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LG Manuals
DVD Recorder
RH7521W
Service manual
Circuit Voltage Chart - LG RH7521W Service Manual
Hdd/dvd recorder
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• CIRCUIT VOLTAGE CHART
MODE
MODE
MODE
MODE
EE
EE
EE
PIN NO.
PIN NO.
PIN NO.
PIN NO.
IC101
C1
1.29
E2
0.23
L3
A1
1.66
C2
0.00
E3
0.23
L4
A2
-
C3
0.00
E4
3.35
L11
A3
0.55
C4
0.00
E23
1.68
L12
A4
0.55
C5
0.00
E24
0.00
L13
A5
0.67
C6
3.33
E25
1.68
L14
A6
0.54
C7
0.00
E26
0.00
L15
A7
0.66
C8
3.31
L16
A8
0.67
C9
0.00
F1
0.23
L23
A9
2.67
C10
2.57
F2
0.23
L24
A10
1.18
C11
1.55
F3
0.23
L25
A11
1.32
C12
0.84
F4
3.35
L26
A12
1.82
C13
1.24
F23
1.83
A13
1.11
C14
1.28
F24
1.69
M1
A14
0.83
C15
2.20
F25
-
M2
A15
1.08
C16
0.00
F26
-
M3
A16
1.70
C17
1.20
M4
A17
1.56
C18
0.82
G1
0.00
M11
A18
0.00
C19
1.43
G2
0.00
M12
A19
1.07
C20
3.34
G3
0.00
M13
A20
0.00
C21
0.00
G4
0.00
M14
A21
3.28
C22
2.50
G23
-
M15
A22
1.41
C23
0.00
G24
1.68
M16
A23
1.70
C24
1.24
G25
-
M23
A24
1.72
C25
1.40
G26
1.14
M24
A25
1.73
C26
1.67
M25
A26
1.60
H1
1.71
M26
D1
3.34
H2
0.00
B1
3.34
D2
3.34
H3
N1
B2
0.00
D3
3.34
H4
0.00
N2
B3
0.00
D4
3.34
H23
1.13
N3
B4
0.79
D5
3.34
H24
1.12
N4
B5
0.79
D6
3.33
H25
1.11
N11
B6
0.00
D7
1.83
H26
1.23
N12
B7
2.32
D8
2.67
N13
B8
2.66
D9
?
J1
N14
B9
2.95
D10
3.34
J2
N15
B10
1.12
D11
1.83
J3
N16
B11
1.11
D12
1.83
J4
N23
B12
1.08
D13
1.83
J23
1.10
N24
B13
1.21
D14
3.35
J24
1.21
N25
B14
1.15
D15
3.35
J25
1.07
N26
B15
3.35
D16
1.23
J26
1.17
B16
0.00
D17
1.29
P1
B17
1.11
D18
1.82
K1
P2
B18
1.52
D19
3.35
K2
P3
B19
1.60
D20
3.35
K3
P4
B20
3.34
D21
5.02
K4
1.83
P11
B21
1.68
D22
1.24
K23
P12
B22
1.44
D23
2.50
K24
1.16
P13
B23
1.61
D24
1.69
K25
1.13
P14
B24
-
D25
-
K26
1.10
P15
B25
2.35
D26
1.27
P16
B26
1.05
L1
P23
E1
0.23
L2
P24
MODE
MODE
MODE
EE
EE
EE
EE
PIN NO.
PIN NO.
PIN NO.
P25
W23
AC24
P26
W24
1.12
AC25
0.00
W25
1.22
AC26
0.00
R1
W26
0.00
R2
AD1
0.00
R3
Y1
AD2
0.00
R4
3.35
Y2
AD3
0.00
R11
0.00
Y3
AD4
1.14
R12
0.00
Y4
AD5
1.21
R13
0.00
Y23
-
AD6
3.35
1.14
R14
0.00
Y24
AD7
1.16
R15
0.00
Y25
1.16
AD8
0.00
R16
0.00
Y26
1.17
AD9
3.30
R23
1.34
AD10
3.34
2.20
R24
2.50
AA1
AD11
R25
AA2
AD12
0.00
R26
AA3
AD13
0.00
AA4
1.83
AD14
0.00
T1
AA23
1.83
AD15
0.00
T2
AA24
AD16
0.00
T3
AA25
AD17
0.00
T4
3.35
AA26
AD18
0.00
T11
0.00
AD19
2.50
T12
0.00
AB1
AD20
1.17
T13
0.00
AB2
AD21
1.13
T14
0.00
AB3
AD22
T15
0.00
AB4
AD23
T16
0.00
AB23
AD24
T23
1.30
AB24
1.22
AD25
1.23
T24
2.50
AB25
AD26
1.22
T25
1.14
AB26
1.83
T26
1.12
AE1
0.00
AC1
AE2
0.00
U1
AC2
AE3
0.00
U2
AC3
AE4
0.00
U3
AC4
AE5
0.00
U4
AC5
AE6
0.00
U23
2.50
AC6
1.83
AE7
0.00
1.34
U24
0.25
AC7
D21
AE8
2.50
U25
1.13
AC8
AE9
U26
1.16
AC9
AE10
3.34
AC10
3.87
AE11
V1
AC11
AE12
V2
AC12
3.35
AE13
V3
AC13
3.35
AE14
V4
AC14
3.35
AE15
3.35
V23
1.13
AC15
3.35
AE16
0.00
V24
AC16
AE17
0.00
V25
AC17
AE18
0.00
V26
AC18
AE19
0.00
AC19
AE20
0.00
W1
AC20
2.27
AE21
0.00
W2
AC21
1.83
AE22
1.31
W3
AC22
AE23
2.50
W4
AC23
AE24
3-78
MODE
MODE
EE
EE
PB
REC
PIN NO.
PIN NO.
AE25
IC202
AE26
1
2.51
2.49
2.48
2
1.13
1.11
1.15
AF1
3
2.50
2.49
2.48
AF2
4
1.13
1.13
1.14
AF3
5
1.16
1.14
1.18
AF4
6
0.00
0.00
0.00
AF5
7
1.18
1.15
1.26
AF6
8
1.14
1.15
1.14
AF7
9
2.50
2.49
2.49
AF8
10
1.12
1.08
1.01
AF9
11
1.14
1.14
1.12
AF10
12
0.00
0.00
0.00
AF11
13
1.16
1.06
1.17
AF12
14
0.00
0.00
0.00
AF13
15
2.50
2.49
2.48
AF14
16
1.22
1.21
1.21
AF15
17
0.00
0.00
0.00
AF16
18
2.50
2.49
2.49
AF17
19
0.00
0.00
0.00
AF18
20
0.54
0.54
0.52
AF19
21
1.27
1.27
1.33
AF20
22
1.22
1.20
1.14
AF21
23
1.26
1.28
1.33
AF22
24
1.80
1.75
1.62
AF23
25
0.00
0.00
0.00
AF24
26
1.24
1.23
1.23
AF25
27
1.25
1.25
1.24
AF26
28
1.17
1.14
1.09
29
1.16
1.13
1.09
30
1.17
1.14
1.13
31
1.19
1.17
1.15
32
1.22
1.21
1.21
33
2.50
2.49
2.48
34
0.00
0.00
0.00
35
1.22
1.21
1.21
36
1.23
1.22
1.22
37
1.22
1.22
1.22
38
1.22
1.21
1.22
39
1.23
1.22
1.22
40
1.16
1.14
1.08
41
1.16
1.14
1.08
42
1.17
1.14
1.08
43
0.00
0.00
0.00
44
1.99
1.99
1.98
45
1.27
1.26
1.26
46
1.26
1.26
1.25
47
0.53
0.53
0.52
48
0.00
0.00
0.00
49
1.25
1.24
1.24
50
0.00
0.00
0.00
51
1.21
1.21
1.20
52
0.00
0.00
0.00
53
0.00
0.00
0.00
54
1.14
1.12
1.15
3-79
MODE
MODE
EE
PB
REC
EE
PB
PIN NO.
PIN NO.
55
2.49
2.49
2.48
43
0.00
0.00
56
1.14
1.11
1.15
44
1.99
1.99
57
1.14
1.11
1.18
45
1.26
1.26
58
0.00
0.00
0.00
46
1.26
1.26
59
1.15
1.11
1.22
47
0.53
0.53
60
1.15
1.14
1.13
48
0.00
0.00
61
2.49
2.49
2.48
49
1.25
1.24
62
1.15
1.20
1.05
50
0.00
0.00
63
1.15
1.15
1.12
51
1.21
1.19
64
0.00
0.00
0.00
52
0.00
0.00
65
1.14
1.05
1.17
53
0.00
0.00
66
0.00
0.00
0.00
54
1.13
1.10
IC203
55
2.49
2.49
1
2.49
2.49
2.48
56
1.14
1.10
2
1.15
1.11
1.15
57
1.12
1.07
3
2.49
2.49
2.48
58
0.00
0.00
4
1.14
1.14
1.15
59
1.14
1.08
5
1.16
1.15
1.22
60
1.19
1.19
6
0.00
0.00
0.00
61
2.49
2.49
7
1.17
1.11
1.21
62
1.09
1.04
8
1.14
1.14
1.14
63
1.12
1.10
9
2.49
2.49
2.48
64
0.00
0.00
10
1.12
1.11
1.06
65
1.16
1.09
11
1.13
1.12
1.14
66
0.00
0.00
12
0.00
0.00
0.00
IC205
13
1.15
1.10
1.17
1
2.49
2.49
14
0.00
0.00
0.00
2
2.49
2.49
15
2.49
2.49
2.48
3
2.49
2.49
16
1.21
1.20
1.19
4
1.24
1.23
17
0.00
0.00
0.00
5
0.00
0.00
18
2.49
2.49
2.48
6
0.00
0.00
19
0.00
0.00
0.00
7
1.24
1.23
20
0.54
0.54
0.52
8
1.25
1.24
21
1.26
1.27
1.33
IC206
22
1.22
1.21
1.15
1
0.00
0.00
23
1.26
1.28
1.33
2
0.00
0.00
24
1.80
1.75
1.64
3
0.04
0.04
25
0.00
0.00
0.00
4
0.04
0.04
26
1.23
1.23
1.24
5
0.04
0.04
27
1.24
1.25
1.24
6
0.04
0.04
28
1.17
1.14
1.08
7
0.04
0.04
29
1.16
1.13
1.08
8
0.04
0.04
30
1.17
1.14
1.13
9
0.04
0.04
31
1.19
1.17
1.15
10
0.04
0.04
32
1.22
1.21
1.21
11
3.35
3.35
33
2.49
2.49
2.48
12
0.04
0.04
34
0.00
0.00
0.00
13
3.35
3.35
35
1.22
1.22
1.21
14
3.35
3.35
36
1.23
1.22
1.21
15
0.00
0.00
37
1.22
1.22
1.22
16
3.35
3.35
38
1.22
1.21
1.22
17
0.02
0.04
39
1.23
1.22
1.22
18
0.04
0.04
40
1.16
1.14
1.08
19
3.35
3.35
41
1.17
1.15
1.08
20
0.04
0.04
42
1.17
1.14
1.09
21
0.04
0.04
REC
0.00
1.99
1.27
1.26
0.52
0.00
1.24
0.00
1.19
0.00
0.00
1.15
2.48
1.15
1.17
0.00
1.22
1.17
2.48
1.01
1.11
0.00
1.18
0.00
2.48
2.48
2.48
1.23
0.00
0.00
1.23
1.24
0.00
0.00
0.78
0.04
0.04
0.04
0.04
0.04
0.04
0.04
3.35
0.04
3.35
3.35
0.00
3.35
0.04
0.04
3.35
0.04
0.04
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