LG 42LD455B / 42LD455H (CHASSIS:LC01W) Service Manual ▷ View 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.
+5V_USB
0
R2305
+3.3V_Normal
MLB-201209-0120P-N2
120-ohm
L2301
0
R2306
CDS3C05HDMI1
5.6V
5.6V
OPT
D2301
4.7K
OPT
R2303
MIC2009YM6-TR
IC2301
3
ENABLE
2
GND
4
FAULT/
1
VIN
6
VOUT
5
ILIMIT
10uF
10V
10V
C2302
0 . 1 u F
C2304
10uF
10V
10V
C2303
SIDE_USB_DM
SIDE_USB_DP
0
R2304
180
R2301
USB1_CTL
CDS3C05HDMI1
5.6V
OPT
D2302
USB1_OCD
47
R2302
10K
R2307
/RST_HUB
TP2301
USB DOWN STREAM
KJA-UB-4-0004
JK2301
1
2
3
4
5
USB1 OPTION
USB_MICREL
$ 0 . 1 2 5
GP2_Saturn7M
USB
V e r . 1 . 0
39
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.
12K
R1634
DTV/MNT_L_OUT
0 . 1 u F
50V
EU_OPT
C1625
COMP2_Pr+
680
OPT
R1678
AV_CVBS_DET
+3.3V_Normal
330pF
50V
C1663
470K
R1625
470
EU_OPT
R1640
30V
D1605
10K
R1684
75
EU_OPT
R1609
2SC3052
EU_OPT
Q1611
E
B
C
75
R1621
COMP2_Y+
470K
R1671
22
EU_OPT
R1627
5.6V
OPT
D1611
100uF
16V
16V
EU_OPT
C1620
0
EU_OPT
R1622
10pF
OPT
C1603
120-ohm
L1609
30V
OPT
D1618
DTV/MNT_VOUT
BLM18PG121SN1D
EU_OPT
L1601
2SC3052
EU_OPT
Q1613
E
B
C
COMP2_L_IN
SCART1_MUTE
30V
D1606
30V
OPT
D1602
5.6V
D1626
0
R1659
10pF
50V
50V
OPT
C1613
75
R1620
47pF
50V
50V
EU_OPT
C1604
+3.3V_Normal
4700pF
EU_OPT
C1618
30V
D1612
75
R1654
1K
R1666
DTV/MNT_L_OUT
0
R1638
COMP2_Pb-
AV_L_IN
ISA1530AC1
EU_OPT
Q1601
E
B
C
75
EU_OPT
R1628
REC_8
2K
EU_OPT
R1648
560
OPT
R1676
+12V/+15V
10K
R1618
5.6V
D1616
BLM18PG121SN1D
EU_OPT
L1602
SC1_G-/COMP1_Y-
47uF
16V
16V
EU_OPT
C1621
0
EU_OPT
R1690
0
R1637
SC1/COMP1_DET
75
R1619
30V
OPT
D1610
DTV/MNT_R_OUT
DTV/MNT_R_OUT
12K
R1631
OPT
OPT
C1659
0
EU_OPT
R1645
180
EU_OPT
R1639
5.6V
OPT
OPT
D1601
5.6V
OPT
OPT
D1607
10K
R1632
30V
OPT
D1603
SC1_CVBS_IN
330pF
50V
50V
C1662
120-ohm
L1603
+3.3V_Normal
0 . 1 u F
50V
50V
EU_OPT
C1642
0
EU_OPT
R4202
2SC3052
EU_OPT
Q1608
12K
R1636
330pF
50V
50V
C1611
SC_RE2
47K
EU_OPT
R1641
0
EU_OPT
R1669
30V
D1619
10pF
50V
OPT
C1614
SC1_ID
10pF
50V
OPT
C1615
5.6V
D1613
SC1_B+/COMP1_Pb+
EU_OPT
L1606
SC1_R+/COMP1_Pr+
COMP2_Pr-
+12V/+15V
12K
R1689
2SC3052
EU_OPT
Q1607
10K
R1633
470K
R1672
10K
R1685
COMP2_R_IN
10pF
OPT
C1602
OPT
OPT
C1658
P P J - 2 3 0 - 0 1
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
15K
EU_OPT
R1642
2SC3052
EU_OPT
Q1615
E
B
C
2SC3052
EU_OPT
Q1602
E
B
C
75
EU_OPT
R1616
330pF
50V
C1612
10K
R1617
470K
R1607
0
R1601
SC1/COMP1_L_IN
1K
R1614
220pF
50V
50V
OPT
C1648
75
R1605
OPT
C1606
C1606
75
R1608
0 . 1 u F
50V
EU_OPT
C1623
2K
OPT
R1675
12K
R1688
2K
EU_OPT
R1650
30V
D1615
1000pF
50V
50V
EU_OPT
C1610
COMP2_Y-
SC1_FB
SC1/COMP1_R_IN
10pF
OPT
C1601
C1601
75
R1604
5.6V
D1625
0
EU_OPT
R1611
0 . 1 u F
16V
16V
C1607
1000pF
50V
50V
C1616
5.6V
OPT
OPT
D1608
5.6V
D1617
SC1_G+/COMP1_Y+
SC1_R-/COMP1_Pr-
12K
R1630
30V
D1614
120-ohm
L1610
10K
EU_OPT
R1677
12K
EU_OPT
R1695
COMP2_DET
10K
R1652
220pF
50V
50V
OPT
C1608
47pF
50V
50V
C1643
0 . 1 u F
EU_OPT
C1636
120-ohm
L1604
0 . 1 u F
16V
16V
C1646
1K
R1615
1K
EU_OPT
R1680
1000pF
50V
50V
EU_OPT
C1609
4700pF
EU_OPT
C1619
+12V/+15V
0
EU_OPT
R1624
5.6V
OPT
D1609
1000pF
50V
50V
C1617
COMP2_Pb+
SC1_B-/COMP1_Pb-
+3.5V_ST
SC_RE1
RT1P141C-T112
EU_OPT
Q1610
1
2
3
OPT
C1605
C1605
AV_R_IN
51K
19-22_LAMP
R4207
30V
D1604
470K
R1626
470K
R1606
AV_CVBS_IN
0
R1602
1K
EU_OPT
R1681
10K
OPT
R1694
P P J 2 3 4 - 0 1
JK1603
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
10K
R1660
10K
R1613
10K
R1612
15K
EU_OPT
R1623
3.9K
EU_OPT
R1629
REC_8
30V
D1716
EU_OPT
SC1_SOG_IN
0
EU_OPT
R4210
SCART1_Rout
5.6K
EU_OPT
R1658
5.6K
EU_OPT
R1657
SCART1_Lout
10K
EU_OPT
R1667
2.2K
EU_OPT
R1656
33pF
EU_OPT
C1654
470K
OPT
R1662
33K
EU_OPT
R1664
10uF
16V
16V
EU_OPT
C1644
33K
EU_OPT
R1665
470K
OPT
R1661
2.2K
EU_OPT
R1655
10uF
16V
16V
EU_OPT
C1645
33pF
EU_OPT
C1655
10K
EU_OPT
R1668
P P J 2 3 3 - 0 1
JK1604
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
390
EU_OPT
R1635
390
R4211
EU_OPT
0
R4213
0
R4214
0
R4215
0 . 0 1 u F
C1665
EU_OPT
100
R4216
EU_OPT
22K
R4217
EU_OPT
100
R4219
EU_OPT
0 . 0 1 u F
C1664
EU_OPT
22K
R4218
EU_OPT
0
R4220
0
EU_OPT
R4221
0
EU_OPT
R4224
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
5.6V
D1624
0
R4223
10K
EU_OPT
R1687
DTV/MNT_R_OUT
DTV/MNT_L_OUT
0
R1603
0
R4205
LM324D
EU_OPT
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
VEE/GND
12
IN4+
13
I N 4 -
14
OUT4
SCART/RCA
GP2_Saturn7M
Rf
STATUS
C h i n a : U s i n g
NAME
AV_OPT
F u l l S c a r t / C o m p 1
CHINA_OPT
C h i n a : U s i n g
Composite
COMPONENT2
E U : U s i n g
EU_OPT
Rg
OPTION TABLE
[SCART PIN 8]
For EU & CHINA
E U : N o t U s i n g
E U : N o t U s i n g
C h i n a : N o t U s i n g
Gain=1+Rf/Rg
[SCART AUDIO MUTE]
CLOSE TO MSTAR
V e r . 1 . 1
41
IN CASE OF SMALL= 15V
IN CASE OF SMALL= 15V
FOR ESD & EMI
FOR ESD & EMI
FOR ESD & EMI
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.
BT_LOUT
BT_DM
BT_ON/OFF
BT_DP
GP2_Saturn7M
NON B/T
NOT USING B/T
V e r . 1 . 0
44
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.
10K
HOTEL_OPT
R21
AMP_RESET_N
100uF
16V
HOTEL_OPT
C27
EXT_OUT_L
1uF
16V
16V
HOTEL_OPT
C10
2 . 2 u F
50V
50V
HOTEL_OPT
C24
DA-8580
EAP38319001
EAP38319001
HOTEL_OPT
L11
2S
1S
1F
2F
100uF
16V
16V
HOTEL_OPT
C26
+24V
CB3216UA121
HOTEL_OPT
L10
TPA3124D2PWPR
HOTEL_OPT
IC10
3
PVCCL_2
2
SD
4
MUTE
1
PVCCL_1
6
RIN
5
LIN
7
BYPASS
8
AGND_1
9
AGND_2
10
PVCCR_1
11
VCLAMP
12
PVCCR_2
13
PGNDR_1
14
PGNDR_2
15
ROUT
16
BSR
17
GAIN1
18
GAIN0
19
AVCC_1
20
AVCC_2
21
BSL
22
LOUT
23
PGNDL_1
24
PGNDL_2
10K
HOTEL_OPT
R17
22uF
35V
35V
HOTEL_OPT
C13
0 . 1 u F
50V HOTEL_OPT
C17
4.7K
HOTEL_OPT
R18
AMP_MUTE_HOTEL
008:AO27
0 . 1 u F
50V
50V
HOTEL_OPT
C20
CB3216UA121
HOTEL_OPT
L12
1uF
16V
16V
HOTEL_OPT
C11
10K
OPT
R14
R14
10uF
35V
35V
HOTEL_OPT
C21
10uF
35V
35V
HOTEL_OPT
C12
10K
HOTEL_OPT
R20
0 . 2 2 u F
25V
25V
HOTEL_OPT
C18
2 . 2 u F
50V
50V
HOTEL_OPT
C25
4.7K
HOTEL_OPT
R19
EXT_OUT_R
2SC3052
HOTEL_OPT
Q10
E
B
C
2 . 2 u F
50V
50V
HOTEL_OPT
C23
0 . 1 u F
50V
HOTEL_OPT
C16
1K
HOTEL_OPT
R11
2 . 2 u F
50V
50V
HOTEL_OPT
C22
HP_ROUT
008:R28
10K
HOTEL_OPT
R12
1uF
HOTEL_OPT
C14
0 . 2 2 u F
25V
25V
HOTEL_OPT
C19
HP_LOUT
008:R28
10K
HOTEL_OPT
R15
1uF
HOTEL_OPT
C15
10K
OPT
R16
R16
100
HOTEL_OPT
R13
100
OPT
R10
China HOTEL Option
V e r . 1 . 0
CHINA HOTEL
GP2_Saturn7M
51
3 W E x t e r n a l S p e a k e r
EXT_SPEAKER_AMP
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