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LG Manuals
DVD Recorder
RH4820W
Service manual
Circuit Voltage Chart - LG RH4820W Service Manual
Hdd/dvd recorder
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Contents
Table of Contents
Troubleshooting
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• CIRCUIT VOLTAGE CHART
MODE
MODE
EE
PB
REC
EE
PIN NO.
PIN NO.
IC202
6
2.5
1
0.03
0.03
0.03
7
2.5
2
0.03
0.03
0.03
8
1.23
3
0.03
0.03
0.03
IC302
4
0.03
0.03
0.03
1
3.25
5
0.03
0.03
0.03
2
3.25
6
0.03
0.03
0.03
3
0
7
0.03
0.03
0.03
4
0
8
3.29
3.29
3.29
5
3.25
9
0.03
0.03
0.03
6
0
10
0.03
3.29
3.29
7
3.25
11
3.29
3.29
3.29
8
3.25
12
3.29
3.29
3.29
9
3.25
13
0
0
0
10
3.25
14
3.29
3.29
3.29
11
0
15
0.23
0.25
0.25
12
3.25
16
0.03
0.03
0.03
13
3.25
17
0.03
0.03
0.03
14
3.25
18
0.03
0.03
0.03
15
3.25
19
0.03
0.03
0.03
16
0
20
0.03
0.03
0.03
17
0
21
3.29
3.29
3.29
18
3.25
22
3.29
3.29
3.29
19
3.25
23
3.29
3.29
3.29
20
3.25
24
3.29
3.29
3.29
21
3.25
25
3.29
3.29
3.29
22
0
26
3.29
3.29
3.29
23
3.25
27
0
0
0
24
0
28
3.29
3.29
3.29
25
3.25
29
2.94
2.93
2.93
26
0.05
30
2.94
2.93
2.93
27
3.25
31
0
0
0
28
3.25
32
0
0
0
29
3.25
33
0
0
0
30
0
34
0
0
0
31
3.25
35
2.94
3.08
3.08
32
0.3
36
0
0
0
33
3.25
37
3.29
3.29
3.29
34
3.25
38
2.94
2.93
2.93
35
0
39
2.94
2.93
2.93
36
0
40
2.94
2.93
2.93
37
0
41
2.94
2.94
2.94
38
0
42
0
0
0
39
0
43
0
0
0
40
3.25
44
0
0
0
41
3.25
45
0
0
0
42
3.25
46
0
0
0
43
0.04
47
3.29
3.29
3.29
44
0.04
48
0.03
0.03
0.03
IC401
IC208
1
0
1
0
0
0
2
1.59
2
0
0
0
3
0
3
1.23
1.23
1.23
4
0.04
4
1.24
1.23
1.23
5
0
5
2.5
2.49
2.49
6
3.25
MODE
PB
REC
EE
PB
REC
PIN NO.
2.49
2.49
7
0.02
0.02
0.02
2.49
2.49
8
0.02
0.02
0.02
1.23
1.23
9
3.25
3.25
3.25
10
0
0
0
3.25
3.25
11
0
0
0
3.25
3.25
12
0
0
0
0
0
13
0
0
0
0
0
14
0
0
0
3.25
3.25
15
0
0
0
0
0
16
0
0
0
3.25
3.25
17
3.25
3.25
3.25
3.25
3.25
18
0
0
0
3.25
3.25
19
3.25
3.25
3.25
3.25
3.25
20
0
0
0
0
0
21
0
0
0
3.25
3.25
22
0
0
0
3.25
3.25
23
0
0
0
3.25
3.25
24
0
0
0
3.25
3.25
25
3.25
3.25
3.25
0
0
26
3.25
3.25
3.25
0
0
27
3.24
3.24
3.24
3.25
3.25
28
0
0
0
3.25
3.25
29
3.25
3.25
3.25
3.25
3.25
30
3.25
3.25
3.25
3.25
3.25
31
3.25
3.25
3.25
0
0
32
0
0
0
3.25
3.25
33
0
0
0
0
0
34
3.25
3.25
3.25
3.25
3.25
35
3.25
3.25
3.25
0.05
0.04
36
0
0
0
3.25
3.25
37
0
0
0
3.25
3.25
38
0
0
0
3.25
3.25
39
0
0
0
0
0
40
0
0
0
3.25
3.25
41
0
0
0
0.3
0.3
42
0
0
0
3.25
3.25
43
0
0
0
3.25
3.25
44
3.24
3.24
3.24
0
0
45
3.24
3.24
3.24
0
0
46
3.25
3.25
3.25
0
0
47
3.25
3.25
3.25
0
0
48
0
0
0
0
0
49
0
0
0
3.25
3.25
50
3.24
3.24
3.24
3.25
3.25
51
3.24
3.24
3.24
3.25
3.25
52
3.24
3.24
3.24
0.04
0.04
53
3.24
3.24
3.24
0.04
0.04
54
3.25
3.25
3.25
55
0
0
0
0
0
56
0
0
0
1.59
1.59
57
3.24
3.24
3.24
0
0
58
3.24
3.24
3.24
0.04
0.04
59
3.24
3.24
3.24
0
0
60
0
0
0
3.25
3.25
61
0
0
0
MODE
MODE
EE
PB
REC
EE
PIN NO.
PIN NO.
62
3.25
3.25
3.25
36
2.9
63
3.25
3.25
3.25
37
1.25
64
0
0
0
38
0
65
0
0
0
39
1.62
66
0
0
0
40
1.62
67
1.26
1.26
1.26
41
1.26
68
3.25
3.25
3.25
42
2.35
69
3.25
3.25
3.25
43
3.24
70
0
0
0
44
0.06
71
0
0
0
45
1.7
72
1.05
1.05
1.05
46
2.26
73
3.25
3.25
3.25
47
0
74
0
0
0
48
75
0
0
0
49
76
1.47
1.47
1.47
50
0
77
1.45
1.45
1.45
51
3.24
78
3.25
3.25
3.25
52
3.05
79
3.25
3.25
3.25
53
2.24
80
0
0
0
54
1.08
IC501
55
0.96
1
3.24
3.24
3.24
56
1.12
2
0.03
0.03
0.03
57
0.96
3
0
0
0
58
3.24
4
0.37
0.37
0.37
59
0.87
5
0
0
0
60
1.12
6
1.57
1.57
1.57
61
1.12
7
1.5
1.5
1.5
62
1.14
8
3.24
3.24
3.24
63
0
9
0
0
0
64
0.02
10
0.83
0.83
0.83
65
0.02
11
3.24
3.24
3.24
66
0.02
12
0.05
0.05
0.05
67
0.03
13
1.04
1.04
1.04
68
3.24
14
0.06
0.05
0.05
69
0.03
15
0
0
0
70
0.03
16
0.05
0.05
0.05
71
0.03
17
3.24
3.24
3.24
72
0.02
18
1.02
1.02
1.02
73
3.24
19
1.04
1.04
1.04
74
0.03
20
0.06
0.06
0.06
75
3.24
21
0
0
0
76
0
22
0.06
0.06
0.06
77
2.32
23
3.24
3.24
3.24
78
0.04
24
0
0
0
79
2.33
25
3.24
3.24
3.24
80
0
26
0
0
0
81
1.56
27
3.25
3.25
3.25
82
1.13
28
1.65
1.65
1.65
83
3.24
29
0.07
0.07
0.07
84
1.34
30
3.24
3.24
3.24
85
1.42
31
3.1
3.1
3.1
86
1.08
32
3.1
3.1
3.1
87
1.28
33
3.24
3.24
3.24
88
0
34
3.24
3.24
3.24
89
1.34
35
3.25
3.25
3.25
90
1.34
3-63
3-64
MODE
PB
REC
EE
PB
REC
PIN NO.
2.9
2.9
91
1.33
1.33
1.33
1.25
1.25
92
2.69
2.69
2.69
0
0
93
3.24
3.24
3.24
1.62
1.62
94
1.68
1.68
1.68
1.62
1.62
95
2.04
2.04
2.04
1.26
1.26
96
3.23
3.23
3.23
2.35
2.35
97
0.03
0.03
0.03
3.24
3.24
98
0
0
0
0.05
0.06
99
0
0
0
1.7
1.7
100
0
0
0
2.26
2.26
IC502
0
0
1
2.5
2.49
2.49
2
0
0
0
3
0
0
0
0
0
4
1.13
1.21
1.13
3.24
3.24
5
1.14
1.18
1.14
3.05
3.05
6
1.22
1.17
1.17
2.24
2.24
7
1.01
1.11
1.01
1.08
1.08
8
1.35
1.45
1.32
0.96
0.96
9
1.18
1.2
1.17
1.12
1.12
10
2.5
2.49
2.49
0.97
0.96
11
0
0
0
3.24
3.24
12
0.98
1.01
0.98
0.87
0.87
13
1.61
1.57
1.62
1.12
1.12
14
0
0
0
1.12
1.12
15
0
0
0
1.14
1.14
16
1.07
1.19
1.06
0
0
17
1.11
1.17
1.11
0.02
0.02
18
1.08
1.14
1.08
0.02
0.02
19
2.5
2.49
2.49
0.02
0.02
20
0
0
0
0.03
0.03
21
3.02
3.03
3.03
3.24
3.24
22
3.02
3.02
3.03
0.03
0.03
23
2.5
2.49
2.49
0.03
0.03
24
2.5
2.49
2.49
0.03
0.03
25
2.5
2.49
2.49
0.02
0.02
26
1.13
1.16
1.12
3.24
3.24
27
0.98
1.07
0.98
0.03
0.03
28
1.19
1.24
1.18
3.24
3.24
29
0.98
1.07
0.98
0
0
30
2.23
2.17
2.24
2.32
2.32
31
2.9
2.89
2.89
0.04
0.04
32
1.62
1.61
1.61
2.33
2.33
33
3.18
3.18
3.18
0
0
34
1.23
1.23
1.23
1.56
1.56
35
1.26
1.26
1.26
1.13
1.13
36
1.21
1.21
1.21
3.24
3.24
37
0.16
0.16
0.16
1.34
1.34
38
0.16
0.17
0.16
1.42
1.42
39
0.15
0.15
0.15
1.08
1.08
40
0
0
0
1.28
1.28
41
2.5
2.49
2.49
0
0
42
0.33
0.33
0.33
1.34
1.34
43
0.31
0.31
0.31
1.34
1.34
44
0.31
0.31
0.31
MODE
EE
PB
REC
PIN NO.
45
1.25
1.24
0.24
46
1.26
1.26
1.26
47
1.26
1.26
1.26
48
0
0
0
49
2.51
2.5
2.5
50
2.51
2.5
2.5
51
0
0
0
52
0
0
0
53
1.13
1.21
1.13
54
1.16
1.18
1.15
55
1.18
1.16
1.16
56
2.5
2.49
2.49
57
0
0
0
58
1.11
1.11
0.95
59
1.36
1.44
1.34
60
1.16
1.2
1.16
61
0.98
1.01
0.98
62
1.61
1.57
1.61
63
1.62
1.61
1.61
64
0
0
0
IC900
1
3.22
3.22
3.22
2
0.27
0.27
0.27
3
2.36
2.36
2.36
4
2.35
2.35
2.35
5
2.36
2.36
2.36
6
0
0
0
7
2.36
2.36
2.36
8
2.36
2.36
2.36
9
2.37
2.37
2.37
10
2.37
2.37
2.37
11
2.36
2.36
2.36
12
2.36
2.36
2.36
13
2.36
2.36
2.36
14
0
0
0
15
2.36
2.36
2.36
16
2.36
2.36
2.36
17
2.37
2.37
2.37
18
2.37
2.37
2.37
19
2.37
2.37
2.37
20
0.01
0.01
0.01
21
0
0
0
22
0.01
0.01
0.01
23
0.01
0.01
0.01
24
3.22
3.22
3.22
25
3.22
3.22
3.22
26
3.22
3.22
3.22
27
3.22
3.22
3.22
28
3.22
3.22
3.22
29
3.22
3.22
3.22
30
0
0
0
31
3.15
3.15
3.15
32
3.22
3.22
3.22
33
2.41
2.41
2.41
34
2.39
2.39
2.39
Table of
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Chapters
Section 1 Summary
3
Section 2 Cabinet & Main Chassis
9
Section 3 Electrical
13
Table of Contents
Troubleshooting
SECTION
14
RL-01A LOADER PART
59
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