Mcr Control Pcb - Casio SA-5000 Service Manual

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5-13. MCR control PCB

Track1
U1
D0
27 D0
TXRDY
D1
28
D1
D2
1
D2
TXC
D3
2
D3
D4
5
D4
TXD
D5
6
D5
RXD
D6
7
D6
D7
8
D7
RXRDY
RXC
SY/BR
21
RESET
20
CLK
DSR
12
C/D
DTR
13
RD
10
WR
CTS
11
CS
RTS
B251
Track3
U2
D0
27 D0
TXRDY
D1
28
D1
D2
1
D2
TXC
D3
2
D3
D4
5
D4
TXD
D5
6
D5
RXD
D6
7
D6
D7
8
D7
RXRDY
RXC
SY/BR
21
RESET
20
CLK
DSR
12
C/D
DTR
13
RD
10
WR
CTS
11
CS
RTS
B251
Track2
U3
D0
27 D0
TXRDY
D1
28
D1
D2
1
D2
TXC
D3
2
D3
D4
5
D4
TXD
D5
6
D5
RXD
D6
7
D6
D7
8
D7
RXRDY
RXC
21
SY/BR
RESET
20
CLK
DSR
12
C/D
DTR
13
RD
10
WR
CTS
11
CS
RTS
B251
Standard MCR is 2 track system.
To use the 3 track MCR system, replace the MCR unit and mount the IC ( location U2).
5-14. Battery causion
The following ICs have a battery inside.
To carry the motherboard, do not put its solder side on the metal plate.
IC : DS1230Y-200(DALLAS)
IC : DS12887 (DALLAS)
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used IC package according to the manufacturer's instruction.
Remplacez les batteries par un modèle equival lent ou de préférence par celles recommandees
par le constructeur.
Disposez le package IC selon les instructions du constructeur.
Nur mit gleichen, oder vom Herstellen freigegebenen, type ersetzen.
Gebrauchte Gehasuse nur entsprechend den Anwweisungen des Herstellen entsorgen.
VCC
C1
0.1 µF
15
18
TXE
9
19
3
14
25
16
22
24
R1
17
23
100K
VCC
15
C2
18
0.1 µF
TXE
9
19
3
14
25
16
22
24
R2
17
23
100K
VCC
C3
15
18
0.1 µF
TXE
9
19
3
14
25
16
22
24
R3
17
23
100K
— 33 —
VCC
100K
U5B
U5F
4
3
12
13
74HC14
74HC14
U5A
2
1
74HC14
VCC
VCC
C4
0.1 µF
100K
100K
U6B
U6C
4
3
6
5
74HC14
74HC14
U6A
2
1
74HC14
VCC
100K
100K
U5D
U5E
8
9
10
11
74HC14
74HC14
U5C
6
5
74HC14
VCC
U6E
10
C8
0.1 µF
74HC14
VCC
C5
100K
0.1 µ
CN1
12
11
10
9
8
7
6
5
4
3
2
1
CON12
53047-1210
3 Track Only Use
11

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