Yamaha RX-V1500, Руководство по обслуживанию

Страница: 85 / 125

A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
RX-V1500/DSP-AX1500
SCHEMATIC DIAGRAM (CONVERSION)
IC801~803: TC74HC4052AF
Analog Multiplexer/Demultiplexer
16
VCC
6
INH
10 A
9
B
8 GND
7 VEE
12 0X
14 1X
15 2X
11 3X
1 0Y
5 1Y
2 2Y
4 3Y
LEVEL
CONVERTER
BINARY TO 1-OF-4
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
SW
SW
13 X-COM
3 Y-COM
INHIBIT
0
0
0
0
1
B
0
0
1
1
X A
0
1
0
1
X
0x, 0y
1x, 1y
2x, 2y
3x, 3y
NONE
IC804: NJM2581M
Video Amp
13 VOUT1
11 VOUT2
9 VOUT3
8 GND
10
V+3
14 V+1
12 V+2
2
NEE1
4 VEE2
6 VEE3
7 PowerSave
5
VIN3
1 VIN1
3
VIN2
75
Ω
Driver
6dB
AMP
BIAS
75 Ω
Driver
6dB
AMP
BIAS
75 Ω
Driver
6dB
AMP
BIAS
REF
IC805, 811: SN74LVU04APWR
Hex Inverters
1A
1Y
2Y
VCC
6A
1
2
3
4 11
2A 6Y
5A
12
13
14
3A
3Y
5Y
4A
5
6
7 4Y 8
9
10
GND
IC806: TC90A49F
3 Line Digital Y/C Separator
15
CKIN
17
FIL
24
8 fsc
4 fsc
5 AIN
Y OUT
LINE
MEMORY
C-BPF
LINE
MEMORY
+
–
C-BPF
DYNAMIC COMB FILTER
VERTICAL EDGE
ENHANCEMENT CIRCUIT
ANALOG
THROUGH MODE
C-BPF KILLER
Y-LPF ADC
COLOR
Y DAC
C-BPF Trap C-LPF C DAC
1/2
CLAMP
PLL
11
SDA
12
SCL
13
TEST
14
KILLER
I2C BUS
20 C OUT
32fH
VCO
NOSE
DET
H. AFC
IC808: TA1270BF
Sync Processing System
35
DAC TEST
36
GND
VCX0
V
SEP
CW
MATRIX
34
SDA
33
SCL
32
Ys
31
R-Y1 IN
30
B-Y1 IN
29
Y1 IN
28
I2C GND
27
R-Y2 IN
26
B-Y2 IN
25
Y2 IN
4 3 5 6 7 8 9 10 11 12 13 14
15
APC 3.58MHz
X'tal
37
Y OUT
38
DAC2
2 1
M-X'tal 4.43MHz
X'tal
C GND C IN V-SEP SYNC
IN
SYNC
OUT
H. AFC SYNC
GND
32fH
VCO VD OUT HD OUT
SCP OUT
16 Dig GND
17 CP/HP IN
18 SYNC Vcc
(9V)
19 SW Vcc
(9V)
20 Y/G OUT
21 B-Y/B OUT
22 R-V/R OUT
23 ADRS SW
24 SW GND
48
R-Y/Cr OUT
47 B-Y/Cb OUT
46
SECAM CONT
45 1HDL CONT
44 fsc OUT
43 UV/CbCr SW
42 C Vcc
(5V)
41 DAC Vcc
(5V)
40 Y IN
39 DAC1
LPF / fsc
TRAP
CbCr / UV
SW
SECAM
CONTROL
ACC
fsc
APC
DAC2 Ys
TOF
SYSTEM
SW
P/N ID
DAC
TEST
DEMO
OFFSET
SW
TINT
SYNC
SEP
SUB
COLOR
CP/HP
IN
CHROMA
BLK
BPF
SW
SW
1H DL
CONTROL
PEDESTAL
CLAMP
DAC1
SCP
SW
H C/D V C/D
Y DL
Y DL
fsc
TRAP
SUB.
CONTRAST
YUV
→
RGB
MATRIX
Y OFFSET
SW
PEDESTAL
CLAMP
PEDESTAL
CLAMP
HI : 2ch/LOW : 24h
I2C BUS
CONTROL
IC809: TC74HC4053AF
Analog Multiplexer/Demultiplexer
16
VDD
6
INHIBIT
11
15
14
9
A
C
B
8 VSS
7 VEE
12 0X
13 1X
2 0Y
1 1Y
5 0Z
3 1Z
LEVEL
CONVERTER
10
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
4 Z-COM
X-COM
Y-COM
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNNEL (S)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NONE
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
IC810: TK15420M
Video Amp
– +
1
2
3
4 5
– +
6
7
8
OUT A
–IN A
+IN A
VEE
VCC
OUT B
–IN B
+IN B
COMPONENT
CONVERSION
SELECTOR
SELECTOR
SELECTOR
Page 84
to VIDEO (8)
H9
Page 84
to VIDEO (2)
F4
★
All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
★
Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
Point 5 Pin 3 of IC808 Point 6 Pin 12 of IC808
3
2
5
7
6
1
85
J model only
5 6
0.1 0
0
5.3
5.3
5.3
2.8 2.8 2.8 2.8 2.7
5.3
0
0.1
0.1 0.1
0
0
0
0
0
0
0.1
0.1 0.1
0
0
0
0
0
-4.9
-4.9
-4.9
0.1
5.3
0
5.3
0
0
0
5.3
0.1
0.1
0.1
0.1
0
4.9
0
0.1
0.1
0.1
5.3
0.1
0.1
0.1
0.1
2.8
5.3
2.8 2.8 2.8 2.7
0 5.7
0
0
0.1
0
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0
-4.9
0
0 5.7
0
0.1
0.1
0
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0
0
0
2.4
5.2
5.2
5.1
5.5
5.5
3.3
0
0
0
0
1.9
3.3
2.4
0
5.1
1.8
2.6
5.1
0
2.4
5.1
1.3
1.3
0.7
5.1
2.1
4.5
-4.9
4.5
5.1
3.6
2.4
5.2
1.3 1.3
0.7
5.2
2.1
4.5
-4.9
4.5
5.2
3.6
9.8
9.8
0
9.2 11.7
1.3
0.1
0.6
5.2
-3.3
-2.7
0
0
0
1.3
3.6 1.3
3.6
-3.3 -3.3
-0.1
-0.3
5.1
-0.3
0
0
-4.9
0
0
-4.9
0
0
5.1
5.1
5.1
5.1
5.1
5.1
0
1.6
0.1
2.5
2.4
2.4
5.1 0
5.5 5.5 4.3 5.7 5.7
2.2
5.8 5.8 5.8 5.8
0
0
4.5
4.5
9.1
9.1
0.8
0
0
1.2
4.2
0 0
1.1
0 0
4.2
0 0
6.0
3.3K 560P
22PCH
3.3K 560P
22PCH
R919
220
R917
220
R918
220
CONVERSION