Schematic Diagrams - Yamaha RX-V1800 Service Manual

A B C

SCHEMATIC DIAGRAMS

DSP 1/3
1
2
DOCK
DUTY CORRECTOR
3
5.0
3.3
5.0
1
3
2 0
5.0
5.0
IC502
0
IC502 9 0
5.0 IC502 8
6 10 0
4 0 0
5.0 5.0
5 3.3
0
4
INPUT
4.1
SELECT
0
4.8 4.1 4.8
4.1 4.1
4.1 0
5.0 0
3.9
4.1
3.3
0 0 3.3
4.8
0 0
5
4.1 4.8
4.1
4.1
4.1
0 4.1 0
4.8 5.0 0
3.9
3.3
0 3.3
0 0
4.1
0
4.8
REC OUT
SELECT
6
4.8
IC501 IC501
2.3 2.7
0.5
0
DIGITAL IN
IC501 IC501
2.3 2.7 0.6
IC501 IC501
7 2.3 2.7 0.5
8
XM
9
10
D E F
Page 122 J9
to FUNCTION (1)_CB411
12.4
0.2
0.2 IC510
0.2
0.2 0.2
IC510
0.2
-11.9
IC502
13 11 3.3
3.2 12 3.3
0
3.3
0.5 3.3
0 0
0.6 0
0.5 0
0 0
B-1
3.3 3.3
3.9 1.6
3.9
0 1.6
DIR
3.3 3.3
0
0
0.1
0 0
3.0 0
ANALOG IN
0
0
0
1.5
3.2
3.3
0
XMDT
1.2
0 3.2
0 0
0
0
3.2
IC503
3.3
3.2
D-2
3.2
0
0
(U, C models)
IC504, 505: SN74LS151NSR
8-input multiplexer
IC501: SN74LVU04APWR IC502: SN74AHCT00PWR
Quadruple 2-input NAND gate
Hex inverters
9
S 2
10
A1 1 14 VCC 1A 1 14 Vcc
S 1
11
1B 2 13 4B S 0
Y1 2 13 A6
7
E
1Y 3 12 4A
A2 3 12 Y6
2A 4 11 4Y
Y2 4 11 A5
2B 5 10 3B
A3 5 10 Y5 V CC = PIN 16
GND = PIN 8
2Y 6 9 3A
Y3 6 9 A4 = PIN NUMBERS
GND 7 8 3Y
GND 7 8 Y4
G H I
Page 126 E2 Page 137 B8 Page 137
to OPERATION (3)_CB805 to FL (2)_CB954 to FL (2)_CB974
3.3
0
0 0 0 0
IC511
3.3 3.3 3.3 3.3
1.6 1.6 1.3 1.6
0 3.3
0 0
1.6 0
1.6 0
0 0
1.6
0 0
1.6 1.6 0
0 1.6 1.6
0
0.2
0
0
0
0
3.3
0 0
0 0
0 0
0
0
1.6 0
0
1.6
0
1.2
DIGITAL IN
POINT B-1 XL502 (Pin 29 of IC506) POINT D-2 Pin 28 of IC503
I 0 I 1 I 2 I 3 I 4 I 5 I 6 I 7
IC511: TC74VHC125FT
4 3 2 1 15 14 13 12
IC510: NJM2068MD-TE2 high speed CMOS quad bus buffer
Dual operational amplifier
1G
1A
OUT 1 8 +V
1 CC
1Y
–IN 1 2 7 OUT 2 2G
+ – + –
2A
+IN 3 6 -IN
1 2
2Y
–V 4 5 +IN
6 5 CC 2
GND
Z Z
J K L
D8
3.3
4.8 4.8
0
3.2
3.2
0
3.3
3.3
3.3
3.3
3.3
3.3
to DSP 2/3
ANALOG IN
IC512: TC7SH08FU
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
2-input AND gate
# Components having special characteristics are marked s and must be replaced
1 14 Vcc
# Schematic diagram is subject to change without notice.
2 13 4G
IN B 1 5 V
CC
3 12 4A
inputs outputs
4 11 4Y
G A Y IN A 2
5 10 3G
H X Z
6 9 3A GND 3 4 OUT Y
L L L
7 8 3Y
L H H
M N
RX-V1800/HTR-6190/DSP-AX1800
IC509: SN74LV157APWR
Quadruple 2-line to 1-line data selectors/multiplexers
1A
2
4 1Y
1B 3
2A 5
7 2Y
2B
6
3A 11
9 3Y
3B 10
4A 14
4Y
12
4B
13
G
15
A/B
1
Pin numbers shown are for the D, DB, DGV, J, NS, PW, and W packages.
A/B 1 16 V CC
1A G
2 15
1B 3 14 4A
1Y 4 13 4B
2A 4Y
5 12
2B 6 11 3A
2Y 7 10 3B
GND 8 9 3Y
IC507, 508: TC74VHC153FT
Dual 4-channel multiplexer
14
A
S0
S0
S1
S1
2
B
S2
S2
S3
S3
6
1C0
7 1Y
S0
5
1C1
S1
4
1C2
S2
3
1C3
S3
1
1G
2C0 10
9 2Y
S0
2C1 11
S1
2C2 12
S2
13
2C3
S3
15
2G
IC506: LC89057W-VF4AD-E
Digital audio interface transceiver
EMPHA/UO AUDIO/VO INT CL CE CI XMODE
32 33 35 40 39 38 41
RXOUT 1 Microcontroller
Cbit, Ubit 37 DO
I/F
RX0 2
36 RERR
RX1 3
RX2 4
Demodulation
Input Data
RX3 5
Selector & 21 RDATA
Selector
Lock detect
RX4 8
RX5/VI 9
24 SDIN
RX6/UI 10
16 RMCK
LPF 13 PLL
17 RBCK
Clock 20 RLRCK
TMCK/PIO0 44
Selector
Modulation 22 SBCK
TBCK/PIO1 45
1/N
& 23 SLRCK
TLRCK/PIO2 46
Parallel Port
TDATA/PIO3 47
TXO/PIOEN
48
29 28 27 34
XIN XOUT XMCK CKST
with parts having specifications equal to those originally installed.
119