Sharp MD-X7H Service Manual page 96

MD-X8H
SITUATION :
A
B
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
1 EFMMON
AVCC
2
3 EFMI
100 99 98
4 AGND
5 AIN
6 EIN
C
7 TCG
8 BIN
9
FIN
10 VBAT
WBI
11
12 VDD1
13 DGND
14 TEST0
15 TEST1
TEST2
16
17 X176KO
D
18 FODRF
0K
19 FODRR
0K
20 TRDRF
0K
21
TRDRR
K
22 SLDRF
K
23
SLDRR
K
26 27 28
SPDRF
24
SPDRR
25
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
E
TP1215
C1206
F
1
A4
A5
A6
A7
A8
G
VREF3.2V
H
R1423
10K
• NOTES ON SCHEMATIC DIAGRAM can be found on page 31.
1
6 9
~
Waveforms
R1211
C1208
220
0.047
78 77 76
13 14
18
19
21
IC1201
LR37648 20
ENDEC
17
48 49 50
9 8 7 6 5 4 3 2 1
10
IC1202
IX2474AF
4M BIT D-RAM
12 13 14 15 16 17 18 19 20
11
2
Figure 60 SCHEMATIC DIAGRAM (15/20)
should be measured by inserting the circuit, as shown in the figure.
100K
270P
6
7
TP1210
9
TP1216
FEMON
75
DADATA
74
RC120
ADDATA
73
220
DFCK
72
BCLK
71
C1207
LRCK
70
1
23
DGND
69
R1254
VDD3
68
220
DOUT
67
DIN 66
R1202
XO
65
1M
C1203
XI 64
1
DGND
63
VDD1
62
C1205
VPD
61
12P
VXI (CH)
60
CDBCLK
59
CDLRCK
58
CDDATA
57
TEST4
56
TP1273
TEST3
55
TP1279
TESO1
54
EXPORT1
53
R1261
10K
EXPORT0
52
R1266
X700KO
51
10K
8
TP1214
R1221
220
C1952
L1203
4.7µH
3 4
– 60 –
Connect an oscilloscope.
22
R1201
150
XL1201
33.8688MHz
C1204
12P(CH)
AND GATE
IC1906
TC7ST08F
Vcc
1 5
2
R1263
GND
3 4
10K
R1967
47
C1954
15P
R1963
VDD
1 REF
(CH) 16
1.5K
LOCK
2 PD 15
R1962
3 S2
VDDA 14
220K
S1
4 AMPI 13
5 M2
AMPO 12
M1
6 VSSA 11
0.01 7 XI CKO
10
NC VSS
8 9
IC1907
TC9246F
CLOCK
GENERATOR
C1992
1 Vcc
14 0.1
2
13
3
12
D1990
4
11
1SS372
5
10
C1991
6 9
10
C1990
7 GND 8
1
IC1990
74AC04FS
INVERTOR
24
C1709
5
DADATA
ADDATA
DFCK
BCLK
LRCK
TP1911
C1951
0.047
R1969
56
C1958
0.047
C1957
100/6.3
R1968
220
C1711
0.01
C1716
0.01
28 27 26 25 24 23 22 21 20 19
IC1701
UDA1340
A/D,D/A CONVER
6