Read LG 37LT640H-TA (CHASSIS:LB2AF) 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.
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.
M41T83RMY6F
IC1801
3
NF_2
2
NF_1
4
NC_2
1
NC_1
6
DU
5
RST
7
SQW
8
VBAT
9
VSS
10
SDA
11
SCL
12
IRQ1/FT/OUT
13
NC_3
14
IRQ2
15
VCC
16
NF_3
17
NV_4
18
NC_4
CLOCK_SDA
BATTERY
BA1800
1
2
+3.5V_ST
+3.5V_ST
33
R1807
1K
R1801
+3.5V_ST
22uF
16V
16V
OPT
C1811
CLOCK_SCL
33
R1808
10K
OPT
R1814
EXT_5V
0 . 1 u F
50V
POWER_OUT
C1807
150K
POWER_OUT
R1802
1/16W
270K
1%
POWER_OUT
R1816
3 . 3 u F
50V
50V
POWER_OUT
C1810
1/8W
200K
1%
POWER_OUT
R1809
EXT_12V
22uF
25V
25V
POWER_OUT
C1806
1/16W
20K
1%
POWER_OUT
R1815
MBRA340T3G
POWER_OUT
D1800
+24V
22
POWER_OUT
R1810
100K
POWER_OUT
R1804
0 . 1 u F
50V
50V
POWER_OUT
C1812
22UH
POWER_OUT
L1802
+12V
1/16W
10K
1%
POWER_OUT
R1817
THERMAL
MP4460DQ-LF-Z
POWER_OUT
IC1802
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
0 . 1 u F
50V
POWER_OUT
C1803
18K
POWER_OUT
R1800
2.4K
POWER_OUT
R1821
200
POWER_OUT
R1822
100K
POWER_OUT
R1823
0 . 1 u F
16V
16V
OPT
C1815
100
POWER_OUT
R1806
1/16W
1.2K
POWER_OUT
R1819
EXT_PWR_DET
CB3216PA501E
POWER_OUT
L1800
43
POWER_OUT
R1820
+12V
EXT_12V
0 . 1 u F
50V
50V
POWER_OUT
C1817
EXT12V_CTRL
MP5000DQ
POWER_OUT
IC1803
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
1K
POWER_OUT
R1818
CB3216PA501E
POWER_OUT
L1804
THERMAL
TPS54327DDAR
IC1800
POWER_OUT
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
0 . 1 u F
50V
POWER_OUT
C1805
12K
1%
POWER_OUT
R1805
BLM18PG121SN1D
POWER_OUT
L1803
22uF
16V
16V
POWER_OUT
C1808
56K
1%
POWER_OUT
R1811
3300pF
50V
50V
POWER_OUT
C1801
NR8040T3R6N
3.6uH
POWER_OUT
L1801
11K
1%
POWER_OUT
R1812
1uF
10V
10V
POWER_OUT
C1800
10K
POWER_OUT
R1813
22uF
16V
16V
POWER_OUT
C1804
100pF
POWER_OUT
C1814
+12V
EXT5V_CTRL
EXT_5V
10uF
25V
25V
C1816
POWER_OUT
150pF
50V
50V
POWER_OUT
C1802
0 . 1 u F
16V
16V
C1809
470pF
50V
50V
POWER_OUT
C1813
D1801
A2
C
A1
APX803D29
POWER_OUT
IC1804
1
GND
3
VCC
2
RESET
REAL TIME CLOCK(RTC)
c l o s e t o p i n
S w i t c h i n g n o i s e r e d u c i n g [ M P S r e c o m m e n d ]
EXTERNAL_POWER DETECTION
EXTERNAL_POWER OUT 5V/12V
$ 0 . 2 1
EMEA INTERACTIVE
GP4_MSTAR
2 0 1 1 . 0 8 . 2 1
EXT_POWER
1 9 2 0
Vout=(1+R1/R2)*0.765=5.03V
c l o s e I C 1 8 0 0
Click on the first or last page to see other 37LT640H-TA (CHASSIS:LB2AF) service manuals if exist.