TCL MS82B Series Service Manual page 24

BL_ON/OFF
T
BL_ON/OFF
DIM
DIM
T T P_ON/OFF
T
T
VBR_OUT
+3V3_SBY/5VMST
R854 NC
0R P800
T
DIMMING BL_ON/OFF
11 12
9 10 P_ON/OFF
DGND
3V3STB/5VSTB 7 8 3V3STB/5VSTB
DGND
5 6
DGND
P_+12V
T
R809 0R
DGND T
3 4 P_+12V
R811 0R
P_+12V 1 2
T
DGND T
T
DGND DIM P_+12V P_+12V
BL_ON/OFF
P_+12V
GND
P_ON/OFF
3V3STB/5VSTB
3V3STB/5VSTB
GND
GND
GND
P_+12V
P_+12V
P_+12V
DGND
+3_3VSTB
3V3STB/5VSTB
3.3V STB SUPPLY U801 NO NEED
+3_3VSTB
172mA
5V STB SUPPLY R881 NO NEED
T
R881 +3_3VSTB
3V3STB/5VSTB
0R
AS1117AD
U804
R844
200R
NC1
3V3STB/5VSTB
T
C824 C804 C854
C825 C847
0.1U 2U2
0.1U 220U
NC1 NC1 1U R842
16V 200R
NC1 NC1
NC1
NC1
R843
120R
DGND
NC1
DGND
POWER&PANEL CONTROL
+3_3VSTB
R849
1K
R868
PWR_ON/OFF
P_ON/OFF
100R
HI=>PS POWER ON
C838
LO=>PS POWER OFF
0.01U
DGND
5VAIN +3_3V
+3_3VSTB
HI BACKLIGHT ON
LO BACKLIGHT OFF
R860
10K R861
NC 1K
1K
R882
R853
R847 BL_ON/OFF
1K
100R
R851
VBL_CTRL C
1K Q807
B BT3904
R846
E
10K
R850
10K
NC
DGND
+3_3V
5VAIN
DIMMING NEED DC CONTROL R838&R856 IS 10K OHM DIMMING NEEDED PWMOUT,NO D807 & C811
NEED D807 C891 R856 IS 0OHM
R839
R838
10K
10K
NC
NC
NC
D807
LL4148
R856 10K DIMMING
R858
R855
C NC 330R
4K7 Q808
BRI_ADJ_PWM0
BT3904
B
C891
1U
E
NC
C890
22P
DGND
DGND DGND
R857
100R
NC
P_+12V
P_+12V Q800
1
S1
+12V 2
S2
3
S3
R816
47K
4
NC
G
3V3STB/5VSTB R813
2K2
PMK50XP
+12V NC
NC
C823 1U
R814 NC
10K
NC
R815
C
POWER_ON/OFF
10K Q802
B C124ET
NC
E
C803
4U7 R880
NC 2K2
NC
single power need
DGND
DGND
+12V
+12V
R840
R862
0R
100K
NC3
C865
C878 C866
5
100U
10U 0.1U
16V
6
7
R864
R863 8
82K
82K
C868
DGND
0.1U C867
0.1U
R878
10K
DGND
AS1117AD
U803
AVDD_DDR_1V8
5V-DDR T
+1V8
T
R872 469mA
R802
0R
+3_3V 270R
NC3
C840 C841 C848
C814
0.1U
0.1U C333
2U2
1U
100U
16V
R879
120R
R803
DGND
0R
DGND
+12V
+12V
R807
0R
R808 0R
5VAIN
5VAIN
R806
0R
NC
R837
100K
+3_3VSTB
R875 VBR_EXT R841
+3_3VSTB
0R
NC 10K
R836
10K
R848
PANEL_ON/OFF 4K7
B
HI=>LVDS POWER ON
R869
LO=>LVDS POWER OFF
10K C808
4U7
DGND
+12V
+12V
8
D1
7
D2
6
D3
5
D4
C873 VCC=0.8(1+R865/(R866+R867))=3.326V
1U
NC3
MP1495
L819
BST GND
4 22UH +3_3V
+3_3V
EN/SYNC SW
3
C874
NC_P
VCC IN 0.1U
2
DGND
FB AAM
1 R852 R865 C870 C871 C879
39K
U807 18K 18K 0.1U
10U
NC3 470U
R845
33K
R866
12K
DGND
R867
330R
DGND
AS1117AD
U801
+2V5
5VAIN
+2V5
+2V5
T
R829
NC4
220R 210mA
0R R873
+3_3V 0R R876
C829
R826
0.1U
C849
220R
NC3 10U
C826
0.1U C813
2U2
R827
0R
DGND
C827
220U
16V
VCC-PANEL
DGND VCC-PANEL
T
Q813 VCC-PANEL
PMV65XP
R877
470K
C828 1U
LL4148
D811
C
Q806
BT3904
E
+12V
VCC=0.8(1+R823/(R824+R825))=5.07V
C872
R819
R830 1U
0R
100K
MP1495
C833
L818
C834
BST GND
5 4 22UH
100U
0.1U
16V EN/SYNC SW
6 3 NC_P
C843
0.1U
VCC IN
7 2
C836
R821 FB AAM
0.1U R820 8 1 R832
82K 22K
DGND 82K U805
NC_P
C837
0.1U
DGND
R831 33K
R822
10K
DGND
CORE VCC=0.8(1+R893/(R894+R895))=1.264V
+12V
C862
R883
R890
1U
100K 0R
MP1495
C855 L820
C856 BST GND
5 4
22UH
10U
0.1U
EN/SYNC SW
6 3
C863 0.1U
VCC IN
7 2
DGND
NC_P
R892 FB AAM R885
8 1
R891
82K 12K
C857
82K U806
NC_P
DGND 0.1U
C858
0.1U
R884
R896 82K
10K
DGND
5VAIN
5VAIN
C842
R823 C844 C845
220U
39k 22K
0.1U
16V 10U
R824
6K8
DGND
R825
560R
DGND
VDDC-1V28
C859
R893
C860 C861
30K
220U
10U 0.1U
16V
R894
33K
DGND
R895
20K
DGND