Haier LE48M7000A, Service Manual

Page: 26 / 61

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
BL-ADJUST
BL-ON/OFF
STANDBY
VP
STANDBY
BL-ADJUST
BL-ON/OFF
STANDBY
BL-ON/OFF
BL-ADJUST
GND
GND
GND
STANDBY
+5V_Standby
+3.3V_Standby
+12V_Normal
+5V_Normal
+2.5V_Normal
+5V_Normal
+3.3V_Normal
+12V_Normal
+5V_Standby
+5V_Normal
+12V_Normal
+5V_Normal
+5V_Standby
VP
VDDC
+12V_NORMAL
+12V_Normal +12V_Normal
+5V_Standby
+5V_Standby
+5V_Normal
+5V_Normal
+1.5V_DDR
+5V_Standby
VCC_VSENSE
+12V_NORMAL
+5V_Normal
+3.3V_Normal
+12V_Normal
+5V_Normal
VP
+5V_Standby
+5V_Normal
VID1 3 VID0 3
PWR-ON/OFF 3
VBL_CTRL 3
BRI_ADJ 3
BRT_CNTL_IN 5
BRT_CNTL_OUT 5
Title
Size Document Number Rev
Date: Sheet of
System power
1.0
MSxxx
D
2 15 Thursday, September 26, 2013
Title
Size Document Number Rev
Date: Sheet of
System power
1.0
MSxxx
D
2 15 Thursday, September 26, 2013
Title
Size Document Number Rev
Date: Sheet of
System power
1.0
MSxxx
D
2 15 Thursday, September 26, 2013
DC/DC LDO Connetor
Inverter controler
Standby controler
Test Point & MARK
500mA
320mA Max
400mA Max
Note: 靠近端子 , 减小 EMI
H :Power on
L :Power off
1.2V MAX 4A
1.164V-1.26V
oscillometer do not open LPF ,test in dtv-hd,ripple noise < 80mVp-p
1.53V
MAX 850MA
DC/DC
1.22V
!!!
至少需使用
5A DC/DC
R1
R2
Vout=0.765V*(1+R1/R2)
POWER
INPUT
H :Power on
L :Power off
调光方式
5A
1A
Vout=0.8*(1+11/12)=1.53V
R2
R1
5.15V
Vout=0.765*(1+R1/R2)
pcb layout
Vout=0.6V*(1+R1/R2)
H3 H3
1
2
3
4
5
6
7
8
9
R17 R17
C43 C43
H22 H22
1
C10 C10
CB
9
CB
9
+ CE39 + CE39
C22 C22
R26 R26
Q17 Q17 1
2
3
H15 H15 1
C25 C25
H34 H34
1
R18 R18
H5 H5 1
Q8 Q8
1
2
3
H23 H23
1
AD
J OU
T
IN
U3
AD
J OU
T
IN
U3
3 2 1
4
CN16 CN16
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
C32 C32
CP
1
0
CP
1
0
R6 R6
R154 R154
R73 R73
R44 R44
R36 R36
R1172 R1172
R21 R21
H6 H6 1
H36 H36
1
2
3
4
5
6
7
8
9
C21 C21
C41 C41
C3 C3
AD
J OU
T
IN
U2
AD
J OU
T
IN
U2
3 2 1
4
C9 C9
H35 H35
1
R43 R43
H24 H24
1
R49 R49
R74 R74
R45 R45
H7 H7 1
C216 C216
H19 H19
1
2
3
4
5
6
7
8
9
R48 R48
C44 C44
+ CE38 + CE38
C20 C20
C94 C94
CP
1
1
CP
1
1
R16 R16
CB
8
CB
8
X1 X1
1
2
3
4
5
6
7
8
9
10
L10
MPIT4018T3R3NT
L10
MPIT4018T3R3NT
C36 C36
H8 H8 1
H25 H25
1
R31 R31
U5 U5
EN
1
GN
D
2
SW
3
VIN
4
FB
5
C52 C52
H28 H28
1
R152 R152
C53 C53
C56 C56
Q46 Q46
R35 R35
R41 R41
R50 R50
H26 H26
1
U9 U9
EN
1
FB
2
VCC
8
SW
6
BST
7
GND
5
SS
4
VREG5
3
GND
9
H14 H14 1
C30 C30
H4 H4
1
2
3
4
5
6
7
8
9
H29 H29
1
C31 C31
H9 H9 1
C93 C93
H11 H11
1
R53 R53
C37 C37
L17 L17
1 2
D2 D2
C1215 C1215
H27 H27
1
C54 C54
Q45 Q45
1
2
3
C14 C14
H30 H30
1
R54 R54
C39 C39
C29 C29
L41 L41
1 2
H12 H12
1
RW22 RW22
C1216 C1216
C2 C2
H16 H16 1
H20 H20
1
2
3
4
5
6
7
8
9
R40 R40
H2 H2
1
2
3
4
5
6
7
8
9
C55 C55
Q7 Q7
1
2
3
H18 H18
1
2
3
4
5
6
7
8
9
D3 D3
R20 R20
C204 C204
H31 H31
1
C1217 C1217 C15 C15
CP
1
2
CP
1
2
H17 H17
1
R42 R42
RW25 RW25
CP
9
CP
9
C57 C57
H1 H1
1
2
3
4
5
6
7
8
9
C24 C24
C42 C42
C38 C38 + CE37 + CE37
R29 R29
H10 H10 1
C34 C34
R30 R30
R9 R9
C13 C13
H32 H32
1
C40 C40
H21 H21
1
R1171 R1171
UP3
TO-263-3/SMD
UP3
TO-263-3/SMD
AD
J
/GN
D
1
OUT
2
IN
3
H13 H13 1
C35 C35
C23 C23
R8 R8
U11 U11
EN
1
FB
2
VCC
8
SW
6
BST
7
GND
5
SS
4
VREG5
3
GND
9
C51 C51
C16 C16
R32 R32
R5 R5
RW16 RW16
J2 J2
12V
6
12V
5
BRI_ON/OFF
4
BRI_ADJ
3
GND
2
GND
1
C33 C33
H33 H33
1
R37 R37
H37 H37
1
2
3
4
5
6
7
8
9