Yamaha TSX-10 Service Manual page 34

A B
TSX-10/15/20
SCHEMATIC DIAGRAM (DIGITAL)
1
Q Q
3 7 6 3 1 5 1 5 0
DIGIAL 2
2
~
~
~
~
~
3
~
~
~
-27.5
2.8
3.3
~
4.8
0
4.8
4.8
0
~
5.0
4.9
4
T E
L 1 3 9 4 2 2 9 6 5 1 3
5
4.9
4.6
4.6
6
4.9
DIGIAL 3
7
w w w
8
H All v oltage are measured with a 10MΩ /V DC electric volt meter.
H Components ha ving special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
H Schematic diag ram is subject to change without notice.
9
41
C D E
FL DISPLAY
~
~
~
~
~
~
~
~
~
~
~
~
5.0
16 BIT µ-COM
0
0
0
4.8
B C
0
4.7
0
0
4.9
To DIGITAL (1)
CB407
x a o
. i
F G
http://www.xiaoyu163.com
-22.4 -27.5
RESET
4.8
2 D
0
~ 1.5
EEPROM
~ 1.1
~ 1.9
Q Q
3 7
2.8 2.8
TEMPERATURE DETECT
0 0
0
3.3 0 2.7
1.0
0
5.0
5.0
5.0
OPERATION KEY
2.7
IC202: BU2092F
Serial In/Parallel Out Driver
u 1 6 3
y
Vss 1 18 VDD
DATA 2 17 OE
CLOCK 3 16 Q11
CONTROL
CIRCUIT
LCK Q10
4 15
Q0 5 14 Q9
Q1 6 13 Q8
Q2 7 12 Q7
Q3 8 11 Q6
Q4 9 10 Q5
H I
2 4
8 9
POWER SUPPLY
To MAIN (1)
W3
5.6
5.0 5.6 12.8
6.2
6.2
1
0
D
0 0
12.8 12.8
12.1
POWER
DOWN
6.9
DETECT
7.5
4.8
6.9
4.8
0 0
3.9
0.7
1.5 2.8
1.1 2.1
1.9 2.5
6 3 1 5 1 5 0 8
To MAIN (1)
CB1
0
0.1
5.0
0
5.0
5.0
0
5.0
0
1 Q205 E
2 Q203 C
To MAIN (1)
W8
IC702: TC74HC4051AF
Analog Multiplexer/Demultiplexer
INHIBIT VCC
m
6 16
IC205 : S-29390AFJA
CMOS 4kbit Serial EEPROM
A
11
LEVEL
c o
B 10
CONVERTER
C 9
Memory array Address decoder
GND 8
.
VEE 7
0 13
Data register Output buffer 6 DO
1 14
DI 5 2 15
3
12
8
TEST
Mode decode logic 4 1
3
CS
1 NC
5 5
2 Vcc
6 2
4
SK Clock generator 7 GND 7
4
J K
2SD1938F 2SC4488 MA8051-M
2
9 8 9 9
DTC144EKA RB501V-40
2SA1037K 1SS355
Anode
2SC2412K C MA8068-M
2SB1132 MA8062-M
E
DTA114EKA
B
DTC143XKA
B
DTC114EKA
C
E
Cathode
M30218FCFP BU2092
80 51
81 50
9
18
1
100
31
1 30
TC74HC4051AF S-29390AFJA
AN4801SB-E1
NJM2068MD
14
NJM2903M
20
28
21
8 13
26
16
8 4
7
27
6
1 1
1
TC74HC126AF AN8399SA-E1 TA8409SE
16
7 9
14
32
1
1
1
MN35511AL LC75342M
60 41
61 40
15
30
80 21
1
1 20
Point B Pin 11 of IC201
9 2 4 9 8 2 9 9
Point C Pin 15 of IC201
Point D Pin 15 of IC201
POWER ON POWER OFF
(Connect the power cord) (Disconnect the power cord)
BINARY TO 1-OF-8
DECODER WITH INHIBIT
INPUT STATES
"ON" CHANNNEL
INHIBIT C B A
0 0 0 0 0
0 0 0 1 1
SW 3 COM
0 0 1 0 2
SW
0 0 1 1 3
SW 0 1 0 0 4
SW 0 1 0 1 5
0 1 1 0 6
SW
0 1 1 1 7
SW
1 X X X NONE
SW
SW
L