with I
2
C control
36 75 ohms
6dB
33 75 ohms
10
6dB
20
21
22
31
75 ohms
6dB
24
25
26
29 75 ohms
6dB
VIN_LOS VLOS VLOS_OUT YIN_LOS YLOS YLOS_OUT
51 52
1 9 8 6
V
DD
CE
Vref
1 5
2 3
Current Limit
Thermal Shutdown
V
OUT
GND
Pin No.
1
2
3
4
5
Symbol
VOUT
GND
CE
NC
VDD
Description
Output Pin
Ground Pin
Chip Enable Pin
No Connection
Input Pin
IC342, 344 : RP170H331B-T1-FE
Voltage regulator
IC346 : BD7541G-TR
Input/output full swing CMOS operational amplifier
–
+
1 5
4
2
3 OUT
VDD
IN-
IN+
VSS
OPERATION (2)
OPERATION (9)
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
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
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
AV 1
AV 1
AV 1
AV 2
AV 2
AV 2
AV 5
AV 6
MONITOR OUT
VIDEO
COMPONENT
VIDEO
COMPONENT
VIDEO
VIDEO
Page 114 F9
to DIGITAL (1)_CB76
Page 121 G9
to OPERATION (1)_CB305
Page 123 J4
to OPERATION (4)_CB383 to AM/FM TUNER
Page 120 I6
to OPERATION (3)_W3705
0V
0V
0V
0V
0V
3.296V
5.813V
3.292V
0V 0V 0V 12.142V 0V -12.061V 2.069V 0V 7.319V 0V 0V 0V
3.301V 3.301V 0.385V 0V
0V -12.061V 0V 0V 12.144V
3.306V 0V 0V 0V
-5.859V 7.341V 0V 0V
3.282V
3.296V
3.282V
3.306V
0V 0V 0V
3.295V
0V 0V 0V 0V
3.290V 2.070V 3.287V 3.287V 0.381V 3.292V 3.304V 3.304V
0V 0V 0V 0V 0V
OPERATION 2/3
RX-A760
Details of colored lines
Red / full line: Power supply (+)
Red /dashed line: Power supply (-)
Orange:
Signal detect
Yellow: Clock
Green: Protection detect
Brown: Reset signal
Blue: Panel key input
★
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.