Read LG 32LH35FD (CHASSIS:LJ91A) Service Manual 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.
POWER
BRAZIL DVR DV
2009.01.20
C873
1uF
25V
25V
C896
10uF
IC802
SC2621ASTRT
3
COMP
2
OCS
4
FB
1
BST
6
LDFB
5
LDOG
7
GND_1
8
VCC
9
NC
10
DRV
11
DL
12
GND_2
13
PN
14
DH
C882
330uF
35V
35V
6.8K
R806
C866
10uF
C806
220pF
C893
10uF
10V
10V
LH90_ONLY
L833
CB3216PA501E
L827
MLB-201209-0120P-N2
C829
330uF
4V
SANYO
C838
1uF
Q807
2SC3875S(ALY)
OPT
E
B
C
R856
1K
OPT
+5.0V
R803
1.1K
1.1K
OPT
JP1314
C881
1uF
25V
25V
OPT
C839
1uF
R829
11K
C818
10uF
10V
OPT
+12.0V_LCD
C826
10uF
16V
16V
C894
10uF
10V
10V
OPT
R851
33K
OPT
R847
4.7K
C868
0.01uF
C852
1000pF
50V
R848
100
R845
22K
C809
1uF
+3.3V_ST
L821
MLB-201209-0120P-N2
OPT
C822
470pF
C8001
0.1uF
50V
0.1uF
50V
OPT
C865
10uF
10V
10V
INV_ON/OFF
C862
3.3nF
JP1317
IC808
SI4804BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
R842
10K
OPT
R862
10K
OPT
C844
0.1uF
16V
+12.0V
C840
33uF
10V
C864
33uF
10V
C808
1uF
C880
220uF
16V
C835
0.01uF
C874
330uF
35V
C819
3.3nF
3.3K
R807
IC805
AOZ1073AIL
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
+5.0V_ST
R824
1.2K
R802
10K
1%
OPT
Q800
Si4800BDY
LH50_90_ONLY
3
S3
2
S2
4
G
1
S1
5
D5
6
D6
7
D7
8
D8
C817
0.1uF
D3.3V
C877
15pF
15pF
50V
D2.5V
D3.3V
L808
CB4532UK121E
C851
10uF
6.3V
6.3V
C870
0.1uF
0.1uF
+3.3V_ST
R838
5.6K
1%
C885
0.1uF
0.1uF
R843
10K
D3.3V
R860
0
OPC_EN
R823
1.1K
R831
15K
1%
+1.8V
C891
0.1uF
16V
0.1uF
16V
OPT
0
R853
R810
1
GND
C814
10uF
16V
C857
1uF
1uF
C869
33uF
L815
MLB-201209-0120P-N2
L830
MLB-201209-0120P-N2
OPT
L832
MLB-201209-0120P-N2
R841
18K
1%
C843
10uF
6.3V
6.3V
C849
4.7uF
OPT
C856
330pF
50V
L811
BG2012B121F
LH50_90_ONLY
L823
MLB-201209-0120P-N2
CHATTERING_BEAD
D801
1N4148W
100V
+3.3V_MEMC
C897
1uF
R852
3.3K
3.3K
C810
1uF
LVDS_PANEL_CTRL
12:I5
R811
1
JP1318
+12.0V
BCMPWM_VBR_A
L816
MLB-201209-0120P-N2
C832
10uF
6.3V
C890
0.1uF
16V
0.1uF
16V
LH90_ONLY
R849
6.8K
OPT
L806
MLB-201209-0120P-N2
R855
OPT
10K
R819
1.5K
1
%
+1.8V_MEMC
L819
0
L809
MLB-201209-0120P-N2
C820
3.3nF
L812
MLB-201209-0120P-N2
OPT
C836
10uF
6.3V
C892
0.1uF
16V
0.1uF
16V
R846
1K
ENG
C800
10uF
LH50_90_ONLY
C860
10uF
16V
JP1319
C871
22uF
22uF
16V
C876
0.1uF
50V
0.1uF
50V
OPT
R840
39K
1%
C825
10uF
6.3V
6.3V
R865
47K
C895
10uF
10V
10V
L801
2.2uH
R809
150K
1/10W
R858
22K
C823
6800pF
L826
0
R813
4.7K
4.7K
1%
OPT
R818
22K
1
%
C855
0.1uF
C884
1uF
35V
35V
R834
0
5%
C803
0.068uF
L824
MLB-201209-0120P-N2
+12.0V
R804
15K
1%
C807
2200pF
JP1321
C878
0.1uF
50V
IC804
SC4215ISTRT
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
L817
MLB-201209-0120P-N2
CHATTERING_BEAD
C879
0.1uF
16V
OPT
GND
R805
1.8K
C859
10uF
10V
10uF
10V
+5.0V
IC800
SC2621ASTRT
3
COMP
2
OCS
4
FB
1
BST
6
LDFB
5
LDOG
7
GND_1
8
VCC
9
NC
10
DRV
11
DL
12
GND_2
13
PN
14
DH
Q805
2SC3052
E
B
C
+12.0V
L803
MLB-201209-0120P-N2
C831
100uF
20V
SANYO
Q803
2SC3052
2SC3052
E
B
C
C889
330uF
4V
SANYO
C828
10uF
10uF
10V
C883
22uF
16V
22uF
16V
Q808
2SC3052
E
B
C
RL_ON
R816
10K
10K
C824
10uF
10V
OPT
+12.0V
+5.0V
DIMMING_1.8V
R859
0
D3.3V
C861
0.1uF
C872
0.1uF
50V
IC809
SI4804BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
OPC_OUT
+1.26V_MEMC
R861
0
OPC_NON
C816
0.1uF
R821
10K
R844
620
R828
330K
1/10W
C842
10uF
16V
16V
C801
10uF
10V
10uF
10V
OPT
R815
200
1%
C848
10uF
10uF
L802
2.2uH
L825
3.6uH
R808
390K
1/10W
C834
10uF
6.3V
C867
100uF
L807
CB4532UK121E
C863
470pF
470pF
C805
10uF
10V
OPT
A3.3V
C841
10uF
16V
16V
+5.0V_ST
C899
100uF
LH35_LH50_ONLY
C898
1uF
1uF
C846
0.1uF
C821
470pF
R864
47K
R832
20K
1%
L829
MLB-201209-0120P-N2
LH90_ONLY
GND
L805
MLB-201209-0120P-N2
BCMPWM_VBR_B
IC803
SC4215ISTRT
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
JP1320
L818
0
IC801
SC2621ASTRT
3
COMP
2
OCS
4
FB
1
BST
6
LDFB
5
LDOG
7
GND_1
8
VCC
9
NC
10
DRV
11
DL
12
GND_2
13
PN
14
DH
C813
1uF
1uF
25V
C850
10uF
6.3V
6.3V
D803
1N4148W
100V
GND
+5.0V_ST
R857
10K
OPT
C815
10uF
16V
A2.5V
C886
1uF
25V
OPT
JP1316
R820
10K
D805
SAM2333
ENG
A
2
[
G
N
]
C
A
1
[
R
D
]
C802
2200pF
C858
33uF
10V
R854
33K
R812
20K
1%
OPT
Q809
SI4925BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
R825
300
R817
12.4K
1%
JP1322
C833
0.01uF
R830
10K
OPT
R814
2K
1%
P800
FW20020-24S
FW20020-24S
19
NC
14
12V
9
5.2V
4
GND
18
20V
13
12V
8
5.2V
3
GND
17
20V
12
GND
7
5.2V
2
PWR ON
16
GND
11
GND
6
GND
1
NC
20
INV ON
15
GND
10
5.2V
5
GND
21
A.DIM
22
Err Out
23
NC
24
PWM DIM
3.3K
R827
C845
10uF
Q804
Si4800BDY
OPT
3
S3
2
S2
4
G
1
S1
5
D5
6
D6
7
D7
8
D8
R850
0
OPT
Q801
Si4800BDY
OPT
3
S3
2
S2
4
G
1
S1
5
D5
6
D6
7
D7
8
D8
L822
MLB-201209-0120P-N2
R822
10K
10K
C854
10uF
L831
MLB-201209-0120P-N2
R837
1
ERROR_OUT
+12.0V
C830
0.1uF
16V
0.1uF
16V
Q806
RT1P141C-T112
E
B
C
L804
CB4532UK121E
C847
10uF
10uF
L814
MLB-201209-0120P-N2
OPT
R826
10K
L813
BG2012B121F
LH50_90_ONLY
R835
0
+1.8V
D1.8V
0.1uF
C875
16V
OPT
C812
1uF
1uF
C811
1uF
C837
0.1uF
0.1uF
JP1315
L810
2.2uH
L820
MLB-201209-0120P-N2
OPT
+20.0V
D800
1N4148W
100V
+5.0V
IC807
SI4804BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
Q802
2SC3875S(ALY)
OPT
E
B
C
D1.2V
C827
470pF
R839
1K
1
%
A1.2V
C853
0.1uF
R863
120K
OPT
L817-*1
120
120
CHATTERING_120
L823-*1
120
120
CHATTERING_120
C804
10uF
LH50_90_ONLY
+1.8V_MEMC
R800
13K
LH50_90_ONLY
R801
4.7K
4.7K
LH50_90_ONLY
OPC_OUT2
001:AF12
C887
22uF
16V
22uF
16V
4
17
* +1.26V Core for FRC
* FROM LIPS & POWER B/D -->Apply changed Pin Map
must be placed with pin#8,#10 as close as possible.
must be placed with pin#8,#10 as close as possible.
use after D2.5V test
(For ENC / ENC DDR)
We’ll change SI4804 to KEC’s Product
LDO BLOCK
We have to decide whether IC803
LDO BLOCK
(For TUNER / BCM)
(For TUNER 5V)
VOUT : 2.533V
LDO BLOCK
must be placed with pin#8,#10 as close as possible.
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
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