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Yamaha HTR-5740 サービスマニュアル
A
B
RX-V550/HTR-5750
RX-V450/HTR-5740/DSP-AX450
I REMOTE CONTROL RAV250: RX-V550 (U, C, A, L, R, T, K models), HTR-5750, RX-V450/HTR-5740 (U, C, A, L, R, T, K models), DSP-AX450
1
RAV251: RX-V550 (B, G, E models)
G SCHEMATIC DIAGRAM
IC1
VBAT
VDD
VB1
20
VDD
VB2
2
+
D3
D4
D5
C2
C1
0.1µ
470µ
VDD
11
VSS
OPTION
BATT
21
OSC1
AAA x 4
X1
22
OSC2
VB2
VDD
R1
C6
R14
470k
0.1µ
1M
3
Q3
KST3904
R13
19
RES
100k
C5
R12
D6
0.01µ
56k
OPTION
VDD
R2
100k
R3
56k
16
PC3
4
Q2
KST3904
R4
18k
18
PC5
17
NC
PC4
5
6
7
124
C
D
PA0
PA1
PA2
PA3
K57
K58
K59
K60
K61
23
PA7
PA7
24
PA6
PB7
5
9
0/10
6
+10
PA6
25
PA5
PA5
26
PA4
K49
K50
K51
K52
K53
PA4
3
PA3
PA3
4
PA2
PA2
5
PA1
✩
✩✩
PA1
PB6
DVD
VCR 1
D-TV/CBL
6
PA0
PA0
K41
K42
K43
K44
K45
PB5
REC
PAUSE
SKIP –
REW
SKIP +
K33
K34
K35
K36
K37
PB4
RETURN
LEFT
DOWN
TITLE
SELECT
K25
K26
K27
K28
K29
PB3
TV MUTE
TV VOL -
TV INPUT
TV VOL +
CH -
27
PB7
PB7
K17
K18
K19
K20
K21
28
PB6
PB6
1
PB5
PB5
2
PB4
PB4
7
PB3
PB2
CODE SET
1
2
MUTE
3
PB3
8
PB2
PB2
K9
K10
K11
K12
K13
14
PC1
PC1
13
PC0
NC
PC1
TV POWER
CD
MD/CD-R
AV POWER
TUNER
VB2
VB1
VBAT
D2
D1
R5
220K
12
PF0
C7
R6
0.01µ
1M
R7
R8
R9
1K
10
10
15
PC2
R10
9
Q1
PB1
8050D
100
10
PB0
NC
E
F
Key
Schematic
Function
No.
Key No.
PA4
PA5
PA6
PA7
K62
K63
K64
1
K17
CODE SET
7
ENTER
8
2
K9
TV POWER
K54
K55
K56
3
K12
AV POWER
4
K14
STANDBY
V-AUX
AMP
MULTI CH INPUT
5
K16
SYSTEM POWER
K46
K47
K48
6
K10
CD
FF
STOP
AUDIO
7
K11
MD/CD-R
K38
K39
K40
8
K13
TUNER
9
K15
SLEEP
UP
RIGHT
MENU
K30
K31
K32
10
K49
DVD
11
K52
D-TV/CBL
CH +
VOL -
VOL +
12
K54
V-AUX
K22
K23
K24
13
K56
MULTI CH INPUT
PLAY
4
DISPLAY
14
K50
VCR
K14
K15
K16
15
K51
STANDBY
SLEEP
SYS_POW
16
K53
17
K55
AMP
18
K28
TV VOL +
19
K30
TV CH +
20
K32
VOLUME +
21
K26
TV VOL –
22
K29
TV CH –
23
K31
VOLUME –
24
K25
TV MUTE
25
K27
TV INPUT
26
K20
MUTE
27
K18
28
K19
29
K21
30
K23
31
K57
32
K60
33
K62
34
K64
35
K58
36
K59
37
K61
+10
38
K63
ENTER
39
K36
TITLE
40
K38
41
K40
MENU
42
K34
43
K37
SELECT
44
K39
45
K33
RETURN
46
K35
47
K24
DISPLAY
48
K41
REC
49
K44
REW
50
K46
51
K48
AUDIO
52
K42
PAUSE
53
K43
SKIP –
54
K45
SKIP +
55
K47
STOP
56
K22
PLAY
G
H
ZONE2
DVD
LD
CD
YPC
MAIN
ZONE2
SYSTEM
Yamaha1
Yamaha3
Yamaha4
Yamaha
Yamaha1
Yamaha2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7C-80
004.012
048.012
–
–
7A-1E
7E-7F
7E-BB
7A-1E
–
–
–
–
–
7A-1D
7E-7E
7E-BA
7A-1D
–
–
–
–
–
7A-15
7A-15
7A-D1
–
–
–
–
–
–
7A-C9
7A-C9
7A-CF
–
–
–
–
–
–
7A-16
7A-16
7A-D2
–
–
–
–
–
–
7A-57
7A-57
–
–
–
–
–
–
–
7A-C1
7A-C1
7A-CD
–
–
–
–
–
–
7A-54
7A-54
7A-D9
–
–
–
–
–
–
7A-55
7A-55
7A-D8
–
–
–
–
–
–
7A-87
7A-87
–
–
–
–
–
–
–
7A-0F
7A-0F
7A-D6
–
–
–
–
–
–
7A-13
7A-13
7A-D7
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7A-1A
7A-1A
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7A-1B
7A-1B
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7A-1C
7A-1C
7A-DC
–
1
–
–
–
–
7C-94
004.001
048.001
7C-17
79-11
79-11
2
–
–
–
–
7C-95
004.002
048.002
7C-18
79-12
79-12
3
–
–
–
–
7C-96
004.003
048.003
7C-19
79-13
79-13
4
–
–
–
–
7C-97
004.004
048.004
7C-1A
79-14
79-14
5
–
–
–
–
7C-98
004.005
048.005
7C-1B
79-15
79-15
6
–
–
–
–
7C-99
004.006
048.006
7C-1C
79-16
79-16
7
–
–
–
–
7C-9A
004.007
048.007
7C-1D
79-17
79-17
8
–
–
–
–
7C-9B
004.008
048.008
7C-1E
79-18
79-18
9
–
–
–
–
7C-9C
004.009
048.009
7C-1F
79-19
79-19
0
–
–
–
–
7C-93
004.000
048.000
7C-16
79-10
79-10
–
–
–
–
7C-9D
004.120
–
7C-5D
79-1A
79-1A
–
–
–
–
7C-9E
–
–
7C-15
79-0B
79-0B
–
–
–
–
7C-B1
004.113
048.200
–
–
–
–
–
–
7C-B4
004.088
048.088
–
–
–
–
–
–
7C-B2
004.084
048.084
–
–
<
–
–
–
–
7C-B5
004.090
048.090
–
–
–
–
–
–
7C-B8
004.092
048.092
–
–
>
–
–
–
–
7C-B6
004.091
048.091
–
–
–
–
–
–
7C-B7
004.131
048.131
–
–
–
–
–
–
7C-B3
004.089
048.089
–
–
–
–
–
–
7C-A6
004.015
048.015
7C-13
79-0A
79-0A
–
–
–
–
7C-8B
004.127
048.055
–
7A-4F
79-4F
–
–
–
–
7C-86
004.041
048.041
7C-06
7A-0D
79-05
FF
–
–
–
–
7C-87
004.040
048.040
7C-07
7A-0C
79-06
–
–
–
–
7C-AD
004.078
048.078
7C-12
–
–
–
–
–
7C-83
004.048
048.048
7C-5A
7A-09
79-55
–
–
–
–
7C-B9
004.033
048.033
7C-02
7A-0B
79-04
–
–
–
–
7C-BA
004.032
048.032
7C-03
7A-0A
79-07
–
–
–
–
7C-85
004.049
048.049
7C-5B
7A-09
79-56
–
–
–
–
7C-82
004.044
048.044
7C-05
7A-08
79-02
I
J
CD-R
MD
TAPE
TUNER
AMP
Yamaha
Yamaha1
Yamaha2
Yamaha1
Yamaha2
Yamaha1
Yamaha2
FIX
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
79-B5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7A-1A
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7A-1B
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7A-1C
7F-91
79-85
79-B7
–
–
7A-E5
D1-0E
7A-88
7F-92
79-86
79-B8
–
–
7A-E6
D1-0F
7A-89
7F-93
79-87
79-B9
–
–
7A-E7
D1-10
7A-8A
7F-94
79-88
79-BA
–
–
7A-E8
D1-11
7A-8B
7F-95
79-89
79-BB
–
–
7A-E9
D1-12
7A-8C
7F-96
79-8A
79-BC
–
–
7A-EA
D1-13
7A-8D
7F-97
79-8B
79-BD
–
–
7A-EB
D1-14
7A-8E
7F-98
79-8C
79-BE
–
–
7A-EC
D1-15
7A-8F
7F-99
79-8D
79-BF
–
–
–
–
7A-90
7F-90
79-8E
79-C0
–
–
–
–
7A-96
7F-9A
79-8F
79-8F
–
–
–
–
7A-97
7F-8A
–
–
–
–
–
–
7A-56
–
–
–
–
–
–
–
–
7A-86
–
–
–
–
–
–
7A-10
7A-10
7A-98
–
–
–
–
–
–
7A-12
–
7A-9C
–
–
–
–
–
–
–
–
7A-53
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7A-52
–
–
–
–
–
–
–
D1-0D
7A-85
–
–
–
–
–
–
7A-11
7A-11
7A-99
7F-9E
79-A5
79-A5
–
–
–
–
7A-C2
–
79-AF
79-B1
7A-04
7F-04
–
–
–
7F-88
79-AC
79-AC
7A-01
7F-01
–
–
–
7F-89
79-AD
79-AD
7A-02
7F-02
–
–
–
–
–
–
–
7A-06
7F-06
–
–
–
7F-83
79-A9
79-A9
–
–
–
–
–
7F-86
79-AB
79-AB
7A-07
7F-07
–
–
–
7F-87
79-AE
79-AE
7A-40
7F-08
–
–
–
7F-84
79-AA
79-AA
7A-03
7F-03
–
–
–
7F-82
79-A8
79-A8
7A-00
7F-00
–
–
–