Yamaha RX-V2065 Service Manual page 134

A B C
RX-V2065/HTR-6295
VIDEO 1/3
1
2
AV 1
COMPONENT
0
VIDEO IN
4.9
0
-4.8
3
0
CB301
AV 2
4 AV 3
AV 4
VIDEO IN
AV 5
AV 6
5
AV OUT
6
7
8
COMPONENT
VIDEO
MONITOR
OUT
9
0
VIDEO
5.0
10
134
D E F
0
0
4.9
0
0
0
IC301
0 0 0 0
0 0 -4.8 0
0
0 0 0
0
0 0 0
0
IC301
0
0 4.9
0
0
0
0
0
0
-4.8 0
0 0
4.9
0
0
-4.8 0
0
0
COMPONENT
INPUT SELECTOR
0
0 0
0
0 0
0
0 0
5.0
0
IC305
0
0
5.0
0
0 0
5.0 0
0
3.3
5.0 0
3.3 0
0 5.0
5.0 5.0
0 5.0
0
5.0
5.0 0
0 5.0
EXTERNAL I/O PORT
0 0
0
-4.8
0
5.0
0 0
0 0
0 0
0 0
0
4.9
OUTPUT AMP
VIDEO
INPUT SELECTOR
0
0
0 -4.8
4.9 0
0 -4.8
4.9 0
0 -4.8
4.9 0
0
IC305
0
G H
Page 124 L8
CB302
to DIGITAL (1)_CB29
IC309
4.8
4.8
0
IC310
0 0
IC304
4.8
0
IC310
0 0
0
5.0 5.0
4.8
0
IC310
0 0
0 0
-4.8
IC305
-0.2
-0.9
-4.8
OUTPUT
SELECTOR
IC302 0
0 0
0
0 IC302 0
0
0 0
IC302
IC301
0
0
0
I J K
0 0 0
5.0 5.0
0 0 0 0 0 0
0
5.0
3.3
3.3
Page 131 G7
to OPERATION (2)_CB459
5.0
0
0
0
0
CB303
0
Page 127 H2
0
0 to DIGITAL (1)_CB71
0
0
0
0
0.4
0
0
0
0
4.9
0
CB304 CB305
VIDEO (1)
L M N
IC301-303: TC74HC4053AF
Analog multiplexer/demultiplexer
INHIBIT VCC
6 16
A 11 INPUT STATES
LEVEL BINARY TO 1-OF-8 "ON" CHANNEL (S)
INHIBIT C B A
B 10
CONVERTER DECODER WITH INHIBIT
0 0 0 0 0X, 0Y, 0Z
C 9
0 0 0 1 1X, 0Y, 0Z
GND 8
0 0 1 0 0X, 1Y, 0Z
VEE 7
0 0 1 1 1X, 1Y, 0Z
0X 12 SW
X-COM 0 1 0 0 0X, 0Y, 1Z
14
1X 13 SW 0 1 0 1 1X, 0Y, 1Z
0Y 2 SW 0 1 1 0 0X, 1Y, 1Z
Y-COM
15
0 1 1 1 1X, 1Y, 1Z
1Y 1 SW
1 X X X NONE
0Z 5 SW
4 Z-COM
3 SW
IC306: NJM2581M
IC305: LA73050-TLM-E
Video amplifier
6-channel 75 ohms video driver
75
6dB
VIN1 1 AMP Driver 14 V+1
BIAS
NEE1 2 13 VOUT1
6dB 75
VIN2 3 12 V+2
AMP Driver
BIAS
VEE2 4 11 VOUT2
75
VIN3 5 6dB 10 V+3
AMP Driver
BIAS
VEE3 6 9 VOUT3
7 REF
PowerSave 8 GND
IC307: TC74HC4051AFEL
IC308: LC709004A-TLM-E
8-channel analog multiplexer/demulitiplexer I/O-expander for microcontroller
COM
OUT C IN 0
DIN 2 Serial/parallel converter/shift register 14 DOUT
1
A
CLK# 3 15 VDD
2
19 VSS
3 CS# 4
B
4
5 RES# 21 I/O control/output register
C
6
C IN 7
INH OUT
port 0 I/O buffer port 1 I/O buffer
4 1 16 Vcc
6 2 15 2
24 17 15 8
COM 3 14 1
7 4 13 0
5 5 12 3
INH 6 11 A
V EE 7 10 B
GND 8 9 C
IC310: FHP3350IM14X
Triple voltage feedback amplifier
NC or DISABLE1 1 14 OUT2
NC or DISABLE2 2 13 -IN2
NC or DISABLE3 3 12 +IN2
+Vs 4 11 -Vs
+IN1 5 10 +IN3
-IN1 6 9 -IN3
OUT3
OUT1 7 8
★ 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.