Yamaha DSP-AX757 Manual de serviço - Página 47

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Yamaha DSP-AX757 Manual de serviço
A
B
C
RX-V757/DSP-AX757/DSP-AX757SE
RX-V657/HTR-5860
SCHEMATIC DIAGRAM (CONVERSION)
1
2
TO SUBTRANS (2) CB463
Page 92
RX-V757/DSP-AX757/DSP-AX757SE/RX-V657
HTR-5860
Page 93
I-2
3
4
COMPONENT
VIDEO
SELECTOR
AMP
0
5.0
0
5.0
0
0
-5.1
0
0
0
0
5.0
0
0
-5.1
0
0
0
5.0
0
0
-5.1
0
-5.1
0.1
0
4.9
0
0.1
5
6
RX-V757, DSP-AX757,
DSP-AX757SE models
0
0
0
0
0
0
0
0
0
0
7
0
-5.1
0.1
0
0.1
8
9
IC703 : NJM2581M
Video Amp
RX-V757/DSP-AX757/DSP-AX757SE/RX-V657
75
6dB
VIN1
1
Driver
14
V+1
AMP
BIAS
NEE1
2
13
VOUT1
6dB
75
VIN2
3
12
V+2
AMP
Driver
IC709 : TK15420MTL
BIAS
Video Amp
10
VEE2
VOUT2
4
11
75
6dB
VIN3
5
Driver
10
V+3
AMP
OUT
1
1
BIAS
VEE3
6
9
VOUT3
–IN
1
2
+IN
3
1
PowerSave
7
REF
8
GND
4
–V
CC
94
D
E
F
A, B (RX-V657),
R, T, L
B (DSP-AX757SE)
G, E
D1938F (S/T)
D1938F (S/T)
D1938F (S/T)
VZ725900
VZ725900
VZ725900
H-3
4.9
4.9
2.5
2.5
0
2.5
2.5
2.4
0
2.5
2.5
2.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Y/C
SEPARATER
4.9
4.9
4.9
2.2
2.2
4.9
4.2
1.4
1.8
1.6
4.2
1.2
3.1
3.1
2.9
1.2
0.7
2.2
2.2
0.7
1.8
0
4.9
4.9
0
1.8
4.9
2.4
4.9
4.9
4.9
0
4.9
4.9
4.9
2.2
4.2
1.6
1.3
4.2
3.4
1.3
0.7
0.7
REGULATOR
19.2
19.1
9.0
0
18.5
0.1
4.9
REGULATOR
0
5.0
7.8
0
1.1
-0.5
-8.6
0
0
-9.3
-9.2
4.9
-5.1
-9.2
-11.2
-9.2
-2.7
-3.4
Page 91
TO SUBTRANS (8) CB446
TO POWER (1) W352
Page 92
F-3
HTR-5860
Page 93
E-2
IC706, 707 : TC74VHCU04FT
Hex Inverters
1A
1
14
V
DD
IC713 : PQ05RD11
Rgulator
1Y
2
6A
13
2A
3
12
6Y
2Y
4
11
5A
VIN
1
2
VO
8
+V
CC
3A
5
10
5Y
7
OUT
2
+
–
+
–
I C
6
–IN
3Y
6
9
4A
2
4
CV
5
+IN
2
V
SS
7
8
4Y
3
GND
G
H
R, T, L
A, B (RX-V657), G, E
B (DSP-AX757SE)
AIN
470P
UA65247
X: NOT USED
TO SUBTRANS (6) CB441
RX-V757/DSP-AX757/DSP-AX757SE/RX-V657 Page 92
HTR-5860 : N.C.
RX-V757, DSP-AX757,
DSP-AX757SE models
COMPONENT
CONVERSION
0
4.9
0
0
0
0
-5.1
4.9
0
4.9
4.9
0
1.1
1.1
1.6
0
2.9
4.9
0
4.9
4.4
0
1.5
9.0
0.1
5 6
7
9.0
0.8
8
4.9
2.4
0
0
0
2.5
1.2
3
1
0
2
0
0
5
7
0
6
4
-5.1
3.4
-3.4
3.4
2.8
4.9
3.4
2.8
4.9
0.6
3.4
0.1
0
1H
DELAY LINE
I-3
IC701, 702, 704 : TC74HC4052AF
Analog Multiplexers/Demultiplexers
INHIBIT
VDD
6
16
A
LEVEL
BINARY TO 1-OF-4
10
CONVERTER
DECODER WITH INHIBIT
B
9
VSS
8
VEE
7
X0
12
SW
X1
14
SW
X
13
X2
15
SW
X3
11
SW
Y0
1
SW
Y1
5
SW
INHIBIT
B
A
Y
0
0
0
0x, 0y
3
0
0
1
1x, 1y
Y2
2
SW
0
1
0
2x, 2y
Y3
SW
0
1
1
3x, 3y
4
1
X
X
NONE
I
J
K
IC705 : TC90A49F
IC710 : TA8772AN
3 Line Digita Y/C Separatoy
Delay System for Color TV or VCR
ANALOG
THROUGH MODE
VERTICAL EDGE
COLOR
ENHANCEMENT CIRCUIT
24
Y OUT
LINE
LINE
+
5
ADC
Y-LPF
Y DAC
MEMORY
MEMORY
–
C-BPF
C-BPF
C-BPF
KILLER
CLAMP
20
C OUT
4 fsc
DYNAMIC COMB FILTER
C-BPF
Trap
C-LPF
C DAC
8 fsc
1/2
PLL
I 2 C BUS
15
17
11
12
13
14
CKIN
FIL
SDA
SCL
TEST
KILLER
TO SUBTRANS (6) CB442
F-1
RX-V757/DSP-AX757/DSP-AX757SE/RX-V657
Page 92
F-1
Page 93
F-2
HTR-5860
IC711 : TA1270BF
Sync Processing System
DAC2
38
DAC2
PHONO MM
ANALOG IN
DAC1
39
DAC1
EQ AMP
(DVD)
11.6
0
Y IN
40
3
0
PEDESTAL
0
1
CLAMP
2
DAC Vcc
41
(5V)
Y DL
42
C Vcc
(5V)
UV/CbCr SW
43
0
6
0
fsc OUT
44
0
7
-11.7
5
1HDL CONT
45
CONTROL
SECAM CONT
46
CONTROL
REGULATOR
47
B-Y/Cb OUT
7.0
12.0
CbCr / UV
SW
7.7
R-Y/Cr OUT
48
7.7
0
1
0
Page 95
I-4
TO XM CB23
4.43MHz
X'tal
-7.6
-7.6
-7.0
-12.0
IC831, 832 : BD3841FS
Function Switch
0
0
0
0
0
0
-7.0
32
0
0
0
6.9
0
0
0
0
0
0
INPUT
0
0
0
0
F-SW1: INPUT FUNCTION 1
SELECTOR
F-SW2: INPUT FUNCTION 2
0
0
0
0
0
0
0
0
0
0
1
IC833 : NJM2068MD-TE2
ZONE 2
Dual OP-Amp
SELECTOR
OUT
1
–IN
1
+IN
1
–V
CC
RX-V757 (U, C, A, G), RX-V657 (U, C, A, B, G, E) models
DSP-AX757SE model
IC708 : TC74HC4053AF (EL)
Analog Multiplexers/Demultiplexers
VDD
16
14
X-COMMON
A
11
OUT C IN
12
OX
OUT C IN
13
IX
B
10
OUT C IN
2
OY
OUT C IN
IY
1
CONTROL INPUTS
"ON" CHANNEL
C
9
OUT C IN
5
OZ
INHIBIT
C
B
A
0X (Pin 12), 0Y (Pin 2), 0Z (Pin 5)
(Pin 6)
(Pin 9)
(Pin 10)
(Pin 11)
1X (Pin 13), 1Y (Pin 1), 1Z (Pin 3)
L
L
L
L
0X, 0Y, 0Z
OUT C IN
3
IZ
L
L
L
H
1X, 0Y, 0Z
L
L
H
L
0X, 1Y, 0Z
INH
6
4
Z-COMMON
L
L
H
H
1X, 1Y, 0Z
L
H
L
L
0X, 0Y, 1Z
L
H
L
H
1X, 0Y, 1Z
15
Y-COMMON
L
H
H
L
0X, 1Y, 1Z
L
H
H
H
1X, 1Y, 1Z
H
*
*
*
NOTE
* Don't Care
8
7
VSS
VEE
L
M
N
B-Y CLAMP
B-Y FROM
R-Y FROM
R-Y OUT
B-Y OUT
DET.
R-Y IN
B-Y IN
MODE SW2
MODE SW1
CCD
CCD
GND
VGG
VOUT1
VDB1
VDB2
VOUT2
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
REF
REF
Clamp
Clamp
LPF
LPF
x1 or x1/2
x1 or x1/2
AGC
AGC
AGC
Pulse
Pulse
Det
Ins.
Ins.
S/H
S/H
Pulse
Pulse
Remove
Remove
Clamp
Clamp
AGC
Det
CCD 1H
CCD 1H
Ave
Bias
1/225
Pulse
225fH
Det
Clock
HP. GP
VCO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R-Y CLAMP
R-Y TO
B-Y TO
R-Y AGC
VCC
FILTER
S.C.P. IN
B-Y AGC
PLL
CLOCK
CLOCK IN
VSS
VIN1
VDD
VIN2
DET.
CCD
CCD
DET.
ADJ.
DET.
DET.
I 2 C GND
Y OUT
GND
DAC TEST
SDA
SCL
Ys
R-Y1 IN
B-Y1 IN
Y1 IN
R-Y2 IN
B-Y2 IN
Y2 IN
37
36
35
34
33
32
31
30
29
28
27
26
25
Y OFFSET
DAC
PEDESTAL
PEDESTAL
I2C BUS
Ys
SW
TEST
CLAMP
CLAMP
CONTROL
24
SW GND
OFFSET
SW
SUB.
Y DL
CONTRAST
HI : 2ch/LOW : 24h
23
ADRS SW
SW
22
R-V/R OUT
fsc
TRAP
21
SW
B-Y/B OUT
YUV
RGB
SW
MATRIX
SYSTEM
20
Y/G OUT
CW
TINT
MATRIX
fsc
19
SW Vcc
(9V)
DEMO
1H DL
18
SYNC Vcc
P/N ID
(9V)
CHROMA
CP/HP
SECAM
LPF / fsc
BLK
NOSE
17
CP/HP IN
TRAP
DET
IN
SW
16
Dig GND
TOF
BPF
V
H. AFC
H C/D
V C/D
SEP
APC
15
SCP OUT
SYNC
SCP
VCX0
SEP
ACC
32fH
SUB
COLOR
VCO
2
3
4
5
6
7
8
9
10
11
12
13
14
M-X'tal
3.58MHz
APC
C GND
C IN
V-SEP
SYNC
SYNC
H. AFC
SYNC
32fH
VD OUT HD OUT
X'tal
IN
OUT
GND
VCO
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
LOGIC
Point t (Pin 1 of IC711)
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Point y (Pin 3 of IC711)
1
8
+V
CC
2
7
OUT
2
+
–
+
–
3
6
–IN
2
4
5
+IN
2
Point u (Pin 12 of IC711)
* All voltages are measured with a 10M Ω /V DC electronic volt meter.
* Components having special characteristics are marked Z 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10MΩの電圧計で測定したものです。
* Z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ございます。
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