Yamaha RX-V2400, Service Manual

Page: 94 / 147

A
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5
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8
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10
B C D E F G H I J K L M N
RX-V2400/RX-V2400RDS/DSP-AX2400/RX-V1400/RX-V1400RDS/HTR-5690/DSP-AX1400
SCHEMATIC DIAGRAM (VIDEO)
94
INPUT SELECTOR
INPUT SELECTOR
REC OUT SELECTOR
REC OUT SELECTOR
REC/SOURCE SELECTOR
SELECTOR
ON
SCREEN
RX-V2400/RX-V2400RDS/DSP-AX-2400
I 2 C Bus Interface
Output
Data Latch
8
Output Data
Reset
Input Data
I/O Port
Shift Register
3 SDA
1 SO
16
CS0
15
CS1
14
CS2
12
D7
11
D6
10
D5
9
D4
7
D3
6
D2
5
D1
4
D0
2 SCL
8 GND
13 VDD
IC551: M62320FP
I/O Expander
8
I/O Setting
Register
8
Input/Output
8
I/O Setting
Register
8
8
Power On
Reset
IC552: 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, 612: 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
IC602~605, 703, 704: MM74HC4051SJX
8-Channel Analog Multiplexer
16
11
10
9
7
VSS
8
GND
C
B
A
VCC
4
Y7
1
Y4 Y5 Y6
12
Y3
2 5 15
Y2
IN/OUT
14
Y1
13
Y0
COMMON
OUT/IN
6
INH
Logic
Level
Conversion
Binary to 1
of 2 Decoders
with INHBIT
TG
TG
TG
TG
TG
TG
TG
TG
3
IC606, 607, 610, 702: MM74HC4053SJX
Triple 2-Channel 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
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
75
Ω
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: 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
Synchronisation
signal generator
Character output control
Background control
Video output control
Display
control
register
RAM
write
address
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
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
IC705: 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
IC801: ADM202JRN-REEL7
RS-232 Driver/Receiver
1
3 2
16 C1+
C1–
Vcc
V+
11
14
T1in
T1out
+5V
→
+10V
Voltage Boost
Circuit
4
5
6
C2+
C2–
V–
+10V
→
–10V
Voltage Inverter
T1
10 7
T2in
T2out
T2
12 13
R1in
R1out R1
9 8
15
R2in
R2out
GND
R2
15
3
1
2
4
5
11
10
7
8
13
12
4
8
8
4
x: NOT USED
O: USED / APPLICABLE
RS-232C DRIVER/RECEIVER
INPUT SELECTOR
REC OUT
SELECTOR
REC/SOURCE
SELECTOR
P
age 90 to FUNCTION
M3
P
age 93
to PO
WER (3)
G7
P
age 96
to CONVERSION
D9
P
age 96
to CONVERSION
C1
P
age 93
to PO
WER (7)
H3
P
age 89
to FUNCTION
B1
P
age 89
to FUNCTION
C1
Page 91
to OPERATION (3)
I3
Page 90
to FUNCTION
F9 Page 90
to FUNCTION
E9
Point 4 Pin 3 of IC511
★
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.
5.5
5.5
5.5
5.5
0
0
5.5
0
0
0
5.5
5.4 11.5
5.6
5.2
0
5.6
0
0
4.0
0
5.5
0
0
0
0
0
0
-5.0
0
5.6
0
0
0.2
0
0
0.2
5.6
0
0
0
4.0
0
0
0
0
4.4
5.5
0.1
0.1
5.4
0.5
-5.0
5.5
0
0.1 0.1 0.1 0.1 4.9
0.2 5.6 5.6 0 4.5 0.2 4.0 4.0
-5.0
0
5.4
1.1
0.1
0.1
5.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0
0
0
0
0
0.1
0.1
5.3
0.1
0
0
0
0
4.0
-4.8
0
0
-4.8
3.9
-4.8
0
0
0
0
0
-4.8
5.3
0.1
0.5
5.3
0
0
0
5.3
0
0
0
5.3
0
5.3
4.8
4.8
4.8
-4.8
5.3
0
1.1
1.1
1.4
4.8
4.8
5.3
0.1
0.1
0
0
-4.8
0
0
0
5.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0
0.1
0
0
0
5.3
0
0
0
1.4
0
0
-4.8
5.3
0.4
0.1
5.3
-0.6
0.1
5.3
0.1
0
0
-4.8
1.4
0
0
5.3 1.1 0.1 0.1 0.1 0.5 0.5 3.9
1.4 1.1 1.1 1.1
0 0
-4.8
0 1.1
1.1
5.3
1.1
0.1
0.5
5.3
1.1
1.1
5.3
1.8
-0.6
0
5.2 0 0 5.2 0 0
1.8
5.2 2.1 5.2 0.9
2.6 2.7
0
5.3 2.6
2.6
4.8 4.9
0
5.2
0
-0.5
-0.5
0.4
-0.4
-0.4
0.9
0.9
5.3
0.3
0
4.6
4.6
-1.8
-1.1
5.3
5.3
2.9
0.1 0
0
0.1 0.1 0 0
0 3.9 4.4
4.4
0 4.8
0.1
0
2.9
2.8
2.9 2.9
4
2.2K
390
390
150K
150K
20K
430
22K
FRONT R
FRONT L