Yamaha RX-V540 Service Manual page 84

A B
RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
SCHEMATIC DIAGRAM (VIDEO)
1
2
3
4
5
6
7
8
# 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.
9
84
C D E
DSP-AX540: Page 80 B3
DSP-AX440: Page 82 B3
to FUNCTION (4)
0.1
0.7
0
0
-4.8
0
0 0 0 4.9
0 -4.8 0
0 4.9
-4.8 0
0 4.9
0 0
VIDEO AMP
0
0 0
0
4.9
0.1
4.9
0 4.9
0 4.9
4.9
4.9
4.4 0.1
4.9
4.4 4.4
0.1 4.9
0
4.9
0 0 0 0
0
4.4 4.4
0 0 0 0
0
4.4 4.4
0 0 0 0
0
F G H
IC851, 852: TC74HC4053AF
Analog Multiplexer/Demultiplexer
A
B
C
VSS
VEE
0X
1X
0Y
1Y
0Z
1Z
IC853: NJM2581M
Video Amp
VIN1
NEE1
VIN2
VEE2
VIN3
VEE3
PowerSave
I J
INHIBIT VDD
6 16
INPUT STATES
11
LEVEL BINARY TO 1-OF-8
INHIBIT
10
CONVERTER DECODER WITH INHIBIT
9
8
7
12 SW
14 X-COM
13 SW
2 SW
15 Y-COM
1 SW
SW
5
4 Z-COM
3 SW
6dB 75Ω
1 14 V+1
AMP Driver
BIAS
2 13 VOUT1
75Ω
6dB
3 12 V+2
Driver
AMP
BIAS
4 11 VOUT2
6dB 75Ω
5 10 V+3
AMP Driver
BIAS
6 VOUT3
9
7 REF GND
8
K L
"ON" CHANNNEL (S)
C B A
0 0 0 0 0X, 0Y, 0Z
0 0 0 1 1X, 0Y, 0Z
0 0 1 0 0X, 1Y, 0Z
0 0 1 1 1X, 1Y, 0Z
0 1 0 0 0X, 0Y, 1Z
0 1 0 1 1X, 0Y, 1Z
0 1 1 0 0X, 1Y, 1Z
0 1 1 1 1X, 1Y, 1Z
1 X X X NONE