Yamaha RX-V550 Service Manual page 38

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 – – –