Yamaha RX-V1200 RDS, Service Manual

Page: 75 / 106

A
1
2
3
4
5
6
7
8
9
B C D E F G H I J K L
RX-V1200/RX-V1200RDS/HTR-5490/DSP-AX1200/RX-V2200/DSP-AX2200
E-96/J-90
SCHEMATIC DIAGRAM (RX-V1200/RX-V1200RDS/HTR-5490/DSP-AX1200 VIDEO)
★ All voltages are measured with a 10MΩ /V DC electric 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.
x: NOT USED
O: USED / APPLICABLE
IC581: LC72722
RDS Decoder
+
REFERENCE
VOLTAGE
57kHz
bpf
(SCF)
CCB
TEST
PLL
(57kHz)
ANTIALIASING
FILTER
SMOOTHING
FILTER
RAM
(24 BLOCK DATA)
ERROR CORRECTION
(SOFT DECISION)
SYNC/EC
CONTROLLER
SYNC
DETECT-1
DATA
DECODER
CLOCK
RECOVERY
(1187.5Hz)
MEMORY
CONTROL
OSC/DIVIDER
VREF
CLK(4.332MHz)
SYNC
DETECT-2
VDDA
VSSD
VDDD
RDS-ID
SYNC
SYR
VSSA
MPX IN
DO
CL
DI
CE
T1
T2
T3
T4
T5 T6 T7
X IN
VREF FL OUT C IN
X OUT
3 14
15
19
18
24
1 5 6
4
2
20
21
22
23
7
8
9
10
11 16 17 13 12
IC601: 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
IC602, 603: TC74HC4051AP
Analog Multiplexer/Demultiplexer
IC607: TC74HC4053AP
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
IC608: TC74HCU04AFEL
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
IC609: LA7109
75Ω Video Driver
35 VOUT1
33 VOUT2
31 VOUT3
30 MUTE4
29 -VCC4
32 DR CTL2
36
+VCC1
34 GND
2 NFB1
4 VIN2+
6 -VCC1
7 VIN3+
8 NFB3
28 N.C.
27
N.C.
26 +VCC2
9 N.C.
10 N.C.
11 VIN4+
5 NFB2
1
VIN1+
3 MUTE1
DR 6dB
DR 6dB
DR 6dB
25 VOUT4
23 VOUT5
21 VOUT6
20 MUTE3
19 -VCC3
22 DR CTL1
26
24 GND
12 NFB4
14 VIN5+
16 -VCC2
17 VIN6+
18 NFB6
15 NFB5
11
13 MUTE2
DR 6dB
DR 6dB
DR 6dB
IC611: BU2092
Serial In/Parallel Out Driver
1
Vss
2 DATA
3 CLOCK
4 LCK
5 Q0
6 Q1
7 Q2
8 Q3
9
Q4
18
VDD
17 OE
16 Q11
15 Q10
14 Q9
13 Q8
12 Q7
11 Q6
10
Q5
Control
Circuit
Output Buffer (Open Drain)
Latch
12 Bit Shift Register
IC610: LC74781-9798
On Screen Display Controller
CS 9
RST 23
VSS1 1
SIN 11
SCLK 10
OSCIN 6
OSCOUT 7
SYNIN 17
SEPC 18
SEPOUT 19
CHARA 8
VDD2 12
SEPIN 20
CTRL3 22
4
CTRL1 XtalIN XtalOUT BLANK CVIN CVOUT CTRL2
21 2 3 5 15 13
VDD1 24
Serial
parallel
converter
8-bits
latch
+
command
decoder
Horizontal
character
size
register
Horizontal
size
counter
Horizontal
display
position
register
Horizontal
dot
counter
Vertical
display
position
register
Vertical
dot
counter
Blinking
and inversion
control
register
Blinking
and inversion
control
circuit
Blinking
and inversion
control
register
Blinking
and inversion
control
register
Character
control
counter
Line
control
counter
Timing generator
Synchronization
signal generator
Character output control
Background control
Video output control
Display
control
register
RAM
write
adress
counter
Display
RAM
Vertical
character
size
register
Vertical
size
counter
Decoder
Font
RAM
Shift
register
Decoder
Horizontal
character
size
register
Horizontal
character
size
register
Horizontal
character
size
register
Horizontal
character
size
register
IC702: TC74HC4051AFEL
Analog Multiplexer/Demultiplexer
16
VCC
6
INHIBIT
11
3
9
A
C
B
8
GND
7 VEE
13
0
14 1
15
2
12 3
1 4
5
5
LEVEL
CONVERTER
10
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
2 6
4
7
SW
SW
COM
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNNEL
0
1
2
3
4
5
6
7
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
IC751: MM74HC4053SJX
Analog Multiplexer
16
11
10
4
7
OUT/IN
AX or AY
VSS
8
GND
C
B
A
VCC
3
CY
5
CX
1
BY
2
BX
IN/OUT
13
AY
12
AX
TO
Logic
Level
Conversion
Logic
Level
Conversion
Logic
Level
Conversion
OUT/IN
CX or CY
OUT/IN
BX or BY
9 INH
Logic
Level
Conversion
Binary to 1
of 2 Decoders
with INHBIT
Binary to 1
of 2 Decoders
with INHBIT
Binary to 1
of 2 Decoders
with INHBIT
YG
TG
TB
TC
TG
15 VOUT1
13 VOUT2
11 VOUT3
10 MUTE3
9 -VCC2
12 MUTE2
16 +VCC
14
GND
2 NFB1
4 VIN2+
6 -VCC1
7 VIN3+
8 NFB3
5 NFB2
1 VIN1+
3 MUTE1
DR 6dB
DR 6dB
DR 6dB
IC701: LA7108M
Video Amp
Y SELECTOR
Cb SELECTOR
Cr SELECTOR
ON
SCREEN
B3
E-92/J-86
C3
E-92/J-86
D8
E-92/J-86
E-92/J-86
E-92/J-86
G8
I5
E-99/J-93
C3
E-94/J-88 to OPE (4)
G5
1
7
7
3
2
5
6
5
6
1
7
7
3
2
1
3
2
7
6
5
5
(see page E-98/J-92)
4
(see page E-98/J-92)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4.9
4.9
0
0
0
0
-4.9
-4.9
0
0
4.9
4.6
-4.9
0
0
0
0
0
0
0
-4.9
0.3
4.9
1.0
0
0
0
0
4.9
0
0
0
0
0
-4.9
0
0
0
0
0
0
4.6
4.6
0
0
0
0
4.9
0
-4.9
4.8
11.9
0
2.2 2.2 4.4
0 2.2 2.2 0 0 1.9
0 0 4.8 4.8 4.8 1.8
11.9
5.5
5.5
0.5
0
0
0
0
0
0
0
0
0
0 0
0
-4.8
0 4.7
4.7
4.6
0
0
0
0
0
0
0
0
0 0
0
-4.8
0 4.7
4.7
4.6
0
0.9
0.7
4.7
0
0.9
1.6
4.7
0.2
0
-0.6
0.9
1.5
0.9
4.6
0
-4.8
0
0
4.7
0
-4.8
0
0
4.7
0
0
4.7
0
0
0
0
-4.8
0
0
-4.8
-4.8
0
0
0
0
0
-4.8
0
0
0
0
4.7
-4.8
-4.8
4.7
0
0
0
0
-4.8
0.9
0
0
4.7
4.3
4.3
4.6
0.9 0.9
0
-4.8
0
1.5
2.1
0.9
0
1.5
0.8
0
0
0
0 4.0
2.3 2.3 4.8 4.8 0 4.7
4.8 0 4.6 4.6 0
4.6 4.6
0 0 0 4.6 0 2.1 0 4.6
0 0
1.6 0 0.9 4.6 1.8 0 4.6 0 4.6
4.6
4.6
2.3 2.2 0
0
-0.6
0.8 0.9
-0.5
0.2
4.0
0
4.7
0
0
0
4.3
4.7
0 0
0
0
4.7
2.4
2.4 2.4
2.4
2.4
4.7
2.1
4.3
1.7
4.0
-1.6
1.6
-0.6
-0.5
R688
4.7
R687
10K
220/6.3
C653
220/6.3
1K
C715
330/6.3
2.2K
K KOREA
+5.5V
+5.5V