Sharp XL-70 Service Manual page 28

XL-70/70C
A
PU_IN
1
CD_STB
2
BUS0
3
BUS1
4
BUS2
5
B
BUS3
6
BUCK
7
CCE
8
9
10
11
12
13
C
D
E
F
G
DIGITAL OUT PWB-A8
1
2
L804
3 1
0.82µH
J801 C852
CD DIGITAL 0.0022
OUTPUT (ML)
H
• The numbers 1
• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
1
R877 R876
68K 150K
CLID_SW
CLID_PRO
CLID_UP
CLID_DW
R813
10
C825
0.056
R817 R818
1K
1K
C827
15P
(CH)
C826
C834 15P
C833
470P (CH)
470P
R815 R816
10K
10K
C832
C831
10/16 10/16
80 79 78 77 76 75 74 73 72 7170 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
0V
DVSR
81
82
RO 2.4V
C828
C830
83
DVDD 0V
0.056 100/10
84
DVR 2.3V
85
LO 2.4V
86
DVSL 0V
C840
87
NC TEST1 5V
100/10
R819 C862 88
NC TEST2 5V
220 0.0022
89
5V
NC TEST3
90
BUS0 4.3V
91
BUS1 4.3V
92
BUS2
4.3V
93
BUS3
4.3V
94
VDD
5V
C835
95
VSS
0V
0.056
96
BUCK 4V
97
/CCE 3.3V
98
5V TEST4
NC
5V
99
NC
/TSMOD
100
/RST
C837
4.9V
470P
1 2 3 4
3 3 3
2
2 2
1
1
+B
to 17 are waveform numbers shown in page 19.
2
Figure 28 SCHEMATIC DIAGRAM (5/6)
CD SIGNAL
CD LID PWB-A9
CFW806
1
1
3 3
SW802
CD LID
+B
C824
0.056
C822
220/10
17
16
IC802
TC9462F
SERVO/SIGNAL CONTROL
5 6 7 8 9 10 11 12 13 14 15 16 18
17
13
R851
330
C820
0.01
3 4
– 28 –
IC805
TA7291S
1 2 3 4 5 6 7 8
R872
2.2
C871
(1/2W)
47/16
R874
2.2K
R880
47K
R814
3.3K
R812
C823
C819
3.3K
0.01
0.1
C818
0.1
4
R811
2.2K
15
R810
3.3K
VREF
50
2.1V
49
2.1V TRO
11
48
2.2V FOO
14
1
47
2.2V TEZI
46
2.2V TEI
6
45
2.1V TSIN
44
2.1V SBAD
7
43
2.2V FEI
5
42
2.1V RFRP
41
2.1V RFZI
40
2.1V RFCT
39
5V AVDD
38
2.1V RFI
37
SLCO
2.1V
36
0V AVSS
35
1.4V VCOF
VCOREV
34
2.1V
PVREV
33
2.1V
LPFO
32
2.1V
LPFN
31
2.1V
19 20 21 22 23 24 25 26 27 28 29 30
R804
100K
R802
47K
R801
10K
C829
C838
100/10
47/10
5
IC805
TA7291S
CD MOTOR
9
DRIVER
C872
0.1
L80
10µ
C821
0.1
C817
0.1
C810
0.001
R809
C811
10K 47/10
R808
C809
3.3K 0.0047
C807
0.033
R807
10K
C806
0.0047
C805
0.0027
C804
0.01
C803
47/10
R806
C802
C8
15K
12
0.015 47
C801
100P
+B
6