Read LG 47LF11 (CHASSIS:LA92G) 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.
0
OPT
R773
1N4148W_DIODES
100V
OPT
D702
1/10W
56K
1%
R770
BLM18PG121SN1D
L717
+1.26V_MEMC
9.1K
1%
R712
1N4148W_DIODES
100V
D700
OPT
POWER_ON/OFF
001:AR32
+3.3V_AVDD_MPLL
2SC3052
Q705
E
B
C
22uF
C764
OPT
+5V_GENERAL
2SC3875S
Q701
E
B
C
10K
R726
0.1uF 16V
C746
100
OPT
R765
BLM18PG121SN1D
L720
+5V
0
R713
22uF
C733
OPT
1/10W
10K
R738
CB3216PA501E
L715
+3.3V_ST
1K
R705
OPT
22uF
16V
C777
1/8W
75K
1%
R722
CB3216PA501E
L708
CB4532UK121E
L706
22uF
16V
C791
POWER_EN
0.1uF
50V
OPT
C720
10uF
6.3V
C751
+24V
1uF
10V
C737
10K
R733
4.7uF
6.3V
OPT
C761
CB3216PA501E
L716
0.1uF
16V
C760
0.1uF
16V
OPT
C709
1/10W
10
1%
R734
1/10W
22K
1%
R723
22uF
C763
10uF
6.3V
C754
VLCD_LCM
0.01uF
25V
C779
+5V_GENERAL
OPT
C766
10K
R728
OPT
10K
R710
10uF
10V
C704
2SC3875S
Q700
E
B
C
15pF
50V
C711
+5V_ST
0
R743
PANEL_CTL
001:AR32
0
R771
0
Except_OPC
R760
+1.8V_MEMC
1K
R744
1uF
25V OPT
C725
+3.3V_MEMC
1uF
16V
C767
POWER_EN
+3.3V
0.1uF
50V
C728
10uF
6.3V
C771
0.1uF
16V
C753
10uF
C756
560
R730
220uF
16V
C726
0.1uF
16V
C705
0
R703
OPT
10nF
50V
C741
+3.3V
0.1uF
16V
C780
+5V_ST
4.7K
R704
0.1uF
16V
C715
1/10W
33K
1%
R752
10uF
10V
C712
0
R764
10uF
6.3V
C778
22K
R732
+1.8V_MEMC
AP1117E33G-13
IC702
2
OUT
3
IN
1
ADJ/GND
POWER_EN
001:AR30;007:B6;007:T3;007:AG9;007:AM26;007:AO16
1/10W
10K
OPT
R731
120K
R725
OPT
A_DIM 001:AF12
22uF
16V
C792
BLM18PG121SN1D
L703
+3.3V_ST
+5V_ST
+3.3V_FE
100
OPT
R756
+1.26V_VDDC
22uF
C787
OPT
10K
OPT
R753
10K
OPT
R747
NR8040T3R6N
3.6uH
L712
0.1uF
16V
C758
2SC3052
Q703
E
B
C
MP2212DN
IC705
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
22K
R735
0.1uF
16V
OPT
C790
100
R714
0.1uF
C749
22uF 16V
C750
POWER_ON_DELAY
22uF
25V
C748
+12V
10K
R706
BLM18PG121SN1D
L727
OPT
CB3216PA501E
L724
100uF
16V
OPT
C745
+5V_EXT
+5V_ST
1K
R708
BG2012B080TF
L705
MP2212DN
IC704
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
47K
R739
+3.3V_ST
1/10W
18K
1%
R769
1/10W
10K
R763
10uF
6.3V
C708
2SC3052
Q702
E
B
C
1/10W
10
1%
R724
MP2212DN
IC707
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
POWER_ON/OFF 001:AR31;010:AG9
10K
R727
1N4148W_DIODES
100V
D703
OPT
10nF
50V
C789
10K
R729
10uF
10V
C757
0
OPT
R772
NR8040T3R6N
3.6uH
L726
22uF
16V
C732
1/8W
300K
1%
R767
22uF
16V
OPT
C731
47K
R740
SI4925BDY
Q706
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
22uF
C786
1/10W
30K
1%
R750
1uF
25V
C706
+3.3V_ST
47
R759
+3.3V
0
R709
OPT
120K
OPT
R701
1uF
35V
C744
OPT
12K
1%
R711
1uF
16V
C770
1/10W
27K
1%
R751
BLM18PG121SN1D
L702
100
OPT
R716
10K
R718
4.7uF
6.3V
OPT
C762
NR8040T3R6N
3.6uH
L710
ERROR_OUT
001:AB20
SC4215ISTRT
IC701
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
6.8K
OPT
R715
1uF
16V
C788
10K
OPT
R721
1/10W
10
1%
R768
PWM_DIM
001:AF12
22uF
16V
OPT
C730
47
R737
10uF
C742
OPT
0.1uF
50V
C735
0.1uF
16V
OPT
C707
+5V_ST
+5V_GENERAL
22uF
16V
C714
2SC3875S
OPT
Q708
E
B
C
+5V_ST
+3.3V_ST
10K
R719
4.7K
R707
10K
R702
47uF
25V
C722
2SC3052
OPT
Q707
E
B
C
0.1uF
50V
C719
1uF
25V
C755
47
R742
BLM18PG121SN1D
L714
CB3216PA501E
L709
MLB-201209-0120P-N2
L707
CIC21J501NE
L725
+1.8V_DDR
BG2012B080TF
L700
1/8W
390K
1%
R766
0.1uF
C793
22uF 16V
C752
CB3216PA501E
L711
+5V_GENERAL
BG2012B121F
L701
+12V
0.1uF
16V
C710
BLM18PG121SN1D
L719
1uF
35V
C723
10uF
6.3V
C759
CB4532UK121E
L704
+5V
0.1uF
16V
C717
22uF
16V
C776
INV_CTL
001:AR31
2SC3052
Q704
E
B
C
0.1uF
16V
C713
10nF
50V
R781
10K
R720
68uF
35V
C721
68uF
35V
C727
4.7uF
25V
C740
FW20020-24S
P700
19
NC
14
12V
9
5.2V
4
GND
18
24V
13
12V
8
5.2V
3
GND
17
12
GND
7
5.2V
2
PWR ON
16
GND
11
GND
6
GND
1
NC
20
15
GND
10
5.2V
5
GND
21
22
23
NC
24
PWM_DIM
1/10W
10
1%
R745
0.1uF
16V
C783
10uF
10V
C784
1000pF
OPT
C772
0.1uF
16V
C747
22uF
16V
C768
OPT
68K
R746
MP2212DN
IC706
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
+5V_GENERAL
1N4148W_DIODES
100V
D701
OPT
+5V_EXT
10nF
50V
C718
NR8040T3R6N
3.6uH
L718
1/10W
10K
R748
22uF
16V
C765
CB3216PA501E
L722
1uF
10V
C734
3225
22uF
16V
C773
+12V
1/8W
13K
1%
R762
47
R749
POWER_EN
001:AR30;007:B6;007:T18;007:T3;007:AG9;007:AO16
+5V_EXT
0.1uF
16V
C774
CB3216PA501E
L713
OPT
+5V_GENERAL
100
R754
OPT
1uF
10V
C782
L728
APE8953MP
IC708
3
VOUT_1
2
FB
4
VOUT_2
1
GND
5
VIN
6
VCNTL
7
POK
8
EN
1/8W
24K
1
%
R736
3.3K
R717
POWER_ON_DELAY
0
R757
OPT
0
R758
RL_ON
001:AR32
R1
Placed on SMD-TOP
+5V_EXT
3A, DCR=0.025 ohm
+1.8V for Saturn5 DDR
Vout=0.8*(1+R1/R2)
1600 mA
Vout=0.8*(1+R1/R2)
Stand-by +3.3V
$0.07
465 mA @85% efficiency
Close to IC
FROM LIPS & POWER B/D
+1.8V_MEMC for URSA DDR
MAX 3A
Vout=0.8*(1+R1/R2)
4.9A 0.0150OHM 34MHZ
450 mA
R1/R2 : 12K / 9.1K => Vout=1.85
R2
R1/R2 : 15K / 12K => Vout=1.80
Close to IC
Placed on SMD-TOP
C OUT
$0.07
R1/R2 = 12K/20K => Vout=1.28
R2
+5V_+12V
Close to IC
415 mA @85% efficiency
A.DIM
Placed on SMD-TOP
+1.26 Core for Saturn5
$0.24
C IN
+3.3V
About 1.84V
Placed on SMD-TOP
Close to IC
R1/R2 : 27K / 20K => Vout=1.88
C IN
R1
Err OUT
Placed on SMD-TOP
R2
C OUT
R1
24V
Placed on SMD-TOP
+1.26 Core for URSA
R2
Placed on SMD-TOP
4.9A 0.0150OHM 34MHZ
Vout=0.8*(1+R1/R2)
R1
INV ON
Close to IC
Placed on SMD-TOP
400 mA + 600 mA
1.5mA
PI Result
R2
R1
Close to IC
Close to IC
Close to IC
Placed on SMD-TOP
35V/8.0PI
C
2009
POWER
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