Yamaha DSP-AX757 Manual de serviço - Página 46
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A
B
C
SCHEMATIC DIAGRAM (SUBTRANS)
1
TO POWER CABLE
5.0
~
5.0
~
~
~
~
4.9
5.2
2
0
~
5.0
~
~
0.2
0
5.0
~
0.2
~
0
0
~
~
~
~
~
0
~
~
0
~
0
~
~
~
~
0
~
1.0
1.0
10.0
0.8
~
0
0.1
0.1
3
4
5
C-INPUT SELECTOR
0
4.7
0
0
0
0
0
0
0
0
4.9
-4.9
0
0
0
Y-INPUT SELECTOR
0
4.7
0
0
0
0
0
0
0
0
4.9
6
-4.9
0
0
0
7
4.8
4.8
0.9
0.1
-0.6
0.2
8
IC601, 602 : MM74HC4051SJX
Analog Multiplexers/Demultiplexers
INHIBIT
VDD
IC402 : TC4013BP
IC609, 903 : TC74HCU04AFEL
6
16
Dual D Flip Flop
Hex Inverters
A
11
LEVEL
B
10
CONVERTER
C
9
VSS
8
1A
1
14
V
VEE
1
DD
7
1Q
14
VDD
Q
X0
13
1Y
2
13
6A
2
13
1Q
Q
2Q
X1
14
Q
3
2Q
2A
3
12
6Y
1CP
CP
Q
12
X2
15
4
2Y
4
11
5A
X3
12
9
1CL
CL
CP
11
2CP
X4
1
5
3A
5
10
5Y
1DATA
D
CL
10
2CL
X5
5
1PR
6
3Y
6
9
4A
PR
D
9
2DATA
X6
2
2PR
VSS
7
PR
8
V
SS
7
8
4Y
X7
4
IC603, 604 : MM74HC4053SJX
Analog Multiplexers/Demultiplexers
VDD
16
X-COMMON
14
A
11
OUT C IN
12
OX
OUT C IN
13
IX
B
10
OUT C IN
2
OY
10
OUT C IN
1
IY
C
9
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
3
IZ
(Pin 6)
(Pin 9)
(Pin 10)
(Pin 11)
1X (Pin 13), 1Y (Pin 1), 1Z (Pin 3)
L
L
L
L
0X, 0Y, 0Z
INH
6
Z-COMMON
L
L
L
H
1X, 0Y, 0Z
4
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
D
E
F
HTR-5860
TO POWER TRANSFORMER
~
~
AC 152.6
Page 93
E-8
Page 94
C-9
~
TO SUBTRANS (3) CB601
TO CONVERSION (1) CB705
0
AC 7.5
~
~
Page 94
J-3
10.0
TO CONVERSION (2) CB832
Page 87
L-5
Page 93
G-3
10.0
TO FUNCTION (2) CB902
TO SUBTRANS (3) CB603
Page 93
I-3
TO SUBTRANS (2) CB462
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
-0.1
-0.5
0
4.3
-4.9
4.3
0
4.7
-0.2
-0.5
0
0
0
4.7
-0.2
0
-4.9
0
VIDEO DRIVER
0
4.7
0
-0.1
4.8
0
0
0
-0.1
4.1
0
4.7
-4.9
0
0
4.7
4.1
0
-4.9
0
-4.9
-4.9
-1.0
-4.9
-4.9
-1.8
0
4.7
0.5
0
-0.1
3.6
0
0
-0.1
0
4.7
-4.9
0
0
4.7
0
-4.9
4
Y/C MIX
4.8
-0.4
4.8
4.8
4.8
0.2
-0.2
0.9
1.6
0
0.6
0.3
0.9
0.5
1.0
0.5
-4.9
ON SCREEN
Page 93
D-2
TO SUBTRANS (8) CB445
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
INPUT STATES
"ON" CHANNEL (S)
SW
INHIBIT
C
B
A
0
0
0
0
0
SW
3
X
0
0
0
1
1
0
0
1
0
2
SW
0
0
1
1
3
SW
0
1
0
0
4
0
1
0
1
5
SW
0
1
1
0
6
SW
0
1
1
1
7
1
X
X
X
NONE
IC606 : LC74781-9798
On-screen Display Controller
CS
SERIAL
8 BIT
LATCH
SIN
+
PARALLEL
COMMAND
DECODER
SCLK
CONVERSION
HORIZONTAL
VERTICAL DIRECTION
DIRECTION
CHARACTER SIZE
CHARACTER SIZE
REGISTER
REGISTER
RST
HORIZONTAL
VERTICAL
SIZE COUNTER
SIZE COUNTER
VDD1
VSS1
VDD2
CHARA
SYNCHRONOUS
DISTINCTION
OSC IN
CHARACTER
OUTPUT
DOT CLOCK
OSC OUT
GENERATOR
TIMING
GENERATOR
SYN IN
COMPLEX
SYNCHRONOUS
SYNCHRONOUS
SEP C
SIGNAL
SEPARATION
SEPARATION
CONTROL
SEP OUT
CTRL
SEP IN
2
CTRL3
G
H
Page 87
B-2
TO FUNCTION (1) CB302
X: NOT USED
Page 94
B-3
Page 87
B-2
TO CONVERSION (1) CB704
TO FUNCTION (1) CB301
Page 93
D-3
TO SUBTRANS (7) CB447
REGULATOR
2.5
2.5
2.5
4.7
4.3
Page 90
G-10
0
0
4.8
TO MAIN (2) CB122
0
0
4.4
4.8
0.9
0.5
0.9
-0.5
0
0
Page 90
F-1
-0.6
TO MAIN (1) W10
0.2
REGULATOR
-0.6
-0.5
0
10.0
5.6
5.6
4.9
0
5.6
5.1
5.6
4.9
L
4.5
4.7
2
Page 89
TO OPERATION (1) CB801
HORIZONTAL
VERTICAL
FLASHING &
DISPLAY
RAM
DISPLAY
DISPLAY
CONVERSION
CONTROL
WRITE
POSITION
POSITION
CONTROL
ADDRESS
REGISTER
REGISTER
REGISTER
REGISTER
COUNTER
HORIZONTAL
VERTICAL
FLASHING &
DISPLAY
DOT COUNTER
DOT COUNTER
CONVERSION
DECODER
RAM
CONTROL
CIRCUIT
HORIZONTAL
VERTICAL
DISPLAY POSITION
DISPLAY POSITION
DETECTION
DETECTION
CHARACTER
LINE
CONTROL
CONTROL
DECODER
COUNTER
COUNTER
FONT ROM
ON SCREEN
SYNCHRONOUS
CHARACTER OUTPUT CONTROL
SHIFT
SIGNAL
BACKGROUND CONTROL
REGISTER
GENERATOR
VIDEO OUTPUT CONTROL
(Specifications for the beginnings of production) /
（生産初期の仕様）
CTRL
XTAL
XTAL
BLANK
CV
CV
1
IN
OUT
IN
OUT
I
J
K
X: NOT USED
X: NOT USED
Page 93
E-3
Page 87
L-1
Page 87
C-1
TO SUBTRANS (3) CB602
TO FUNCTION (1) CB303
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
0
4.9
4.9
CPU
4.9
4.9
2.1
0
4.9
0
4.9
4.9
4.9
4.9
0.4
2.1
3
0
CH 2
2
0.4
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
4.9
0.1
4.9
3
CH 1
4.9
4.9
4.3
0.1
5.0
0.1
4.9
0
D-8
Page 85
J-1
TO DSP CB1
4
IC901 : M35012-133SP
On-screen Display Controller
0.1/16
1
2
18
TIMING
SIGNAL
SEPARATION
TUNING
330
SIGNAL
CS
3
SELECTOR
OSC
INPUT
(DISPLAY)
SCK
4
CONTROL
H COUNTER
SIN
5
DATA
ADDRESS
DISPLAY
CONTROL
CONTROL
POSITION
DETECTOR
TIMING
GENERATOR
DISPLAY
CONTROL
ADDRESS READ
REGISTER
CONTROL
DISPLAY
DISPLAY DATA MEMORY
CONTROL
V
DD
1
20
BLANKING
SHIFT
DISPLAY CHARACTER ROM
AC
6
CIRCUIT
REGISTER
V
SS
11
V
DD
2
7
L
M
N
RX-V757/DSP-AX757/DSP-AX757SE
RX-V657/HTR-5860
IC607, 608 : TK15420M
Video Amp
OUT
1
1
8
+V
CC
–IN
2
7
OUT
1
2
+
–
+
–
+IN
1
3
6
–IN
2
–V
CC
4
5
+IN
2
IC605 : LA7109
75Ω Video Driver
VIN1+
1
36
+VCC1
NFB1
VOUT1
2
6dB
DR
35
MUTE1
3
34
GND
Page 87
E-1
VIN2+
VOUT2
TO FUNCTION (1) CB304
4
33
NFB2
5
6dB
DR
32
DR CTL2
–VCC1
6
31
VOUT3
VIN3+
MUTE4
7
30
NFB3
8
6dB
DR
29
–VCC4
N.C.
N.C.
9
28
N.C.
10
27
N.C.
VIN4+
11
26
+VCC2
NFB4
VOUT4
12
6dB
DR
25
MUTE2
13
24
GND
VIN5+
VOUT5
14
23
NFB5
15
6dB
DR
22
DR CTL1
–VCC2
16
21
VOUT6
VIN6+
MUTE3
17
20
NFB6
18
6dB
DR
19
–VCC3
Point w (Pin 13 of IC451)
Point e
CH 1 : Cathode of D452
CH 2 : Pin 12 of IC451
U, C only
↑
↑
AC POWER ON
AC POWER OFF
(Connect the power cable)
(Disconnect the power cable)
↑
AC POWER ON
(Connect the power cable)
Point r (Pin 3 of IC606)
19
* All voltages are measured with a 10M Ω /V DC electronic volt meter.
TUNING
17
OSC IN
* Components having special characteristics are marked Z and
SIGNAL
OSC
16
OSC OUT
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
TIMING
GENERATOR
8
CVIDEO
NTSC
* 電圧は、内部抵抗10MΩの電圧計で測定したものです。
VIDEO
9
LECHA
OUTPUT
10
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、
12
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。
13
P1
14
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。
15
P3
93