LG 42LD460B / 42LD460H (CHASSIS:LJ01B) 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_TU
TUNER_RESET
100pF
50V
50V
C5006
0 . 0 1 u F
25V
25V
BOOSTER_OPT
C5011
TU_CVBS
CONTROL_ATTEN
100
R5009
+3.3V_TU
0
RF_AGC_OPT
R5001
0 . 1 u F
16V
C5003
+5V_TU
BLM18PG121SN1D
L5003
2.2K
BOOSTER_OPT
R5017
+3.3V_Normal
+3.3V_TU
2SC3052
RF_AGC_OPT
Q5003
E
B
C
0 . 1 u F
16V
C5024
RF_SWITCH_CTL
22uF
16V
16V
KOR_RF_NOISE
C5018
0 . 1 u F
16V
RF_S/W_OPT
C5002
+1.2V/+1.8V_TU
LNA2_CTL
+5V_TU
IF_N_MSTAR
ISA1530AC1
Q5005
NON_TU_CVBS_BYPASS
E
B
C
MLB-201209-0120P-N2
BOOSTER_OPT
L5001
+3.3V_TU
+3.3V_TU
0 . 1 u F
16V
C5010
0 . 1 u F
16V
C5007
TU_SDA
1K
OPT
R5027
BLM18PG121SN1D
L5002
0
R5003
IF_AGC_SEL
0 . 1 u F
16V
C5021
10K
BOOSTER_OPT
R5021
4.7K
R5025
1K
OPT
R5026
100K
R5011
0 . 1 u F
16V
C5022
0
RF_S/W_OPT
R5002
ISA1530AC1
BOOSTER_OPT
Q5001
E
B
C
100pF
50V
50V
C5001
+3.3V_TU
1K
R5022
0 . 1 u F
16V
16V
C5016
OPT
0 . 1 u F
16V
16V
RF_AGC_OPT
C5026
0 . 1 u F
16V
16V
C5023
0
BOOSTER_OPT
R5014
82
R5032
+5V_TU
22uF
16V
16V
KOR_RF_NOISE
C5017
TU_SIF
ISA1530AC1
Q5004
E
B
C
22uF
16V
16V
C5020
22uF
16V
16V
C5019
IF_P_MSTAR
10uF
10V
10V
RF_AGC_OPT
C5027
TU_SCL
+5V_TU
2SC3052
BOOSTER_OPT
Q5002
E
B
C
0
R5024
10K
RF_AGC_OPT
R5028
10K
BOOSTER_OPT
R5019
+1.2V/+1.8V_TU
1
R5033
0 . 1 u F
16V
16V
C5028
10uF
10V
10V
C5029
0
NON_DEMOD_OPT
R5034
0
NON_DEMOD_OPT
R5035
1.2K
R5038
10
R5036
100
DEMOD_OPT
R5007
100
DEMOD_OPT
R5006
IF_P_EXT
IF_N_EXT
0 . 1 u F
16V
C5031
IF_AGC
0 . 1 u F
16V
C5025
470
R5029
TDTJ-S001D
TU5001
DVB_1INPUT_H_LGIT
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
S I F
8
NC[IF_TP]
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
SHIELD
19
AZ1117H-ADJTRE1(EH11A)
IC5001
2
OUTPUT
3
INPUT
1
ADJ/GND
220
R5030
NON_TU_CVBS_BYPASS
220
R5031
TDVJ-H001F
TU5001-*3
NTSC_1INPUT_H_LGIT
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
S I F
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
SHIELD
19
TDVJ-H031F
TU5001-*2
NTSC_1INPUT_V_LGIT
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
S I F
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
SHIELD
19
+5V_Normal
TDTR-T035F
TU5001-*1
NTSC_2INPUT_H_LGIT
14
+ B 3 [ 3 . 3 V ]
13
+ B 2 [ 1 . 2 V ]
5
NC_2
12
GND
11
VIDEO
2
BST_CTL
10
NC_4
4
NC_1[RF_AGC]
1
RF_S/W_CTL
17
DIF_1[N]
9
S I F
8
NC_3
3
+B1[5V]
16
IF/AGC
7
SDAT
6
SCLT
15
RESET
18
D I F _ 2 [ P ]
SHIELD
19
0
TU_CVBS_BYPASS
R5039
1.2K
R5018
NON_BR_TU_I2C
1.2K
R5020
NON_BR_TU_I2C
33
R5015
NON_BR_TU_I2C
33
R5016
NON_BR_TU_I2C
18pF
50V
50V
C5012
NON_BR_TU_I2C
18pF
50V
50V
C5013
NON_BR_TU_I2C
47pF
50V
50V
BR_TU_I2C
C5012-*1
1/16W
100
5%
BR_TU_I2C
R5016-*1
3.3K
BR_TU_I2C
R5020-*1
1/16W
100
5%
BR_TU_I2C
R5015-*1
47pF
50V
50V
BR_TU_I2C
C5013-*1
3.3K
BR_TU_I2C
R5018-*1
UDA45AL
TU5001-*4
NTSC_1INPUT_H_SANYO
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
S I F
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
SHIELD
19
V e r . 1 . 1
G P I O m u s t b e a d d e d .
ATSC_CAN TUNER
T h e p u l l - u p / d o w n o f L N A 2 _ C T L
is depended on MODLE_OPT_1.
GPIO must be added for FE_BOOSTER_CTL
GP2_Saturn7M
C l o s e t o t h e t u n e r
OPTION : RF AGC
OPTION : BOOSTER
P u l l - u p c a n ’ t b e a p p l i e d
because of MODEL_OPT_2
200mA
s h o u l d b e g u a r d e d b y g r o u n d
OPTION : RF S/W
LGIT CAN H/N TUNER for US&KOR&BRAZIL&TAIWAN&AUS
60mA
26
T h i s w a s b e i n g a p p l i e d t o t h e o n l y c h i n a d e m o d ,
s o t h i s h a s t o b e d e l e t e d i n b o t h m a i n a n d I S D B s h e e t .
* C h a n g e H i s t o r y .
1 . D e - r e t i n g
1 ) R 5 0 2 9 , R 5 0 3 0 , R 5 0 3 1 : 1 0 0 5 T y p e = = > 1 6 0 8 T y p e ( w . s . J e o n g _ 1 0 1 9 )
V e r 1 . 0 - - > 1 . 1 : C h a n g e o f c h i p t y p e , 0 9 1 0 1 9 , w . s . j e o n g
2 ) R 5 0 3 0 , R 5 0 3 1 : 2 0 0 / 1 6 0 8 T y p e = = > 2 2 0 / 2 0 1 2 T y p e ( w . s . J e o n g _ 1 1 1 6 )
2 . A D D o f T U N E R P / N ( w . s . J e o n g _ 1 1 1 6 )
V e r 1 . 1 - - > 1 . 2 : C h a n g e o f c h i p t y p e , A d d o f T u n e r P / N f o r N T S C _ 1 I N P U T
e r 1 . 1 - - >
Option name:BR_TU_I2C
B R A Z I L m o d e l u s e I 2 C S t a n d a r d M o d e
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.
FE_TS_CLK
0 . 1 u F
16V
C2921
ISDB_DEMOD
TP2902
ISDB_DEMOD
IF_N_EXT
22
R2913
ISDB_DEMOD
TP2901
ISDB_DEMOD
10K
R2906
ISDB_DEMOD
0 . 1 u F
16V
C2911
ISDB_DEMOD
IF_P_EXT
FE_TS_DATA[0-7]
0 . 1 u F
16V
C2917
ISDB_DEMOD
2.2K
R2915
OPT
0 . 1 u F
C2926
ISDB_DEMOD
0 . 1 u F
16V
C2924
ISDB_DEMOD
22
R2911
ISDB_DEMOD
0 . 1 u F
C2928
ISDB_DEMOD
0 . 1 u F
C2910
ISDB_DEMOD
TP2907
ISDB_DEMOD
0 . 1 u F
16V
C2920
ISDB_DEMOD
DEMOD_SCL
0 . 1 u F
C2927
ISDB_DEMOD
TP2904
ISDB_DEMOD
0 . 1 u F
16V
C2918
ISDB_DEMOD
DEMOD_RESET
2.2K
R2907
ISDB_DEMOD
0 . 1 u F
16V
C2913
ISDB_DEMOD
0 . 1 u F
C2905
ISDB_DEMOD
1M
ISDB_OPT
R2909
IF_AGC_ISDB
+3.3V_DE
TP2905
ISDB_DEMOD
0 . 1 u F
C2925
ISDB_DEMOD
22
R2912
ISDB_DEMOD
0 . 1 u F
C2908
ISDB_DEMOD
FE_TS_VAL_ERR
FE_TS_DATA[0]
0 . 1 u F
C2906
ISDB_DEMOD
0 . 1 u F
C2907
ISDB_DEMOD
2.2K
R2905
ISDB_DEMOD
0 . 1 u F
16V
C2916
ISDB_DEMOD
15pF
50V
50V
C2919
ISDB_DEMOD
22
R2910
ISDB_DEMOD
0 . 1 u F
16V
C2923
ISDB_DEMOD
0 . 1 u F
C2903
ISDB_DEMOD
FE_TS_SYNC
+3.3V_DE
TP2903
ISDB_DEMOD
2.2K
R2914
OPT
DEMOD_SDA
0 . 1 u F
16V
C2922
ISDB_DEMOD
15pF
50V
50V
C2915
ISDB_DEMOD
TP2906
ISDB_DEMOD
0 . 1 u F
C2909
ISDB_DEMOD
0 . 1 u F
C2904
ISDB_DEMOD
2.2K
R2908
ISDB_DEMOD
+1.2V_DE
0 . 1 u F
16V
C2912
ISDB_DEMOD
0 . 1 u F
C2901
ISDB_DEMOD
FE_TS_DATA[0]
0 . 1 u F
C2902
ISDB_DEMOD
2.2K
R2904
ISDB_DEMOD
0 . 1 u F
16V
C2914
ISDB_DEMOD
10K
1%
R2903
ISDB_DEMOD
25MHz
X2901
ISDB_DEMOD
MN884433
ISDB_DEMOD
IC2901
1
VSS_1
2
AVDD_S
3
A I I _ S
4
AIQ_S
5
AVSS_S
6
VRT_S
7
VRB_S
8
TCPO_S
9
VDDL_1
10
MSCL_S
11
MSDA_S
12
VSS_2
13
VSSH
14
PSEL
15
ZSEL
16
VDDL_2
17
ACKI
18
TCPO_T
19
IR_T
20
VRT_T
21
VRB_T
22
AVDD_T
23
AIN_T
24
AIP_T
25
AVSS_T
26
VSS_3
27
MSCL_T
28
MSDA_T
29
VDDH_1
30
GPO1
31
AGCI_T
32
AGCR_T
33
GPO0
34
VDDL_3
35
VSS_4
36
XO
37
XI
38
VDDH_2
39
GPI1
40
GPI0
41
TEST4
42
SHVPP
43
SHVDDH
44
NC_1
45
VSS_5
46
VDDL_4
47
TCK
48
TDI
49
NRST
50
TEST3
51
VSS_6
52
VDDL_5
53
TRST
54
TMS
55
CSEL0
56
CSEL1
57
TDO
58
SYNCA
59
ERRA
60
SYNCB
61
ERRB
62
VSS_7
63
VDDL_6
64
SADR_T
65
NC_2
66
SADR_S
67
HDVDDL0
68
VSS_8
69
SDA
70
SCL
71
VDDH_3
72
SADR
73
INTA
74
INTB
75
VSS_9
76
TEST1
77
TEST2
78
SCKA
79
GPI2
80
SDOA
81
PCKA
82
DENA
83
VDDH_4
84
VSS_10
85
HDVPP
86
RON
87
NC_3
88
HDVDDH
89
NC_4
90
HDVDDL1
91
VSS_11
92
VDDL_7
93
SCKB
94
TEST0
95
SDOB
96
PCKB
97
DENB
98
GPO2
99
VDDH_5
100
AGC_S
FE_TS_DATA[1]
FE_TS_DATA[6]
FE_TS_DATA[4]
FE_TS_DATA[7]
FE_TS_DATA[5]
FE_TS_DATA[0]
FE_TS_DATA[2]
FE_TS_DATA[3]
ISDB-T Demodulator
GP2_Saturn7M
V e r . 1 . 0
PANASONIC (ISDB-T)
(FE_TS_SERIAL)
MN884433
(FE_TS_SERIAL)
28
AMP_I2C HAVE PULL-UP
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.
+3.3V_DE
0
ISDB_DEMOD
R3001
BLM18PG121SN1D
L3001
ISDB_POWER
0.1uF
C3002
ISDB_POWER
0.1uF
C3001
ISDB_POWER
IF_AGC_SEL
TP3002
+3.3V_Normal
IF_AGC_MAIN
IF_AGC
0
MSTAR DEMOD
R3002
IF_AGC_ISDB
22uF
16V
16V
C3006
ISDB_POWER
10uF
10V
10V
C3004
ISDB_POWER
10K
ISDB_BCD
R3005
+5V_Normal
10K
ISDB_BCD
R3007
0 . 1 u F
OPT
C3008
0 . 1 u F
16V
C3003
ISDB_POWER
10K
ISDB_SEMTEK
R3006
ISDB_BCD
L3002
+1.2V_DE
+3.3V_DE
THERMAL
AP2132MP-2.5TRG1
ISDB_BCD
IC3001
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[ E P ]
SC4215ISTRT
IC3001-*1
ISDB_SEMTEK
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
10K
ISDB_BCD
R3004
5.1K
R3004-*1
ISDB_SEMTEK
0 . 1 u F
OPT
C3007
10K
R3003
ISDB_POWER
0 . 1 u F
16V
C3005
ISDB_POWER
Demodulator
GP2_Saturn7M
V e r . 1 . 0
IF AGC SELECTION
P a n a s o n i c D e m o d u l a t o r P o w e r ( 3 . 3 V , 1 . 2 V )
29
C h a n g e L i s t
SEMTEK --> BCD
A d d R 3 0 0 5 , R 3 0 0 6 , R 3 0 0 7 , L 3 0 0 2 ,
C 3 0 0 7 , C 3 0 0 8 ( o p t )
Change R3004 10Kohm
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
R3830
P P J 2 3 9 - 0 1
NON_CI_4/5/60
JK3802
5 J
[GN2]O-SPRING
6 J
[GN2]E-LUG
4 J
[GN2]CONTACT
7K
[BL2]E-LUG-S
5K
[BL2]O-SPRING
7L
[RD2]E-LUG-S
5L
[RD2]O-SPRING_1
5M
[WH2]O-SPRING
4N
[RD2]CONTACT
5N
[RD2]O-SPRING_2
6N
[RD2]E-LUG
6D
[GN1]E-LUG
5D
[GN1]O-SPRING
4D
[GN1]CONTACT
7E
[BL1]E-LUG-S
5E
[BL1]O-SPRING
7F
[RD1]E-LUG-S
5F
[RD1]O-SPRING_1
4F
[RD1]CONTACT_1
5G
[WH1]O-SPRING
4H
[RD1]CONTACT_2
5H
[RD1]O-SPRING_2
6H
[RD1]E-LUG
COMP2_Pb-
470K
R3816
TP3807
AV_CVBS_IN
SC1/COMP1_DET
001:AR23
AV_L_IN
SC1_CVBS_IN
0
R3806
470K
R3820
SC1_SOG_IN
5.6V
D3812
SC_RE2
2SC3052
Q3802
E
B
C
75
R3815
REAR_COMP2
10pF
50V
50V
OPT
C3803
10pF
50V
50V
OPT
C3808
COMP2_DET
SC1_R+/COMP1_Pr+
+3.3V_Normal
SC1_R-/COMP1_Pr-
0
R3835
OPT
12K
R3828
5.6V
D3810
1K
R3803
SC1_G+/COMP1_Y+
30V
D3805
0
R3807
75
R3818
REAR_COMP2
5.6V
D3806
AV_CVBS_DET
75
R3814
TP3806
0
R3860
REAR_COMP2
COMP2_Pb+
0
R3833
OPT
SC1_B+/COMP1_Pb+
0
R3809
REAR_COMP2
10pF
50V
50V
OPT
C3806
0
R3861
REAR_COMP2
TP3809
0
R3859
OPT
2SC3052
Q3803
E
B
C
75
R3812
+5V_Normal
0
R3858
OPT
10K
R3802
SC1_FB
0
R3838
OPT
+3.3V_Normal
COMP2_Y-
DTV/MNT_VOUT
5.6V
D3807
0
R3857
OPT
P P J 2 3 8 - 0 1
NON_CI_30
JK3801
5D
[GN2]O-SPRING
6D
[GN2]E-LUG
4D
[GN2]CONTACT
7E
[BL2]E-LUG-S
5E
[BL2]O-SPRING
7F
[RD2]E-LUG-S
5F
[RD2]O-SPRING_1
5G
[WH2]O-SPRING
4H
[RD2]CONTACT
5H
[RD2]O-SPRING_2
6H
[RD2]E-LUG
6A
[YL1]E-LUG
5A
[YL1]O-SPRING
4A
[YL1]CONTACT
5B
[WH1]O-SPRING
4C
[RD1]CONTACT
5C
[RD1]O-SPRING
6C
[RD1]E-LUG
270
R3856
10K
R3822
270
R3855
5.6V
D3801
10pF
50V
50V
OPT
C3802
TP3802
82
R3854
OPT
SC1/COMP1_L_IN
30V
D3804
SC1_B-/COMP1_Pb-
82
R3853
OPT
TP3808
1K
R3827
TP3801
4.7K
R3852
470K
R3821
3.6K
R3851
OPT
COMP2_L_IN
0 . 4 7 u F
25V
C3813
OPT
SC1_ID
75
R3817
SCART1_Rout
TP3804
30V
D3808
100pF
50V
OPT
OPT
C3801
SC1_G-/COMP1_Y-
COMP2_Pr+
12K
R3829
AV_R_IN
5.6V
D3802
REAR_COMP2
1000pF
50V
50V
C3805
10pF
50V
50V
OPT
C3810
30V
D3809
SCART1_MUTE
0
R3811
+5V_Normal
10K
R3825
SC1/COMP1_R_IN
+3.3V_Normal
COMP2_R_IN
TP3805
COMP2_Pr-
10K
R3824
75
R3813
10K
R3823
COMP2_Y+
30V
D3811
1K
R3805
REAR_COMP2
0
R3808
470K
R3819
10pF
50V
50V
OPT
C3804
SCART1_Lout
12K
R3831
SC_RE1
5.6V
D3813
10K
R3804
REAR_COMP2
1000pF
50V
50V
C3811
AV_CVBS_IN2
30V
D3803
TP3803
1000pF
50V
50V
C3807
10K
R3826
1000pF
50V
50V
C3809
0
R3810
REAR_COMP2
0
R3848
REAR_COMP2
NON CI LOW
GP2_Saturn7M
V e r . 1 . 1
31
RESULT
HIGH
SC1/COMP1_DET
SCART OPTION BLOCK
AV_CVBS_DET
SC1/COMP1_DET
HIGH
HIGH
LOW
HIGH
LOW
SC1/COMP1_DET
LOW
AV_CVBS_DET
LOW
OPTION NAME: REAR_COMP2
R3810,R3818,R3861,R3860,R3815,
R3809,R3848,R3804,R3805,D3802
* I n c a s e o f S i d e G e n d e r M o d e l ,
y o u m u s t n o t s e l e c t t h i s o p t i o n
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