Yamaha RX-V757 Service Manual page 45

A B C
RX-V757/DSP-AX757/DSP-AX757SE
RX-V657/HTR-5860
SCHEMATIC DIAGRAM (SUBTRANS)
1
TO POWER TRANSFORMER (U, C, T, K, A, B, G, E, J)
or SUBTRANS (5) W291A (R, L)
Page 92 D-3
TO POWER CABLE
2
5.0
~
~
5.0 ~
~ ~
~
~
~
4.9
5.2 ~ ~
0
5.0 ~ ~
~ ~
0.2
~
0 5.0 ~
0.2 ~
0
0 ~ ~
~ ~
~
0
0 ~ ~ ~ 0
0
~ ~
~
~
3
~
0 10.0
~ 1.0 1.0 10.0
0.8
~ 0
0.1
0.1 10.0
4
5
C-INPUT SELECTOR
0 4.7
0 0
0 0
0 0
-0.2
0
0 4.9
-4.9 0
0 0
Y-INPUT SELECTOR
VIDEO DRIVER
6
0 4.7
0 0
0 0
0
0 0
0
0
0
0 4.9
0
-4.9 0
0
0 0
-4.9
0
0
-4.9
-4.9
0
0
3.6
0
0
-4.9
0
0
7
4.8
4.8
4.8 -0.4
0.2
0.9
0.1
-0.6
0.2 -0.2
0.5
1.0
0.5
-4.9
8
IC402 : TC4013BP IC609, 903 : TC74HCU04AFEL
Dual D Flip Flop Hex Inverters
1A 1 14 V
1 DD
1Q 14 VDD
Q
1Y 2 6A
2 13
1Q Q 13 2Q
Q
3 2Q 2A 3 12 6Y
1CP CP Q 12
9
2Y 4 11 5A
1CL 4 CL CP 11 2CP
3A 5 10 5Y
1DATA 5 D CL 10 2CL
1PR 6 3Y 6 9 4A
PR D 9 2DATA
VSS 7 PR 8 2PR V SS 7 8 4Y
IC603, 604 : MM74HC4053SJX
IC601, 602 : MM74HC4051SJX
Analog Multiplexers/Demultiplexers
Analog Multiplexers/Demultiplexers
INHIBIT VDD
6 16
A 11
LEVEL BINARY TO 1-OF-8 A 11
B 10
CONVERTER DECODER WITH INHIBIT
C 9
VSS 8
VEE 7 B 10
10
X0 SW
13
X1
14 SW
INPUT STATES
"ON" CHANNEL (S) C 9
X2
15 SW INHIBIT C B A
0 0 0 0 0
X3 X
12 SW 3 1
0 0 0 1
0 0 1 0 2
X4 1 SW
1 INH
0 0 1 3 6
X5 5 SW 0 1 0 0 4
1 0 1 5
0
X6 2 SW
0 1 1 0 6
0 1 1 1 7
X7 4 SW
1 X X X NONE
92
D E F
RX-V757/DSP-AX757/DSP-AX757SE/RX-V657
Page 94 I-3
TO CONVERSION (2) CB831
TO FUNCTION (1) CB302
Page 94 J-3
TO CONVERSION (2) CB832 TO FUNCTION (1) CB301
Page 92 G-8
TO SUBTRANS (2) W719B
AC 152.6
Page 92 E-8
TO CONVERSION (1) CB705
4 TO SUBTRANS (3) CB601
AC 7.5
~
Page 87
Page 92 F-4
TO FUNCTION (2) CB902
TO SUBTRANS (3) CB603
TO POWER TRANSFORMER
Page 92 H-3
TO SUBTRANS (2) CB462 TO SUBTRANS (7) CB447
0.7
S-SIGNAL DETECTOR
4.8
0
0.7 4.8
-0.1
0
0 0.7
4.8
0 0.9
0 0.3 2.5 2.5 2.5 2.5 2.5 2.5
-0.1 -0.5
0 4.3
-4.9 4.3
0 4.7
4.7 4.3
-0.5 0 0 0 4.7 0 0
-0.2
0
0
0 4.4
-4.9
0
4.7
-0.1
4.8
0
-0.1
4.7 4.1
0 0.9 0.5
0.9
4.7
4.1 -0.5 0 0
-4.9
0
-4.9 -1.0
0.2 -0.6
-4.9
-1.8
4.7 0.5
-0.6
-0.5
-0.1
0
0
-0.1
4.7
0
4.7
-4.9
4
Y/C MIX
4.8 4.8 4.8
0.9 1.6
0
0.6 0.3 0.9
ON SCREEN
Page 92 E-2
TO SUBTRANS (8) CB445
IC606 : LC74781-9798
On-screen Display Controller
CS
SERIAL 8 BIT
LATCH
SIN +
COMMAND
PARALLEL
CONVERSION DECODER
SCLK
HORIZONTAL VERTICAL DIRECTION HORIZONTAL VERTICAL
DIRECTION CHARACTER SIZE DISPLAY
CHARACTER SIZE POSITION POSITION
REGISTER REGISTER REGISTER REGISTER
RST
HORIZONTAL VERTICAL HORIZONTAL VERTICAL
SIZE COUNTER SIZE COUNTER DOT COUNTER DOT COUNTER
VDD1
VSS1
HORIZONTAL VERTICAL
DISPLAY POSITION DISPLAY POSITION
DETECTION DETECTION
VDD2
CHARACTER
CHARA CONTROL CONTROL
COUNTER COUNTER
SYNCHRONOUS
DISTINCTION
VDD
OSC IN CHARACTER
16 OUTPUT
DOT CLOCK
OSC OUT GENERATOR SYNCHRONOUS
TIMING
GENERATOR SIGNAL
SYN IN GENERATOR
COMPLEX
14 X-COMMON SYNCHRONOUS SYNCHRONOUS
SEP C SIGNAL
SEPARATION SEPARATION
CONTROL
SEP OUT
OUT C IN 12 OX
CTRL CTRL XTAL
SEP IN
2 1 IN
OUT C IN 13 IX CTRL3
OUT C IN 2 OY
OUT C IN 1 IY
OUT C IN 5 OZ
CONTROL INPUTS "ON" CHANNEL
INHIBIT C B A 0X (Pin 12), 0Y (Pin 2), 0Z (Pin 5)
OUT C IN IZ
3 (Pin 6) (Pin 9) (Pin 10) (Pin 11) 1X (Pin 13), 1Y (Pin 1), 1Z (Pin 3)
L L L L 0X, 0Y, 0Z
L L L H 1X, 0Y, 0Z
4 Z-COMMON
L L H L 0X, 1Y, 0Z
L L H H 1X, 1Y, 0Z
15 Y-COMMON L H L L 0X, 0Y, 1Z
L H L H 1X, 0Y, 1Z
L H H L 0X, 1Y, 1Z
L H H H 1X, 1Y, 1Z
8 7
H * * * NOTE
VSS VEE
* Don't Care
G H
Page 87 B-2
Page 87 B-2
UU24933 UU24933 UU24933 UU24933 UU24933 UU24933 UU24933
3300/25 3300/25 3300/25 3300/25 3300/25 3300/25 3300/25
Page 94 C-9
Page 94 B-3 Page 92 E-4
TO CONVERSION (1) CB704 TO SUBTRANS (3) CB602
L-5
Page 92 E-3
REGULATOR
Page 90 G-10
4.8
0
TO MAIN (2) CB122
4.8
2.1
0
0.4
4.9
4.9
Page 90 F-1
TO MAIN (1) W10
REGULATOR
3
CH 1
10.0 5.6 5.6 4.9 4.9 4.9
0
4.3
5.6 5.1
5.6 4.9
0.1 5.0
0.1
L 4.9
0
4.5
4.7
Page 92 E-2
Page 88 C-8
TO SUBTRANS (4) W719A
TO OPERATION (1) CB801
FLASHING & DISPLAY RAM
DISPLAY CONVERSION CONTROL WRITE
CONTROL ADDRESS
REGISTER REGISTER COUNTER
FLASHING & DISPLAY
CONVERSION DECODER RAM
CONTROL
CIRCUIT
LINE
DECODER
FONT ROM
0.1/16
CHARACTER OUTPUT CONTROL
SHIFT
BACKGROUND CONTROL REGISTER
VIDEO OUTPUT CONTROL
330
XTAL BLANK CV CV
OUT IN OUT
ON SCREEN
(Specifications for the beginnings of production) /
（生産初期の仕様）
I J K
DSP-AX757 RX-V757/RX-V657 DSP-AX757SE RX-V757 RX-V657
UU24933 UU24933
3300/25 3300/25
X: NOT USED
X: NOT USED
X: NOT USED
X: NOT USED
Page 87 C-1 Page 87 E-1
Page 87 L-1
TO FUNCTION (1) CB303 TO FUNCTION (1) CB304
TO FUNCTION (2) CB901
SW
4.9
-12.0 4.9
4.9
-12.0 4.9
4.9
-12.0 4.9
4.9
4.9 4.2
0
0
4.9
4.9
4.9 0.1
4.9 0.1
4.9 0.1
4.9 4.9
CPU
4.9 4.9
0 4.9
4.9 4.9
4.9 4.9
2.1 3 0
2
0.4 CH 2 4.9
4.9 4.9
1.0 4.9
4.9 4.2
4.9 4.9
0 4.9
3.6 0.1
4.9 0
4.9 0.1
4.9 0.1
2
Page 85 J-1
TO DSP CB1
4
IC901 : M35012-133SP
On-screen Display Controller
1 2 18 19
TIMING
SIGNAL
SEPARATION TUNING
SIGNAL
CS 3 SELECTOR
OSC
INPUT (DISPLAY) TUNING 17
SCK 4 SIGNAL
CONTROL
H COUNTER OSC 16
SIN 5
DATA ADDRESS DISPLAY
CONTROL CONTROL POSITION
DETECTOR
TIMING TIMING
GENERATOR GENERATOR
DISPLAY
CONTROL ADDRESS READ
REGISTER CONTROL
8
NTSC
DISPLAY
DISPLAY DATA MEMORY VIDEO 9
CONTROL
OUTPUT
10
V DD 1 20 12
BLANKING SHIFT
DISPLAY CHARACTER ROM
AC 6 CIRCUIT REGISTER 13
V SS 11 14
V DD 2 7 15
L M N
DSP-AX757 RX-V757/RX-V657 DSP-AX757SE RX-V757 RX-V657
X: NOT USED
DSP-AX757 RX-V757/RX-V657 DSP-AX757SE RX-V757 RX-V657
X: NOT USED
IC453 : LC72722PM
RDS Decoder
1 5 6
VDDA 3 + CLOCK 14
PLL
RECOVERY
REFERENCE (57kHz)
(1187.5Hz)
VOLTAGE
VSSA 4 15
VREF
57kHz
SMOOTHING DATA
MPX IN ANTIALIASING
2 bpf 19
FILTER FILTER DECODER
(SCF)
DO
20
CL 21 18
RAM ERROR CORRECTION SYNC/EC
DI 22 CCB (24 BLOCK DATA) (SOFT DECISION) CONTROLLER
24
CE 23
CLK(4.332MHz)
T1 7
MEMORY
T2 CONTROL
8 TEST SYNC SYNC
DETECT-1 DETECT-2
T3 9 OSC/DIVIDER
T4 10
11 16 17 13 12
IC605 : LA7109
IC607, 608 : TK15420M
75Ω Video Driver
Video Amp
VIN1+ +VCC1
1 36
OUT 1 1 8 +V CC
NFB1 2 6dB DR 35 VOUT1
–IN 1 2 7 OUT 2
+ – + –
+IN 3 6 –IN
1 2
MUTE1 3 34 GND
–V 4 5 +IN
CC 2
VIN2+ VOUT2
4 33
NFB2 5 6dB DR 32 DR CTL2
Point w (Pin 13 of IC451)
–VCC1 6 31 VOUT3
VIN3+ 7 30 MUTE4
NFB3 8 6dB DR 29 –VCC4
N.C. N.C.
9 28
N.C. 10 27 N.C.
VIN4+ +VCC2
11 26
NFB4 12 6dB DR 25 VOUT4
MUTE2 13 24 GND
Point e
CH 1 : Cathode of D452 VIN5+ VOUT5
14 23
CH 2 : Pin 12 of IC451
NFB5 15 6dB DR 22 DR CTL1
–VCC2 16 21 VOUT6
VIN6+ 17 20 MUTE3
NFB6 18 6dB DR 19 –VCC3
↑ ↑
AC POWER ON AC POWER OFF
(Connect the power cable) (Disconnect the power cable)
Point r (Pin 3 of IC606)
↑
AC POWER ON
(Connect the power cable)
* All voltages are measured with a 10M Ω /V DC electronic volt meter.
OSC IN * Components having special characteristics are marked Z and
OSC OUT
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
CVIDEO
* 電圧は、内部抵抗10MΩの電圧計で測定したものです。
LECHA
CVIN * 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、
P0
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。
P1
P2
* 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。
P3
O
VDDD
VSSD
RDS-ID
SYNC
SYR