Kalley K-LED24HDT2, Service Manual

Page: 22 / 35

D
5
4
12V TO 5V
+12V
5.24V
5VSTB U1 MP1471 L1 6.8uH
1
3
IN BST
6 C1 R1 0R 1 2
1
1UF R3
R2
SW
2
C7 C84 C6 100K
G
ND
40.2K+/-1%
5
EN FB
4
R4 24.9K+/-1% C11 CE3
+
10uF NC 0.1uF
1
NC 470uF/10V
R5 R6
300K 7.5K+/-1%
3
2
1
3.3V STANDBY
320mA Max
3.3V FOR DEMOD
320mA Max
5VSTB
5VAIN
+3V3STB
1
VCC3V3
3 IN
1
3 IN
2 OUT 4 2 OUT 4
1
C2 C3 C4 C5
0.1uF 2.2uF 1 ADJ
C8
+
CE2
0.1uF 10uF 1 ADJ
C9 C160 C10
U2 U3
0.1uF 100uF/16V 0.1uF 10uF 10uF AMS1117-3.3V AMS1117-3.3V
D
C
1.2V For Core Power
700mA Max
5VSTB
+1V2_VDDC
1
U6 SY8088AAC L2 4.7uH/1.5A
3
4
SW
1 2
IN
5
NC
R9 47K
1
G ND
R10
EN
R1
FB
6
+
CE5 C21
15K_1%
C19 C20
2
100uF/16V 0.1uF
R11 10uF 0.1uF
R2
DC-DC
13K_1%
DC-DC
Vout=0.6V*(1+R1/R2)
1.8V FOR DDR
5VAIN
1
3
IN
AVDD_DDR_1V8
173mA
C12 C13 2 OUT 4
1
0.1uF 2.2uF 1 ADJ
220R
R7
R1
C16 C17
U4
AMS1117-ADJ 0.1uF 10uF
R8
R2
100R
Vout=1.25V*(1+R2/R1)=
3.3V FOR PANEL
5VSTB
3
IN
LVDS-3V3
C22 C23 2 OUT 4
NC/0.1uF NC/2.2uF 1 ADJ
U7 C24 C25
NC/AMS1117-3.3V NC/0.1uF NC/10uF
Vout=1.25V*(1+R2/R1)=3.31V
3.3V FOR TUNER
5VAIN
1
3
IN
C14 C15 2 OUT 4
0.1uF 2.2uF 1 ADJ
U5
AMS1117-3.3V
+3V3STB
R12
1K
PWR-ON/OFF
R13
200mA Max
TUNER-3V3
1
+
C18 CE6
0.1uF 100uF/16V
100R P_ON/OFF
1
P_ON/OFF
C26
NC/10NF
C
B
A
5
1
9 5
1
9 5
1
9
4
8 4 8 4 8
3
7 3 7 3 7
2
6 2 6 2 6
H1 H3 H4
Hole/4mm Hole/4mm Hole/3.5mm
5
1
9 5
1
9
4 8 4 8 1
H20
1
H21
Mark Mark
3
7 3 7
2
6 2 6 H22
H5 H2 1 Mark
Hole/4.7mm Hole/4mm
5V_Switch
Panel Power
5VAIN
Q2
VCC-Panel SM2421
5VSTB 1 3 1 5VSTB R14 NC 1 3
1
Q1
R16 0R/0805 R21 470K C28 C29
2
SM2421
+12V
2
R15 C27 R17 0.1uF NC/2.2uF/16V
100K 1uF
R18 NC
100K
D10 1N4148 C83 1uF
LVDS-3V3
R131 NC/10K
R20
R19
+3V3STB
10K
10K
3
3
PANEL_ON/OFF PANEL_ON/OFF R22 4.7K 1 Q4
P_ON/OFF R23 10K 1 Q3
C30
2N3904
2N3904
R24
2
2
C161
10K
4.7uF
NC/100PF
Size Document Number Rev
C
SHSF3201A10-101S System Power
1
Date: Wednesday, July 30, 2014 Sheet1of9
B
A
5 4 3 2
1