Sharp MD-X7H Service Manual page 101

C1711
0.01
C1716
0.01
L3DATA
28 27 26 25 24 23 22 21 20 19 18 17 16 15
IC1701
UDA1340
A/D,D/A CONVERTER
1 2 3 4 5 6 7 8 9
10 11 12 13 14
1
1
713 R1714
39K 39K
R1702
1701
1M 680K
C1712
47/4
KR
C1707
10/16
17
0
R1806
12
R1807
1804
C1704
12
62 G
1
R1811
R1810
1K 27K
2
1
• The numbers 1 to 24
7
R1712
100K
C1715
22/4
L3CLK
L3MODE
R1708
4.3K
are waveform numbers shown in page 70 and 71.
8
Figure 65 SCHEMATIC DIAGRAM (20/20)
MD PLAYBACK SIGNAL
MD RECORD SIGNAL
R1939
1K
R1456
1K
LOADIN
Q1451
RESET
RNC1407
2
3
1
STID
DSCK
SERCH
KDATA
MDDATA
DSTB
R1463
10K
C1904
0.33
C1460
L1950
LR190
1
4.7µH
R1995
2.2K
R1994
R1731
2.2K
47
R1707 R1733
C1729
4.3K 47
220P(CH)
R1734
R1735
47K
47K
CJ172
C1722
220P 100P
(CH) (CH)
9 10
– 65 –
R1947
47
JC121
0.047
PDOWN
CNS1902
1 PDOWN
TP1502
2 BACKUP
TP1503
R1452
3 LOAD SW
3.3K
TP1504
4 RESET
R1454 1K
TP1505
5 MD-ST
R1458 6.8K
TP1506
6 DSCK
R1460 6.8K
TP1507
SERCH
7
R1462 6.8K
TP1508
8 KDATA
R1464 220
TP1509
9
MDDATA
R1466 220
TP1510
DSTB
10
TP1511
D.GND
11
C1425
TP1512
D.GND
12
0.047
D.GND
13
D.GND
D.GND
14
TP1515
DVDD
15
DVDD
16
1µH
TP1516
AVCC
17
TP1517
TP1518
L IN
18
TP1519
AA.GND
19
TP1520
R IN
20
TP1521
AD.GND
21
TP1522
L OUT
22
TP1523
AA.GND
23
TP1524
R OUT
24
C1724
22P
(CH)
AA.GND
11
MD-X8H
MD FLAT
CABLE (42)
1 CNP950
P41 12 - C
TO MAIN PWB
24
12