Read LG 32LH70YD (CHASSIS:LJ91D) 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
BCM (BRAZIL VENUS)
08.10.16
R823
1K
OPT
IC805
AOZ1073AIL
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
L815
3.6uH
RL_ON
12:I5;14:E5
+3.3V_ST
C846
330pF
50V
INV_ON/OFF
12:I5
D803
1N4148W
100V
3.3K
R832
C815
2200pF
IC802
AZ1085S-ADJTR/E1
1
ADJ/GND
2
OUTPUT
3
INPUT
R843
10K
C801
10uF
10uF
16V
R810
22K
R813
47K
L807
CB4532UK121E
+5.0V
12:A3;2:Y20;2:Z10;B3;C6;H5;7:A3;14:I7;14:J1
R853
300
C838
1uF
1uF
25V
3.3K
R873
A_DIM
9:G6;9:I3
C895
0.1uF
50V
0.1uF
50V
TruMotion_240Hz
C868
10uF
10uF
10V
C
8
8
2
1
0
u
F
6
.
3
V
D1.8V
R864
620
R854
10K
C821
0.068uF
R812
47K
R824
10K
10K
22uF
C819
16V
C876
100uF
16V
16V
0.1uF
C808
16V
OPT
C3007
10uF
6.3V
R870
10K
10K
OPT
L817
2.2uH
C896
22uF
22uF
16V
C840
1000pF
50V
L826
BG2012B080TF
Q812
SI4804BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
C1807
0.1uF
R855
12.4K
1%
C870
0.1uF
16V
0.1uF
16V
PWM_DIM
9:G7;9:I3;7:I5
Q806
2SC3052
2SC3052
E
B
C
R840
39K
C824
0.1uF
50V
50V
OPT
C851
470pF
IC803
SC4215ISTRT
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
22uF
C842
16V
+12V
R835
0
+1.8V_MEMC
R872
1.2K
C883
100uF
16V
+3.3V_MEMC
D1.2V
R811
22K
R805
10K
10K
R849
10K
R3025
0
C803
0.1uF
16V
0.1uF
16V
C817
4.7uF
4.7uF
25V
OPT
R833
390K
1/8W
C885
33uF
C1802
10uF
25V
D805
SAM2333
OPT
A
2
[
G
N
]
C
A
1
[
R
D
]
C826
47uF
25V
C845
0.1uF
50V
R827
10K
OPT
C878
0.1uF
+12V
12:A3;A6;B5;F7;G7;I2;14:B2
IC807
SC4215ISTRT
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
R869
0
Except_OPC
R828
10K
OPT
C820
15pF
15pF
50V
C836
0.1uF
C832
1uF
25V
+5.0V
C829
1uF
25V
25V
OPT
R845
15K
C856
6800pF
L804
BG2012B080TF
R841
18K
A2.5V
+5.0V
C811
0.1uF
C830
2200pF
Q903
2SC3875S(ALY)
OPT
E
B
C
Q802
2SC3052
E
B
C
C844
0.1uF
R816
6.8K
OPT
C1804
470pF
R807
0
OPT
Q807
2SC3875S(ALY)
OPT
E
B
C
C
8
8
1
1
0
u
F
6
.
3
V
R826
10K
10K
OPT
R844
11K
R821
1.8K
C859
0.1uF
0.1uF
+3.3V_VDDP_ST
D2.5V
L812
MLB-201209-0120P-N2
L801
CB3216PA501E
C1805
1uF
25V
L828
2.2uH
R829
0
+3.3V_ST
C899
100uF
16V
C814
0.1uF
16V
C1806
1uF
25V
R842
2K
P801
FM20020-24
FM20020-24
19
N.C
14
12V
9
5.2V
4
GND
18
24V
13
12V
8
5.2V
3
GND
17
24V
12
GND
7
5.2V
2
POWER_ON
16
GND
11
GND
6
GND
1
N.C
20
Inverter_On
15
GND
10
5.2V
5
GND
21
A.Dim
22
Error_Out
23
N.C
24
PWM_Dim
25
GND
+3.3V_ST
IC801
AZ1117D-3.3TRE1
1
ADJ/GND
2
OUTPUT
3
INPUT
+5V_ST
C1809
10uF
25V
C807
68uF
35V
C
8
5
2
1
0
u
F
6
.
3
V
R806
10K
OPT
D3.3V
R825
66.5
66.5
1%
C1800
1uF
25V
C806
0.1uF
16V
OPT
C877
0.1uF
16V
C812
0.1uF
50V
0.1uF
50V
D3.3V
C887
0.1uF
C886
0.1uF
D3.3V
R874
1.1K
C835
1uF
1uF
25V
C
8
6
1
0
.
0
1
u
F
C3010
10uF
6.3V
Q804
SI4925BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
Q809
SI4804BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
C
8
8
4
0
.
0
1
u
F
D802
1N4148W
100V
L819
2.2uH
+12V
C860
10uF
16V
16V
+5V_ST
C1801
0.01uF
Q803
2SC3052
2SC3052
E
B
C
D801
1N4148W
100V
C872
1uF
25V
C804
1uF
50V
1uF
50V
IC806
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
PANEL_CTL
12:I5
C3011
10uF
6.3V
R
8
4
6
1
K
OPT
+5V_ST
ERROR_OUT
12:F6
R852
10K
10K
R857
56
56
1%
OPC_OUT1
7:I5
C805
1uF
25V
25V
C822
0.1uF
C1803
33uF
10V
A3.3V
C880
470pF
C875
10uF
6.3V
C825
220pF
C828
0.1uF
50V
R830
0
0
A1.2V
+12V
C3009
1uF
25V
25V
IC809
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
R822
0
OPC_EN
C839
22uF
16V
+1.8V_MEMC
+12V
12:A3;A6;C4;F7;G7;I2;14:B2
C818
330uF
4V
R871
20K
C862
470pF
C888
33uF
10V
C873
1uF
1uF
25V
C833
22uF
25V
22uF
25V
+12V
C894
0.1uF
16V
6.8K
R831
C841
10uF
+24V
+1.26V_MEMC
+5.0V
C827
100uF
R848
1.5K
R818
3.3K
3.3K
R801
4.7K
C810
22uF
16V
+5V_ST
C853
10uF
16V
16V
R819
56
1%
C837
1uF
25V
R862
5.6K
C863
10uF
16V
16V
R856
22K
L808
MLB-201209-0120P-N2
IC804
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
Q810
SI4804BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
R815
100
12V_TCON
7:I5;7:I7
C898
1uF
25V
R859
330K
1/10W
R814
15K
1%
C802
68uF
35V
35V
R847
200
R863
1K
C3013
10uF
6.3V
C858
33uF
10V
10V
C3014
10uF
6.3V
R3028
1K
OPT
LD1
SAM2333
OPT
A2[GN]
C
A1[RD]
0
R802
R3032
0
R3033
0
R834
150K
1/10W
Q805
RT1P141C-T112
E
B
C
R817
33K
OPT
R820
33K
C3017
10uF
6.3V
10uF
6.3V
C1808
100uF
16V
C865
10uF
6.3V
C854
330uF
4V
JP1111
C3021
10uF
10uF
C855
10uF
6.3V
6.3V
C3022
0.1uF
50V
0.1uF
50V
OPT
C3023
0.1uF
50V
0.1uF
50V
OPT
L805
CB4532UK121E
R861
3.3
R837
3.3
R836
3.3
C879
470pF
C848
470pF
C847
470pF
L
8
2
4
M
L
B
-
2
0
1
2
0
9
-
0
1
2
0
P
-
N
2
L829
MLB-201209-0120P-N2
L822
MLB-201209-0120P-N2
L830
MLB-201209-0120P-N2
L827
MLB-201209-0120P-N2
L813
MLB-201209-0120P-N2
L806
MLB-201209-0120P-N2
L821
MLB-201209-0120P-N2
L811
MLB-201209-0120P-N2
L8012
MLB-201209-0120P-N2
15
4
AN SO YOUNG
* FROM LIPS & POWER B/D -->Apply changed Pin Map
220uF ==> 100uF*2 + 22uF for Depth
600 mA
must be placed with pin#8,#10 as close as possible.
VOUT : 2.533V
400 mA + 600 mA
FLASH, A1.2, +1.8_DDR_BCM3556, VTT
R1
750 mA
* +5v_ST to +3.3V_ST
We’ll change SI4804 to KEC’s Product
415 mA @85% efficiency
R2
* +1.26V Core for FRC
* +1.8V_MEMC for FRC DDR
1.8V_BCM3556
* +5.0V to 1.2V
must be placed with pin#8,#10 as close as possible.
* +12v -> PANEL_POWER
* +12V to +5.0V
* D1.8V
Vout = (1+R2/R1)*1.25
Click on the first or last page to see other 32LH70YD (CHASSIS:LJ91D) service manuals if exist.