Yamaha RX-V2400 Service Manual page 94

A B C
RX-V2400/RX-V2400RDS/DSP-AX2400/RX-V1400/RX-V1400RDS/HTR-5690/DSP-AX1400
SCHEMATIC DIAGRAM (VIDEO) RX-V2400/RX-V2400RDS/DSP-AX-2400
1
2
Page 90 E9 Page 90 F9
to FUNCTION to FUNCTION
3
4
5
INPUT SELECTOR
6
0.1 5.3
0.1 0.1
0.1 0.1
0 0.1
0 0.1
0 0.1
0 0.1
0 0.1 0
0
INPUT SELECTOR
0 5.3
0 0.1
0.1 0.1
0 0.1 0
0.1 0.1 0
0 0.1
0 0.1
0 0.1
7
REC OUT SELECTOR
REC/SOURCE SELECTOR
REC OUT SELECTOR
8
5.3 5.3
5.3 8
0
0.1 0.1 0.1
-0.6 0
0.4
0
1.4
4
0
-4.8
9
Point 4 Pin 3 of IC511
10
94
D E F
0
5.5 11.5 5.4
0
5.5
0
5.6
5.5 5.5
5.5 4.0
0
5.5 0 5.2
0 5.5 5.6
0
0
0
Page 91 I3
to OPERATION (3)
5.3 5.3
4
0 5.3
0.1
0.1 0.1 5.3
0.1 1.1 2.8
0.1 1.1 2.9 2.9 2.9 2.9
22K
1.4
0
0 4.8
-4.8 4.8
0 5.3
SELECTOR
1.4 0.1 0.1 0.1 0 0 0 0 4.8
8 0
0.1
-4.8
0 3.9
0
0 5.3 5.3
0
0
4.6
4.0 0
0.9
0 0
0 5.3 0.9
4.6 -0.4 0
-4.8 0
0.1
0 5.3 -1.1
-0.5
0 4.8 0.3
0.5 -1.8
-4.8 4.8
-4.8 4.8
-0.4
0 5.3
0 0
0
3.9
0 0
0 5.3
-4.8 0
5.3
0 -4.8
4
ON
SCREEN
5.3 5.3
5.3
1.1 1.8
0.1
1.1 0.5 1.1
1.1 1.1
-0.6
IC551: M62320FP IC552: LC72722
I/O Expander RDS Decoder
16 15 14 1 5 6
VDDA 3
REFERENCE
SCL 2 VOLTAGE
I 2 C Bus Interface VSSA
4
SDA 3 VREF
Shift Register 1 SO
57kHz
ANTIALIASING SMOOTHING
Output Data Input/Output MPX IN 2 bpf
FILTER FILTER
(SCF)
8 8 8
DO 20
Output I/O Setting I/O Setting
CL 21
RAM ERROR CORRECTION
Data Latch Register Register
DI 22 CCB (24 BLOCK DATA) (SOFT DECISION)
CE 23
8 8 8
T1 7
Reset Input Data MEMORY
T2 CONTROL
8 TEST
VDD 13
Power On
I/O Port T3 9
Reset
GND 8 T4 10
12 11 10 9 7 6 5 4
11 16 17
G H
INPUT SELECTOR
0 5.6
0 0
0 0
0 0.2
0 0
0 5.5
-5.0 0.1
0 0.1
0 1
15
2 0.2
0 3
5.6
REC OUT
SELECTOR
REC/SOURCE
SELECTOR
4
11 0
4.0 5
10 0
0
7
13 0
0 8
12
4.4 0
5.4
5.4
1.1
0
0.5
-5.0
-5.0
RS-232C DRIVER/RECEIVER
4.4
4.4
0.4
-0.5
0
IC601, 612: TK15420M IC602~605, 703, 704: MM74HC4051SJX
Video Amp 8-Channel Analog Multiplexer
VCC Y7
16 4
OUT A 1 8 VCC
+ CLOCK 14 VDDD
PLL
RECOVERY
(57kHz)
(1187.5Hz)
–IN A 2 7 OUT B
+ – + –
15 VSSD
A 11
+IN A 3 6 –IN B
DATA
19 RDS-ID
DECODER
VEE 4 5 +IN B
10
B
Logic Binary to 1
Level of 2 Decoders
Conversion with INHBIT
18 SYNC
SYNC/EC 9
C
CONTROLLER
24 SYR
CLK(4.332MHz)
6
INH
SYNC SYNC
DETECT-1 DETECT-2
OSC/DIVIDER
8 7
GND VSS
13 12
I J K
FRONT R
FRONT L
x: NOT USED
O: USED / APPLICABLE
IC606, 607, 610, 702: MM74HC4053SJX
Triple 2-Channel Analog Multiplexer
IN/OUT IN/OUT
Y6 Y5 Y4 Y3 Y2 Y1 Y0 VCC CY CX BY BX AY AX
2 5 1 12 15 14 13 16 3 5 1 2 13 12
TG TO
Logic
TG Binary to 1
A 11 Level of 2 Decoders YG
Conversion with INHBIT
TG
TG Logic TG
COMMON 10
3 B Level
OUT/IN
Conversion Binary to 1
TG
of 2 Decoders TB
with INHBIT
Logic
TG 4
C Level
Conversion TC
TG
Binary to 1
Logic
TG 9 of 2 Decoders TG
INH Level
with INHBIT
Conversion
8 7
GND VSS
L M N
# All voltages are measured with a 10MΩ/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.
IC705: BU2092 IC801: ADM202JRN-REEL7
Serial In/Parallel Out Driver RS-232 Driver/Receiver
+5V → +10V
C1+ Vcc
1 16
Vss 1 18 VDD Voltage Boost
C1– 3 2 V+
Circuit
DATA 2 17 OE
C2+ 4
CLOCK 3 Control 16 Q11 +10V → –10V
Circuit 6 V–
Voltage Inverter
LCK 4 15 Q10 C2– 5
Q0 5 14 Q9
T1in 11 T1 14 T1out
Q1 6 13 Q8
Q2 7 12 Q7
T2in 10 T2 7 T2out
Q3 8 11 Q6
Q4 9 10 Q5
R1in 12 R1 13 R1out
R2in 9 8
R2 R2out
GND
15
IC701: LA7108M
Video Amp
VIN1+ 1 16 +VCC
NFB1 2 6dB DR 15 VOUT1
MUTE1 3 14 GND
VIN2+ VOUT2
4 13
6dB DR
NFB2 5 12 MUTE2
-VCC1 6 11 VOUT3
VIN3+ 7 6dB DR 10 MUTE3
NFB3 8 9 -VCC2
IC611: LC74781-9798
On Screen Display Controller
CS 9
8-bits
Serial
latch
SIN 11 +
parallel command
converter RAM
SCLK 10 decoder Horizontal Vertical Horizontal Vertical Blinking
Display
character character display display and inversion write
control
size size position position control address
register
register register register register register counter
RST 23
Blinking
Horizontal Vertical Horizontal Vertical
and inversion Display
VDD1 24 size size dot dot
control RAM
counter counter counter counter
circuit
VSS1 1
VDD2 12 Blinking Blinking
and inversion and inversion
control control
CHARA 8 register register
Character Line Decoder
control control
counter counter
Horizontal
character
Font
size
Horizontal RAM
OSCIN 6 register
character
size
OSCOUT
7
register Shift
Character output control
Synchronisation register
Timing generator Background control
SYNIN 17 signal generator
Horizontal Horizontal Video output control
character character
SEPC 18
size size
register
SEPOUT 19 register
SEPIN 20
CTRL3 22
4 21 2 3 5 15 13
CTRL1 CTRL2 XtalIN XtalOUT BLANK CVIN CVOUT
IC609: LA7109
75Ω Video Driver
VIN1+ +VCC1
1 36
NFB1 2 6dB DR 35 VOUT1
MUTE1 3 34 GND
VIN2+ 4 33 VOUT2
6dB DR
NFB2 5 DR CTL2
32
-VCC1 6 31 VOUT3
VIN3+ 7 MUTE4
6dB DR 30
IC608: TC74HCU04AFEL
8
Hex Inverters NFB3 29 -VCC4
N.C. 9 28 N.C.
1A 1 14 VCC
10
N.C. 27 N.C.
1Y 2 13 6A
11 11
VIN4+ 26 26 +VCC2
OUT/IN 2A 3 12 6Y
NFB4 12 6dB DR 25 VOUT4
AX or AY
2Y 4 11 5A
MUTE2 13 24 GND
OUT/IN 3A 5 10 5Y
BX or BY
VIN5+ 14 23 VOUT5
3Y 6 9 4A
6dB DR
OUT/IN GND 7 8 4Y NFB5 15 22 DR CTL1
CX or CY
-VCC2 16 21 VOUT6
VIN6+ 17 6dB DR 20 MUTE3
NFB6 18 19 -VCC3