DOWNLOAD LG 42LV355T-ZC (CHASSIS:LD11U) Service Manual ↓ Size: 8.8 MB | Pages: 89 in PDF or view online for FREE

Model
42LV355T-ZC (CHASSIS:LD11U)
Pages
89
Size
8.8 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lv355t-zc-chassis-ld11u.pdf
Date
PREV: LG 42LV355H-ZA (CHASSIS:LD0AZ) Service Manual

LG 42LV355T-ZC (CHASSIS:LD11U) Service Manual ▷ View online

THERMAL
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.
D2710
30V
REAR_AV
R2783
1K
D2707
5.6V
OPT
C2721
47uF
16V
R2718
75
R2754
2.2K
D2723
5.5V
EAH60667401
R2782
510
R2751 4.7K
SC1_SOG_IN
C2742
0.1uF
16V
C2733
10uF
16V
C2746
1000pF
50V
OPT
D2726
30V
AV_L_IN
SC1_CVBS_IN
L2705
120-ohm
LAN_ACTIVE_Y
R2707
75
R2726
3.9K
C2711
330pF
50V
SC1_R+/COMP1_Pr+
/RST-PHY
SC1_B+/COMP1_Pb+
R2780
10K
OPT
R2793
51K
OPT
C2706
220pF
50V
OPT
2SC3052
Q2703
R2750 4.7K
R2774
680
OPT
R2734
15K
R2752 4.7K
+3.3V_Normal
D2704
30V
C2702
220pF
50V
OPT
D2711
30V
OPT
R2756
5.6K
R2778
1K
OPT
R2794
10K
D2716
30V
OPT
C2732
0.1uF
Q2707
2SC3052
OPT
E
B
C
R2729
390
R2731
180
C2735
33pF
SC1/COMP1_DET
D2722
5.5V
EAH60667401
R2717
1K
C2710
1000pF
50V
R2701
0
@optio
C2738
10pF
50V
OPT
JK2701
PSC008-01
@optio
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
DTV/MNT_R_OUT
R2741
10
C2745
0.01uF
50V
DTV/MNT_L_OUT
C2708
330pF
50V
REAR_AV
R2784
75
R2758
470K
OPT
+12V/+15V
C2707
330pF
50V
REAR_AV
R2788
470K
R2772
560
OPT
AV_CVBS_DET
D2712
5.6V
REAR_AV
COMP2_L_IN
R2708
75
@optio
REC_8
COMP2_Pr+
COMP2_R_IN
R2705
470K
DTV/MNT_L_OUT
C2743
0.1uF
16V
+3.3V_VA
C2722
0.1uF
50V
@optio
C2719
0.1uF
16V
R2779
10K
COMP2_Pb+
Q2705
RT1P141C-T112
1
2
3
R2763
10K
R2711
10K
REAR_AV
LAN_RXP
C2724
0.1uF
50V
C2727
0.01uF
LAN_LINK_G
LAN_TXP
R2743
22K
C2704
0.1uF
16V
REAR_AV
R2709
470K
REAR_AV
D2721
5.5V
EAH60667401
R2790
0
C2701
47pF
50V
REAR_AV
SC1_FB
ET_CRS
R2728
12K
LAN_ACTIVE_Y
C2717
10uF
6.3V
OPT
+3.3V_Normal
D2727
5.6V
OPT
R2760
33K
DTV/MNT_R_OUT
R2744
22K
C2725
27pF
50V
D2713
5.6V
REAR_AV
R2757
5.6K
D2720
5.5V
EAH60667401
+3.3V_Normal
L2706
120-ohm
DTV/MNT_VOUT
L2704
120-ohm
REAR_AV
SC1_G+/COMP1_Y+
D2719
5.5V
EAH60667401
R2716
10K
REAR_AV
ET_REF_CLK_LC
C2720
0.1uF
16V
LAN_TXN
R2721
10K
D2717
30V
OPT
L2708
D2715
5.6V
OPT
R2773
10K
OPT
ET_TXD0
SCART1_Rout
C2714
4700pF
R2727
12K
SCART1_MUTE
R2722
10K
C2741
10pF
50V
OPT
R2724
22
ET_RXER
Q2702
2SC3052
E
B
C
R2759
470K
OPT
+12V/+15V
D2709
5.6V
OPT
R2789
470K
ET_TX_EN
R2703
75
C2730
5pF
50V
C2718
0.1uF
16V
R2736
2.49K
2SC3052
Q2704
+3.3V_Normal
C2715
100uF
16V
D2728
5.6V
R2747
2K
+3.3V_VA
5.6V
D2729
C2703
47pF
50V
@optio
AV_CVBS_IN
COMP2_Y+
SC1/COMP1_L_IN
C2709
1000pF
50V
D2725
30V
X2701
25MHz
R2777
1K
OPT
LAN_TXP
R2733
47K
+3.5V_ST
LAN_LINK_G
0
R2713
@optio
C2723
0.1uF
50V
R2702
75
REAR_AV
AV_R_IN
C2728
0.01uF
R2738
100
D2701
5.6V
OPT
D2702
30V
OPT
SC_RE1
C2740
10pF
50V
OPT
C2747
1000pF
50V
OPT
R2786
75
D2724
30V
R2761
33K
R2795
12K
+3.3V_Normal
LAN_TXN
R2765
10K
D2706
30V
C2736
33pF
JK2703
PPJ234-01
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
SC_RE2
R2704
75
C2729
0.1uF
16V
C2726
27pF
50V
R2730
390
R2762
10K
R2714
1K
REAR_AV
R2706
470K
R2745
2K
C2713
4700pF
R2723
15K
R2732
470
Q2706
2SC3052
OPT
E
B
C
R2796
12K
Q2701
ISA1530AC1
@optio
E
B
C
ET_MDIO
R2715
10K
REAR_AV
R2720
12K
REAR_AV
L2701
BLM18PG121SN1D
R2771
2K
OPT
C2712
330pF
50V
ET_TXD1
SCART1_Lout
C2731
10uF
6.3V
OPT
C2734
10uF
16V
+12V/+15V
R2740
1M
R2787
75
ET_MDC
R2764
10K
SC1_ID
+3.3V_Normal
JK2704
XRJV-01V-D12-180
EAG35781001
1
P1_TD+
2
P2_CT
3
P3_TD-
4
P4_RD+
5
P5_CT
6
P6_RD-
7
P7
8
P8
D1
D1
D2
D2
D3
D3
D4
D4
9
SHILED
LAN_RXP
R2712
10K
D2718
5.5V
EAH60667401
Q2708
2SC3052
OPT
E
B
C
R2710
470K
REAR_AV
JK2702
PPJ233-01
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
R2755
2.2K
D2714
5.6V
OPT
R2785
12K
OPT
LAN_RXN
C2744
0.01uF
50V
D2703
30V
OPT
ET_RXD1
DTV/MNT_L_OUT
R2737
100
+3.3V_Normal
L2702
BLM18PG121SN1D
REC_8
L2703
120-ohm
REAR_AV
R2792
10K
R2781
510
C2739
10pF
50V
OPT
D2705
30V
SC1/COMP1_R_IN
C2705
0.1uF
16V
R2719
12K
REAR_AV
COMP2_DET
DTV/MNT_R_OUT
D2708
5.6V
OPT
LAN_RXN
R2753
1.5K
R2725
75
C2716
47uF
6.3V
IC2702
AS324MTR-E1
EU_OPT_BCD
3
IN1+
2
IN1-
4
VCC
1
OUT1
6
IN2-
5
IN2+
7
OUT2
8
OUT3
9
IN3-
10
IN3+
11
GND
12
IN4+
13
IN4-
14
OUT4
IC2702-*1
SN324
EU_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
IC2701
RTL8201E-GR
1
RSET
3
MDI+[0]
7
AVDD33_1
9
RXD[0]
10
RXD[1]
11
RXD[2]
12
RXD[3]
13
RXC
14
DVDD33
15
TXC
16
TXD[0]
17
TXD[1]
18
TXD[2]
19
TXD[3]
20
TXEN
21
PHYRSTB
22
MDC
23
MDIO
24
LED0/PHYAD[0]
25
LED1/PHYAD[1]
26
CRS/RPTR/CRS_DV
27
COL/SNI
28
RXER/FXEN
29
PWOUT12D
30
AVDD33_2
31
CKXTAL1
32
CKXTAL2
5
MDI+[1]
8
RXDV
6
MDI-[1]
4
MDI-[0]
2
PWOUT12A
33
THERMAL
R2797
0
OPT
C2749
0.1uF
16V
C2750
0.1uF
16V
+3.3V_VA
C2737
0.1uF
16V
OPT
+3.3V_VA
R2749
22
ET_RXD0
R2742
22
R2739
22
R2735
4.7K
R2768
4.7K
R2767
4.7K
C2751
100pF
50V
C2752
100pF
50V
C2753
1000pF
50V
OPT
C2748
0.01uF
25V
L2709
BLM18PG121SN1D
L2710
CM2012FR10KT 
C2754
56pF
50V
ET_REF_CLK_LC
ET_REF_CLK
H : RMII MODE
L : MII MODE 
[SCART AUDIO MUTE]
COMPONENT2
[SCART PIN 8]
Rf
FOR EMI 
CLOSE TO MSTAR
IN CASE OF SMALL= 15V
ETHERNET CONTROLLER
L-MONO
FOR EMI 
Rg
FOR EMI
Rear AV
FOR EMI
ETHERNET JACK
for EMI
Gain=1+Rf/Rg
IN CASE OF SMALL= 15V
Full Scart
3216 TPYE : FOR ESD 
DVB_T2_LAN
20101023
27
GP2R
 FOR ESD 
THERMAL
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.
FE_TS_DATA[2]
FE_TS_DATA[0]
FE_TS_DATA[1]
FE_TS_DATA[3]
FE_TS_DATA[4]
FE_TS_DATA[5]
FE_TS_DATA[6]
FE_TS_DATA[7]
C2831
10uF
10V
R2816
100
+5V_TU
C2804
0.1uF
OPT
+5V_Normal
C2802
0.1uF
16V
+1.2V_TU
+5V_TU
C2824
22uF
10V
C2826
0.1uF
16V
FE_TS_VAL_ERR
R2802
0
OPT
C2832
0.1uF
R2815
10K
OPT
Q2803
2SC3052
BOOSTER_OPT
E
B
C
FE_TS_DATA[0-7]
+2.5V_TU
R2840
82
OPT
R2830
10K
BOOSTER_OPT
C2808
100pF
50V
TU_SCL
R2833
220
FE_TS_CLK
R2831
0
R2839
470
OPT
CONTROL_ATTEN
TU_SIF
L2805
BLM18PG121SN1D
R2837
10K
C2822
0.1uF
16V
C2825
22uF
16V
C2830
0.1uF
16V
C2806
100uF
16V
OPT
R2801
0
RF_SW_OPT
C2823
0.1uF
16V
TU_CVBS
R2825
2.2K
BOOSTER_OPT
IF_AGC_SEL
C2821
10uF
10V
L2804
BLM18PG121SN1D
DEMOD_SDA
C2807
100pF
50V
R2829
1
+5V_TUNER
+3.3V_Normal
R2826
4.7K
C2813
10uF
10V
OPT
+5V_TU
R2817
100K
+3.3V_TU
Q2802
ISA1530AC1
BOOSTER_OPT
E
B
C
Q2801
2SC3052
OPT
E
B
C
+3.3V_TU
R2827
4.7K
C2827
0.1uF
16V
+5V_TU
R2803
0
OPT
R2836
10K
TUNER_RESET
C2801
100pF
50V
FE_TS_SYNC
C2815
0.1uF
TU_SDA
C2809
0.1uF
16V
R2834
220
R2823
0
BOOSTER_OPT
R2838
4.7K
OPT
IC2802
AP2132MP-2.5TRG1
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[EP]
C2805
0.1uF
16V
DEMOD_RESET
C2817
0.1uF
16V
+3.3V_TU
C2828
22uF
10V
L2803
R2832
1K
OPT
Q2805
ISA1530AC1
OPT
E
B
C
C2820
0.1uF
16V
OPT
C2819
0.01uF
25V
BOOSTER_OPT
C2811
0.1uF
16V
OPT
+3.3V_TU
IF_AGC_MAIN
+3.3V_TU
+2.5V_TU
R2828
10K
BOOSTER_OPT
LNA2_CTL
C2829
0.1uF
16V
+5V_TU
+3.3V_TU
+1.2V_TU
C2810
0.1uF
16V
RF_SWITCH_CTL
L2802
BLM18PG121SN1D
BOOSTER_OPT
Q2804
ISA1530AC1
E
B
C
DEMOD_SCL
R2841
20K
1%
R2842
11K
1%
R2844
11K
1%
IF_N_MSTAR
IF_P_MSTAR
L2806
1008CS-102XJLC
L2807
270nH
L2808
270nH
C2816
62pF
50V
C2818
62pF
50V
C2833
20pF
50V
C2834
20pF
50V
C2803
0.1uF
16V
OPT
R2845
0
R2846
75
OPT
R2847
1K
OPT
R2848
0
OPT
+3.3V_TU
R2822
1.2K
R2824
1.2K
C2814
18pF
50V
C2812
18pF
50V
TU2801
TDFR-G236D
1
NC_1
2
BST_CNTL
3
+B1[5V]
4
NC_2[RF_AGC]
5
NC_3
6
SCLT
7
SDAT
8
NC_4
9
SIF
10
NC_5
11
VIDEO
12
GND
13
+B2[1.2V]
14
+B3[3.3V]
15
RESET
16
+B4[2.5V]
17
SCL
18
SDA
19
ERR
20
SYNC
21
VALID
22
MCL
23
D0
24
D1
25
D2
26
D3
27
D4
28
D5
29
D6
30
D7
31
SHIELD
C2835
10uF
OPT
R2819
22
R2818
22
IC2801
AP2114H-2.5TRG1
GND
VOUT
VIN
C2836
22uF
OPT
C2837
0.1uF
16V
C2838
10uF
AR2802
47
1/16W
AR2801
47
1/16W
AR2803
47
1/16W
MDS61887710
GAS2801
9.5T_GAS
MDS61887710
GAS2802
9.5T_GAS
MDS61887710
GAS2803
9.5T_GAS
MDS61887710
GAS2804
9.5T_GAS
LGIT CAN EU T2
R2
FE_AGC_SPEED_CTL
GPIO must be added.
Pull-up can’t be applied 
because of MODEL_OPT_2
R1
FE_BOOSTER_CTL
The pull-up/down of LNA2_CTL 
is depended on MODLE_OPT_1.
GPIO must be added for FE_BOOSTER_CTL
close to TUNER
This was being applied to the only china demod,
so this has to be deleted in both main and ISDB sheet. 
OPTION : RF AGC
Vo=0.8*(1+R1/R2)
Close to the CI Slot
close to Tuner
60mA
close to TUNER
380mA
should be guarded by ground
200mA
DVB_T2_TUNER
20101023
28
GP2R
close to TUNER
close to TUNER
LCD TV Repair Guide
`11 years New Basic Models
Contents
1. Product Roadmap 
2. Main PCB layout
3. Interconnection
4. Standard Repair Process
LCD TV EU Group
LCD TV Research Department
Apr. 18
th
,  2011
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