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DR7400
Service manual
Circuit Voltage Chart - LG DR-7400 Service Manual
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• CIRCUIT VOLTAGE CHART
MODE
MODE
EE
PB
REC
EE
PIN NO.
PIN NO.
I C 2 0 1
IC201
71
0.00
1
2.51
2.49
2.48
72
1.18
2
1.13
1.11
1.15
73
1.14
3
2.50
2.49
2.48
74
2.50
4
1.13
1.13
1.14
75
1.12
5
1.16
1.14
1.18
76
1.14
6
0.00
0.00
0.00
77
0.00
7
1.18
1.15
1.26
78
1.16
8
1.14
1.15
1.14
79
0.00
9
2.50
2.49
2.49
80
2.50
10
1.12
1.08
1.01
81
1.22
11
1.14
1.14
1.12
82
0.00
12
0.00
0.00
0.00
83
2.50
13
1.16
1.06
1.17
84
0.00
14
0.00
0.00
0.00
85
0.54
15
2.50
2.49
2.48
86
1.27
16
1.22
1.21
1.21
87
1.22
17
0.00
0.00
0.00
88
1.26
18
2.50
2.49
2.49
89
1.80
19
0.00
0.00
0.00
90
0.00
20
0.54
0.54
0.52
91
1.24
21
1.27
1.27
1.33
92
1.25
22
1.22
1.20
1.14
93
1.17
23
1.26
1.28
1.33
94
1.16
24
1.80
1.75
1.62
95
1.17
25
0.00
0.00
0.00
96
1.19
26
1.24
1.23
1.23
97
1.22
27
1.25
1.25
1.24
98
2.50
28
1.17
1.14
1.09
99
0.00
29
1.16
1.13
1.09
100
1.22
30
1.17
1.14
1.13
101
1.23
31
1.19
1.17
1.15
102
1.22
32
1.22
1.21
1.21
103
1.22
33
2.50
2.49
2.48
104
1.23
34
0.00
0.00
0.00
105
1.16
35
1.22
1.21
1.21
106
1.16
36
1.23
1.22
1.22
107
1.17
37
1.22
1.22
1.22
108
0.00
38
1.22
1.21
1.22
109
1.99
39
1.23
1.22
1.22
110
1.27
40
1.16
1.14
1.08
111
1.26
41
1.16
1.14
1.08
112
0.53
42
1.17
1.14
1.08
113
0.00
43
0.00
0.00
0.00
114
1.25
44
1.99
1.99
1.98
115
0.00
45
1.27
1.26
1.26
116
1.21
46
1.26
1.26
1.25
117
0.00
47
0.53
0.53
0.52
118
0.00
48
0.00
0.00
0.00
119
1.14
49
1.25
1.24
1.24
120
2.49
50
2.51
2.49
2.48
121
1.14
67
1.13
1.11
1.15
122
1.14
68
2.50
2.49
2.48
123
0.00
69
1.13
1.13
1.14
124
1.15
70
1.16
1.14
1.18
125
1.15
MODE
PB
REC
EE
PB
REC
PIN NO.
0.00
0.00
126
2.49
2.49
2.48
1.15
1.26
127
1.15
1.20
1.05
1.15
1.14
128
1.15
1.15
1.12
2.49
2.49
129
0.00
0.00
0.00
1.08
1.01
130
2.51
2.49
2.48
1.14
1.12
131
1.13
1.11
1.15
0.00
0.00
132
2.50
2.49
2.48
1.06
1.17
133
1.13
1.13
1.14
0.00
0.00
134
1.16
1.14
1.18
2.49
2.48
135
0.00
0.00
0.00
1.21
1.21
136
1.18
1.15
1.26
0.00
0.00
137
1.14
1.15
1.14
2.49
2.49
138
2.50
2.49
2.49
0.00
0.00
139
1.12
1.08
1.01
0.54
0.52
140
1.14
1.14
1.12
1.27
1.33
141
0.00
0.00
0.00
1.20
1.14
142
1.16
1.06
1.17
1.28
1.33
143
0.00
0.00
0.00
1.75
1.62
144
2.50
2.49
2.48
0.00
0.00
145
1.22
1.21
1.21
1.23
1.23
146
0.00
0.00
0.00
1.25
1.24
147
2.50
2.49
2.49
1.14
1.09
148
0.00
0.00
0.00
1.13
1.09
149
0.54
0.54
0.52
1.14
1.13
150
1.27
1.27
1.33
1.17
1.15
151
1.22
1.20
1.14
1.21
1.21
152
1.26
1.28
1.33
2.49
2.48
153
1.80
1.75
1.62
0.00
0.00
154
0.00
0.00
0.00
1.21
1.21
155
1.24
1.23
1.23
1.22
1.22
156
1.25
1.25
1.24
1.22
1.22
157
1.17
1.14
1.09
1.21
1.22
158
1.16
1.13
1.09
1.22
1.22
159
1.17
1.14
1.13
1.14
1.08
160
1.19
1.17
1.15
1.14
1.08
161
1.22
1.21
1.21
1.14
1.08
162
2.50
2.49
2.48
0.00
0.00
163
0.00
0.00
0.00
1.99
1.98
164
1.22
1.21
1.21
1.26
1.26
165
1.23
1.22
1.22
1.26
1.25
166
1.22
1.22
1.22
0.53
0.52
167
1.22
1.21
1.22
0.00
0.00
168
1.23
1.22
1.22
1.24
1.24
169
1.16
1.14
1.08
0.00
0.00
170
1.16
1.14
1.08
1.21
1.20
171
1.17
1.14
1.08
0.00
0.00
172
0.00
0.00
0.00
0.00
0.00
173
1.99
1.99
1.98
1.12
1.15
174
1.27
1.26
1.26
2.49
2.48
175
1.26
1.26
1.25
1.11
1.15
176
0.53
0.53
0.52
1.11
1.18
177
0.00
0.00
0.00
0.00
0.00
178
1.25
1.24
1.24
1.11
1.22
179
0.00
0.00
0.00
1.14
1.13
180
1.21
1.21
1.20
MODE
MODE
EE
PB
REC
EE
PIN NO.
PIN NO.
181
0.00
0.00
0.00
19
0.00
182
0.00
0.00
0.00
20
0.54
183
1.14
1.12
1.15
21
1.26
184
2.49
2.49
2.48
22
1.22
185
1.14
1.11
1.15
23
1.26
186
1.14
1.11
1.18
24
1.80
187
0.00
0.00
0.00
25
0.00
188
1.15
1.11
1.22
26
1.23
189
1.15
1.14
1.13
27
1.24
190
2.49
2.49
2.48
28
1.17
191
1.15
1.20
1.05
29
1.16
192
1.15
1.15
1.12
30
1.17
193
0.00
0.00
0.00
31
1.19
194
1.14
1.05
1.17
32
1.22
195
0.00
0.00
0.00
33
2.49
196
1.14
1.12
1.15
34
0.00
197
2.49
2.49
2.48
35
1.22
198
1.14
1.11
1.15
36
1.23
199
1.14
1.11
1.18
37
1.22
200
0.00
0.00
0.00
38
1.22
201
1.15
1.11
1.22
39
1.23
202
1.15
1.14
1.13
40
1.16
203
2.49
2.49
2.48
41
1.17
204
1.15
1.20
1.05
42
1.17
205
1.15
1.15
1.12
43
0.00
206
0.00
0.00
0.00
44
1.99
207
1.26
1.28
1.33
45
1.26
208
1.80
1.75
1.62
46
1.26
209
0.00
0.00
0.00
47
0.53
210
1.24
1.23
1.23
48
0.00
211
1.25
1.25
1.24
49
1.25
212
1.17
1.14
1.09
50
0.00
IC204
213
1.16
1.13
1.09
IC204
214
1.17
1.14
1.13
1
2.49
215
1.19
1.17
1.15
2
2.49
216
1.22
1.21
1.21
3
2.49
IC203
IC203
4
1.24
1
2.49
2.49
2.48
5
0.00
2
1.15
1.11
1.15
6
0.00
3
2.49
2.49
2.48
7
1.24
4
1.14
1.14
1.15
8
2.49
5
1.16
1.15
1.22
9
2.49
6
0.00
0.00
0.00
10
2.49
7
1.17
1.11
1.21
11
1.24
8
1.14
1.14
1.14
12
0.00
9
2.49
2.49
2.48
13
0.00
10
1.12
1.11
1.06
14
1.24
11
1.13
1.12
1.14
15
1.25
12
0.00
0.00
0.00
16
2.49
13
1.15
1.10
1.17
17
1.24
14
0.00
0.00
0.00
18
0.00
15
2.49
2.49
2.48
19
0.00
16
1.21
1.20
1.19
20
1.24
IC301
17
0.00
0.00
0.00
IC301
18
2.49
2.49
2.48
1
0.00
3-32
3-33
MODE
PB
REC
EE
PB
REC
PIN NO.
0.00
0.00
2
0.04
0.04
0.04
0.54
0.52
3
0.04
0.04
0.04
1.27
1.33
4
0.00
0.00
0.00
1.21
1.15
5
0.04
0.04
0.04
1.28
1.33
6
0.04
0.04
0.04
1.75
1.64
7
3.35
3.35
3.35
0.00
0.00
8
0.04
0.04
0.04
1.23
1.24
9
0.04
0.04
0.04
1.25
1.24
10
0.00
0.00
0.00
1.14
1.08
11
0.04
0.04
0.04
1.13
1.08
12
0.04
0.04
0.04
1.14
1.13
13
0.04
0.04
0.04
1.17
1.15
14
0.04
0.04
0.04
1.21
1.21
15
0.00
0.00
0.00
2.49
2.48
16
0.04
0.04
0.04
0.00
0.00
17
3.35
3.35
3.35
1.22
1.21
18
3.35
3.35
3.35
1.22
1.21
19
3.35
3.35
3.35
1.22
1.22
20
0.04
0.04
0.04
1.21
1.22
21
0.00
0.00
0.00
1.22
1.22
22
3.35
3.35
3.35
1.14
1.08
23
0.04
0.04
0.04
1.15
1.08
24
0.00
0.00
0.00
1.14
1.09
25
0.00
0.00
0.00
0.00
0.00
26
0.00
0.00
0.00
1.99
1.99
27
2.98
3.25
3.30
1.26
1.27
28
0.00
0.00
0.00
1.26
1.26
29
0.00
0.00
0.00
0.53
0.52
30
3.29
3.25
3.11
0.00
0.00
31
3.35
3.35
3.35
1.24
1.24
32
0.00
0.00
0.00
0.00
0.00
33
0.00
0.00
0.00
34
0.00
0.00
0.00
2.49
2.48
35
0.00
0.00
0.00
2.49
2.48
36
2.99
2.98
2.99
2.49
2.48
37
0.00
0.00
0.00
1.23
1.23
38
0.00
0.00
0.00
0.00
0.00
39
0.00
0.00
0.00
0.00
0.00
40
0.00
0.00
0.00
1.23
1.23
41
0.00
0.00
0.00
2.49
2.48
42
3.35
3.35
3.35
2.49
2.48
43
0.00
0.00
0.00
2.49
2.48
44
0.00
0.00
0.00
1.23
1.23
45
0.00
0.00
0.00
0.00
0.00
46
0.00
0.00
0.00
0.00
0.00
47
0.00
0.00
0.00
1.23
1.23
48
0.00
0.00
0.00
1.24
1.24
49
0.00
0.00
0.00
2.49
2.48
50
0.04
0.04
0.04
1.23
1.23
51
0.04
0.04
0.04
0.00
0.00
52
0.00
0.00
0.00
0.00
0.00
53
0.04
0.04
0.04
1.23
1.23
54
0.04
0.04
0.04
55
3.35
3.35
3.35
0.00
0.00
56
0.04
0.04
0.04
MODE
EE
PB
REC
PIN NO.
57
0.04
0.04
0.04
58
0.00
0.00
0.00
59
0.04
0.04
0.04
60
0.04
0.04
0.04
61
0.04
0.04
0.04
62
0.04
0.04
0.04
63
0.00
0.00
0.00
64
0.04
0.04
0.04
65
3.35
3.35
3.35
66
3.35
3.35
3.35
67
3.35
3.35
3.35
68
0.04
0.04
0.04
69
0.00
0.00
0.00
70
3.35
3.35
3.35
71
0.04
0.04
0.04
72
0.00
0.00
0.00
73
0.00
0.00
0.00
74
0.00
0.00
0.00
75
2.98
3.25
3.30
76
0.00
0.00
0.00
77
0.00
0.00
0.00
78
3.29
3.25
3.11
79
3.35
3.35
3.35
80
0.00
0.00
0.00
81
0.00
0.00
0.00
82
0.00
0.00
0.00
83
0.00
0.00
0.00
84
2.99
2.98
2.99
85
0.00
0.00
0.00
86
0.04
0.04
0.04
87
0.04
0.04
0.04
88
0.00
0.00
0.00
89
0.04
0.04
0.04
90
3.35
3.35
3.35
91
3.35
3.35
3.35
92
3.35
3.35
3.35
93
0.04
0.04
0.04
94
0.00
0.00
0.00
95
3.35
3.35
3.35
96
0.04
0.04
0.04
97
0.00
0.00
0.00
98
0.00
0.00
0.00
99
0.00
0.00
0.00
100
2.98
3.25
3.30
101
0.04
0.04
0.04
102
0.04
0.04
0.04
103
0.00
0.00
0.00
104
0.04
0.04
0.04
105
0.04
0.04
0.04
106
0.04
0.04
0.04
107
0.04
0.04
0.04
108
0.00
0.00
0.00
109
0.04
0.04
0.04
110
3.35
3.35
3.35
111
3.35
3.35
3.35
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Chapters
Section 1 Summary
3
Section 2 Cabinet & Main Chassis
7
Section 3 Electrical
11
Table of Contents
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