Read LG 37LT770H (CHASSIS:LA2FF) Service Manual online
THERMAL
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.
+24V
R9117
200K
200K
1/8W
1%
1%
P_5V
C9106
22uF
25V
22uF
25V
C9107
0.1uF
0.1uF
50V
EXT_5V
C9108
1uF
10V
1uF
10V
EXT_5V
L9101
CB3216PA501E
EXT12V_CTRL
C9111
10uF
25V
10uF
25V
EXT_5V
R9109
2.4K
2.4K
EXT_PWR_DET
P_12V
R9111
22
22
C9103
22uF
16V
22uF
16V
EXT_5V
C9102
3.3uF
50V
3.3uF
50V
P_12V
C9115
3300pF
50V
3300pF
50V
EXT_5V
R9106
10K
10K
1/16W
1%
1%
R9102
1.2K
1/16W
1.2K
1/16W
EXT_PWR_DET
R9100
18K
R9101
1K
1K
IC9103
TPS54327DDAR
EXT_5V
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
L9102
BLM18PG121SN1D
EXT_5V
R9104
43
43
R9105
100K
100K
EXT_PWR_DET
IC9101
MP5000DQ
3
ENABLE/FAULT
2
DV/DT
4
I-LIMIT
1
GND
5
NC
6
SOURCE_1
7
SOURCE_2
8
SOURCE_3
9
SOURCE_4
10
SOURCE_5
11
VCC
C9109
0.1uF
50V
50V
EXT_12V
D9100
MBRA340T3G
R9113
56K
56K
1%
EXT_5V
R9115
100
100
EXT_PWR_DET
P_12V
IC9100
APX803D29
EXT_PWR_DET
1
GND
3
VCC
2
RESET
C9110
0.1uF
50V
0.1uF
50V
R9116
12K
1%
EXT_5V
D9101
EXT_PWR_DET
A2
C
A1
R9114
20K
1/16W
1%
1/16W
1%
C9113
0.1uF
50V
R9112
11K
11K
1%
EXT_5V
IC9102
MP4460DQ-LF-Z
3
EN
2
SW_2
4
COMP
1
SW_1
5
FB
6
GND
7
FREQ
8
VIN_1
9
VIN_2
10
BST
11
EP_GND
C9112
100pF
EXT_5V
L9104
3.6uH
3.6uH
NR8040T3R6N
EXT_5V
EXT_12V
C9105
470pF
50V
470pF
50V
R9108
200
EXT_PWR_DET
EXT5V_CTRL
R9107
150K
150K
R9110
100K
100K
C9104
0.1uF
50V
EXT_5V
R9103
10K
10K
EXT_5V
L9103
CB3216PA501E
EXT_PWR_DET
R9118
270K
270K
1/16W
1%
1%
L9100
22UH
22UH
C9101
22uF
16V
22uF
16V
EXT_5V
C9100
0.1uF
16V
OPT
0.1uF
16V
OPT
C9114
150pF
50V
150pF
50V
C9118
0.1uF
EXT_5V
C9117
10uF
10V
10uF
10V
EXT_5V
L9105-*1
CIS21J121
EXT_5V_BEAD_SS
120
EXT_5V
IC9104
AP2191DSG
EXT_5V
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
C9116
22uF
16V
EXT_5V
R9119
2K
1/8W
5%
EXT_5V
R9120
2K
1/8W
5%
EXT_5V
P_5V
L9105
MLB-201209-0120P-N2
120-ohm
EXT_5V_BEAD_MAG
R9121
47
EXT_5V
R9122
10K
10K
EXT_5V
2011.02.09
xxLT760H-UA
91
5V/12V Power Out
close IC9103
close to pin
Switching noise reducing [MPS recommend]
EXTERNAL_POWER DETECTION
EXTERNAL_POWER OUT 5V/12V
$0.21
Vout=(1+R1/R2)*0.765=5.03V
$0.077
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