Yamaha AX-V1065, Service Manual

Page: 128 / 166

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-V1065/HTR-6280/AX-V1065
128
VIDEO 1/3
★
All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★
Components having special characteristics are marked ⚠ and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
● ⚠印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがございます。
IC308
IC307
IC306
IC303
IC303
IC303
IC303
IC302
IC301
IC301
IC301
CB301
IC305
IC305
IC301
IC302
IC302
IC302
CB305 CB304
CB303
IC304
IC310
IC309
CB302
W3001
IC310
IC310
IC305
IC305 IC305 IC305 IC305
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5.0
4.8
0
0
0
0
-4.8
5.0
5.0
5.0
5.0
0
0
0
0
0
0
5.0
5.0
5.0
0
-4.8
0
0
0
0
-4.8
0
0
-4.8
0
0
0
0
0
0 0
0
0
0 0
0
0
5.0
0
0 0
0
0 0
0
0
0
0
0
0
0
0
5.0
0
0
0
4.9
0 0
-4.7
0 0
4.9 4.9 -4.7 -4.7 -4.7
4.9
0
0
0
4.9
0
0
0
4.9
-4.8
0
0 0
0
5.0 5.0 5.0 5.0
0 0
0
0 0
0
0 0
0
5.0
5.0
3.4
3.4
0
0
0
0
0
0
0.6
0
0
0
0
0
0
0
0
4.9
0
0
0
0
0
-4.8
-0.3
-0.9
0
5.0
4.8
0
0
5.0
5.0
5.0
0
0
0
0
0
0
0
0
-4.8
0
0
0
0
0
0
0
5.0
0
0
5.0
0
0
0
0
-4.8
-4.8
0
-4.8
0
0
0
5.0
5.0
5.0
0
0
5.0
5.0
5.0
0
3.4
3.4
5.0
0.6
5.0
IC310 : FHP3350IM14X
Triple voltage feedback amplifier
1
2
3
4
5
6
7 8
14
13
12
11
10
9
NC or DISABLE1
NC or DISABLE2
NC or DISABLE3
+Vs
+IN1
-IN1
OUT1 OUT3
OUT2
-IN3
+IN3
+IN2
-IN2
-Vs
IC305 : LA73050-TLM-E
6-channel 75 ohms video driver
IC308 : LC709004A-TLM-E
I/O-expander for microcontroller
C
ontr
ol logic
port 0 I/O buffer
Serial/parallel converter/shift register
I/O control/output register
DIN
VDD
DOUT
VSS
CLK#
CS#
RES#
P00 P07
2
14
15
19
3
4
21
24 17
port 1 I/O buffer
P1
0
P1
7
15 8
IC306 : NJM2581M
Video amplifier
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
Driver 6dB
AMP
BIAS
75
Driver 6dB
AMP
BIAS
75
Driver 6dB
AMP
BIAS
REF
4 1
6 2
COM 3
7 4
5 5
INH 6
V
EE
7
GND 8
Vcc 16
2 15
1 14
0 13
3 12
A 11
B 10
C 9
IC307 : TC74HC4051AFEL
8-channel analog multiplexer/demulitiplexer
Logic
Level
Converter
OUT C IN
OUT C IN
A
B
C
INH
COM
0
1
2
3
4
5
6
7
IC301-303 : TC74HC4053AF
Analog multiplexer/demultiplexer
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNEL (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
BINARY TO 1-OF-8
DECODER WITH INHIBIT
LEVEL
CONVERTER
VCC INHIBIT
A
B
C
GND
VEE
0X
1X
0Y
1Y
0Z
X-COM
Z-COM
Y-COM
SW
SW
SW
SW
SW
SW
11
6 16
10
9
8
7
12
13
2
5
3
1
14
15
4
VIDEO IN
COMPONENT
VIDEO IN
VIDEO (1)
AV 2
AV 1
AV 3
AV 4
AV 5
AV 6
AV OUT
MONITOR
OUT
COMPONENT
VIDEO
VIDEO
OUTPUT
SELECTOR
OUTPUT AMP VIDEO
INPUT SELECTOR
EXTERNAL I/O PORT
COMPONENT
INPUT SELECTOR
to DIGITAL_CB71
Page 123 H2
to OPERATION (2)_CB459
Page 125 G7
to VIDEO (1)_CB354
(J model)
Page 130 H6