Yamaha DSP-AX1800, Service Manual

Page: 119 / 181

CB501
CB502
IC501 IC501
IC501 IC501
IC501 IC501
IC505
IC504
IC502
IC502
IC502
IC510
IC510
IC502
IC503
IC506
IC511
IC512
CB505
CB503
W5001 CB504
IC508
IC509
IC507
A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
RX-V1800/HTR-6190/DSP-AX1800
119
★
All voltages are measured with a 10M
Ω
/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.
DSP 1/3
SCHEMATIC DIAGRAMS
B-1
POINT B-1 XL502 (Pin 29 of IC506)
5.0
5.0 5.0
5.0
1
2
4
9
11
12 13
10
5
3
6
8
5.0
3.3
3.3
0
0
0
0 0
5.0
5.0
0
0
4.1
0
0
4.1 4.8
4.1 4.1
0 4.1
5.0 0
3.9
3.3
3.3
0
3.3
3.3
0
0
0
4.1 4.8
4.1 4.1
4.1 0
5.0
0
3.9
0
0
4.1
4.1
0
4.8
4.8
0
2.3
2.3
2.3 2.7
3.0
0
0
0
0.1
0
0
3.2
3.3
3.3
0
0 3.3
3.3
0
0
0
0
0
1.6
1.6
0
1.6
1.6
0
3.2
0 0
1.6 3.3
0 3.3
3.3 0.2
0 3.3
0 3.3
3.3 0
0 0
0 0
0
0
0
1.6
0
0
1.6
0
0
1.2
0
1.6
1.6
0
0.5
0
0
3.3 0 3.3
3.3
4.8
3.2 0
0
0.2 0.2
3.3 0 1.6 1.6 0 3.3 1.6 0 1.3
0.2
0.2
0.2
0.2
12.4
0.2
0.2
-11.9
1.6
3.3
0
1.6
3.3
0
1.3
3.3
0
1.6
3.3
0
0
3.3
0
3.3
3.2
4.8 4.8
0
0.6
0.5
0
3.3
3.9
3.9
0
3.3
0
3.3
3.3
0
0
0
0
3.3
1.6
1.6
3.3
0
0.5
0
0
3.2
1.2
0
3.2
3.2
0
1.6
3.3
1.6
0
2.0
0 0 3.3 0
1.2 3.2 3.2
0
0
0
0
0
3.2
3.2
3.2
1.5
3.3
0
1.2
0 3.2
0
0 0
3.3 3.2
0
0
2.7 0.6
2.7
0.5
0
4.8
4.8
4.8
4.1
D-2
POINT D-2 Pin 28 of IC503
ANALOG IN
ANALOG IN
DIGITAL IN
DIGITAL IN
Input
Selector
RXOUT
RX0
RX1
RX2
RX3
RX4
RX5/VI
RX6/UI
LPF
TMCK/PIO0
TBCK/PIO1
TLRCK/PIO2
TDATA/PIO3
TXO/PIOEN
Cbit, Ubit
Microcontroller
I/F
Data
Selector
Clock
Selector
Modulation
&
Parallel Port
PLL
XIN XOUT XMCK CKST
SLRCK
SBCK
RLRCK
RBCK
RMCK
SDIN
RDATA
RERR
DO
XMODE CI CE CL INT AUDIO/VO EMPHA/UO
1/N
Demodulation
&
Lock detect
1
2
3
4
5
8
9
10
13
44
45
46
47
48
29 28 27 34
23
22
20
17
16
24
21
36
37
41 38 39 40 35 33 32
IC506 : LC89057W-VF4AD-E
Digital audio interface transceiver
IC510 : NJM2068MD-TE2
Dual operational amplifier
OUT 1
OUT
2
–IN
1
+IN 1
+IN
2
-IN 2
–V
CC
+V CC 1
2
3
4
8
7
6
5
+ – + –
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
IC502 : SN74AHCT00PWR
Quadruple 2-input NAND gate
Vcc 14 1A 1
S2
S1
S0
E
I0 I1 I2 I3 I4 I5 I6 I7
Z Z
14 1 2
6
7
3 4
5
9
11
12
10
13 15
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
IC504, 505 : SN74LS151NSR
8-input multiplexer
IC509 : SN74LV157APWR
Quadruple 2-line to 1-line data selectors/multiplexers
Pin numbers shown are for the D, DB, DGV, J, NS, PW, and W packages.
2
3
5
6
11
10
14
13
15
1
G
A/B
4B
4A
3B
3A
2B
2A
1B
1A
4
7
9
12
1Y
2Y
3Y
4Y
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A/B
1A
1B
1Y
2A
2B
2Y
GND
VCC
G
4A
4B
4Y
3A
3B
3Y
IC501 : SN74LVU04APWR
Hex inverters
GND
Y3
A3
A2
A1 VCC
A6
A5
A4
Y6
Y5
Y4
Y2
Y1
1
2
3
4
5
6
7
14
13
12
11
10
9
8
IC507, 508 : TC74VHC153FT
Dual 4-channel multiplexer
14 A
S0
S0
6 1C0
2 B
S1
S1
S2
S2
S3
S3
S0
7 1Y
5 1C1
S1
4 1C2
S2
1
1G
3 1C3
S3
10
2C0
S0
9 2Y
11 2C1
S1
12 2C2
S2
15 2G
13 2C3
S3
1
3
2
5
4 GND
V
CC
IC512 : TC7SH08FU
2-input AND gate
IN A
IN B
OUT Y
IC511 : TC74VHC125FT
high speed CMOS quad bus buffer
1 1G
2 1A
3 1Y
4 2G
5 2A
6 2Y
7
14
13
12
11
10
9
8 GND
Vcc
4G
4A
4Y
3G
3A
3Y
inputs outputs
G Y
H Z
L L
L
A
X
L
H H
to DSP 2/3
DIR
INPUT
SELECT
REC OUT
SELECT
DUTY CORRECTOR
XMDT
XM
(U, C models)
DOCK
to FUNCTION (1)_CB411
Page 122 J9
to OPERATION (3)_CB805
Page 126 E2
to FL (2)_CB954
Page 137 B8
to FL (2)_CB974
Page 137 D8