5
4
3
2
1
12V TO 5V
3.3V STANDBY
320mA Max
3.3V FOR DEMOD
320mA Max
+12V
5.24V
5VSTB
U1
MP1471
L1
6.8UH
5VSTB
5VAIN
+3V3STB
1
1
1
VCC3V3
D
3
IN
BST
6
C1
R1
0R
1
2
3
IN
1
3
IN
D
R2
1UF
R3
1
2
OUT
4
2
OUT
4
SW
2
C2
C3
C4
C5
0.1uF
2.2uF
1
ADJ
0.1uF
10uF
1
ADJ
C7
C84
C6
100K
G
ND
40.2K+/-1%
C8
+
CE2
C9
C160 C10
5
4
R4
24.9K+/-1%
C11
CE3
U2
U3
EN
FB
0.1uF
100uF/16V
0.1uF 10uF 10uF
+
AMS1117-3.3V
AMS1117-3.3V
10uF
NC
0.1uF
1
NC
470uF/10V
R5
R6
300K
7.5K+/-1%
1.8V FOR DDR
3.3V FOR TUNER
200mA Max
5VAIN
5VAIN
3
IN
173mA
AVDD_DDR_1V8
3
IN
TUNER-3V3
C12
C13
2
OUT
4
1
C14
C15
2
OUT
4
1
0.1uF
2.2uF
1
ADJ
220R
R7
R1
C16
C17
0.1uF
2.2uF
1
ADJ
+
CE6
U4
U5
C18
AMS1117-ADJ
0.1uF
10uF
AMS1117-3.3V
0.1uF
100uF/16V
1.2V For Core Power
R8
R2
100R
700mA Max
Vout=1.25V*(1+R2/R1)
C
C
5VSTB
/
+1V2_VDDC
U6
SY8088AAC
L2
4.7uH/1.5A
3
4
SW
1
2
3.3V FOR PANEL
IN
5
NC
R9
47K
1
EN
G
ND
R1
R10
+3V3STB
6
FB
15K_1%
+
CE5
C21
5VSTB
2
C19
C20
100uF/16V
0.1uF
R12
R11
LVDS-3V3
10uF
0.1uF
R2
3
IN
1K
DC-DC
DC-DC
13K_1%
2
4
C22
C23
OUT
R13
P_ON/OFF
PWR-ON/OFF
100R
P_ON/OFF
NC/0.1uF NC/2.2uF
1
ADJ
Vout=0.6V*(1+R1/R2)
U7
C24
C25
C26
NC
NC/0.1uF
NC/10uF
NC/10NF
Vout=1.25V*(1+R2/R1)=3.31V
B
5V_Switch
Panel Power
B
5
1
9
5
1
9
5
1
9
5VAIN
Q2
VCC-Panel
AP3401
4
8
4
8
4
8
5VSTB
1
3
1
5VSTB
R14
0R/0805
1
3
1
3
7
3
7
3
7
Q1
2
6
2
6
2
6
R15
C27
2
AO3401
+12V
R16
NC
R17
2
R21
470K
C28
C29
0.1uF
NC/2.2uF/16V
H1
H3
H4
100K
1uF
R18
NC
100K
D10
1N4148 C83 1uF
Hole/4mm
孔径
Hole/4mm
孔径
Hole/3.5mm
孔径
LVDS-3V3
R131
NC/10K
R20
R19
+3V3STB
4.7K
5
1
9
5
1
9
10K
3
H20
H21
4
8
4
8
1
1
3
PANEL_ON/OFF
R22
4.7K
Q4
Mark
Mark
PANEL_ON/OFF
1
P_ON/OFF
R23
10K
1
Q3
3
7
3
7
C30
2N3904
2N3904
2
R24
2
6
2
6
2
H22
10K
H5
H2
1
Mark
C161
4.7uF
Hole/4.7mm
孔径
Hole/4mm
孔径
NC/100PF
A
A
Size
Document Number
Rev
C
System Power
1
Date:
Thursday, November 12, 2015
Sheet
1
of
9
5
4
3
2
1
Summary of Contents for K-LED32HDXDT2
Page 21: ...Date Thursday November 12 2015 Sheet 2 of 9 5 4 3 2 1...
Page 30: ...1 No power No power LED RC or Key can not turn on TV Power LED no light no change...
Page 31: ...2 No Display Black Panel Back light is OK sound is OK but no picture...
Page 32: ...3 No back light Power LED logic OK sound OK but no picture Different from No Display...
Page 33: ...4 No sound One or all signal source without sound...
Page 34: ...5 Signal source no function One or several source no function...
Page 35: ...6 Abnormal Display OSD NG or picture NG...
Page 36: ...7 No tuning channels DTV or ATV no Channels...
Page 37: ......