TCL LED28T3520, Service Manual

Page: 23 / 40

DGND
DGND
T
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
T
T
T
T
DGND
DGND
T
T
T
T
T
T
DGND
DGND
DGND
DGND
DGND
AAM
IN
SW
EN/SYNC BST FB
GND
VCC
AAM
IN
SW
EN/SYNC BST FB
GND
VCC
DGND
DGND
DGND
DGND
DGND
DGND
GND/ADJ
OUT
VIN
4
DGND
DGND
DGND
DGND
AAM
IN
SW
EN/SYNC BST FB
GND
VCC
DGND
SW
EN
COMP
FREQ GND BST
FB
VIN
DGND
DGND
DGND
DGND
DGND
GND/ADJ
OUT
VIN
4
DGND
+24V/12V
GND
DIM
GND
GND GND
+24V/12V
P_ON/OFF
+24V/12V
BL_ON/OFF
3V3STB/5VSTB
Vout=0.8(1+R817/R816)=0.8(1+470/33)=12.19V
POWER 12V THIS NO NEED
LO=>PS POWER OFF
210mA
469mA
LO=>LVDS POWER OFF
HI=>LVDS POWER ON
DIMMING NEEDED PWMOUT,NO D807 & C811
R858 IS 0OHM R856 IS 22 KOHM
HI=>PS POWER ON
VCC=0.8(1+22/3.9)=5.3V
POWER&PANEL CONTROL
CORE VCC=0.8(1+12/(20+0.68))=1.264V
VCC=0.8(1+18/(4.7+1))=3.326V
3V3STB/5VSTB
+3_3V_DC
+3_3V_DC
5VAIN
5VAIN
L819 10UH
L820
10UH
L818
10UH
+3_3VSTB
+3_3VSTB
C855
4U7
C879 220U
16V
C871 0.1U NC3
C870 10U
NC3
C866
0.1U
NC3
C878 4U7
0.1U
C845
10U
C844
0.1U
C834
C800 1U
0.1U
C819
0.1U C821
C843
220U
35V
1
2
3
4
U803
AS1117AD
C815
220U
16V
C854 220U
16V
16V
220U C842
16V
220U C859
15K
R815
IN
R811
0R 0R
R809
AVDD_DDR_1V8
+3_3V_DC
+12V
EN1
+2V5
0.01U
C832
R853
1K
NC
1 2 3
6 5 8
4
7
U808
MP1582
PWR_ON/OFF
C812
0.1U
C863
0.1U
R834 18K
R828
0R
C862
1U
R883 10K
R867 1K R866 4K7 R865 39K
R833
33K
R832
0R
1U
C873 NC3
R895 20K R894 33K
R893 30K
1 2 3
6 5 8
4
7
U806
MP1495
R831 12K
R830
82K
0.1U
C861
R814
33K
R823 39K
R812 22K
R825 220R R824 6K8
R813
0R
R822 10K R821 82K
C872
1U
+3_3V_DC
C865 100U
16V
NC2
R802 270R
0.1U
C826
+12V
5VAIN
+12V
VCC-PANEL
BRI_ADJ_PWM0
2U2
C813
10U C849
0.1U
C829
0.1U
C856
0.1U
C857
C858
0.1U
10U
C860
4
3
2
1
AS1117AD
U801
NC
0R
R806
0R
R807
NC
R869 10K
R858 330R NC
C891
1U
NC
R856
10K
NC
LL4148
D807
NC
B
C
E
Q808 BT3904
10K R839
NC
10K R878
NC3
82K R864
NC3
0.1U
C867 NC3
R863 82K
NC3
R862
100K
NC3
C868
0.1U
NC3
R855
4K7
R838 10K NC
R879 120R
0.1U C840
7
4
8 5 63
2 1
MP1495
U807
1 2 3
6 5 8
4
7
U805
MP1495
C837
0.1U
P_ON/OFF
+3_3VSTB
1K
R849
G
D
S
PMV65XP
Q813
100R R868
R857
100R
C890
22P
0.1U
C841
+3_3V_DC
5VAIN
V_AUDIO
10K R836
NC
BL_ON/OFF
NC
0R
R801
DIM
NC 0R R800
+2V5
Z808
+1V8
0R
R854
NC
+3_3VSTB
5V-DDR
+24V/12V
BL_ON/OFF
P_ON/OFF
+12V
+2V5
VCC-PANEL
VCC-PANEL
L816
392170-00X
12
4 6 8 12 10
3 5 7 9
11
P800
C848
1U
2U2
C814
0.01U C838
4U7
C808
B
C
E
BT3904
Q806
R848
4K7
+3_3V_DC
LL4148
D811
R837
100K
R877
470K
1U
C828
R841
10K
C333 100U
16V
5VAIN
+12V
+3_3VSTB
DGND
DGND DGND
DGND
VBR_OUT
BL_ON/OFF
P_ON/OFF
PANEL_ON/OFF
100K
R819
16V
100U C833
82K R820
+12V
R896 10K R892 82K
100K
R890
VDDC-1V28
82K R891
0.1U
C836
R803 0R
DIM
DIMMING
0R
R874
BL_ON/OFF
DIM
P_ON/OFF
+24V/12V
1 2 3 4 5 6 7
P801
C864
0.1U
D806 SR34
L814
10UH
COMP
BS
R817
470K
R808
24K
R816 33K
4700P C818
C820
390P
R810 220K
C822 0.1U
NC
100K
R885
0.1U C802
FB
+24V/12V
L801
30R
+12V
+12V
30R
L802
VBL_CTRL
+3_3VSTB
+24V/12V
+24V/12V
DIMMING