LG 47LH90 Service Manual page 24
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Also See for 47LH90:
- Owner's manual (140 pages) ,
- Specifications (2 pages) ,
- Manual de usuario (128 pages)
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FROM LIPS & POWER B/D
C711
15pF
P700
FW20020-24S
NC
PWR ON
1
2
GND
GND
3
4
GND
GND
+12V
5
6
5.2V
5.2V
7
8
5.2V
5.2V
9
10
L707
GND
GND
11
12
MLB-201209-0120P-N2
12V
12V
13
14
GND
GND
15
16
OPT
C731
C728
C722
24V
24V
C720
17
18
22uF
47uF
0.1uF
0.1uF
NC
INV ON
19
20
16V
25V
A.DIM
Err OUT
OPT
21
22
NC
PWM_DIM
23
24
L700
BG2012B080TF
A_DIM
001:AF12
R704
C707
C735
4.7K
C706
16V
0.1uF
1uF
0.1uF
25V
OPT
L705
R760
BG2012B080TF
0
PWM_DIM
001:AF12
C725
R709
OPT
1uF
0
OPC_OUT1
25V
OPT
R761
001:AF12
OPT
0
+1.26 Core for Saturn6
+5V_GENERAL
465 mA @85% efficiency
+3.3V
CB3216PA501E
L711
MAX 3A
Replaced Part
R738
1/10W
OPT
10K
R731
C790
10K
Close to IC
1/10W
0.1uF
Vout=0.8*(1+R1/R2)
R736
16V
22K
1%
Close to IC
IC705
R723
1/10W
R782
MP2212DN
22K
560pF
R1
$0.07
1/10W
50V
1%
4.9A 0.0150OHM 34MHZ
OPT
FB
EN/SYNC
1
8
R722
75K
L726
R2
1/8W
3.6uH
GND
SW_2
1%
2
7
$0.24
NR8040T3R6N
Placed on SMD-TOP
IN
SW_1
3
6
D703
OPT
BS
VCC
OPT
4
5
C789
C786
C787
0.1uF
22uF
22uF
100V
50V
1N4148W_DIODES
C IN
R742
10
R724
1%
10
C788
1/10W
1uF
1%
16V
+1.26 Core for URSA
+5V_GENERAL
OPT
R716
Replaced Part
100
R2
IC708
POWER_EN
APE8953MP
EN
GND
8
1
1.5mA
POK
FB
+1.8V_MEMC
7
2
C770
C766
1uF
OPT
16V
VCNTL
VOUT_1
6
3
BLM18PG121SN1D
L719
VIN
VOUT_2
5
4
C771
C759
10uF
10uF
6.3V
6.3V
Placed on SMD-TOP
R744
1K
R1/R2 = 12K/20K => Vout=1.28
Placed on SMD-TOP
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.
+5V_+12V
+5V_ST
+3.3V_ST
L701-*1
0
R775
+3.3V_ST
RL_ON_RESISTER
0
OPT
L701
OPT
OPT
BG2012B121F
R705
R772
0
10K
POWER_ON_DELAY
RL_ON_BEAD
3
1
Q701
R703
R771
RT1P141C-T112
0
0
RL_ON
2
R708
R706
C
001:AR32
50V
33K
R702
R773
20K
0
B
10K OPT
OPT
POWER_ON/OFF
OPT
001:AR32
R701
E
Q700
120K
2SC3875S(ALY)
OPT
OPT
+5V_ST
POWER_ON_DELAY
L706
OPT
C730
C726
+24V
CB4532UK121E
22uF
220uF
16V
16V
POWER_ON/OFF
001:AR31;010:AG9
L704
CB4532UK121E
35V/8.0PI
C719
C721
C723
C727
+5V_GENERAL
0.1uF
1uF
35V/8.0PI
50V
35V
DEV.68uF
DEV.68uF
R717
+3.3V_ST
R714
3.3K
100
R720
C
R719
10K
Q702
B
10K
R715
2SC3052
6.8K
C
R713
0
OPT
E
Q708
B
INV_CTL
2SC3875S(ALY)
R753
001:AR31
10K
R721
OPT
E
OPT
10K
OPT
ERROR_OUT
R707
001:AB20
C709
4.7K
0.1uF
OPT
+1.26V_VDDC
OPT
1600 mA
3A, DCR=0.025 ohm
L717
BLM18PG121SN1D
C OUT
C793
C792
C791
0.1uF
22uF
22uF
16V
16V
Placed on SMD-TOP
+1.8V for Audio AMP
+3.3V
Replaced Part
Vout=0.8*(1+R1/R2)
IC703
AP1117E18G-13
+1.26V_MEMC
BLM18PG121SN1D
L721
IN
ADJ/GND
3
1
450 mA
C736
C716
2
10uF
0.1uF
OUT
R1
10V
16V
R752
33K
1/10W
1%
25V
0.01uF
C779
C724
10uF
6.3V
C754
C778
10uF
10uF
6.3V
6.3V
AN SO YOUNG
+12V
L708
CB3216PA501E
+5V_ST
+5V_ST
OPT
R729
10K
C742
+3.3V_ST
10uF
+5V_ST
R730
560
R747
10K
Q703
C
2SC3052
R743
0
0
B
R758
R739
C
47K
R757
R726
10K
E
0
B
2SC3052
R732
R725
Q707
22K
C761
C762
R740
120K
E
OPT
47K
4.7uF
4.7uF
OPT
6.3V
6.3V
OPT
OPT
C
R728
10K
B
Q705
2SC3052
OPT
R735
E
22K
C
R727
10K
B
Q704
PANEL_CTL
2SC3052
001:AR32
E
+3.3V
001:AR30;007:B6;007:T3;007:AG9;007:AM26;007:AO16
+5V
POWER_EN
L716
CB3216PA501E
OPT
R733
10K
Vout=0.8*(1+R1/R2)
C794
IC704
82K
R770
R741
560pF
56K
Close to IC
MP2212DN
50V
1/10W
R1
OPT
1%
FB
EN/SYNC
1
8
R769
L710
18K
R2
3.6uH
GND
SW_2
1/10W
2
7
1%
R774
NR8040T3R6N
100K
IN
SW_1
5%
3
6
D700
BS
VCC
OPT
4
5
C741
0.1uF
100V
C732
C733
1N4148W_DIODES
50V
22uF
22uF
16V
OPT
Placed on SMD-TOP
R737
10
1%
R734
10
C737
1/10W
1%
1uF
10V
50 mA
+1.8V_AMP
C729
0.1uF
16V
Stand-by +3.3V
+5V_ST
+5V
L715
CB3216PA501E
L724
CB3216PA501E
C749
C758
C756
10uF
0.1uF
16V
0.1uF
C704
Q706
10uF
SI4925BDY
+5V_GENERAL
10V
L709
S1
1
8
D1_2
CB3216PA501E
G1
2
7
D1_1
C757
C760
10uF
0.1uF
10V
16V
S2
3
6
D2_2
C752
22uF
16V
G2
4
5
D2_1
+1.8V for Saturn5 DDR
12V_TCON
+3.3V
C755
L728
C748
1uF
22uF
25V
25V
C1130
C712
10uF
10V
+5V_EXT
+12V
+3.3V
L722
+3.3V_FE
CB3216PA501E
OPT
L727
BLM18PG121SN1D
C780
0.1uF
16V
1uF
10V
C795
+3.3V_MEMC
Close to IC
R762
13K
1/8W
1%
L714
BLM18PG121SN1D
Placed on SMD-TOP
OPT
C765
C768
C751
C746
C750
C753
22uF
22uF
10uF
0.1uF
22uF
0.1uF
16V
16V
6.3V
16V
16V
Placed on SMD-TOP
+5V_GENERAL
+1.8V_MEMC for URSA DDR
415 mA @85% efficiency
+5V_EXT
Replaced Part
R763
10K
1/10W
Vout=0.8*(1+R1/R2)
Close to IC
IC707
MP2212DN
C781
R766
560pF
390K
R1
1/8W
50V
1%
OPT
FB
1
R767
300K
R2
1/8W
GND
1%
2
$0.24
IN
3
D702
OPT
BS
OPT
4
C763
C764
C IN
22uF
22uF
100V
1N4148W_DIODES
Placed on SMD-TOP
Mstar(JUPITER)
+3.3V_ST
Replaced Part
IC702
+3.3V_AVDD_MPLL
AP1117E33G-13
L703
BLM18PG121SN1D
IN
ADJ/GND
3
1
C708
C705
2
C710
C717
10uF
0.1uF
0.1uF
0.1uF
OUT
16V
6.3V
16V
16V
+1.8V_DDR
IC701
SC4215ISTRT
NC_1
GND
BLM18PG121SN1D
R711
1
8
L702
12K
1%
R710
EN
ADJ
3.3K
2
7
VIN
VO
3
6
NC_2
NC_3
R712
C714
C715
4
5
C713
9.1K
22uF
0.1uF
16V
0.1uF
1%
16V
16V
R1/R2 : 27K / 20K => Vout=1.88
R1/R2 : 15K / 12K => Vout=1.80
R1/R2 : 12K / 9.1K => Vout=1.85
OPT
R754
100
POWER_EN
001:AR30;007:B6;007:T18;007:T3;007:AG9;007:AO16
R755
10K
OPT
C772
1000pF
Close to IC
R746
R1
Close to IC
68K
IC706
MP2212DN
+5V_EXT
FB
EN/SYNC
1
8
L718
R2
3.6uH
GND
SW_2
2
7
NR8040T3R6N
IN
SW_1
C773
3
6
C774
C747
22uF
0.1uF
0.1uF
16V
16V
16V
OPT
D701
BS
VCC
3225
4
5
C718
0.1uF
100V
PI Result
50V
1N4148W_DIODES
R749
+5V_GENERAL
10
OPT
1%
1%
R748
1/10W
10
10K
1/10W
R745
C734
1uF
10V
OPT
R765
100
POWER_EN
Close to IC
R764
0
400 mA + 600 mA
$0.07
EN/SYNC
4.9A 0.0150OHM 34MHZ
8
+1.8V_MEMC
L712
3.6uH
About 1.84V
SW_2
7
NR8040T3R6N
C OUT
SW_1
6
C776
C777
22uF
22uF
VCC
16V
16V
C782
5
0.1uF
50V
R759
Placed on SMD-TOP
10
R768
1%
10
C767
1/10W
1uF
1%
16V
08.11.19
POWER
4
15
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