Sharp MD-C2 Service Manual page 59

IN PWB-I
TP1202
100 9 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
TP1201
1
1
AVCC
R1133 2 3.2V
EFMO–I EFMO–I 10
C1201
EFMI 1.6V
3
10
R1108~R1112:22K
AGND
4 0V
R1109
AOUT–IN AOUT–IN
AIN
5 1.36V
R1111
EOUT–IN EOUT–IN
EIN 1.77V
6
R1108 TCG
TCG TCG
7 1.6V
R1110
BOUT–IN BOUT–IN
BIN
8 1.36V
FOUT–IN R1112 FOUT–IN
FIN 1.77V
9
LDON
VBAT 1.25V
10
LDVAR
WBI
11 1.6V
DTEMP
VDD1 3.17V
12
LATCH
DGND 0V
13
CLOCK
C1113 ~C1117 TEST0
14 0V
:270P(CH)
DATA
TEST1 0V
15
R1223 TEST2 0V
16
100 TP1200
X176KO
17 1.45V
R1200 100K
FODRF
FODRF 1.56V
18
FODRR R1201 100K
FODRR 1.62V
19
TRDRF R1202 120K
C1118 TRDRF 1.7V
20
1 R1203 120K
TRDRR
TRDRR 1.5V
21
R1204 82K
SLDRF
SLDRF 1.63V
22
WBO–I SLDRR R1205 82K
SLDRR 1.53V
23
R1206 62K
SPDRF
SPDRF 1.8V
24
5
SPDRR
25
R1207
62K
11
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
10
R1134
1
R1414
1K
VREF3.2V
R1455
1K
MINF
HINF R1413 R1421
1K 10K
C1407
0.047
100 99 98 97 96 95 94 93 92 91 90 89 88 87
0V
1
NC
0V
2 SBCK
MINF
LDVAR
Low reflection:2.2V
3 LDVAR 0.2V
High reflection:0.1V
TP1450
ADIS 3.2V
4
SL POS
0V
5 SFSY MECHA SLOT1 POSITION:1.7V
0V MECHA SLOT2 POSITION:1.3V
6 LOAD IN
MECHA SLOT3 POSITION:0V
MECHA LIFT UP/DOWN:3.2V
ERROR 3.1V
NC 7
C1404
0V
8 BYTE
A/B
0.022
0V
97A:0V
9 CNVSS
97B:3.2V
0V
STID OUT
10
0V
SEACH OUT
11
RESET
OTHER:0V
12 RESET 3.18V
69
LIFT UP:3.2V
R1408
NC 1.44V
13
OTHER:0V
3.3K 68
0V
LIFT DOWN:3.2V
VSS
14
MCCK
15 MCCK 1.5V
IC1401
VCC 3.2V
16
IX0276AW
3.2V
17
MD SYSTEM
DINT
18 DINT 3.1V
0V MICROCOMPUTER
DSENSE
DSENSE
19
0V
ST–ID
20
0V
SERCH
21 SERCH
MDRSW 3.15V
22
NC FSW 3.2V
23
CRTRG SW
OTHER:3.2V
57
24 OTHER:0V SLOT1 DISC IN:0V
MECHA NO DISC:3.2V
P–DOWN 3.2V OTHER:3.2V
25 56
SLOT2 DISC IN:0V
N
R1410
HDON 3.2V
26
OTHER:3.2V
3.3K 55
+ R/P SLOT3 DISC IN:0V
0V
27 LD+
PLAY:3.15V
D– 0V REC:0V
LD–
28
CIN 2V
CIN
29
R1457
INNER 3.2V
30
1K
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
R1417
10K
Q1400
RNC1404
1
2 3
3 2
0V 2.1V
406
Q1401
0K 1 0V
Q1403
RNC1404 IC1402
1 3.2V
RN2404
2 3 2 2.3V
S29294A
0V 0V
3.2V 3
EEPROM
1 0V
Q1402
RN2404
• The numbers 1 to 24 are waveform numbers shown in page 65 and 66.
7
Waveforms
C1204
0.047
TP1215
TP1218
TP1217
TP1216
6
R1208
220
7
C1205
1
1.55V
75
14
19 1V
74
13
0V
ADDATA 73
21
1.5V
72
DFCK
1.55V
20 BCLK 71
EFMMON 1.5V
1 75 FEMON
1.48V LRCK 70
17
0V
74 DADATA
69
DGND
3.17V
68
VDD3
1.58V
DOUT 67
DIN
DIC IN:1.58V
66
OTHER:0V
1.3V
65
IC1201 XO
1.3V
64
XI
LR376484
0V
63
DGND
ENDEC/ATRAC 3.17V
62
VDD1
0V
61
VPD
3.17V
60
VXI
3.2V
59
CDBCLK
SPDRR
52 EXPORT0
25 3.2V
1.4V
58
CDLRCK
51
X700KO
3.2V
57
CDDATA
0V
56 TP1211
TEST4
0V
55
TEST3
58V
54
TESO1
0V
53
EXPORT1
0V
52
58V
51
PLAY:0V
REC:1.5V
TP1210
TP1208
8
TP1203
C1203
1
10 9 8 7 6 5 4 3 2 1
11 12 13 14 15 16 17 18 19 20
VREF3.2V
R1429
47K
86 85 84 83 82 81
XRST
XRST 80
3.2V SNG/CNG 79
0V R1456
3/5 78
10K
0V
DFS1 77
3.2V DFS0 76
3.2V DAPON NC 75
0V
SBSY
74
73
LDON
3.1V LDON 72
R1454
R1444
10K
3.2V DISC5
71
100
TP1425
3.1V PCNT0 70
D1401
SHIFT– 69
SB00703Q
SHIFT+
68
TP1421
L3CLK
3.2V L3CLK
67
TP1422
L3MODE
3.2V L3MODE 66
TP1423 L3DATA
UCON3.2V
3.2V L3DATA 65
TP1424
C1410
0V
GND
64
1
3.2V DISC4 63
R1453
R1426
3.2V VCC 62 10K
1K
EEPK
3.2V EEPK
61
R1427
0V EEPD Q1801
EEPD
60
2SA1162 G
1K
EPCS
3.2V EPCS 59
3.2V
3.18V
R1428
0V PRO
EEPRO
58
1K
SLOT3
57
2.4V
Q1800
SLOT2 56
RNC1407
SLOT1
55
3
0V SYD0
SYSD0
54
2
0V SYD1
SYSD1 0V
53 1
0V SYD2
SYSD2 52
2 0V
0V SYD3
SYSD3
51
1
0V
3
R1420
10K
TP1801
0V 3.2V
5 4
DI
SK
3.2V
0V
6 3
DO
CS
0V 3.2V
7 2
GND VCC
R1425
0V
NC 0V PCNT0
8 1 100K
PRTCT
C1409
0.1
8 9
Figure 59 SCHEMATIC DIAGRAM (16/16)
6 9
should be measured by inserting the circuit,
as shown in the figre.
Connect an oscilloscope
100K
270P
TP1213
9
18
R1225
220
DADATA
ADDATA
R1211 DFCK
220
BCLK
LRCK
C1206
0.0012
23
R1212 47
C1210
22P
22
(CH)
R1217
C1207
R1215
150
1
1M
XL1201
NC
33.8688MHz
R1214
10K
R1219
R1222
10K
10K
NC
NC
NC
NC
24
L1201
0.47µH
C1709
0.01
L1200
4.7µH
28 27 26 25 24 23 22
IC1701
UDA1344
AD/DA CONVERTER
1 2 3 4 5 6 7
0V
C1708
0.01
C1705
0.047
C1706
0.01
C1700 R1709
R1705
47/4 39K
39K
R1706 R1710
1M 680K
L1701
10µH
AA.GND
Q1700
2SC2412 KR
3.2V
IC1702
NJM431U
REGULATOR
Q1702
2SA1162 G
2.46V
5.4V
1 3
R1704
R1703
R1711
820
3.3K
2 12
4.8V
(1s)
0V
R1708
AA.GND R1707
27K
AA.GND 1K
Q1701
RNC1404
BACKUP
3 0.7V
3.1V 2
1 0V
Q1804
2SA1314 C
VREF3.2V
3.2V 4.8V
R1806 R1809 R1811
1 1 1
3.3V
R1807
27K
3.1V 3.2V
4 3
IC1801
XC62EP32 5V
2
C1805
REGULATOR
1
0V
0V
1
5
R1535
47
R1514
1K
PDOWN
5V 5V
R1802
220K
(1s)
R1803
100K
R1805
(1s)
270
3 2 2 0.15V
3.1V 0V 0V 3
Q1806
0V Q1803
1 1 0V
RN1406
RN1406
10
– 59 –
MD-C2
CD SIGNAL
MD SIGNAL
MD RECORD SIGNAL
R1713
100K
L3DATA
21 20 19 18 17 16 15
8 9 10 11 12 13 14
L3CLK
L3MODE
C1716
47/4
R1712
12
TP1514
TP1515
TP1516
RESET 2 3
TP1517
3.18V 0.1V
Q1500
1 0V TP1518
RNC1407
R1525 3.3K TP1519
STID TP1500 R1526 1K
R1527 8.2K
DSCK TP1501
SERCH TP1502 R1528 8.2K
KDATA TP1503 R1529 8.2K
R1530 220
MDDATA TP1504
R1531 220
DSTB TP1505
C1503 TP1508
0.33
D.GND TP1509
L1501
1µH
R1519
120
R1532
1K
LOADIN L1503
4.7µH
R1515
1.8K
R1516
1.8K
R1512
47
R1513
47
R1511
8.2K
AA.GND
11
1
1 DIGOUT
2 GND
3 DIGIN
4
BACKUP
5 PDOWN
6 RESET
7 MD–ST
8 DSCK
9 SERCH
10 KDATA
11
MDDATA
12 DSTB
13 D.GND
14
D.GND
15 D.GND
16 D.GND
TP1510
17 DVDD
TP1511
18 DVDD
TP1512
19 FSWCK
TP1513
20 LOAD SW
TP1520
21
AVCC
TP1506
22 L IN
TP1521
23 AA.GND
TP1507
24
R IN
TP1522
25 AD.GND
TP1523
26 L OUT
TP1524
27 AA.GND
TP1525
28 R OUT
28
12