Sharp MD-R3 Service Manual page 49

R1211 C1208
220 0.047
TP1275
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
TP1274 1 EFMMON
2 AVCC
C1202
3 EFMI
100 99 98
1
13 14
4
AGND
5 AIN
6 EIN
7 TCG
8 BIN
9 FIN
10 VBAT
WBI
11
C1211
VDD1 IC1201
12
1
13 DGND LR376481
ENDEC
14 TEST0
15 TEST1
TEST2
16
R1653
17 X176KO
100K
18 FODRF
R1651 100K
19 FODRR
R1657 120K
20 TRDRF
R1655 120K
21 TRDRR
R1661 82K
22 SLDRF
R1659 82K
48 49 50
23 SLDRR
R1665 62K
26 27 28
SPDRF
24
25 SPDRR
R1663
62K
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
11
10
TP1215
10 9 8 7 6 5 4 3
C1206
1
IC1202
IX2474AF
4M BIT-D-RAM
11 12 13 14 15 16 17 18
A4
A5
A6
A7
A8
VREF3.2V
R1423
10K
R1418
47K
91 90 89 88 87 86 85 84 83 82 81
XRST
XRST 80
DIGCD
79
DIGEX
78
82 81
DFS1
77
DFS0 76
DAPON
75
ADPON
74
A/B
73
R1477
LDON 72
LDON 10K
PCNT1 71
TP1416
PCNT0
70
69
C1401
68
0232AW
L3CLK
67
MICROCOMPUTER
L3MODE
66
R1475
C1406
L3DATA 65
1 1K
GND
64
CON 3.2V
63
R1476
VCC 62
1K
EEPK
EEPK 61
EEPD
EEPD
60
EPCS
EPCS
59
R1474 PRO
EEPRO
58
1K
57
Q1820
56 2SA1162G
55
SYD0
SYSD0 54
SYD1
49 50 SYSD1 53
SYD2
SYSD2
52 Q1821
SYD3 RNC1407
SYSD3
51
3 2
1
40 41 42 43 44 45 46 47 48 49 50
Q1822
RNC1407
1
IC1402
S29294A
5 DI SK 4
6 3
DATA CS
R1416
10K R1473
7 VCC 2
GND
100K
C1405
8 1
PRTCT
0.1
2
E -PROM
The numbers 1 to 23 are waveform numbers shown in page 60, 61.
7
ANALOG PLAY BACK SIGNAL
DIGITAL RECORD SIGNAL
6 7
DIGITAL PLAYBACK SIGNAL
TP1210
9
TP1216
FEMON
75
DADATA
74
78 77 76
ADDATA
73
DFCK
72
BCLK
71
C1207
LRCK 70
1
23 22
DGND 69
18
R1254
VDD3
68
220
DOUT
19 67
DIN 66
R1202
XO
65
21
1M
C1203
XI
64
1 R1201
DGND
63 150
20
XL1201
VDD1
62
33.8688MHz
C1205
VPD C1204
61
17 12P
12P(CH)
VXI (CH)
60
CDBCLK 59
AND GATE
CDLRCK
58
IC1906
CDDATA
57
TC7ST08F
TEST4
56
TP1273
TEST3 55 1 Vcc
TP1279
TESO1
54 2
R1263
EXPORT1 3 GND
53 R1261
10K
10K
EXPORT0
52
R1266
X700KO 51 10K
R1967
47
8
CLOCK GENERATOR
C1954
15P
R1963
1
(CH) REF
1.5K
TP1214
R1221
2 PD
220
R1962
3 VDDA
220K
4 AMPI
5 AMPO
6 VSSA
C1952
0.01 7 XI
NC
8
IC1907
TC9246F
2 1
C1992
0.1
1 Vcc 14
2 13
3
12
D1990
4
11
1SS372
19 20
5 10
6 9
C1990
7 GND 8
1
IC1990
74AC04FS
L1203
4.7 H
INVERTER
BACKUP
Q1807
2SA1314C
VREF3.2V
TP1802
R1821 R1820
C1807 1 1
220/4
R1827 R1808
R1809
270 27K
390
4 3
2
2
1
5
IC1801
XC62EP32
3
REGULATOR
Q1801
2SA1314C
TP1801
R1804 C1801
220K 2.2
P.GND
R1805 R1802
100K 270
PCNT0
3 2 2 3
Q1802
Q1803
RN1406
RN1406 1 1
8 9
Figure 49 SCHEMATIC DIAGRAM (10/10)
MD MAIN PWB-E
DADATA
ADDATA
DFCK
BCLK
LRCK
AND GATE
IC1916
74VHC08F
TP1911
8 GND 7
9 6
C1951
5 5
10
0.047
4
11
4 3
12
2
13
14 Vcc 1
R1969
56
C1958
C1927
0.047
0.047
C1957
VDD
16
100/6.3
LOCK 15
S2 14
S1
13
M2
12
M1
11
CKO 10
R1968
VSS
9
220
C1991
10
BACKUP
DFCK
AD
LRCK
BCLK
DADATA
R1759
1K
R1758
1K
10
– 49 –
R1927
CN1904
22
DOUTO TP1901
1 DIGOUT
TO MAIN PWB
TP1902
2 GND
CNP301
3 GND
P46 3 - H
TP1904
4 DIGIN
R1974
220
R1973
6.8K
R1947
47
PDOWN
R1939
1K
R1456
1K
LOADIN
RESET Q1451 TP1502
RNC1407
2 TP1503
R1452
3 3.3K
TP1504
1
TP1505 R1454 1K
STID
R1458 6.8K
DSCK TP1506
R1460 6.8K
SERCH TP1507
R1462 6.8K
KDATA TP1508
MDDATA TP1509 R1464 220
R1466 220
DSTB TP1510
TP1511
R1463
10K
C1425
TP1512
0.047
D.GND
L1950
1 H
TP1515
C1917 JC196
LR190
68P 22P
TP1516
22
(CH) (CH)
TP1517
TP1518
TP1519
TP1520
TP1521
R1994
47
TP1522
TP1523
TP1524
C1724 JC171
R1708 R1733
22P
22P
6.8K 1K
(CH)
(CH)
AA.GND
11
MD-R3
P46 4 - H
TO MAIN PWB
CNP401
CN1902
1 PDOWN
2 BACKUP
3 LOAD SW
4 RESET
5 MD-ST
6 DSCK
SERCH
7
8 KDATA
9 MDDATA
10 DSTB
D.GND
11
D.GND
12
D.GND
13
14 D.GND
15 DVDD
DVDD
16
17 SYSCLK
18 ADDATA
LRCLK
19
20 BLCK
21 DADATA
DFS1
22
DFS0
23
24 MUTE
12