LG 32LD550 (CHASSIS:LB01B) 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
C5006
100pF
50V
100pF
50V
C5011
0.01uF
25V
0.01uF
25V
BOOSTER_OPT
TU_CVBS
CONTROL_ATTEN
R5009
100
100
+3.3V_TU
R5001
0
RF_AGC_OPT
C5003
0.1uF
16V
16V
+5V_TU
L5003
BLM18PG121SN1D
R5017
2.2K
2.2K
BOOSTER_OPT
+3.3V_Normal
+3.3V_TU
Q5003
2SC3052
RF_AGC_OPT
E
B
C
C5024
0.1uF
16V
RF_SWITCH_CTL
C5018
22uF
16V
OPT
22uF
16V
OPT
C5002
0.1uF
16V
RF_S/W_OPT
+1.2V/+1.8V_TU
LNA2_CTL
+5V_TU
IF_N_MSTAR
Q5005
ISA1530AC1
NON_TU_CVBS_BYPASS
E
B
C
L5001
MLB-201209-0120P-N2
BOOSTER_OPT
+3.3V_TU
+3.3V_TU
C5010
0.1uF
16V
C5007
0.1uF
16V
16V
TU_SDA
R5027
1K
OPT
L5002
BLM18PG121SN1D
R5003
0
IF_AGC_SEL
C5021
0.1uF
16V
16V
R5021
10K
BOOSTER_OPT
R5025
4.7K
4.7K
R5026
1K
OPT
R5011
100K
C5022
0.1uF
16V
16V
R5002
0
RF_S/W_OPT
Q5001
ISA1530AC1
BOOSTER_OPT
E
B
C
C5001
100pF
50V
100pF
50V
+3.3V_TU
R5022
1K
1K
C5016
0.1uF
16V
0.1uF
16V
OPT
C5026
0.1uF
16V
16V
RF_AGC_OPT
C5023
0.1uF
16V
0.1uF
16V
R5014
0
BOOSTER_OPT
R5032
82
82
+5V_TU
C5017
22uF
16V
OPT
22uF
16V
OPT
TU_SIF
Q5004
ISA1530AC1
E
B
C
C5020
22uF
16V
22uF
16V
C5019
22uF
16V
22uF
16V
IF_P_MSTAR
C5027
10uF
10V
10uF
10V
RF_AGC_OPT
TU_SCL
+5V_TU
Q5002
2SC3052
BOOSTER_OPT
E
B
C
R5024
0
R5028
10K
10K
RF_AGC_OPT
R5019
10K
BOOSTER_OPT
+1.2V/+1.8V_TU
R5033
1
C5028
0.1uF
16V
0.1uF
16V
C5029
10uF
10V
10uF
10V
R5034
0
NON_DEMOD_OPT
R5035
0
NON_DEMOD_OPT
R5038
1.2K
1.2K
R5036
10
R5007
100
DEMOD_OPT
R5006
100
DEMOD_OPT
IF_P_EXT
IF_N_EXT
C5031
0.1uF
16V
IF_AGC
C5025
0.1uF
16V
R5029
470
TU5001
TDTJ-S001D
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
SIF
8
NC[IF_TP]
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
IC5001
AZ1117H-ADJTRE1(EH11A)
2
OUTPUT
3
INPUT
1
ADJ/GND
R5030
220
NON_TU_CVBS_BYPASS
R5031
220
TU5001-*3
TDVJ-H001F
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
SIF
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
TU5001-*2
TDVJ-H031F
TDVJ-H031F
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
SIF
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
+5V_Normal
TU5001-*1
TDTR-T035F
TDTR-T035F
NTSC_2INPUT_H_LGIT
14
+B3[3.3V]
13
+B2[1.2V]
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
SIF
8
NC_3
3
+B1[5V]
16
IF/AGC
7
SDAT
6
SCLT
15
RESET
18
DIF_2[P]
19
SHIELD
R5039
0
TU_CVBS_BYPASS
R5018
1.2K
1.2K
NON_BR_TU_I2C
R5020
1.2K
1.2K
NON_BR_TU_I2C
R5015
NON_BR_TU_I2C
33
R5016
NON_BR_TU_I2C
33
C5012
18pF
50V
18pF
50V
NON_BR_TU_I2C
C5013
18pF
50V
18pF
50V
NON_BR_TU_I2C
C5012-*1
47pF
50V
47pF
50V
BR_TU_I2C
R5016-*1
100
100
1/16W
5%
5%
BR_TU_I2C
R5020-*1
3.3K
3.3K
BR_TU_I2C
R5015-*1
100
100
1/16W
5%
5%
BR_TU_I2C
C5013-*1
47pF
50V
47pF
50V
BR_TU_I2C
R5018-*1
3.3K
3.3K
BR_TU_I2C
TU5001-*4
UDA45AL
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
SIF
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
Ver. 1.1
GPIO must be added.
ATSC_CAN TUNER
The pull-up/down of LNA2_CTL
is depended on MODLE_OPT_1.
GPIO must be added for FE_BOOSTER_CTL
is depended on MODLE_OPT_1.
GPIO must be added for FE_BOOSTER_CTL
GP2_Saturn7M
Close to the tuner
OPTION : RF AGC
OPTION : BOOSTER
Pull-up can’t be applied
because of MODEL_OPT_2
because of MODEL_OPT_2
200mA
should be guarded by ground
OPTION : RF S/W
LGIT CAN H/N TUNER for US&KOR&BRAZIL&TAIWAN&AUS
60mA
26
This was being applied to the only china demod,
so this has to be deleted in both main and ISDB sheet.
so this has to be deleted in both main and ISDB sheet.
*Change History.
1.De-reting
1) R5029,R5030,R5031 : 1005 Type ==> 1608 Type(w.s.Jeong_1019)
Ver 1.0 --> 1.1:Change of chip type, 091019, w.s.jeong
2) R5030,R5031 : 200/1608 Type ==> 220/2012 Type(w.s.Jeong_1116)
2.ADD of TUNER P/N (w.s.Jeong_1116)
Ver 1.1 --> 1.2:Change of chip type, Add of Tuner P/N for NTSC_1INPUT
091116, w.s.jeong
Option name:BR_TU_I2C
BRAZIL model use I2C Standard Mode
BRAZIL model use I2C Standard Mode
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_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]
FE_TS_CLK
C2921
0.1uF
16V
ISDB_DEMOD
TP2902
ISDB_DEMOD
IF_N_EXT
R2913
22
ISDB_DEMOD
TP2901
ISDB_DEMOD
R2906
10K
ISDB_DEMOD
C2911
0.1uF
0.1uF
16V
ISDB_DEMOD
IF_P_EXT
FE_TS_DATA[0-7]
C2917
0.1uF
16V
ISDB_DEMOD
R2915
2.2K
OPT
C2926
0.1uF
ISDB_DEMOD
C2924
0.1uF
16V
ISDB_DEMOD
R2911
22
ISDB_DEMOD
C2928
0.1uF
ISDB_DEMOD
C2910
0.1uF
0.1uF
ISDB_DEMOD
TP2907
ISDB_DEMOD
C2920
0.1uF
16V
ISDB_DEMOD
DEMOD_SCL
C2927
0.1uF
ISDB_DEMOD
TP2904
ISDB_DEMOD
C2918
0.1uF
16V
ISDB_DEMOD
DEMOD_RESET
R2907
2.2K
ISDB_DEMOD
C2913
0.1uF
16V
ISDB_DEMOD
C2905
0.1uF
ISDB_DEMOD
R2909
1M
1M
ISDB_OPT
IF_AGC_ISDB
+3.3V_DE
TP2905
ISDB_DEMOD
C2925
0.1uF
ISDB_DEMOD
R2912
22
ISDB_DEMOD
C2908
0.1uF
ISDB_DEMOD
FE_TS_VAL_ERR
FE_TS_DATA[0]
C2906
0.1uF
ISDB_DEMOD
C2907
0.1uF
ISDB_DEMOD
R2905
2.2K
ISDB_DEMOD
C2916
0.1uF
16V
ISDB_DEMOD
C2919
15pF
50V
15pF
50V
ISDB_DEMOD
R2910
22
ISDB_DEMOD
C2923
0.1uF
16V
ISDB_DEMOD
C2903
0.1uF
ISDB_DEMOD
FE_TS_SYNC
+3.3V_DE
TP2903
ISDB_DEMOD
R2914
2.2K
OPT
DEMOD_SDA
C2922
0.1uF
16V
ISDB_DEMOD
C2915
15pF
50V
15pF
50V
ISDB_DEMOD
TP2906
ISDB_DEMOD
C2909
0.1uF
ISDB_DEMOD
C2904
0.1uF
ISDB_DEMOD
R2908
2.2K
ISDB_DEMOD
+1.2V_DE
C2912
0.1uF
16V
ISDB_DEMOD
C2901
0.1uF
ISDB_DEMOD
FE_TS_DATA[0]
C2902
0.1uF
ISDB_DEMOD
R2904
2.2K
ISDB_DEMOD
C2914
0.1uF
16V
ISDB_DEMOD
R2903
10K
10K
1%
ISDB_DEMOD
X2901
25MHz
25MHz
ISDB_DEMOD
IC2901
MN884433
ISDB_DEMOD
1
VSS_1
2
AVDD_S
3
AII_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
ISDB-T Demodulator
GP2_Saturn7M
Ver. 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
+3.3V_DE
IC3001
SC4215ISTRT
ISDB_POWER
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
R3001
0
ISDB_DEMOD
L3001
BLM18PG121SN1D
ISDB_POWER
C3002
0.1uF
ISDB_POWER
R3003
10K
ISDB_POWER
C3001
0.1uF
ISDB_POWER
IF_AGC_SEL
C3005
0.1uF
16V
ISDB_POWER
R3004
5.1K
ISDB_POWER
C3003
0.1uF
16V
ISDB_POWER
TP3002
+1.2V_DE
C3006
22uF
16V
22uF
16V
ISDB_POWER
+3.3V_Normal
IF_AGC_MAIN
IF_AGC
R3002
0
MSTAR DEMOD
C3004
10uF
10V
10uF
10V
ISDB_POWER
IF_AGC_ISDB
Demodulator
GP2_Saturn7M
Ver. 1.0
IF AGC SELECTION
Panasonic Demodulator Power(3.3V,1.2V)
29
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.
R3830
12K
12K
JK3802
PPJ239-01
NON_CI_4/5/60
NON_CI_4/5/60
5J
[GN2]O-SPRING
6J
[GN2]E-LUG
4J
[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-
R3816
470K
470K
TP3807
AV_CVBS_IN
SC1/COMP1_DET
001:AR23
AV_L_IN
SC1_CVBS_IN
R3806
0
0
R3820
470K
470K
SC1_SOG_IN
D3812
5.6V
SC_RE2
Q3802
2SC3052
2SC3052
E
B
C
R3815
75
C3803
10pF
50V
10pF
50V
OPT
C3808
10pF
50V
10pF
50V
OPT
COMP2_DET
SC1_R+/COMP1_Pr+
+3.3V_Normal
SC1_R-/COMP1_Pr-
R3835
0
0
OPT
R3828
12K
12K
D3810
5.6V
R3803
1K
SC1_G+/COMP1_Y+
D3805
30V
30V
R3807
0
0
R3818
75
D3806
5.6V
AV_CVBS_DET
R3814
75
TP3806
R3860
0
0
COMP2_Pb+
R3833
0
0
OPT
SC1_B+/COMP1_Pb+
R3809
0
0
C3806
10pF
50V
10pF
50V
OPT
R3861
0
0
TP3809
R3859
0 OPT
Q3803
2SC3052
2SC3052
E
B
C
R3812
75
+5V_Normal
R3858
0
0
OPT
R3802
10K
SC1_FB
R3838
0 OPT
+3.3V_Normal
COMP2_Y-
DTV/MNT_VOUT
D3807
5.6V
R3857
0
OPT
JK3801
PPJ238-01
NON_CI_30
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
R3856
270
R3822
10K
R3855
270
D3801
5.6V
C3802
10pF
50V
10pF
50V
OPT
TP3802
R3854
82
82
OPT
SC1/COMP1_L_IN
D3804
30V
SC1_B-/COMP1_Pb-
R3853
82
OPT
TP3808
R3827
1K
1K
TP3801
R3852
4.7K
R3821
470K
R3851
3.6K
OPT
COMP2_L_IN
C3813
0.47uF
25V
OPT
SC1_ID
R3817
75
SCART1_Rout
TP3804
D3808
30V
30V
C3801
100pF
50V
OPT
SC1_G-/COMP1_Y-
COMP2_Pr+
R3829
12K
AV_R_IN
D3802
5.6V
C3805
1000pF
50V
1000pF
50V
C3810
10pF
50V
10pF
50V
OPT
D3809
30V
SCART1_MUTE
R3811
0
0
+5V_Normal
R3825
10K
10K
SC1/COMP1_R_IN
+3.3V_Normal
COMP2_R_IN
TP3805
COMP2_Pr-
R3824
10K
10K
R3813
75
R3823
10K
10K
COMP2_Y+
D3811
30V
R3805
1K
1K
R3808
0
0
R3819
470K
C3804
10pF
50V
10pF
50V
OPT
SCART1_Lout
R3831
12K
SC_RE1
D3813
5.6V
5.6V
R3804
10K
C3811
1000pF
50V
1000pF
50V
AV_CVBS_IN2
D3803
30V
30V
TP3803
C3807
1000pF
50V
1000pF
50V
R3826
10K
10K
C3809
1000pF
50V
1000pF
50V
R3810
0
R3848
0
0
NON CI LOW
GP2_Saturn7M
Ver. 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
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