TCL L40B2800 Service Manual page 24

8 7
F
BL_ON
T
POWER_ON
T
R001
POWER_ON
330R
POWER_ON_OUT
BL_ON_OUT
BL_ON
BL_ON_OUT
R004
330R C045 C001
0.01U
R003 0.01U
10K
DGND
DGND
DIM_PWM
R005 T
DIM_OUT 220R
DIM_PWM
DIM_OUT
E
R006
C002
33K
0.01U
DGND
D
12V TO 3V3
12V
R039
R032
33R
100K
U002 MP1495
C030
10U/16V
C029 5
10U/16V
6
7
R019
8
R033
C
82K
C031 82K
DGND 0.1U
C032
0.1U
R022
10K
C033
1000P
DGND
VCC=0.8(39/12.33+1)=5.24V
3V3 POWER SUPPLY
B
For +1.2V T2 DEMOD power supply
LD1117S12
3_3V
U006
VIN
3
OUT 4
2 4
C041 GND/ADJ
1
C040
10U
0.1U
A
10U/10V
DGND
DGND
8 7
6
12V TO 5V
R046
POWER_ON
1K
12V
R036
R007
33R
100K
NC
C009
10U/16V
C008 5
10U/16V
6
7
R010
R008 8
82K
C007
82K
0.1U
DGND C006
0.1U
C005
R011
1000P
10K
DGND
VCC=0.8(39/7.27+1)=5.09V
5V NORMAL POWER
Z3_3VSVB
T
C038
C047
0.1U
15P
Typ 3A
BST GND
4 L002
6.8UH
EN/SYNC SW
3
VCC IN
2
R030
FB AAM R031
1 C035
C036
R020 0R
39K
22U/6.3V 10U 0.1U
NC/10R
C034
NC/470P
R037
12K
R021 DGND
DGND
33K DGND
R038
330R
DGND
Z+1_2V_DEMOD
T
+1_2V_DEMOD
C044
22U/6.3V
C042
DGND
6
5 4
C013
C003
0.1U
15P
U000 MP1495
Typ 3A
BST GND
4
L001
6.8UH
EN/SYNC SW
3
VCC IN
2
R013
C010
FB AAM R014
1
220U C011
0R
R012
39K
10V
10U
NC/10R
C004
NC/470P
R009
R034 DGND 470R
DGND
33K DGND
R035
6K8
DGND
3_3VSB
R041
4K7
POWER_ON
LO =>Panel OFF
R042
HI =>Panel ON
3K3
3_3VSB
3_3VSB
C021
...
DD-MM ...
...
...
...
DD-MM ...
...
DD-MM ...
...
...
DD-MM
...
GJZ
Index-Lab DATE NAME DESCRIPTION
Last saved :
11-27-2014_14:07
4
5
3
MP2143
PGND
4
SW
3
(Vin=2.5V-5.5V)
5V
VIN
2
PG
1
C015 C016
10U 0.1U
5V
5V
Fixed Fsw=1.2MHZ
For timing sequence
Fixed OCP=4.2A
DGND
C012
0.1U
If Vout=1V Set R015=150K R017=4.7K R016=220K
If Vout=1.2V Set R015=150K R017=0R R016=150K
If Vout=1.5V Set R015=150K R017=8.2K R016=91K
If Vout=1.8V Set R015=150K R017=6.2K R016=68K
BOM COST=1.22RMB
If Vout=1.18V Set R015=150K R017=120k R016=33K
3_3V
T
Q001
3_3V
PMV65XP
R040
33K
C
Q002
B
BT3904
E
R043
2K7
DGND
3_3V
...
SBU :
TCLNO: 40-MS08BP-MAB2HG
...
...
DESIGNATION
...
Last modif
...........
3
2 1
For chip core power supply
F
VCCK
T
L000
1UH
VCCK
U001
@max3A
C018 C019 C020
R015 22U 22U 10U
OUT
5 150K
AGND
6
FB
7 Vref=0.6V
EN Min 1.16V/ Max 1.24V
8
DGND
R017
R018 120K
NC
510K
C017 R026 R027
1K
39K
0.1U
NC
3_3VSB
R016
E
33K
R029
VID0
Q010
4K7
2N7002K
DGND
NC
NC
DGND
D
For DDR3 power supply
1V5
AS1117AD
T
1_5V
U004
R024
330R
C
R025
68R
C027 0.1U
C028 10U
FOR DDR3 power supply
DGND
Output 1.5076V=1.25*(1+68/330) & 200mA
B
A
TCL Thomson Electronics Ltd.
B Building, TCL Tower, Nanhai Road
Nanshan District, Shenzhen, Guangdong
Tel +86-755-3331xxxx Fax +86-755-3331xxxx
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FORMAT DIN A2