LG 32LN520B (CHASSIS:LA32B) 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.
LVDS_NON_EU
2012/09/19
11
NC4_S7LRM
R1100
3.3K
3.3K
OPT
RXB0-
RXA0+
RXA0-
C1101
0.1uF
16V
0.1uF
16V
HD
RXA2-
C1100
0.1uF
16V
0.1uF
16V
FHD
RXA3-
RXBCK-
RXA1-
P1101
FF10001-30
HD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
RXA1-
RXB4-
RXA2+
+3.3V_Normal
RXB1+
RXBCK+
PANEL_VCC
RXB3+
RXA0+
RXA3-
RXB4+
RXA4-
RXA4+
RXA1+
RXA2+
+3.3V_Normal
RXB2-
R1101
10K
OPT
RXA1+
RXA2-
RXB1-
R1103
3.3K
3.3K
OPT
RXACK+
RXA3+
RXA0-
PANEL_VCC
RXA3+
RXACK-
RXB2+
R1104
10K
10K
OPT
RXB3-
RXB0+
P1100
FI-RE51S-HF-J-R1500
FHD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
RXACK+
RXACK-
L1101
CIS21J121
120
HD
L1100
CIS21J121
120
FHD
R1111
0
NON_AUO/CMI_39inch
R1112
0
NON_AUO39inch
R1113
0
NON_AUO39inch
RXB1-
RXB0-
RXA4+
RXA1-
Pol-change
RXB4+
RXACK+
RXBCK-
RXA0+
RXA2+
LVDS (NON EU)
RXA2+
RXBCK-
RXB4-
RXA3+
RXA1+
RXB2+
RXB3-
RXA3-
RXBCK-
RXACK-
RXA2+
RXA1-
RXB1-
RXB3-
RXA3+
RXA2-
RXA0+
RXA4+
Shift
RXBCK+
RXB2-
RXA4+
[51Pin LVDS Connector]
(For FHD 60Hz)
(For FHD 60Hz)
RXACK+
RXA3-
RXACK-
RXB3+
RXA3+
RXA1-
RXB0-
RXA0-
RXACK+
RXB3+
LVDS_SEL
RXA4-
RXB3+
RXA4+
RXA2-
RXA2+
RXA1+
RXB2-
Pol-change
RXB4+
RXB1-
RXA4-
RXACK+
RXB3-
RXB0+
RXB3+
RXBCK+
RXB4-
RXA0+
RXA2+
RXB0+
RXB1+
RXA3-
RXA2-
RXBCK+
RXB4-
RXA0+
RXA4+
RXA2+
RXB3-
RXA0-
RXB0-
RXA4-
RXACK-
RXB0-
RXA4+
RXB2+
RXA1-
RXB2+
RXACK-
RXA3-
RXA1+
RXA3-
RXA1+
RXB3+
RXB3-
RXA3-
RXB1-
RXB4+
FOR FHD REVERSE(10bit)
RXB0+
RXB3-
RXA3+
RXA0+
RXA2-
RXACK-
RXB1-
RXA3+
RXB2-
RXBCK-
RXBCK+
RXA1+
RXA0-
RXA3+
RXA0-
RXB2+
RXB0-
RXA0-
RXB2-
RXACK-
MIRROR
RXB4-
RXA0-
RXB2+
RXA4+
RXB4-
RXA1+
RXB3+
RXB0+
RXB1+
RXA1-
RXA0-
RXA4-
RXB2-
Change in S7LR
RXA4-
RXB2+
MIRROR
RXB1-
RXA3+
RXA1-
RXACK+
RXB3+
RXB0+
RXB4-
RXACK+
RXB1+
RXACK-
RXA4-
RXA1-
RXA2-
RXA0+
RXB0-
RXB1+
RXB4+
RXB2+
RXBCK-
RXB0-
FOR FHD REVERSE(8bit)
RXBCK-
RXBCK+
RXB4+
RXB0+
RXB2-
RXA1+
RXBCK-
RXA2-
RXB1+
RXB1+
RXB1-
RXA4-
RXB4+
[30Pin LVDS Connector]
(For HD 60Hz_Normal)
(For HD 60Hz_Normal)
Change in S7LR
RXB1+
RXB3-
RXA2+
RXA3-
RXA2-
RXB2-
LVDS_SEL
RXBCK+
RXB4-
RXB0+
RXA0+
RXB4+
RXBCK+
RXACK+
EU pin assign is different from NON EU.
Because of position of HD wafer.
Because of position of HD wafer.
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.
+1.8V_TU
R3760
0
HALF_NIM/IF_NON_FILTER
C3743
20pF
50V
20pF
50V
OPT
R3741-*1
1K
TU_IIC_NON_ATSC_1K
TU_GND_A
R3704
100
R3740-*1
1K
TU_IIC_NON_ATSC_1K
R3735
33
+3.3V_TU
LNA2_CTL
C3742
20pF
50V
20pF
50V
OPT
TUNER_RESET
L3703
CIS21J121
IF_P_MSTAR
R3758
82
82
OPT
R3736
33
TU_GND_A
DEMOD_SCL
IF_AGC_MAIN
TU3700
TDSS-G201D
TUNER_OPT
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC_1
9
IF_AGC
8
NC_3
3
SCL
7
+B2[1.8V]
6
NC_2
12
SHIELD
A1
A1
B1
B1
TU_SDA
+3.3V_TU
C3727
0.1uF
16V
R3733
100K
C3707
100pF
50V
100pF
50V
FE_TS_VAL_ERR
C3716
0.1uF
16V
+1.8V_TU
C3708
0.1uF
16V
16V
LNA_CTRL_2
C3738
0.1uF
16V
0.1uF
16V
+3.3V_TU
R3732
100
100
IC3703
AP1117E18G-13
2
OUT
3
IN
1
ADJ/GND
R3705
0
OPT
R3784
0
OPT
FE_TS_DATA[0]
TU_SCL
C3737
100pF
50V
100pF
50V
+3.3V_TU
C3740
0.1uF
16V
TU_CVBS
TU_SIF
R3761
0
HALF_NIM/IF_NON_FILTER
BR_RESET_DEMOD
R3740
1.8K
TU_IIC_ATSC_1.8K
TU_GND_A
FE_TS_CLK
RF_SWITCH_CTL
C3702
0.1uF
16V
OPT
FE_TS_SYNC
IF_AGC_SEL
C3710
0.1uF
16V
LNA_CTRL_1
C3713
18pF
50V
18pF
50V
C3701
0.1uF
16V
0.1uF
16V
DEMOD_SDA
C3717
0.1uF
16V
+3.3V_TU
C3711
18pF
50V
18pF
50V
R3741
1.8K
TU_IIC_ATSC_1.8K
C3725
0.1uF
16V
16V
IF_N_MSTAR
+3.3V_Normal
C3723
22uF
6.3V
22uF
6.3V
C3715
22uF
6.3V
22uF
6.3V
R3766
1
1
C3741-*1
10uF 10V
CAP_X7R_MP
C3741
10uF
10uF
10V
CAP_10uF_X5R
85C
R3761-*1
10
10
HALF_NIM/IF_FILTER
R3760-*1
10
10
HALF_NIM/IF_FILTER
R3714
0
NON_ASIA
R3715
0
NON_ASIA
TU3702
TDSH-G501D(B)
TUNER_ISOLATOR_DVB_1INPUT_H
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+B2[1.8V]
6
SIF
A1
A1
B1
B1
A2
A2
B2
B2
TU3700-*1
TDSS-H501F(B)
TUNER_ATSC
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC_1
9
IF_AGC
8
NC_3
3
SCL
7
+B2[1.8]
6
NC_2
12
SHIELD
A1
A1
B1
X
2012.06.21
should be guarded by ground
TUNER MULTI-OPTION
NC4_S7LRM
GLOBAL tuner block except EU and China
Pull-up can’t be applied
because of MODEL_OPT_2
because of MODEL_OPT_2
close to TUNER
close to TUNER
FE_BOOSTER_CTL
1. should be guarded by ground
2. No via on both of them
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
Ground Width >= 24mils
2. No via on both of them
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
Ground Width >= 24mils
close to the tuner pin, add,09029
Close to the tuner
TUNER_NON_EU
Size change,0929
14
FE_AGC_SPEED_CTL
GND seperation for ASIS tuner
CHANGE TO
10UF 10V X5R
10UF 10V X5R
CHANGE TO
6.3V 2012 X5R
6.3V 2012 X5R
CHANGE TO
6.3V 2012 X5R
6.3V 2012 X5R
HPF
LPF
Frequence
1
0
0
54MHz~350MHz
TW_FE_LNA FILTER_SETTING
CTRL_1
CTRL_2
0
350Hz~450MHz
450Hz~870MHz
Filter_Type
1
0
Through
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.
COMP2_Pr+
AV2_CVBS_DET
R1714
10K
10K
R1721
12K
12K
R1715
10K
10K
R1719
12K
AV2
R1713
1K
R1707
75
R1704
470K
R1700
470K
AV2
D1706
5.6V
OPT
R1712
1K
COMP2_Pb+
+3.3V_Normal
COMP2_DET
R1701
470K
AV2
R1705
75
75
R1709
10K
COMP2_R_IN
R1703
470K
D1709
5.6V
OPT
AV2_R_IN
D1702
5.6V
OPT
D1701
5.6V
AV2_LR_ZENER
C1701
1000pF
50V
OPT
R1716
10K
10K
AV2
R1710
10K
10K
C1704
1000pF
50V
OPT
R1706
75
COMP2_L_IN
R1711
1K
AV2
+3.3V_Normal
+3.3V_Normal
D1704
5.6V
COMP_LR_ZENER
R1702
75
AV2
D1700
5.6V
AV2_LR_ZENER
R1718
12K
AV2
R1708
10K
AV2
AV2_CVBS_IN
C1703
47pF
50V
47pF
50V
AV2
COMP2_Y+/AV_CVBS_IN
C1702
1000pF
50V
OPT
R1720
12K
12K
AV2_L_IN
R1717
10K
10K
AV2
D1705
5.6V
COMP_LR_ZENER
AV_CVBS_DET
C1705
1000pF
50V
OPT
R1722
0
0
DTV/MNT_VOUT
R1723
75
CVBS_TEST
+3.3V_Normal
C1706
0.1uF
0.1uF
CVBS_TEST
C1707
0.1uF
CVBS_TEST
4.7uF
C1708
CVBS_TEST
JK1701
PPJ248-01
COMP_AV1/2
6D
[GN]C-SPRING
7D
[GN]E-LUG
4D
[GN]CONTACT
5E
[BL]C-SPRING
8F
[RD1]E-LUG-S
6F
[RD1]C-SPRING
4F
[RD1]CONTACT
5G
[WH1]C-SPRING
4H
[RD2]CONTACT
6H
[RD2]C-SPRING
7H
[RD2]E-LUG
7A
[YL]E-LUG
6A
[YL]C-SPRING
4A
[YL]CONTACT
5B
[WH2]C-SPRING
4C
[RD3]CONTACT
6C
[RD3]C-SPRING
7C
[RD3]E-LUG
D1711
COMP_Y_ZENER_ROHM
D1703
COMP_Pr_ZENER_ROHM
D1712
COMP_Y_ZENER_ROHM
D1714
AV2_CVBS_ZENER_ROHM
D1713
AV2_CVBS_ZENER_ROHM
D1710
COMP_Pb_ZENER_ROHM
D1708
COMP_Pb_ZENER_ROHM
D1707
COMP_Pr_ZENER_ROHM
D1714-*1
AV2_CVBS_ZENER_KEC
D1713-*1
AV2_CVBS_ZENER_KEC
D1710-*1
COMP_Pb_ZENER_KEC
D1708-*1
COMP_Pb_ZENER_KEC
D1707-*1
COMP_Pr_ZENER_KEC
D1703-*1
COMP_Pr_ZENER_KEC
D1712-*1
COMP_Y_ZENER_KEC
D1711-*1
COMP_Y_ZENER_KEC
JK1702
PPJ245-01
COMP_AV1
6A
[GN]C-SPRING
7A
[GN]E-LUG
4A
[GN]CONTACT
5B
[BL]C-SPRING
8C
[RD1]E-LUG-S
6C
[RD1]C-SPRING
4C
[RD1]CONTACT
5D
[WH]C-SPRING
4E
[RD2]CONTACT
6E
[RD2]C-SPRING
7E
[RD2]E-LUG
IC1700
MM1756DURE
CVBS_TEST
3
BIAS
2
GND
4
OUT
1
IN
6
VCC
5
PS
2012.08.14
NC4_S7LRM
REAR_NON_EU_L
COMPONENT
&
AV1
&
AV1
17
AV2
COMPONENT1 & AV(COMMON), AV2
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.
LAN
2012/06/21
21
NC4_S7LRM
EPHY_RN
EPHY_TN
EPHY_TP
JK2100
XRJV-01V-0-D12-080
ETHERNET_XMULTIPLE
1
2
3
4
5
6
7
8
9
9
+2.5V_Normal
EPHY_RP
C2104
0.01uF
50V
0.01uF
50V
ETHERNET
L2101
BLM18PG121SN1D
ETHERNET
R2101
49.9
ETHERNET
R2102
49.9
ETHERNET
C2101
0.1uF
ETHERNET
R2104
49.9
ETHERNET
C2102
0.1uF
ETHERNET
R2103
49.9
ETHERNET
JK2100-*1
RJ45VT-01SN002
ETHERNET_XML_EMI
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
ETHERNET
* H/W option : ETHERNET
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