Service Manuals, User Guides, Schematic Diagrams or docs for : KONKA LCD SEMP LCD LC3255(A)WDA LCD LC3255(A)WDA main35015914-sch-1109
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5 4 3 2 1
Power Input Power Control 5VA 33V_Normal
TEST POINT
R838
NC/1K
R821
1K
Old Power Connector
5/7 R820 VCC12V VCC-Panel 5Vstb 5VA DDR_1V8 33V_Normal VDDC
VCC12V H:OFF V803 100R BKLT_EN
F802 F5A/32V L:ON 3904
3
12VIN
XS803 R806 1
2 ON_PBACK C804 XS805 XS804
1 10K 24V 24V
D C803 0.1uF NC/D2006-14A D2006-14A D
2
0.1uF TP1 TP2 TP3 TP4 TP5 TP6 TP7
2
1 1
3
2 2
4 5Vstb
F801 F3A/32V XS801 3 3
5 5VSTBIN 5VA 33V_Normal B10P-VH
4 4
6 1 5VSTBIN
C820 5 5
7 POWER-ON/OFF 0.1uF R812 R813 BRT_CNTL 2 2 POWER-ON/OFF
NC 1K C850 6 6
3 12VIN NC/0.1uF/50V
R818 BKLT_ADJ 7 7
NC/D3913-05/07AW 470R 4
8 8
5
R822 V808 C821 C822 9 9
2 ADJ-PWM
10K 3904 10uF/16V 0.1uF 6
7
R843
R841
NC/0R
0R
24V 10 10
+3.3V Standby Power
11 11
8
12V7 9
BKLT_EN 12 12
XS809
D2006-7AW
5Vstb BKLT_ADJ 13 13 3.3Vstb
10
R847 0R 14 14 5Vstb N803
80mA
12VIN 1 BKLT_ADJ WL2004-33 2
1 BKLT_EN R849 R826 R845 NC/0R L809 OUT
2
2 BKLT_EN BKLT_ADJ 10K 1K
3
3 8PINR84110pinR843 2 1 3 IN
BKLT_ADJ 4 H:ON R841,R843 1206
4 POWER-ON/OFF R828 L:OFF FB_300_Ohm_2A C824 C825
5 GND 1
5 R814 100R C801 C828 10uF/6.3V 0.1uF
6 POWER-ON/OFF 2
POWER-ON/OFF XS808 NC/0R 10uF/16V 0.1uF
7 NC/D2006-5W C823
R825 4.7K V807 V806 0.1uF
2 PM_PWR_ON
3904 3904
H:ON
L:OFF()
C C
For single 12V 2in1 Power 5VA Power Panel Power
VCC12V L817 VCC-Panel
12V to 5Vstb R815 NC/33K
5VA
FB_60_Ohm_3A
2 1 1
V801
S D
8
2 7
R865 100K 5Vstb 5VA C857 S D
3 6
R846 470nF/10V S D
L804 V802 L802 4 5
C849 NC/0.1uF FB_60_Ohm_4A FB_60_Ohm_4A 5Vstb 5VA 47K G D C858 C826 C898
C893 0.1uF 2 1 1 8 2 1 9435A 0.1uF 10uF/16V 10uF/16V
S D R848
2 7
S D 100K
3 6
VCC12V C891 R805 S D R872
N804 4 5 R871
0.01uF C882 R866 47K C806 G D 2.2K 33V_Normal
L823 2.2K V821
FB_60_Ohm_4A 1 8 3.9nF 6.8K 470nF/10V 9435A C807
BS SS NC/PMV65XP
2 1 2 7 R808 0.1uF
IN EN 100K R854
3 6
SW COMP R867 VD503 4.7K
4 5
GND FB
3
C878 C879 C880 1K/1% LED-RG
3
V811 1 R855
MP2307
10uF/16V 10uF/16V 0.1uF R869 R868 V805 1 R816 POWER-ON/OFF H:ON 3904 4.7K
5Vstb
2
5.1K/1% 39K/1% 3904 10K L:OFF
2
L828 V812
ON_PANEL 2
L832 10uH FB_60_Ohm_4A 3904 R856 4.7K
2 1
C885
MP2307 /3A 10uF/16V C886
B
Vout=0.925*(1+R1/R2) C883
C884
+ B
10uF/16V 0.1uF C887
5V:R1/R2=4.51 10uF/16V 220uF/16V
+3.3V For Normal Power 1.86V MSD309 & DDR Power MSD309DEMO
33V_Normal 2.5V
1.86V VD805 L830
+1.32V For Mstar core
4
GR1B/1A FB_300_Ohm_2A120mA
2 1
4
R833 R834 N805
5VA NC NC
600mA
ADJ
OUT
OUT
N806 AMS1117-1.8V C888 C877
IN
AMS1117-3.3V N807
ADJ
OUT
OUT
33V_Normal DDR_1V8 NC/WL2004-25 0.1uF 10uF/6.3V
750mA
IN
IN
1
2
3
C802 0.1uF R807 2
OUT
100K
1
2
3
R810 NC/33K 5VA 33V_Normal L807 3 IN
VCC12V C836 2 1
N801
L803 10nF 1
FB_60_Ohm_3A C843 NC/0.1uF L820 FB_300_Ohm_2A C830 GND
1 8
1
BS SS C865 C831 C832 C833 C834 + C835 NC/0.1uF
2 1 2 7 2 1
IN EN C810 R804 2.2K C861 C860 +
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