Yamaha RX-V363 Service Manual page 76

A B C
RX-V363/HTR-6130
DSP 4/6
1
to DSP 2/6
2
3
to DSP 5/6
4
5
to DSP 5/6
6
7
Page 79 F10
to OPERATION (1)_CB202
CB408
8
to DSP 1/6
9
to DSP 5/6
10
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# 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.
76
D E F
0
3.3
1.7
3.3
3.4 3.4
3.3
3.3
3.4
3.3
3.4
0
0.8
0
0.2
0
1.7
3.3 0
1.7 0
0
3.3
0
3.4
3.4
0.8 5.1
1.7
0.2
3.4
1.1
*
3.4 2.9
0.6
0
5.0
0
0.6 3.4
3.4 3.4
0.6
0.2 0
5.0 0.2
5.0 3.3
0.2
3.3
5.0 0.5
0
BUS SWITCH
G H I
* Destination for A/D port
DEST (1 pin) [V]
A/D value (3.3 V=255)
A/D SELECTOR
0
0
0
0.9
0
1.8
1.2
3.3
to DSP 6/6
A/D SELECTOR
4ch ADC
IC401
3.4 3.3
3.4
0.6
0 3.3
1.8 3.4
1.7 3.3
to DSP 2/6
to DSP 2/6
to DSP 1/6, 2/6
J K L
R406 [ohm] 1.5 k 3.3 k 4.7 k 6.8 k 8.2 k
R407 [ohm] 8.2 k 6.8 k 5.6 k 3.9 k 2.2 k
2.6-3.0 2.0-2.4 1.6-2.0 1.0-1.4 0.5-0.9
206-226 162-182 129-149 83-103 44-64
Destination U, C R, L T K, A B, G, E, F
to DSP 5/6
IC402, 403: SN74LV4051APWR
8-channel analog multiplxers/demultiplexers
11
A
10
B
9
C
6
INH
IC404: SN74AHCT245PWR
Octal bus transceivers with 3-state outputs
1
DIR
2
A1
to DSP 5/6
To Seven Other Channels
IC401: ADC084S021 CIMM
4-channel, 200 ksps, 8-bit A/D converter
IN1
IN2
MUX
IN3
IN4
M N
to DSP 5/6
B, G, E, F models
to DSP 5/6
3
COM
13
Y0
14
Y1
INPUTS ON
Y4 1 16 V
15 CC
INH C B A CHANNEL
Y2 Y6 2 15
Y2
L L L L Y0
COM 3 14 Y1
12 L L L H Y1
Y7 4 13
Y3 Y0
L L H L Y2
Y5 5 12 Y3
L L H H Y3
1 INH 6 11
Y4 A
L H L L Y4
10
GND 7 B
L H L H Y5
5 GND 8 9 C
Y5 L H H L Y6
L H H H Y7
2
Y6
H X X X None
4
Y7
DIR 1 20 V
CC
A1 2 19 OE
19
OE
A2 3 18 B1
A3 4 17 B2
A4 5 16 B3
A5 6 15 B4
18
B1
A6 7 14 B5
A7 8 13 B6
A8 9 12 B7
GND 10 11 B8
8-Bit V A
CS 1 10 SCLK
SUCCESSIVE
T/H
APPROXIMATION V A 2 9 DOUT
GND
ADC
ADC084S021
GND 3 8 DIN
GND
IN4 4 7 IN1
IN3 5 6 IN2
SCLK
CS
CONTROL
LOGIC DIN
DOUT