LG 32LB520B, Руководство по обслуживанию

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5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
Test Point & MARK
Connetor
5V Standby Power(option) 3A
Vout=0.8V*(1+R1/R2)
R1
R2
Inverter controller
Power Switch
If POWER BOARD IS 5stb ONLY ,PL NOT PATCH THESE GUY.
Standby controller
H :Power on
L :Power off
3.3V Power
R2
R1
Vout=0.8V*(1+R1/R2)
Resistors close to the DC-DC
1.15V Core Power
Max :1.0A
If chip is 6306,The R2 Value is 8.2K 1%
If chip is 3393,The R2 Value is 10K 1%
NOTICE:
1.5V/1.8V Power_Normal
If chip is 3393,The R1 Value is 220R 5% Vout=1.8V
If chip is 6306,The R1 Value is 470R 5% Vout=1.5V
NOTICE:
R1
R2
Vout=1.25V*(R1+R2)/R1
BL-ON/OFF
BL-ADJUST
BL-ON/OFF
BL-ADJUST
STANDBY
STANDBY
STANDBY
+12V_PWR
+5V_Standby
+5V_Normal
+3.3V_Normal
+5V_Normal
+12V_NORMAL
+5V_Standby
+12V_PWR
+3.3V_Normal
+5V_Standby
+3.3V_Normal
+12V_PWR VDDC
+5V_Normal
+1.8V_DDR2
+12V_PWR
+12V
VBL_CTRL
BRI_ADJ
STANDBY
PWR-ON/OFF
STANDBY
STANDBY
BL-ON/OFF
BL-ADJUST
Title
v e R r e b m u N t n e m u c o D e z i S
t e e h S : e t a D of
System power
1.0
MSD3393
Custom
1 9 Friday, September 27, 2013
Title
v e R r e b m u N t n e m u c o D e z i S
t e e h S : e t a D of
System power
1.0
MSD3393
Custom
1 9 Friday, September 27, 2013
Title
v e R r e b m u N t n e m u c o D e z i S
t e e h S : e t a D of
System power
1.0
MSD3393
Custom
1 9 Friday, September 27, 2013
L1 22uH_3A
AD
J
OUT
IN
U5
AMS1117-3.3
3 2 1
4
C6
0.1uF/0402/16V
R26
220R/0402/5%/470R/0402/5%
C8
2.2nF/0402/16V
H7
NC
1
C2
10uF/16V/0805
H4
NC
1
2
3
4
5
6
7
8
9
C26
2.2uF/0603/16V
H5
NC
1
C1
0.1uF/0402/16V
R10 9.1K/0402/1%
C18
10uF/16V/0805
R7
20K/0402/5%
C11
0.1uF/0402/16V/NC
L2
22uH_3A
R1 100K/0402/5%
C4
0.1uF/0402/16V
C24
0.1uF/0402/16V
R4
4.7K/0402/5%
R14
20R/0402/5%
C17
10uF/16V/0805
R24
22K/0402/5%
Q1
3904/SOT-23
1
2
3
+
CA3
470uF/16V/EC3.5
C12
1uF/0402/16V
C19
0.1uF/0402/16V
R17
10K/0402/5%
R19
200R/0402/5%
C28
2.2uF/0603/16V
R11
4.7K/0402/5%
Q2
3904/SOT-23
1
2
3
R15
22K/0402/5%
Q3
3904/SOT-23
1
2
3
C16
10uF/16V/0805
C27
0.1uF/0402/16V
C14
10uF/16V/0805
Q4
3904/SOT-23
1
2
3
R3 27K/0402/5%
+
CA8
100uF/35V/ECS-5M
R8
10K/0402/5%
R18
4.7K/0402/1%
R23
100K/0402/5%
U1
AOZ3015PI/SOP8
EN
7
FB
5
VIN
2
AGN
D
3
PGND
1
VCC
4
Vo
8
COMP
6
LX
9
R6
100R/0402/5%
H6
NC
1
C5
1nF/0402/16V/NC
U2
4953/SOP8
S1
1
G1
2
S2
3
G2
4
D1
8
D1
7
D2
6
D2
5
R5 51K/0402/1%
R27
100R/0402/5%
U3
MP1470
FB
4
SW
2
IN
3
GND
1
EN
5
BST
6
H1
NC
1
2
3
4
5
6
7
8
9
C20
0.1uF/0402/16V
C25
2.2uF/0603/16V
R22
10K/0402/1% or 8.2K/0402/1%
C7
0.1uF/0402/16V/NC
H3
NC
1
2
3
4
5
6
7
8
9
R21
100K/0402/5%
AD
J
OUT
IN
U4
AMS1117-Adj
3 2 1
4
H2
NC
1
2
3
4
5
6
7
8
9
C13
10uF/16V/0805
C21
10pF/0402/16V
C9
0.1uF/0402/16V/NC
C3
10uF/16V/0805
R16
4.7K/0402/5%
R25
470R/0402/5%
R2
200R/0402/5%/NC
R9
22K/0402/5%
C22
2.2uF/0603/16V
R12
100K/0402/5%
C10
0.1uF/0402/16V
C23
0.1uF/0402/16V
+
CA9
200uF/35V/ECS-5M
R20
100K/0402/5%
C29
0.1uF/0402/16V
C15
10uF/16V/0805
R13
100K/0402/5%
SCHEMATIC CIRCUIT DIAGRAM