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Kenwood DTF-2 Service Manual page 7

Digital satellite receiver

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K
L
A
D
E
+3.3VD
+5VDU
+3.3VA
5VA
+5VA
C
B
A1
5.0V
4.9V
TP26
TP27
5.0V
Q29
32.7V
3.1V
R341
4.2V
10K
C178
C191
22u50
220u10
+
+
PON
C177
C188
Q33
1000P
0.1
3.2V
+3.3VA
+32V
D48
TP12
TP13
Q30
D55
R339
10K
R347
Q31
D56
10K
Q32
Q35
Q34
L49
1uH
+21/17V
R349 3.3
R352 3.3
22.0V
Q36
R355 3.3
22.0V
Q38
Q37
21.4V
0V
21.9V
D58
Q39
R366
R369
0V
0V
68K
Q43
4.7K
C224
100P
0V
0V
Q42
0V
Q45
Q41
0V
0V
Q44
Q46
R124 10K
R125 10K
R126 10K
R127 10K
R128 10K
3.2V
19
17
15
13
11
9
7
5
3
1
20
18
16
14
12
10
8
6
4
2
JP1
M
N
+3.3VD
+5VDU
+3.3VA
5VA
+5VA
+32V
+21/17V
+3.3VD
D
E
IC7
1
48
36
A15
A16
2
47
56
A14
BYTE
+3.3VD
3
46
17
A13
VSS
4
45
37
A12
DQ15/A-1
10
5
44
57
A11
DQ7
32
6
43
77
A10
DQ14
30
7
42
18
A9
DQ6
52
8
41
38
A8
DQ13
50
9
40
NC
DQ5
13
10
39
NC
DQ12
11
11
38
WE
DQ4
33
12
37
RESET
VCC
+3.3VD
13
36
NC
DQ11
31
14
35
NC
DQ3
53
15
34
RY/BY
DQ10
51
16
33
55
A18
DQ2
73
17
32
75
A17
DQ9
71
18
31
39
A7
DQ1
14
19
30
19
A6
DQ8
12
20
29
20
A5
DQ0
34
4.9V
21
28
40
A4
OE
128
C49
22
27
0.01
60
A3
VSS
23
26
59
A2
CE
94
IC10
24
25
58
A1
A0
(5/5)
7
14
80
IC10
(1/5)
206
1
3
2
+5VDS
R148
22K
IC10
(2/5)
4
6
51
5
NC
52
111
WRITE
53
110
CS
54
128
READ
55
238
59
RS4
56
58
RS3
57
4.9V
80
RS2
58
103
RS1
59
102
RS0
R162 4.7K
60
TEST1
186
61
41
SLEEP
R164 1K
62
RING
63
C46
EYEY
100u10
64
EYEX
+
65
EYESYNC
C47
66
DGND
0.1
R163 10K
67
NC
68
205
RESET
245
C43 39P
69
XTALI
X3
24.00014MHz
70
XTALO
C45 39P
71
+5VD
72
+5VD
73
+5VD
74
GP18
75
R175
GP16
1K
76
XTCLK
77
DGND
78
R176
DGND
1K
79
TXD
80
DGND
R174
3.2V
22K
+3.3VD
+3.3VD
O
P
A
+3.3VD
+5VDU
+3.3VA
5VA
+5VA
+32V
+21/17V
C
B
+3.3VD
D
E
+3.3VD
+3.3VD
C23
100u10
IC8
IC9
+
1
48
1
C25
C26
36
A15
A16
56
A15
A16
0.1
2
47
0.1
2
56
A14
BYTE
+3.3VD
17
A14
BYTE
3
46
3
17
A13
VSS
37
A13
VSS
4
45
4
37
A12
DQ15/A-1
5
57
A12
DQ15/A-1
5
44
5
57
A11
DQ7
47
77
A11
DQ7
6
43
6
77
A10
DQ14
25
18
A10
DQ14
7
42
7
18
A9
DQ6
67
38
A9
DQ6
8
41
8
38
A8
DQ13
45
39
A8
DQ13
9
40
9
NC
DQ5
28
NC
DQ5
10
39
10
NC
DQ12
6
NC
DQ12
11
38
11
WE
DQ4
48
WE
DQ4
12
37
12
RESET
VCC
+3.3VD
RESET
VCC
13
36
13
NC
DQ11
26
NC
DQ11
14
35
14
NC
DQ3
9
NC
DQ3
15
34
15
RY/BY
DQ10
46
RY/BY
DQ10
16
33
16
55
A18
DQ2
29
75
A18
DQ2
17
32
17
75
A17
DQ9
7
16
A17
DQ9
18
31
18
39
A7
DQ1
49
19
A7
DQ1
19
30
19
19
A6
DQ8
27
20
A6
DQ8
20
29
20
20
A5
DQ0
69
40
A5
DQ0
21
28
21
40
A4
OE
128
60
A4
OE
22
27
22
60
A3
VSS
59
A3
VSS
23
26
23
59
A2
CE
94
58
A2
CE
24
25
24
58
A1
A0
80
A1
A0
TP18
80
R16
TP19
100
D50
+5VDS
30
AGND
29
C32
VC
4.9V
28
C34
0.1
AGCIN
27
2200P
C36
RFILO
26
1000P
NC
25
RXA
24
C42
NC
23
0.1
12.1V
TXA1
22
TXA2
21
C33
AGND
20
0.1
C41
NC
19
100u10
3
TP11
SPKR
+
18
2
+5A
+5VDS
17
IC12
MODEI
16
DGND
15
D0
15
14
D1
14
13
D2
13
5
12
D3
12
6
11
D4
11
10
R173
D5
10
9
D6
9
10K
8
D7
8
7
DGND
IC13
6
DGND
1
5
DIR
NC
2
4
34
A1
NC
3
3
14
A2
NC
4
2
73
A3
NC
5
1
53
A4
NC
6
33
A5
7
13
A6
8
52
A7
9
32
A8
10
GND
+3.3VD
Q
R
3.2V
IC5
C28
C24
48
0.1
100u10
1
50
+3.3VD
VCC
VSS
47
+
2
49
34
I/O0
I/O15
10
46
C27
3
48
14
I/O1
I/O14
30
45
0.1
4
47
102
73
I/O2
I/O13
50
44
5
46
32
53
I/O3
I/O12
11
43
6
45
+3.3VD
VCC
VSS
42
7
44
52
33
I/O4
I/O11
31
41
8
43
13
I/O5
I/O10
51
40
9
42
13
52
I/O6
I/O9
71
39
10
41
32
I/O7
I/O8
12
38
11
40
33
NC
NC
37
12
39
+3.3VD
36
13
38
35
14
37
53
34
15
36
NC
NC
33
16
35
73
NC
LCAS
87
32
17
34
104
WE
UCAS
88
31
18
33
14
95
RAS
OE
128
30
19
32
NC
A9
38
29
20
31
34
NC
A8
39
28
21
30
128
103
A0
A7
19
27
22
29
80
A1
A6
20
26
23
28
93
58
A2
A5
40
25
24
27
103
59
A3
A4
60
25
26
12.1V
+3.3VD
VCC
VSS
+12VS
+12VS
+5VDS
+5VDS
4.9V
R144
4.7K
Q2
Q54
38
D5
PH1
PH2
2
3
Q3
D6
36
R149
330
1
4
Q50
R157
2K
IC11
(1/2)
C275
R165
8
10u50
470
1
+
4
T1
R160
10K
IC11
(2/2)
C276
R169
R170
D4
D11
C39
A
7
10u50
18K
18K
0.22
+
PH5
1
2
4
3
3.2V
20
VCC
+3.3VD
19
OE
18
C48
B1
15
17
47u25
B2
14
16
+
B3
13
C50
15
B4
12
0.1
14
B5
11
13
B6
10
12
B7
9
11
B8
8
S
T
A
+3.3VD
+5VDU
+3.3VA
5VA
+5VA
+32V
+21/17V
C
B
4.9V
R143
4.7K
Q55
4.9V
R154
K1 1
12
5
4
3
8
9
10
Q7
R167 100
PH4
1
2
4
3
3
1
4
2
J5
MOD JACK

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