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Yamaha HTR-5750 サービスマニュアル
A
B
C

SCHEMATIC DIAGRAM (VIDEO)

DSP-AX450
1
2
3
4
5
4.4
4.4
0
0
4.4
4.4
6
0
0
4.4
4.4
0
0
7
8
9
10
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be replaced
s
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
D
E
F
Page 79
I4
to FUNCTION (2)
0.1
0.7
0
0
-4.8
0
0
0
0
4.9
-4.8
0
0
0
4.9
0
-4.8
0
4.9
0
0
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
0.1
4.9
0
4.9
0
0
0
0
0
0
0
0
0
G
H
I
IC851, 852: TC74HC4053AF
Analog Multiplexer/Demultiplexer
INHIBIT
VDD
6
16
A
11
LEVEL
BINARY TO 1-OF-8
B
10
CONVERTER
DECODER WITH INHIBIT
C
9
VSS
8
VEE
7
0X
SW
12
1X
13
SW
0Y
2
SW
1Y
1
SW
0Z
5
1Z
3
IC853: NJM2581M
Video Amp
75Ω
6dB
VIN1
1
14
V+1
AMP
Driver
BIAS
NEE1
2
VOUT1
13
6dB
75Ω
VIN2
3
12
V+2
AMP
Driver
BIAS
VEE2
4
11
VOUT2
6dB
75Ω
VIN3
5
10
V+3
Driver
AMP
BIAS
6
VEE3
9
VOUT3
PowerSave
7
REF
8
GND
J
K
L
INPUT STATES
"ON" CHANNNEL (S)
INHIBIT
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
X-COM
0
1
0
0
0X, 0Y, 1Z
14
0
1
0
1
1X, 0Y, 1Z
0
1
1
0
0X, 1Y, 1Z
15
Y-COM
0
1
1
1
1X, 1Y, 1Z
1
X
X
X
NONE
SW
4
Z-COM
SW
M
N
RX-V550/HTR-5750/RX-V450/HTR-5740/DSP-AX450
85