Read LG 47LT777H (CHASSIS:LA2FZ) Service Manual online
THERMAL
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.
+5V_ST
C8916
22uF
OPT
R8936
47K
SMART_b-LAN
bLAN_POWER_MANAGE
R8924
47K
47K
SMART_b-LAN
R8932
OPT
R8933
100K
OPT
OPT
C8915
0.1uF
16V
0.1uF
16V
SMART_b-LAN
Q8905
AO3407A
SMART_b-LAN
G
D
S
Q8904
AO3407A
SMART_b-LAN
G
D
S
R8939
2.2K
2.2K
OPT
C8914
0.1uF
16V
0.1uF
16V
SMART_b-LAN
Q8902
2SC3052
SMART_b-LAN
E
B
C
+5V_ST_bLAN
R8935
47K
SMART_b-LAN
R8940
2.2K
2.2K
OPT
C8917
1uF
10V
OPT
+12V_C
bLAN_POWER_MANAGE
R8930 47K
OPT
R8928
10K
SMART_b-LAN
Q8903
2SC3052
SMART_b-LAN
E
B
C
R8926
47K
SMART_b-LAN
+12V_C_MPI
+5V_ST_bLAN
L8902
CB3216PA501E
SMART_b-LAN
R8931
22K
OPT
R8927
10K
SMART_b-LAN
+5V_bLAN
C8919
1uF
10V
SMART_b-LAN
Q8900
2SC3052
SMART_b-LAN
E
B
C
JP8920
R8925
10K
1/16W
5%
SMART_b-LAN
R8929
3.3K
SMART_b-LAN
+12V_C_MPI
+5V_bLAN_EXT
R8937
200
1W
SMART_b-LAN
R8934
200
1W
SMART_b-LAN
R8938
3.3K
SMART_b-LAN
Q8901
2N3906S-RTK
SMART_b-LAN
E
B
C
b_PTS_CTL
R8905
22
SMART_b-LAN
R8903
22
SMART_b-LAN
3305_IF_AGC
R8918
22
SMART_b-LAN
+5V_bLAN
C8909
10uF
6.3V
10uF
6.3V
OPT
R8904
22
SMART_b-LAN
SPI_DOUT
D8904
30V
SMART_b-LAN
b_PTS_CTL
C8900
27pF
50V
27pF
50V
R8902
22
SMART_b-LAN
MPI_DOUT
+5V_bLAN_EXT
C8904
2200pF
50V
50V
SMART_b-LAN
I2C_SDA6
C8903
27pF
50V
27pF
50V
JK8901
PEJ027-04
SMART_b-LAN
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
L8901
BLM18PG121SN1D
C8912
0.1uF
16V
0.1uF
16V
SMART_b-LAN
C8908
0.1uF
16V
0.1uF
16V
P8900
YFDW254-06S
bLAN D/L wafer
4
3
2
6
1
5
I2C_SCL6
R8914
22
SMART_b-LAN
C8913
10uF
10V
10uF
10V
OPT
R8922
22
SMART_b-LAN
R8912
22
R8920
22
SMART_b-LAN
MPI_DIN
D8907
30V
SMART_b-LAN
bLAN_IR_IN_MODEM
D8900
30V
SMART_b-LAN
C8906
22uF
6.3V
22uF
6.3V
OPT
D
8
9
0
9
4
0
V
K
D
R
4
1
2
SMART_b-LAN
R8908
22
SMART_b-LAN
R8917
1K
SMART_b-LAN
D8903
30V
SMART_b-LAN
D8908
30V
SMART_b-LAN
R8923
22
SMART_b-LAN
R8907
22
SMART_b-LAN
SPI_CLOCK
D8906
30V
SMART_b-LAN
R8906
22
SMART_b-LAN
R8921
22
SMART_b-LAN
L8900
SMART_b-LAN
JK8900
MJ-623PT-6-S-SD
SMART_b-LAN
1
2
3
4
5
6
7
R8911
22
+5V_TU
R8909
22
SMART_b-LAN
D8902
30V
SMART_b-LAN
C8907
27pF
50V
27pF
50V
OPT
SPI_DIN
SUB_NDIF
C8911
22uF
16V
22uF
16V
OPT
C8905
27pF
50V
27pF
50V
OPT
R8913
22
SMART_b-LAN
R8910
22
SMART_b-LAN
D
8
9
1
0
4
0
V
K
D
R
4
1
2
SMART_b-LAN
D8901
30V
SMART_b-LAN
SUB_PDIF
R8919
22
SMART_b-LAN
I2C_SCL4_blan
R8915
100
OPT
I2C_SDA4_blan
R8916
100
OPT
+12V
D8912
MBRA340T3G
SMART_b-LAN
+12V_ST
D8911
MBRA340T3G
SMART_b-LAN
+12V_C
C8918
1uF
25V
SMART_b-LAN
C8920
0.1uF
0.1uF
OPT
/TU_RESET_1
R8942
100K
OPT
R8941
100
OPT
+3.3V_TU
/TU_RESET
C8926
0.1uF
0.1uF
+3.3V_TU
R8949
100K
R8950
100
+3.3V_TU
R8945
4.7K
TUNER_SIF
Q8906
MMBT3906(NXP)
E
B
C
+5V_TU
R8943
470
R8944
82
82
C8921
0.1uF
16V
C8923
0.1uF
0.1uF
16V
C8924
0.1uF
0.1uF
16V
+1.8V_TU
L8903
BLM18PG121SN1D
C8922
100pF
100pF
50V
R8948
1K
OPT
Q8907
MMBT3906(NXP)
E
B
C
+5V_TU
R8947
220
TU_CVBS
R8946
220
R8951
100
C8927
0.1uF
16V
16V
MAIN_IF_AGC
MAIN_NDIF
MAIN_PDIF
R8958
0
TUNER
R8959
0
TUNER
R8960
0
TUNER
R8961
0
TUNER
R8962
0
TUNER
R8963
0
TUNER
R8964
0
TUNER
R8965
0
TUNER
R8966
0
TUNER
R8967
0
TUNER
D8905
CDS3C30GTH
30V
SMART_b-LAN
+1.8V_TU
+3.3V_TU
R8952
1
1
IC8900
AZ1117BH-1.8TRE1
1
ADJ/GND
2
OUT
3
IN
C8928
10uF
10V
10uF
10V
C8929
0.1uF
16V
0.1uF
16V
+1.23V_TU
R8957
10K
1%
10K
1%
R8954
10K
10K
R8956
11K
1%
11K
1%
C8937
10uF
16V
R8955
20K
1%
20K
1%
IC8901
AP2132MP-2.5TRG1
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[EP]
C8940
10uF
16V
+3.3V_TU_IN
C8939
1uF
1uF
0.1uF
C8938
+5V_NORMAL
+5V_TU
C8935
22uF
10V
+5V_NORMAL
C8934
22uF
10V
C8933
0.1uF
0.1uF
16V
R8953
0
0
C8936
0.1uF
16V
C8931
22uF
10V
C8932
0.1uF
16V
+3.3V_NORMAL
L8904
BLM18PG121SN1D
+3.3V_TU
C8930
0.1uF
16V
C8925
100pF
50V
100pF
50V
I2C_SCL4
I2C_SDA4
R8968
22
OPT
R8969
22
OPT
SUB_IF_AGC
SUB_IF_AGC
R8970
100
SMART_b-LAN
C8910
0.01uF
SMART_b-LAN
C8941
1000pF
50V
1000pF
50V
SMART_b-LAN
TU8900
TMMB-H701F
SMART_b-LAN
1
+3.3V
2
SIF
3
GND_1
4
SDA
5
CVBS
6
IF-N1
7
+1.8V
8
IF-P2
9
RESET
10
AGC1
11
GND_2
12
SCL
13
GND_3
14
IF-P1
15
GND_4
16
IF-N2
17
AGC2
18
RESET2
19
NC
20
GND_5
21
+5V
22
JP2-P1
23
JP2-P4
24
J1-P2
25
J1-P3
26
J1-P4
27
J1-P5
28
PTS
29
JP1-P3
30
JP1-P4
31
JP1-P5
40
SHIELD
32
JP1-P6
33
JP1-P7
34
JP1-P10
35
J2-P1
36
J2-P2
37
J2-P3
38
J2-P4
39
J2-P6
+5V_bLAN_PWR
TU8901
TDSS-H101F
TDSS-H101F
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+B2[1.8V]
6
SIF
12
SHIELD
A1
A1
B1
B1
BLAN CHECK
BLAN CHECK
5VST_JIG
b-LAN POWER
BLAN CHECK
5VST_JIG
12V_JIG
MPI_12V
B-Lan MPI pin3 output power(12V or 5V) control
Need to 100 oHM 2W
MPI_5V or 12V (PIN3) Select Control from b-LAN
BLAN CHECK
SMD
IR_OUT
MPI_DIN
B-Land External RJ12 jack
GND
MPI_DOUT
b-LAN
MPI_SENSE
Game_control
2011.02.09
xxLT760H-UA
89
bLAN
close to b-LAN
close to b-LAN
2012 perallel
because of derating
because of derating
close to b-LAN
should be guarded by ground
should be guarded by ground
Max 240mA
Max 0.7A
R2
Vout=0.6*(1+R1/R2)
R1
2A
Close to the b-LAN
150mA(MAX)
Close to the b-LAN
465mA(MAX)
H/NIM for Commercial (US)
should be guarded by ground
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