Yamaha DSP-AX1/RX-V1 Service Manual page 80

A B
DSP-AX1/RX-V1
SCHEMATIC DIAGRAM (VIDEO)
1
P-E97/J89
F-1
2
0
0
0
0
0
0
0
0
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
0
0
0
0
0
0
0
0
0
0
4.9
4.9
5
1.4
0.7
6
IC4~7 : TC74HC4051AP
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
X0 13 SW
X1
14 SW
7
X2 15 SW
X3 X
12 SW 3
X4 1 SW
X5 5 SW
X6 2 SW
X7
4 SW
INPUT STATES
"ON" CHANNEL (S)
INHIBIT C B A
0 0 0 0 0
0 0 0 1 1
0
0 0 1 2
0 0 1 1 3
0 1 0 0 4
8
0 1 0 1 5
0 1 1 0 6
0 1 1 1 7
1 X X X NONE
E-95/J-87
C D E
P-E99/J91
G-1
P-E96/J88 P-E93/J85
F-1 D-3
4.9
4.9 0
4.9
-4.9
4.1
-4.9
0
0 -0.1
-0.1 0
4.9
0
0
0 4.9 0
0 -4.9
-4.9
0 0 0
1.4
0
0
-0.1 -0.1 1.4 4.9
0
0 4.9
0 0
0 0
-4.9
0 0 0
0
0
-4.9
0
0
-0.1
-0.1
4.9
0
0
4.8
-0.1
-0.1
0 4.9
0
0 -4.9
-4.9
-0.1
0
0
-0.1
0
-0.1
-0.1
4.9
0
0
-0.1
-0.1
0
4.9
0
0 4.8
-4.9
-0.1
0
0
-0.1
0
-4.9
4.9
1.4
0
4.9 4.9
0
0 2.0
4.9
1.4
2.0
0
1.4
1.4 1.4
0
4.7
2.1
0
IC8, 9 : TC74HC4053AP
Triple 2-Channel Multiplexer/Demultiplexer
VDD
16
14 X-COMMON
A OUT C IN 12 OX
11
OUT C IN IX
13
B 10 OY
OUT C IN 2
OUT C IN 1 IY
C 9
OUT C IN 5 OZ
OUT C IN 3 IZ
INH 6 Z-COMMON
4
15 Y-COMMON
8 7
VSS VEE
CONTROL INPUTS "ON" CHANNEL
INHIBIT C B A 0X (Pin 12), 0Y (Pin 2), 0Z (Pin 5)
(Pin 6) (Pin 9) (Pin 10) (Pin 11) 1X (Pin 13), 1Y (Pin 1), 1Z (Pin 3)
L L L L 0X, 0Y, 0Z
L L L H 1X, 0Y, 0Z
L L H L 0X, 1Y, 0Z
L L H H 1X, 1Y, 0Z
L H L L 0X, 0Y, 1Z
L H L H 1X, 0Y, 1Z
L H H L 0X, 1Y, 1Z
L H H H 1X, 1Y, 1Z
H * * * NOTE
* Don't Care
F G
P-E96/J88 P-E92/J84
D-6 K-8
0
0
0
4.9
0
0
2.6 2.6 2.6
2.6
4.4
2.6
4.9 4.2 4.2
4.4
0
4.4
4.4 4.9 0 0
0
4.9
0 0 4.4
0
0 0
4.3
4.9
4.9
0
0.4 0
4.9
4.2
-0.1
4.8
1.5
-0.6 1.2
4.2
4.8
1.5
-0.7
-4.9 -0.6
-0.5
0.7
-1.3 0 0
4.9
4.9
0
0
4.8
0
4.8
4.8 4.3
-4.9 -0.6
0
0 4.8
SUPER IMPOSE
i
IC13, 14 : TC74HCUO4AP IC1, 10, 11 : LA7108M
Ω
Hex Inverters 75 Video Driver
VIN1+ 1 16 +VCC
1A 1 14 V DD
VSS
NFB1 2 6dB DR 15 VOUT1
1Y 2 13 6A
2A 3 12 6Y DATA
MUTE1 GND
3 14
2Y 4 11 5A
CLOCK
VIN2+ VOUT2
4 13
3A 5 10 5Y
LCK
NFB2 5 6dB DR 12 MUTE2
3Y 6 9 4A
Q0
V SS 7 8 4Y –VCC1 6 11 VOUT3
Q1
VIN3+ 7 10 MUTE3
Q2
NFB3 8 6dB DR 9 –VCC2
Q3
Q4
H I
CIRCUIT CHANGES BY MARKET. X : NOT USED
P-E92/J84
K-6
P-E92/J84
K-6
Point i (Pin 16 of IC12)
IC15 : BU2092
Serial In/Parallel Out Driver V : 2V/div, H : 50 nsec/div
DC, 1 : 1 probe
1 18 VDD
0V
2 17 OE
CONTROL
3 16 Q11
CIRCUIT
Q10
4 15
5 14 Q9
6 13 Q8
Q7
7 12
8 11 Q6
9 10 Q5
J K L
* All voltage are measured with a 10MΩ/V DC electric volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.