Yamaha RX-V3200, Service Manual

Page: 66 / 92

A
1
2
3
4
5
6
7
8
9
B C D E F G H I J K L
SCHEMATIC DIAGRAM (VIDEO)
E-81/J-75
RX-V3200/DSP-AX3200
★ 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
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
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
IC606, 607: MM74HC4053N
IC704, 751: 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
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-78/J-72
C3
E-78/J-72
D8
E-78/J-72
E-78/J-72
E-78/J-72
G8
I5
E-83/J-77
F3
E-79/J-73 to OPERATION (4)
I3
IC602~605: MM74HC4051N
IC702, 703: 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
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
Point 4 Pin 3 of IC610
Production of the parts marked with "x" has been discontinued starting with
November production of 2001.
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4.9
4.9
0
2.6
0.1
0
0
-4.9
-4.9
0
0
4.9
4.7
-4.9
0
-0.1
1.0
3.0
-0.1
4.8
0
-4.9
0.3
4.8
1.0
-0.1
0.1
0
-0.1
0
4.9
0
0
0
0
0
-4.9
0
0
0
0
0
0
4.7
0
0
4.9
0
0
0
0
0
-4.9
0
0
0
0
0
0
0
4.7
4.7
4.8
0
-4.9
0
0
0 0 0
0 0 0 0
0
0
0
0
-0.1
0
4.8
0
-4.6
5.0 11.9
0
5.6
0
0
0
0
0
0
0
0
0 0
0
-4.8
0
4.6
4.8
0
0
0
0
0
0
0
0
0
0 0
0
-4.8
0 4.6
4.8
0
0
0
0
0
0
0
0
0
0
0
0
-4.8
0
0
4.8
4.6
4.6
0
-4.8
0
0
4.8
4.6
4.6
0
0
0
0
0
0
0
0
0
0
-4.8
0
4.8
3.9
0
0
1.0
0.7
4.8
0
0
0
1.0
1.0 1.0
1.6
4.8
0.3
0
-0.7
1.0
1.0
4.8
0
-4.8
3.0
-0.1
4.8
-0.1
-4.8
3.0
-0.1
4.8
-0.1
0
4.8
0
3.0
0
0
-4.8
0
0
-4.8
-4.8
-0.1
0
3.0
0
0
-4.8
-0.1
0
0
0
4.8
-4.8
-4.8
4.8
-0.1
-0.1
0
-0.1
-4.8
1.0
0
0
4.4
4.7
4.4
4.8
1.0 1.0
0
-4.8
0
1.5
4.3 1.0
1.5
0.7
0.7
0
0
0
0
0
0
0
0
0
0
4.7 2.3 2.3
4.8 4.8 0 4.8
4.8
0.1 4.7 0 0
0 4.7
4.6
0
2.0
0
4.9 2.0 4.3
0
4.7
0 0
1.6
0
0.9 4.7 1.9
0
4.7
0
4.7
4.7
4.7
2.3 2.2 0
0
-0.6
0
0.9
-0.5
0.2
4.1
-0.1
0
0
0
0
4.4
4.8
0 0
0
-4.8
0
3.9
4.8
2.5
4.8
0
0
2.5
4.8
4.8
4.7
4.4
3.9
4.1
-1.6
-0.9
-0.6
-0.5
to PO
WER (4)
+5.6V
2.2K
2.2/50
+5.6V