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RH1757
Service manual
Circuit Voltage Chart - LG RH1757 Service Manual
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:
Service manual
(109 pages)
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Contents
Table of Contents
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Table of Contents
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• CIRCUIT VOLTAGE CHART
MODE
MODE
EE
PB
REC
EE
PIN NO.
PIN NO.
IC101 LSI DMN8653
C3
1.32
A1
1.17
1.19
1.17
C4
1.28
A2
0.00
0.00
0.00
C5
0.00
A3
1.37
1.36
1.36
C6
1.19
A4
0.00
0.00
0.00
C7
1.10
A5
1.61
1.64
1.64
C8
2.86
A6
1.60
1.62
1.62
C9
1.18
A7
1.58
1.61
1.59
C10
1.10
A8
3.20
3.23
3.21
C11
1.19
A9
1.25
0.67
1.25
C12
1.02
A10
1.58
1.62
1.60
C13
1.62
A11
1.25
0.67
1.25
C14
0.00
A12
1.08
0.94
1.06
C15
1.62
A13
1.10
1.08
1.10
C16
1.21
A14
NC
NC
NC
C17
0.00
A15
3.22
3.23
3.20
C18
1.62
A16
1.63
1.64
1.62
C19
0.00
A17
1.63
1.64
1.98
C20
3.15
A18
1.63
1.64
1.63
C21
1.08
A19
0.00
0.00
0.00
C22
1.08
A20
3.24
3.24
3.23
C23
2.35
A21
0.00
0.00
0.00
C24
3.21
A22
0.00
0.00
0.00
C25
1.14
A23
0.00
0.00
0.00
C26
1.17
A24
3.23
3.24
3.22
D1
2.25
A25
2.31
2.32
2.30
D2
1.55
A26
3.21
3.21
3.21
D3
1.50
B1
3.21
3.22
3.21
D4
1.62
B2
0.27
0.27
0.27
D5
1.25
B3
1.39
1.39
1.39
D6
1.18
B4
1.22
1.22
1.21
D7
1.80
B5
0.00
0.00
0.00
D8
2.49
B6
1.16
1.21
1.18
D9
1.08
B7
1.01
1.07
1.01
D10
1.81
B8
3.20
3.20
3.19
D11
1.08
B9
1.18
1.22
1.18
D12
1.08
B10
1.02
1.07
1.02
D13
3.22
B11
1.19
1.22
1.18
D14
3.22
B12
1.22
1.25
1.24
D15
3.22
B13
2.17
2.14
2.17
D16
3.22
B14
1.60
1.61
1.59
D17
0.00
B15
1.61
1.62
1.60
D18
1.61
B16
1.62
1.62
1.61
D19
4.91
B17
0.00
0.00
0.00
D20
3.05
B18
0.00
0.00
0.00
D21
1.08
B19
4.91
4.91
4.91
D22
1.19
B20
3.12
3.14
3.14
D23
2.35
B21
2.75
2.80
2.84
D24
1.12
B22
4.80
4.90
4.82
D25
1.14
B23
3.08
3.11
3.10
D26
1.14
B24
3.21
3.21
3.21
E1
0.89
B25
3.20
3.23
3.21
E2
2.23
B26
3.21
3.23
3.21
E3
2.25
C1
2.24
2.25
2.25
E4
0.00
C2
2.67
2.67
2.66
E23
0.00
MODE
PB
REC
EE
PB
REC
PIN NO.
1.32
1.32
E24
2.01
1.97
1.97
1.28
1.27
E25
1.21
1.18
1.18
0.00
0.00
E26
1.18
1.18
1.16
0.38
1.17
F1
0.00
0.00
0.00
1.08
1.10
F2
0.00
0.00
0.00
2.86
2.85
F3
0.00
0.00
0.00
0.38
1.18
F4
1.05
1.05
1.06
1.08
1.10
F23
1.19
1.16
1.15
0.38
1.17
F24
1.18
1.06
1.02
1.07
1.01
F25
2.03
1.98
1.98
1.63
1.61
F26
2.08
1.93
1.85
0.00
0.00
G1
1.48
1.49
1.49
1.63
1.61
G2
0.00
0.00
0.00
1.21
1.20
G3
1.05
1.05
1.06
0.00
0.00
G4
2.35
2.26
2.30
1.64
1.61
G23
1.17
1.16
1.15
0.00
0.00
G24
1.18
1.16
1.15
3.18
3.16
G25
1.17
1.16
1.15
1.05
1.05
G26
1.16
1.16
1.15
1.05
1.05
H1
1.69
1.72
1.73
2.29
2.30
H2
0.00
0.00
0.00
3.23
3.21
H3
3.23
3.24
3.22
1.10
1.10
H4
1.06
1.05
1.06
1.16
1.15
H23
2.10
2.05
2.05
2.25
2.25
H24
1.14
1.09
1.06
1.55
1.55
H25
1.12
1.08
1.05
1.50
1.49
H26
1.17
1.14
1.15
1.62
1.61
J1
0.00
0.00
0.00
0.66
1.25
J2
1.58
1.58
1.58
0.94
1.06
J3
1.58
1.58
1.58
1.77
1.80
J4
3.23
3.23
3.22
2.49
2.48
J23
1.18
1.18
1.18
0.94
1.07
J24
1.11
1.11
1.11
1.78
1.81
J25
1.11
1.11
1.11
1.05
1.05
J26
1.11
1.11
1.11
1.05
1.05
K1
0.63
0.61
0.64
3.24
3.22
K2
0.64
0.62
0.64
3.24
3.22
K3
3.21
3.22
3.20
3.24
3.22
K4
1.08
1.05
1.05
3.24
3.22
K23
1.11
1.11
1.11
0.00
0.00
K24
1.13
1.13
1.13
1.61
1.60
K25
1.12
1.12
1.12
4.91
4.91
K26
1.11
1.11
1.11
3.05
3.04
L1
0.72
0.72
0.72
1.05
1.05
L2
0.73
0.73
0.64
1.17
1.17
L3
3.21
3.22
3.20
2.29
2.30
L4
1.08
1.05
1.05
1.08
1.04
L11
0.00
0.00
0.00
1.09
1.03
L12
0.00
0.00
0.00
1.09
1.08
L13
0.00
0.00
0.00
0.40
0.85
L14
0.00
0.00
0.00
2.24
2.24
L15
0.00
0.00
0.00
2.26
2.25
L16
0.00
0.00
0.00
0.00
0.00
L23
2.35
2.29
2.30
0.00
0.00
L24
2.35
2.29
2.30
MODE
MODE
EE
PB
REC
EE
PIN NO.
PIN NO.
L25
0.35
0.32
0.30
R24
2.35
L26
1.16
1.16
1.15
R25
1.18
M1
0.72
0.72
0.73
R26
1.18
M2
0.64
0.62
0.73
T1
0.00
M3
3.21
3.22
3.20
T2
0.00
M4
3.22
3.24
3.22
T3
0.00
M11
0.00
0.00
0.00
T4
0.00
M12
0.00
0.00
0.00
T11
0.00
M13
0.00
0.00
0.00
T12
0.00
M14
0.00
0.00
0.00
T13
0.00
M15
0.00
0.00
0.00
T14
0.00
M16
0.00
0.00
0.00
T15
0.00
M23
1.22
1.20
1.20
T16
0.00
M24
2.35
2.29
2.30
T23
2.35
M25
0.35
0.32
0.30
T24
2.35
M26
1.16
1.16
1.15
T25
1.18
N1
0.00
0.00
0.00
T26
1.18
N2
0.00
0.00
0.00
U1
0.00
N3
0.00
0.00
0.00
U2
NC
N4
3.22
3.24
3.22
U3
0.00
N11
0.00
0.00
0.00
U4
0.00
N12
0.00
0.00
0.00
U23
1.18
N13
0.00
0.00
0.00
U24
1.18
N14
0.00
0.00
0.00
U25
1.18
N15
0.00
0.00
0.00
U26
1.18
N16
0.00
0.00
0.00
V1
NC
N23
1.20
1.17
1.16
V2
NC
N24
2.35
2.29
2.30
V3
NC
N25
1.13
1.13
1.13
V4
NC
N26
1.13
1.13
1.13
V23
1.18
P1
1.18
1.18
1.18
V24
1.18
P2
3.22
3.23
3.22
V25
1.18
P3
NC
NC
NC
V26
1.18
P4
3.22
3.24
3.22
W1
0.00
P11
0.00
0.00
0.00
W2
NC
P12
0.00
0.00
0.00
W3
NC
P13
0.00
0.00
0.00
W4
0.00
P14
0.00
0.00
0.00
W23
1.18
P15
0.00
0.00
0.00
W24
1.18
P16
0.00
0.00
0.00
W25
0.35
P23
1.21
1.19
1.19
W26
1.16
P24
2.35
2.29
2.30
Y1
1.65
P25
1.13
1.13
1.13
Y2
0.76
P26
1.14
1.14
1.14
Y3
0.00
R1
0.00
0.00
0.00
Y4
0.77
R2
0.00
0.00
0.00
Y23
1.18
R3
0.00
0.00
0.00
Y24
1.18
R4
3.22
3.24
3.22
Y25
0.35
R11
0.00
0.00
0.00
Y26
1.16
R12
0.00
0.00
0.00
AA1
0.77
R13
0.00
0.00
0.00
AA2
0.77
R14
0.00
0.00
0.00
AA3
0.77
R15
0.00
0.00
0.00
AA4
0.76
R16
0.00
0.00
0.00
AA23
3.12
R23
1.20
1.17
1.17
AA24
1.18
3-65
3-66
MODE
PB
REC
EE
PB
REC
PIN NO.
2.29
2.30
AA25
1.18
1.18
1.18
1.18
1.18
AA26
1.18
1.18
1.18
1.18
1.18
AB1
0.77
0.77
0.87
0.00
0.00
AB2
0.76
0.75
0.84
0.00
0.00
AB3
0.77
0.75
0.87
0.00
0.00
AB4
0.77
0.76
0.84
0.00
0.00
AB23
0.00
0.00
0.00
0.00
0.00
AB24
0.00
0.00
0.00
0.00
0.00
AB25
3.21
3.23
3.21
0.00
0.00
AB26
1.18
1.18
1.12
0.00
0.00
AC1
0.78
0.78
0.89
0.00
0.00
AC2
0.77
0.76
0.89
0.00
0.00
AC3
0.77
0.77
0.84
2.29
2.30
AC4
0.76
0.76
0.84
2.29
2.30
AC5
0.00
0.00
0.00
1.18
1.18
AC6
1.95
1.92
1.93
1.18
1.18
AC7
1.94
1.90
1.91
0.00
0.00
AC8
1.91
1.88
1.90
NC
NC
AC9
1.94
1.91
1.92
0.00
0.00
AC10
0.00
0.00
0.00
0.00
0.00
AC11
1.08
1.05
1.05
1.18
1.18
AC12
1.08
1.05
1.05
1.18
1.18
AC13
1.08
1.05
1.05
1.18
1.18
AC14
3.22
3.24
3.22
1.18
1.18
AC15
3.22
3.24
3.22
NC
NC
AC16
3.22
3.24
3.22
NC
NC
AC17
0.00
0.00
0.00
NC
NC
AC18
3.22
3.24
3.21
NC
NC
AC19
0.00
0.00
0.00
1.18
1.18
AC20
0.00
0.00
0.00
1.18
1.18
AC21
3.82
3.82
3.81
1.18
1.18
AC22
2.87
2.86
2.86
1.18
1.18
AC23
0.00
0.00
0.00
0.00
0.00
AC24
0.00
0.00
0.00
NC
NC
AC25
3.21
3.23
3.21
NC
NC
AC26
3.23
3.24
3.22
0.00
0.00
AD1
0.76
0.74
0.87
1.18
1.18
AD2
3.23
3.24
3.22
1.18
1.18
AD3
3.23
3.05
3.22
0.32
0.30
AD4
0.00
0.00
0.00
1.16
1.15
AD5
0.00
0.00
0.00
1.65
1.64
AD6
1.95
1.92
1.93
0.74
0.84
AD7
0.00
0.00
0.00
0.00
0.00
AD8
1.93
1.90
1.91
0.75
0.86
AD9
1.93
1.90
1.91
1.18
1.18
AD10
3.22
3.23
3.21
1.18
1.18
AD11
3.22
3.24
3.21
0.32
0.30
AD12
0.00
0.00
0.00
1.16
1.15
AD13
0.07
0.07
0.07
0.77
0.88
AD14
0.00
0.00
0.00
0.76
0.84
AD15
0.00
0.00
0.00
0.77
0.84
AD16
0.03
0.03
0.03
0.74
0.85
AD17
3.23
3.24
3.22
3.13
3.11
AD18
3.22
3.24
3.21
1.18
1.10
AD19
0.00
0.00
0.00
MODE
EE
PB
REC
PIN NO.
AD20
0.00
0.00
0.00
AD21
0.00
0.00
0.00
AD22
3.23
3.24
3.22
AD23
0.00
0.00
0.00
AD24
0.00
0.00
0.00
AD25
0.00
0.00
0.00
AD26
0.00
0.00
0.00
AE1
3.23
3.24
3.22
AE2
3.23
3.24
3.22
AE3
3.23
3.24
3.22
AE4
0.00
0.00
0.00
AE5
1.94
1.91
1.92
AE6
1.92
1.87
1.89
AE7
1.92
1.89
1.91
AE8
1.95
1.92
1.93
AE9
0.00
0.00
0.00
AE10
3.21
3.22
3.21
AE11
4.50
4.50
4.50
AE12
3.23
3.24
3.22
AE13
0.00
0.00
0.00
AE14
0.00
0.00
0.00
AE15
0.00
0.00
0.00
AE16
0.00
0.00
0.00
AE17
3.23
3.24
3.22
AE18
3.22
3.24
3.21
AE19
0.00
0.00
0.00
AE20
0.00
0.00
0.00
AE21
3.23
3.24
3.22
AE22
3.20
3.23
3.21
AE23
0.00
0.00
0.00
AE24
2.87
2.86
2.86
AE25
0.00
0.00
0.00
AE26
0.00
0.00
0.00
AF1
3.22
3.23
3.21
AF2
0.00
0.00
0.00
AF3
0.00
0.00
0.00
AF4
4.60
4.60
4.61
AF5
1.96
1.92
1.94
AF6
1.93
1.89
1.91
AF7
1.95
1.92
1.93
AF8
1.93
1.90
1.91
AF9
0.00
0.00
0.00
AF10
3.23
3.23
3.21
AF11
3.23
3.23
3.21
AF12
0.00
0.00
0.00
AF13
0.00
0.00
0.00
AF14
0.00
0.00
0.00
AF15
1.64
1.66
1.66
AF16
3.21
3.23
3.23
AF17
3.22
3.24
3.21
AF18
0.00
0.00
0.00
AF19
0.00
0.00
0.00
AF20
3.21
3.23
3.21
AF21
3.23
3.24
3.22
AF22
3.23
3.24
3.22
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Chapters
Section 1 Summary
3
Section 2 Cabinet & Main Chassis
9
Section 3 Electrical
13
Section 4 Rs-01A Loader Part
62
Table of Contents
Troubleshooting
HDR PART
14
ELECTRICAL TROUBLESHOOTING GUIDE
63
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