Read LG 47LH9000 (CHASSIS:LD91I) Service Manual online
PANEL_POWER
+5V_ST
+3.3V_ST
+12V
PANEL_CTL
001:AK10
+3.3V_AVDD_MPLL
+3.3V_ST
2SC3052
Q805
E
B
C
2SC3052
Q804
E
B
C
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.
BLM18PG121SN1D
L803
0 . 1 u F
16V
16V
C803
0 . 1 u F
16V
16V
C808
+5V_GENERAL
+5V_USB_SIDE
+12V
56K
1%
1%
R847
9.1K
R852
0 . 4 7 u F
25V
25V
C839
12.4K
1%
R853
MP2305DS
IC808
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
+3.3V
+1.8V_AMP
GND
+5V_ST
+1.8V_DDR
GND
2.2uH
L827
2.2uH
L826
10uF
C879
10uF
C878
330pF
C883
330pF
C882
56000
5%
R873
75K
5%
R874
POWER_ON/OFF1
001:AK11;008:N5;009:AG26
RSR025P03
Q806
S
D
G
+3.3V_CI
+5V_GENERAL
+12V
6.8K
OPT
R815
2SC3052
Q802
E
B
C
+24V
ERROR_OUT
+3.3V_ST
+5V_ST
INV_CTL
PWM_DIM
A_DIM
+3.3V_AVDD
+3.3V
0 . 1 u F
50V
50V
C813
+3.3V
BLM18PG121SN1D
L817
BLM18PG121SN1D
L814
BLM18PG121SN1D
L810
OPC_OUT1
1.8K
R843
8.2K
1%
R871
10.5K
1%
R809
22UH
L819
5 . 6 n F
50V
C860
AP1117E18G-13
IC803
2
OUT
3
IN
1
ADJ/GND
AP1117E33G-13
IC801
2
OUT
3
IN
1
ADJ/GND
1/10W
10
1%
R826
0 . 1 u F
C856
NR8040T3R6N
3.6uH
L813
+1.26V_VDDC
+3.3V
+5V_ST
+3.3V_ST
BLM18PG121SN1D
L821
CB3216UA121
L807
CB3216UA121
L804
CB3216UA121
L806
BLM18PG121SN1D
L805
BLM18PG121SN1D
L812
MP2212DN
IC805
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
1/8W
75K
1%
R827
22K
1%
1%
R824
4 . 7 u F
16V
C847
10uF
16V
16V
C845
OPT
100uF
16V
16V
C826
22uF
16V
16V
C858
10uF
C866
0 . 4 7 u F
25V
C891
OPC_OUT2
+3.3V_MEMC
100uF
16V
C846
0 . 1 u F
16V
16V
C855
0 . 1 u F
16V
16V
C851
100uF
16V
C854
+1.8V_FRC_DDR
SC4215ISTRT
IC807
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
1/10W
12K
1%
R838
1/10W
9.1K
1%
R840
1uF
10V
C896
0
R841
0 . 0 1 u F
25V
C841
0 . 1 u F
16V
16V
C815
0 . 1 u F
16V
C820
0 . 1 u F
16V
C865
0 . 1 u F
16V
16V
C814
0 . 1 u F
16V
16V
C812
0 . 1 u F
16V
C850
0 . 1 u F
16V
16V
C825
0 . 1 u F
16V
16V
C811
0 . 1 u F
16V
16V
C852
0 . 1 u F
16V
16V
C827
0 . 1 u F
16V
C868
0 . 1 u F
16V
16V
C877
0 . 1 u F
16V
OPT
C807
0 . 1 u F
16V
C885
0 . 1 u F
16V
16V
C859
0 . 1 u F
16V
C802
0 . 1 u F
16V
16V
C842
100
R814
100K
R848
10K
R872
10K
R821
10K
R822
10K
OPT
R823
10K
R842
10K
R836
1/16W
10K
OPT
R830
1/16W
10K
R831
10K
R833
10K
R832
OPT
10K
R800
22uF
C876
22uF
C880
1uF
6.3V
C829
22
R859
22K
R837
22K
R839
4.7K
R856
0 . 1 u F
16V
16V
C890
+5V_GENERAL
AP1117E33G-13
IC809
2
OUT
3
IN
1
ADJ/GND
+3.3V_TUNER
0 . 1 u F
16V
16V
C894
0
R806
+1.8V_DDR
+3.3V_ST
10K
R802
RT1P141C-T112
Q801
1
2
3
+5V_ST
2SC3052
Q800
E
B
C
10K
R805
33K
OPT
OPT
R807
POWER_ON/OFF1
0
OPT
R810
10K
R804
3.3K
R818
68uF
C832
35V
68uF
C821
OPT
35V
100uF
16V
C893
22uF
25V
25V
C835
22uF
C837
OPT
22uF
C838
22uF
10V
C843
22uF
10V
C849
OPT
1uF
25V
C853
470uF
16V
16V
C809
1
R811
1
R801
22uF
25V
25V
C804
12.4K
1%
R850
BLM18PG121SN1D
L815
5 . 6 n F
50V
C862
100K
R803
22uF
16V
16V
C867
9.1K
R813
0 . 1 u F
16V
C823
MP2305DS
IC810
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
0 . 4 7 u F
25V
25V
C816
22UH
L808
+3.3V_MEMC
+12V
0 . 1 u F
16V
C869
0 . 1 u F
16V
C819
10K
R844
BD9130EFJ-E2
IC802
3
ITH
2
VCC
4
GND
1
ADJ
5
PGND
6
SW
7
PVCC
8
EN
10K
1%
1%
R1
R834
2.2uH
L809
17.4K
1%
R2
R835
0 . 1 u F
16V
16V
C831
330pF
50V
C828
10uF
6.3V
C817
22uF
16V
16V
C833
18K
R829
+1.26V_MEMC
10uF
6.3V
6.3V
C830
+3.3V_MEMC
33K
1%
R849
0 . 1 u F
16V
OPT
C834
BLM18PG121SN1D
L828
OPT
BLM18PG121SN1D
L829
0 . 1 u F
16V
16V
C895
OPT
BD9150MUV
IC806
1
PGND2_1
3
PVCC_2
7
SW1_1
9
EN1
10
FB1
11
ITH1
12
AGND
13
NC
14
AVCC
15
ITH2
16
FB2
17
EN2
18
SW2_1
19
SW2_2
20
PGND2_2
5
PGND1_1
8
SW1_2
6
PGND1_2
4
PVCC_3
2
PVCC_1
1uF
6.3V
C818
4.7K
R851
BLM18PG121SN1D
L830
0 . 1 u F
16V
16V
C897
+5V_HDMI_SW
24K 1%
R825
1uF
10V
C840
BLM18SG121TN1D
L816
100uF
16V
C806
100uF
16V
16V
C800
100uF
16V
16V
C822
220uF
16V
C824
FW20020-24S
P800
19
.
14
.
9
.
4
.
18
.
13
.
8
.
3
.
17
.
12
.
7
.
2
.
16
.
11
.
6
.
1
.
20
12
15
.
10
.
5
.
21 11
22
14
23
.
24
13
0 . 1 u F
16V
16V
C884
+1.2V_TUNER
+3.3V
0 . 1 u F
16V
16V
C805
100uF
16V
16V
C810
AZ1117H-1.2TRE1
IC804
1
ADJ/GND
2
OUT
3
IN
100uF
16V
16V
C801
100uF
16V
16V
C892
0 . 1 u F
50V
50V
C848
0 . 1 u F
50V
50V
C863
0
R862
0 . 1 u F
50V
50V
C836
5 . 6 n F
50V
C870
0 . 1 u F
16V
C871
+5V_DIMMING
12.4K
1%
R891
22uF
16V
16V
C872
+12V
BLM18PG121SN1D
L841
22UH
L840
MP2305DS
IC820
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
9.1K
R893
100K
R892
0 . 1 u F
50V
50V
C873
0 . 1 u F
16V
C874
56K
1%
1%
R890
22uF
25V
25V
C875
0 . 4 7 u F
25V
25V
C898
100pF
50V
50V
C3603
OPT
ENKMC2838-T112
D801
OPT
A1
C
A2
5V
ZD801
OPT
8.2B
ZD802
OPT
8.2B
ZD803
OPT
S t a n d - b y + 3 . 3 V
C1130
8 1 3
POWER
+5V
$ 0 . 0 4 8
50 mA
450 mA
FROM LIPS & POWER B/D
+12V
S 6 c o r e 1 . 2 6 v o l t
$ 0 . 2 8
$ 0 . 0 4 8
R1
R2
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
R e p l a c e d P a r t
R e p l a c e d P a r t
R1
C l o s e t o I C
$ 0 . 0 7
C IN
465 mA @85% efficiency
C l o s e t o I C
Placed on SMD-TOP
Placed on SMD-TOP
R e p l a c e d P a r t
1600 mA
MAX 3A
$ 0 . 2 4
4.9A 0.0150OHM 34MHZ
R2
R1
R2
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
V o u t = 0 . 9 2 3 * ( 1 + R 1 / R 2 )
DEVELOPE
EAX61052801
400 mA
+1.8V_MEMC for DDR
$ 0 . 1 9 5
415 mA @85% efficiency
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
R1
R2
R 1 / R 2 : 2 7 K / 2 0 K = > V o u t = 1 . 8 8
R 1 / R 2 : 1 2 K / 9 . 1 K = > V o u t = 1 . 8 5
R 1 / R 2 : 1 5 K / 1 2 K = > V o u t = 1 . 8 0
R 1 / R 2 : 1 8 K / 1 3 K = > V o u t = 1 . 9 0
R e p l a c e d P a r t
+12V
$ 0 . 2 8
V o u t = 0 . 9 2 3 * ( 1 + R 1 / R 2 )
R1
R2
5V SEPERATE FRC WITH TUNER 5V
+ 1 . 2 6 V C o r e f o r F R C
C320 MUST BE PLACED NEAR PVCC PIN
Vout=0.8*(1+R1/R2)
$ 0 . 2 3
600mA
2 0 0 9 . 0 2 . 2 3
F o r e x t e r n a l H D D
$ 0 . 0 5
180 mA
+12V
V o u t = 0 . 9 2 3 * ( 1 + R 1 / R 2 )
$ 0 . 2 8
R1
R2
S e p e r a t e f r o m T u n e r + 5 V b a c a u s e o f R F N o i s e
POWER
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