Read LG 32LK457C (CHASSIS:LB0EC) Service Manual online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
1K
R1614
5.6V
OPT
D1611
SC1_CVBS_IN
SC1_G+/COMP1_Y+
0
COMPONENT1
R4223
0 . 1 u F
50V
EU_OPT
C1625
30V
D1612
470K
OPT
R1662
5.6V
REAR_AV
D1626
+3.3V_Normal
10K
EU_OPT
R1667
470K
R1625
10K
R1685
REAR_AV
0 . 1 u F
50V
50V
EU_OPT
C1642
SN324
I C 1 6 0 1 - * 1
EU_EXT_SPK_OPT_AUK
3
NON_INV_IN1
2
INV_IN1
4
VCC
1
OUT1
6
INV_IN2
5
NON_INV_IN2
7
OUT2
8
OUT3
9
INV_IN3
10
NON_INV_IN3
11
GND
12
NON_INV_IN4
13
INV_IN4
14
OUT4
47K
EU_OPT
R1641
0 . 1 u F
16V
16V
C1607
1000pF
50V
50V
C1616
OPT
5.6V
D1624
OPT
ISA1530AC1
EU_OPT
Q1601
E
B
C
2SC3052
EU_OPT
Q1607
P P J 2 3 3 - 0 1
JK1604
REAR_AV
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]C-LUG
5C
[RD]E-LUG
4C
[RD]O-SPRING
3C
[RD]CONTACT
5.6V
NON_EU
D1607
75
R1620
1K
R1666
REAR_AV
DTV/MNT_L_OUT
10K
R1660
REAR_AV
10K
R1652
EU_OPT
120-ohm
L1609
REAR_AV
0 . 1 u F
16V
16V
C1646
REAR_AV
10K
R1618
75
EU_OPT
R1609
470
EU_OPT
R1640
10K
R1617
30V
REAR_AV
D1619
30V
D1604
COMP2_DET
330pF
50V
C1612
120-ohm
L1604
330pF
50V
50V
C1611
SC1/COMP1_L_IN
SC1_FB
SC1_ID
10K
R1632
PSC008-01
EU_OPT
JK1602
1
AUDIO_R_OUT
2
AUDIO_R_IN
3
AUDIO_L_OUT
4
AUDIO_GND
5
B_GND
6
AUDIO_L_IN
7
B_OUT
8
ID
9
G_GND
10
D2B_IN
11
G_OUT
12
D2B_OUT
13
R_GND
14
RGB_GND
15
R_OUT
16
RGB_IO
17
SYNC_GND1
18
SYNC_GND2
19
SYNC_OUT
20
SYNC_IN
21
COM_GND
22
AV_DET
330pF
50V
C1663
REAR_AV
47uF
16V
16V
EU_OPT
C1621
DTV/MNT_VOUT
5.6V
D1613
OPT
33K
EU_OPT
R1664
5.6V
OPT
OPT
D1601
AS324MTR-E1
EU_EXT_SPK_OPT_BCD
IC1601
3
IN1+
2
I N 1 -
4
VCC
1
OUT1
6
I N 2 -
5
IN2+
7
OUT2
8
OUT3
9
I N 3 -
10
IN3+
11
GND
12
IN4+
13
I N 4 -
14
OUT4
2SC3052
EU_OPT
Q1602
E
B
C
5.6V
REAR_AV
D1625
BLM18PG121SN1D
EU_OPT
L1601
DTV/MNT_L_OUT
SC1/COMP1_R_IN
5.6V
NON_EU
D1609
75
R1621
470K
R1626
75
R1604
4700pF
EU_OPT
C1618
10K
R1633
220pF
50V
50V
OPT
C1648
AV_CVBS_DET
22
EU_OPT
R1627
COMP2_Pr+
12K
R1636
75
R1619
75
EU_OPT
R1616
BLM18PG121SN1D
EU_OPT
L1602
SCART1_Rout
15K
EU_OPT
R1623
10uF
16V
16V
EU_OPT
C1645
1000pF
50V
50V
C1617
OPT
SC1_B+/COMP1_Pb+
AV_R_IN
10K
EU_OPT
R1668
SC1/COMP1_DET
12K
R1634
SC1_R+/COMP1_Pr+
30V
D1605
0 . 1 u F
EU_OPT
C1636
75
R1605
COMP2_Y+
5.6V
OPT
OPT
D1608
10K
R1612
5.6V
D1616
390
EU_OPT
R1635
DTV/MNT_R_OUT
10K
R1613
DTV/MNT_R_OUT
390
R4211
EU_OPT
330pF
50V
50V
C1662
REAR_AV
12K
R1689
REAR_AV
1000pF
50V
50V
EU_OPT
C1610
30V
OPT
D1618
SC1_SOG_IN
EU_OPT
L1606
10uF
16V
16V
EU_OPT
C1644
DTV/MNT_L_OUT
0
EU_OPT
R4221
2K
EU_OPT
R1648
+3.3V_Normal
2SC3052
EU_OPT
Q1608
AV_L_IN
30V
D1606
12K
R1631
RT1P141C-T112
EU_OPT
Q1610
1
2
3
75
EU_OPT
R1628
30V
OPT
D1610
5.6V
D1617
P P J - 2 3 0 - 0 1
COMPONENT1
JK1601
9
[GN]G
10
[GN]GND
8
[GN]C_DET
7
[BL]B
6
[RD]R
5
[WH]L_IN
4
[RD]R_IN
11
FIX-TER
13
[RD]MONO
180
EU_OPT
R1639
470K
R1606
+3.5V_ST
220pF
50V
50V
OPT
C1608
120-ohm
L1603
COMP2_L_IN
COMP2_R_IN
470K
R1607
+12V/+15V
+12V/+15V
120-ohm
L1610
REAR_AV
0 . 1 u F
50V
EU_OPT
C1623
AV_CVBS_IN
30V
OPT
D1603
SCART1_Lout
33K
EU_OPT
R1665
3.9K
EU_OPT
R1629
COMP2_Pb+
12K
R1630
100uF
16V
16V
EU_OPT
C1620
30V
OPT
D1602
470K
R1672
REAR_AV
2.2K
EU_OPT
R1656
15K
EU_OPT
R1642
30V
D1615
P P J 2 3 4 - 0 1
JK1603
REAR_COMP2
5A
[GN]O-SPRING
6A
[GN]E-LUG
4A
[GN]CONTACT
7B
[BL]E-LUG-S
5B
[BL]O-SPRING
7C
[RD]E-LUG-S
5C
[RD]O-SPRING_1
5D
[WH]O-SPRING
4E
[RD]CONTACT
5E
[RD]O-SPRING_2
6E
[RD]E-LUG
12K
R1688
REAR_AV
4700pF
EU_OPT
C1619
2.2K
EU_OPT
R1655
1K
R1615
5.6K
EU_OPT
R1657
470K
OPT
R1661
5.6K
EU_OPT
R1658
SCART1_MUTE
10K
R1684
REAR_AV
75
R1608
47pF
50V
50V
EU_OPT
C1604
33pF
EU_OPT
C1654
470K
R1671
REAR_AV
DTV/MNT_R_OUT
33pF
EU_OPT
C1655
47pF
50V
50V
C1643
REAR_AV
75
R1654
REAR_AV
1000pF
50V
50V
EU_OPT
C1609
0
EU_OPT
R4210
30V
D1614
2K
EU_OPT
R1650
0
R4216
0
R4219
330pF
C1664
330pF
C1665
220K
R4218
220K
R4217
2.2K
EXT_SPK
R16
22K
R21
EXT_SPK
EXT_L_AMP
100
R22
EXT_SPK
10K
EXT_SPK
R11
470K
EXT_SPK
R15
1uF
50V
EXT_SPK
C12
1uF
50V
EXT_SPK
C13
470K
EXT_SPK
R14
33pF
EXT_SPK
C11
33K
EXT_SPK
R13
33pF
EXT_SPK
C10
5.6K
EXT_SPK
R19
10K
EXT_SPK
R12
EXT_L_AMP_IN
100
R23
EXT_SPK
0 . 0 1 u F
C15
EXT_SPK
33K
EXT_SPK
R10
5.6K
EXT_SPK
R18
EXT_R_AMP
0 . 0 1 u F
C14
EXT_SPK
22K
R20
EXT_SPK
EXT_R_AMP_IN
2.2K
EXT_SPK
R17
REAR_JACK
20110324
17
GP3_S7LR
[SCART AUDIO MUTE]
Gain=1+Rf/Rg
F u l l S c a r t / C o m p 1
Rg
IN CASE OF SMALL= 15V
Rear AV
CLOSE TO MSTAR
Rf
L-MONO
COMPONENT2
CLOSE TO MSTAR
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