32LH70 (CHASSIS:LA92D) - LG TV Service Manual (repair manual). Page 26

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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.
POWER
12V_TCON
+5V_ST
+5V
Q806
SI4925BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
+12V
PANEL_CTL
001:AK20
+5V_ST
+5V_ST
R832
10K
OPT
R829
10K
+3.3V_AVDD_MPLL
POWER_ON/OFF
+5V_GENERAL
+3.3V_ST
R837
22K
R839
22K
R833
10K
R818
10K
R821
10K
PWM_DIM
+5V_GENERAL
R823
10K
OPT
+24V
INV_CTL
C804
1uF
25V
A_DIM
001:W12
+3.3V_ST
R822
10K
C823
1uF
25V
OPT
+1.8V_AMP
4.7K
R806
+12V
ERROR_OUT
R808
0
OPT
Q803
2SC3052
E
B
C
Q802
2SC3052
E
B
C
Q805
2SC3052
E
B
C
Q804
2SC3052
E
B
C
R835
560
R834
10K
C846
10uF
OPT
L800
BG2012B080TF
L805
BG2012B080TF
R814
100
R815
6.8K
OPT
+1.26V_VDDC
+5V_GENERAL
C826
0.1uF
50V
C818
0.1uF
50V
OPT
L803
BLM18PG121SN1D
+1.8V_MEMC
+1.26V_MEMC
C827
0.1uF
16V
C803
0.1uF
16V
C807
0.1uF
16V
OPT
C808
0.1uF
16V
C869
0.1uF
16V
C815
0.1uF
16V
0.1uF
C856
C814
0.1uF
16V
C854
0.1uF
C865
0.1uF
C862
10uF
C802
10uF
10V
L807
MLB-201209-0120P-N2
+3.3V_ST
R856
10K
IC801
AP1117E33G-13 
2
OUT
3
IN
1
ADJ/GND
R830
10K
1/10W
OPT
C837
22uF
C838
22uF
OPT
C843
22uF
16V
C849
22uF
16V
R826
10
1/10W
1%
C836
10nF
50V
+5V
C844
0.1uF
16V
+3.3V_MEMC
C852
0.1uF
16V
L814
BLM18PG121SN1D
+3.3V
C850
22uF
16V
+5V_GENERAL
R844
1K
R845
33K
1/10W
1%
R853
27K
1/10W
1%
R846
30K
1/10W
1%
OPC_OUT1
+5V_ST
+3.3V_ST
POWER_ON/OFF
R802
10K
R805
10K
C867
10uF
10V
C813
0.1uF
50V
+3.3V
R831
10K
1/10W
C812
22uF
16V
OPT
C890
22uF
16V
OPT
C820
47uF
25V
C891
0.1uF
16V
OPT
+3.3V
L813
3.6uH
NR8040T3R6N
IC803
AP1117E18G-13 
2
OUT
3
IN
1
ADJ/GND
R827
75K
1/8W
1%
OPC_OUT2
L816
BLM18SG121TN1D 
R862
47
IC805
MP2212DN
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
C816
10uF
10V
L821
BLM18PG121SN1D
C882
0.01uF
25V
0.1uF
C805
16V
OPT
C806
10uF
6.3V
C822
10uF
6.3V
C876
10uF
6.3V
C879
10uF
6.3V
C896
10uF
6.3V
C898
10uF
6.3V
0.1uF
C884
16V
OPT
C853
1uF
25V
IC804
MP2212DN
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
C829
22uF
R858
10
1/10W
1%
C830
10nF
50V
L808
3.6uH
NR8040T3R6N
R809
10K
C831
22uF
OPT
R810
47
C828
1uF
10V
C810
10uF
6.3V
R841
18K
1/10W
1%
R840
56K
1/10W
1%
D800
100V
1N4148W_DIODES 
OPT
D803
100V
1N4148W_DIODES 
OPT
GND
IC802
SC4215ISTRT
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
C883
10uF
10V
C895
0.1uF
16V
+3.3V
C877
0.1uF
16V
C897
22uF
16V
+1.8V_DDR
L820
BLM18PG121SN1D
R819
9.1K
1%
R816
12K
1%
R825
24K
1/8W
1%
R824
22K
1/10W
1%
R2618
0
R2619
OPT
C2045
1uF
35V
OPT
C2046
15pF
50V
Q800
2SC3875S(ALY)
E
B
C
R2620
120K
OPT
L804
CB4532UK121E
C832
1uF
35V
Q808
2SC3052
OPT
E
B
C
R864
10K
OPT
R865
0
C892
0.1uF
50V
R859
0
Except_OPC
R860
0
OPC_EN
R803
4.7K
L810
CB3216PA501E
Q807
2SC3052
OPT
E
B
C
+5V_ST
R866
10K
OPT
R867
0
C887
4.7uF
6.3V
OPT
C899
4.7uF
6.3V
OPT
R2621
120K
OPT
R843
47K
R842
47K
C847
4.7uF
25V
C855
22uF
16V
L817
CB3216PA501E
L818
CB3216PA501E
POWER_ON_DELAY
R868
0
OPT
RL_ON/LED_MOVING
001:AR32
R869
0
OPT
L1002
CB3216PA501E
L812
CB3216PA501E
C840
1uF
16V
R870
100
OPT
POWER_EN
C881
1uF
16V
L811
CB3216PA501E
C819
68uF
35V
C821
68uF
35V
R873
100
OPT
L824
BLM18PG121SN1D
R879
100
OPT
POWER_EN
C870
0.1uF
50V
R800
56K
1%
IC800
KA7809ERTM
2
G
3
O
1
I
C801
22uF
50V
OPT
L802
CB3216PA501E
C809
22uF
16V
C866
5600pF
50V
IC809
MP2305DS
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
C825
0.01uF
50V
C833
0.1uF
L826
22uH
R801
100K
+12V
C800
100uF
16V
C841
0.1uF
16V
L825
CB3216PA501E
+9V_GENERAL
C868
100uF
16V
C811
0.1uF
16V
C817
0.47uF
25V
C842
100uF
R812
9.1K
R817
12.4K
1%
+5V_JACK
C824
100uF
16V
C871
100uF
16V
+3.3V_FE
L815
BLM18PG121SN1D
OPT
C851
0.1uF
16V
OPT
L806
MLB-201209-0120P-N2
P800
FM20020-24
19
NC
14
12V
9
5.2V
4
18
24V
13
12V
8
5.2V
3
GND
17
24V
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
25
IC806
APE8953MP
3
VOUT_1
2
FB
4
VOUT_2
1
GND
5
VIN
6
VCNTL
7
POK
8
EN
JP811
R878
0
POWER_ON_DELAY
C845
22uF
16V
C859
560pF
50V
OPT
C893
560pF
50V
OPT
R807
33K
OPT
L801
BLM15BD121SN1 
+5V_ST
Q801
RT1P141C-T112
1
2
3
R813
3.3K
C2056
0.47uF
25V
C873
22uF
16V
L822
MLB-201209-0120P-N2
C894
10uF
C861
0.1uF
R874
10K
C874
1000pF
50V
C875
0.1uF
L809
3.6uH
+1.8V_MEMC
+12V
C857
22uF
+12V
IC807
AOZ1073AIL
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
R2622
9.1K
+5V_EXT
L819
3.6uH
+12V
C872
22uF
16V
R851
10K
1%
L823
MLB-201209-0120P-N2
C858
10uF
10V
C835
0.1uF
16V
C839
22uF
16V
0.1uF
C863
IC808
AOZ1073AIL
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
R877
9.1K
R876
10K
+12V
R849
12K
1%
R850
9.1K
1%
R847
5.6K
1/10W
1%
R872
47K
1%
R852
18K
1/10W
1%
C860
2200pF
50V
C834
3.3nF
50V
R811
6.2K
1/10W
1%
R804
12K
Stand-by +3.3V
+5V_+12V
FROM LIPS & POWER B/D
MAX 3A
+1.26 Core for Saturn6
1600 mA
465 mA @85% efficiency
Power
600 mA
+1.26V Core for URSA
+1.8V_MEMC for DDR
4    14
ATSC_VENUS
R2
R1
08.11.14
C OUT
C IN
Replaced Part
1.5mA
R1
R2
Vout=0.8*(1+R1/R2)
Placed on SMD-TOP
Placed on SMD-TOP
Placed on SMD-TOP
4.9A 0.0150OHM 34MHZ
$0.07
     mA @85% efficiency
$0.24
About 1.84V
Close to IC
Close to IC
Vout=0.8*(1+R1/R2)
R1/R2 : 27K / 20K => Vout=1.88
R1/R2 : 15K / 12K => Vout=1.80
R1/R2 : 12K / 9.1K => Vout=1.85
3A, DCR=0.025 ohm
Close to IC
R2
R1
Placed on SMD-TOP
Vout=0.8*(1+R1/R2)
+1.8V for Saturn6 DDR 
Placed on SMD-TOP
R1/R2 = 12K/20K => Vout=1.28
Placed on SMD-TOP
+3.3V
+9V and +5V for JACK B/D
+1.8V for AMP
+5V_EXT
220uF ==> 100uF*2 + 22uF for Depth
POWER_EN
DELETE CAPACITOR - VENUS
DEPTH SPEC NG
2A
1A
AN SO YOUNG
C IN
3A
3A
DELETE BEED - VENUS (DUPLICATED with L907)
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