Yamaha RX-V757 Service Manual page 47

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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