JVC DR-MH300SAA Service Manual page 37

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DC/DC Converter board
<02>
LPB20041-001A
Forward side
R5732
R5730
IC5701
R5731
C5731
C5732
C5711
R5712
IC5710
C5723
C5713
C5724
K5710
C5725
C5726
C5715
D5721
CN5701
CN5702
Demodulator board
<14>
LPB10292-001A
C6716
C6719
R6721
R6720
K6706
C6720
R6715
R6714
IC6701
C6722
C6724
L6702
C6703
R6704
K6702
R6707
X6701
C6706
R6706
Q6701
R6705
C6702
B6701
R6701
R6702
RGB-Y/C Converter board
<68>
LPB10291-001A
R4401
C4420
C4416
IC4404
C4421
C4403
R4413
R4403
IC4403
R4405
IC4402
R4411
L4401
CN4402
Reverse side
CN5701
CN5702
C6717
B6702
R6712
C6715
R6716
R6711
R6710
CN6701
IC4401
R4412
VOLTAGE CHARTS
<MAIN>
MODE
MODE
MODE
MODE
P.ON
P.ON
P.ON
PIN NO.
PIN NO.
PIN NO.
PIN NO.
1
0
IC3001
97
0
1
0
98
0
2
1.9
2
0
99
0
3
5.0
3
4.9
100
0
4
1.5
4
4.9
IC3002
5
0
IC7302
6
1.7
5
2.1
1
4.9
2
5.0
IC4301
6
4.7
7
4.8
3
0
1
0
8
0
4
0
2
4.9
9
4.6
IC3004
3
0.7
10
0
1
0
4
0
2
0
5
0.3
IC7303
11
0
12
0
3
0
6
3.9
13
0.3
4
0
7
5.0
14
4.0
5
4.9
8
0
15
0
6
4.9
9
5.0
10
0.1
16
0.3
7
0
17
4.9
8
4.9
IC4304
18
4.9
IC4001
1
0
19
4.9
1
0
2
4.7
20
4.5
2
2.8
3
5.0
21
4.9
3
4.9
4
4.8
4
2.8
5
0
22
0.1
23
0.1
5
0
6
0
24
4.8
6
0
7
4.4
25
0
7
2.8
8
0
26
5.0
8
2.9
9
4.7
10
0.2
27
2.0
9
2.7
28
0
10
0
11
4.6
IC7304
29
0
11
1.3
12
0
30
0
12
5.0
13
5.0
31
4.9
13
1.3
14
4.8
15
0
32
4.8
14
0
15
1.3
16
5.0
33
4.9
34
4.9
16
0.1
IC5101
35
4.8
17
1.7
1
302.2
IC8001
36
4.9
18
0
2
0
37
2.4
19
0
3
0
20
0
4
16.4
38
2.3
39
0
21
0
5
2.4
40
1.9
22
0
IC5301
41
0
23
2.2
1
2.4
42
0
24
5.0
2
0
3
4.6
43
0
25
0
44
0
26
0
IC5302
45
0
27
0
1
5.0
46
0
28
0
2
0
47
0
29
5.0
3
0
48
0
30
5.0
4
3.3
31
0
5
4.9
49
0
50
0
32
0
6
0
51
4.9
33
0
7
0
52
0
34
0
8
5.8
53
0
35
0
IC5303
1
4.8
54
0
36
5.0
55
4.8
37
5.0
2
4.9
56
0
38
1.2
3
5.4
57
5.0
39
0
4
3.9
58
4.9
40
1.3
5
3.2
6
0
59
0
41
0
42
1.6
7
0
60
0
61
4.8
43
5.0
8
0
62
0
44
1.3
IC5308
63
0
45
0
1
5.7
64
0
46
1.8
2
4.8
47
5.0
3
5.2
65
0
66
0
48
1.3
4
1.1
67
0
49
0
5
0
68
0
50
0
IC7301
69
0
51
0
1
4.9
2
0
70
0
52
0
71
0
IC4201
3
0
72
0
1
0
4
2.1
73
0.1
2
2.4
5
4.9
74
0
3
2.4
6
0.3
75
0
4
0
7
5.0
5
0
8
1.3
76
0
77
0
6
5.0
9
2.1
78
0
7
4.9
10
0
79
0
8
5.0
11
1.6
IC8201
80
4.9
9
4.7
12
0
13
2.1
81
0
10
0.1
82
0
11
2.8
14
4.9
83
0
12
2.9
15
2.0
84
0
13
1.2
16
4.9
85
0.7
14
0
17
2.2
18
0
86
3.9
15
5.0
16
2.9
19
0
87
0
88
5.0
17
2.5
20
2.2
89
4.9
18
4.6
21
2.2
90
0
19
5.0
22
0
91
0
20
0
23
1.6
21
0
24
1.6
92
0
93
4.8
22
3.6
25
0
94
4.9
23
5.0
26
0.8
95
0
24
5.0
27
0.8
96
0
IC4202
28
0
2-53
2-54
MODE
MODE
MODE
MODE
P.ON
P.ON
P.ON
P.ON
P.ON
PIN NO.
PIN NO.
PIN NO.
PIN NO.
29
0.8
IC8202
C
7.6
B
1.2
CN4101
30
0
1
0
B
6.9
Q7321
1
0.2
31
0
2
1.2
Q5305
E
0
2
0.2
C
5.0
3
2.8
32
2.2
3
1.2
E
0
4
-9.1
C
0
B
0
4
4.1
1
0
5
1.2
B
4.8
Q7451
5
0
2
1.9
6
1.2
Q5306
E
0
6
5.0
3
5.0
7
0
E
12.0
C
5.0
7
4.8
8
3.2
4
4.1
8
10.4
C
12.0
B
0
B
11.3
Q7452
9
0
5
0
IC8301
6
1.7
1
7.3
Q5307
E
5.0
10
0
2
0
E
11.9
C
0
11
0
1
0
3
7.2
C
11.9
B
4.9
12
2.3
2
0
4
0
B
11.3
Q8201
13
0
E
0
14
1.8
3
0
5
6.6
Q5308
6
0
E
11.8
C
4.9
15
1.8
4
1.8
5
1.8
7
6.6
C
11.8
B
0
CN4102
6
0
8
0
B
0
Q8202
1
1.6
7
-4.0
9
7.3
Q5309
E
5.0
2
1.5
C
-4.9
3
0.3
8
0
10
11.0
E
0
C
0
B
4.8
4
1.5
9
0
11
7.3
10
0
12
0
B
4.0
Q8203
5
0.2
11
0
IC8302
Q5310
E
0
6
3.1
12
0
1
7.2
E
5.1
C
0
7
3.1
8
2.6
13
0.1
2
0
C
5.7
B
-4.9
B
5.6
Q8205
9
0
14
0.6
3
7.3
15
0.6
4
0
Q5311
E
0
10
0
16
5.0
5
6.6
E
0
C
0
11
0
6
0
C
0
B
-4.9
12
1.0
1
0
7
6.6
B
4.9
Q8301
13
0
E
0
14
1.4
2
2.1
8
0
Q5312
9
7.2
E
0
C
0
15
1.6
3
5.0
4
2.9
10
11.0
C
0
B
-4.9
CN4103
5
0
11
7.2
B
4.9
Q8302
1
3.1
6
2.8
12
0
Q5313
E
0
2
4.0
3
0
IC8303
E
0
C
0
C
-9.9
B
-4.9
4
0
1
2.4
1
0
2
0
2
0
B
-9.3
TU6001
5
0
3
2.4
3
0
Q5314
1
5.0
6
0
4
0
4
-9.1
E
5.7
2
0
7
0.6
5
2.4
5
0
C
5.7
3
0
8
0.6
4
4.9
9
1.1
6
0
6
0
B
0
7
0
Q5315
5
0
10
0.6
7
0
8
0
8
10.3
E
0
6
0
11
0
9
0
IC8501
C
0
7
0
12
2.2
10
0
1
3.2
B
4.1
8
3.9
13
1.8
14
0
11
2.4
2
1.5
Q5316
9
0
E
11.2
10
4.7
15
3.1
12
2.4
3
1.5
13
2.4
4
0
C
12.0
11
0
16
0
14
2.4
5
0
B
11.8
12
5.0
17
2.0
15
0
6
0
Q6030
13
4.9
18
0
19
0
16
0
7
0
E
4.4
14
0.5
C
0
15
0
20
4.9
17
0
8
1.6
9
1.6
B
3.8
16
2.0
21
0
18
0
19
0
10
3.2
Q6031
17
32.9
22
0
20
3.3
11
1.6
E
0
18
0
23
0
21
0
12
1.6
C
3.8
19
0
CN4401
CN3001
1
0
22
1.5
13
3.2
B
0
14
3.2
Q7301
1
4.0
2
1.4
23
1.5
24
1.6
Q3004
E
0
2
4.7
3
0
25
0
E
0
C
11.1
3
0.2
4
0
26
0.1
C
0
B
0
4
4.9
5
4.6
6
0
27
0
B
0.5
Q7302
5
4.8
E
10.5
6
4.9
7
4.6
28
0
Q3005
29
0
E
0
C
11.1
7
0
8
1.9
30
0
C
3.1
B
11.1
8
4.9
9
5.0
31
4.9
B
0
Q7310
9
0
10
0
32
5.0
Q3007
E
5.0
10
0
11
0
11
-18.9
12
0
33
0
E
0
C
0
C
4.8
B
4.4
12
-27.9
CN5301
34
0
35
0
B
0
Q7311
13
-14.8
1
12.0
36
2.4
Q4001
E
0
CN3004
2
0
37
0
E
1.8
C
0
1
5.0
3
0
2
5.7
4
5.2
38
0
C
0
B
0
Q7312
3
3.2
CN5303
39
0
B
0
40
0
Q4101
E
0
4
0
1
7.5
41
0
E
4.9
C
4.4
CN3901
2
0
42
0
C
5.7
B
0
1
4.0
CN5304
1
11.9
43
0
B
5.7
Q7313
2
4.9
E
0
3
0
2
0
44
2.4
Q4201
E
2.0
C
0
4
0.2
3
0
1
1.6
C
5.0
B
4.8
5
0.1
4
2.2
2
1.5
B
2.5
Q7314
6
0
CN5305
3
1.5
Q5301
E
0
7
4.9
1
4.8
8
4.9
2
1.9
4
1.6
E
-13.4
C
0
C
-13.3
B
4.8
CN4001
3
1.9
5
2.9
6
3.1
B
-12.5
Q7315
1
0
4
0
7
2.6
Q5302
E
0
2
0
5
0
8
0
E
5.7
C
11.1
3
0
6
0
7
0
9
2.4
C
5.6
B
0
4
0
Q7316
5
0
8
5.8
10
0
B
0.4
11
2.4
Q5303
E
11.1
6
0
9
0
12
2.3
E
0
C
0
7
0
10
0.9
13
0
C
0
B
11.1
8
0
11
2.5
14
4.8
B
4.8
Q7317
9
0
12
0
10
0
13
5.8
15
0
Q5304
E
1.8
E
7.6
C
0
11
0
14
0
16
0
<DISPLAY>
MODE
MODE
P.ON
P.ON
PIN NO.
PIN NO.
CN6701
IC7001
1
0
1
0
2
5.1
2
0
3
5.0
3
0
4
0
4
0
5
0.9
5
2.8
6
0.9
6
4.9
7
4.9
7
0
8
0
8
4.8
9
0
9
4.8
10
2.0
10
0
CN7451
11
0
1
3.2
12
0
2
3.1
13
5.0
3
0
14
-26.9
4
2.0
15
-26.9
16
-17.0
17
-29.4
<OPERATION>
MODE
18
-29.4
P.ON
PIN NO.
19
-29.4
IC7101
20
-26.9
1
4.9
21
-29.3
2
4.9
22
-17.4
3
0
23
-17.3
Q7101
24
-29.4
E
0
25
-26.9
C
1.4
26
-29.3
B
1.5
27
-29.4
CN7103
28
-29.4
1
0
29
-27.0
2
4.9
30
-30.0
3
5.0
31
-27.3
4
-26.9
32
-27.3
5
0
33
-27.3
6
-26.9
34
-27.3
7
0
35
-27.3
8
0
36
-27.3
9
0
37
-27.3
10
4.0
38
-27.3
39
-27.3
<SW/JACK>
40
-27.3
MODE
P.ON
41
-27.3
PIN NO.
42
0
CN7101
43
5.0
1
0
44
0
2
0
CN7001
3
-29.4
1
4.0
4
-29.3
2
4.7
5
-29.4
3
0.2
6
-26.9
4
4.9
7
-29.3
5
4.8
8
0
6
4.9
9
4.1
7
0
10
5.0
8
4.9
CN7102
9
0
1
0
10
0
2
0
11
-18.9
3
0
12
-27.9
4
0
13
-14.8
5
0
CN7002
6
0
1
5.0
7
0
2
4.1
8
0
3
0
9
0
4
-29.3
10
0
5
-26.9
11
0
6
-29.4
7
-29.3
<JACK>
8
-29.4
MODE
P.ON
PIN NO.
9
0
CN4204
10
0
1
0
CN7003
2
0
1
4.0
3
0
2
0
4
0
3
0
5
0
4
0
6
3.2
5
-26.9
7
3.2
6
0
8
0
7
-26.9
9
0
8
5.0
9
4.9
10
0

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