Haier LTF47K1 Service Manual page 57

42"&47" LCD TV
2) Power-2
+5V_SW AV33
U151
LD1117DT33TR
3 2
VIN VOUT
C166 C159
+
100uF 10V
100N 16V
+5V_SW TO AV33
Add Thermal Pad
+5V_SW AV25
U153
LD1117ADT-TR
3 2
VIN VOUT
C169 R152 + C161
100N 16V 100uF 10V
SMD/0402
R151
C168 120R 1% 1/10W
10U 10V
Vo=1.25 x (1+120R/120R) = 2.5V
+5V_SW TO AV25
+5V_SW
LD1117S33TR
DV33
U156
3 2
VI VO
+ C150
100uF 10V
C158
100N 16V
+5V_SW TO DV33
DV33 DV18_CI
U158 LD1117S18
3 2
VI VO
C173
100N 16V C175
SMD/0402 10U 10V
DV33 TO DV18_CI
Panel VCC=5V
NC/0R05 1/8W
+5V_STB DV33SB
C172 NEARLY U155
U152
AME8810-AEGTZ 0.6A/3.3V
3 2
VIN VOUT(heat sink)
C155 PANEL_VCC_ON/OFF
C151
100N 16V 10U 10V
+5V_STB TO DV33SB
AV25 AV12
LD1117S-TR
U154
3 2 R162
VIN VOUT
C164
100N 16V + C162
100uF 16V
SMD/0402
C153 R163
10U 10V 1 OHM +-5% 1/10W
Vo=1.25 x (1+1R/120R) = 1.26V
AV25 TO AV12
C177
470uF 16V
DV18_DDR DV18_CI
R208
NC/0R05 1/10W 5%
DV18_DDR TO DV18_CI
L150 NEARLY U155
+12V
R176 C165 L150 NC/15uH
U155 NC/220N 25V
NC/SC4525BSETRT
D150 NC/BAS32L
1 8 2 1
SW BST K A
2 7
IN FB
3 6
ROSC COMP
4 5
GND SS/EN
C172 R161
NC/10uF/16V R168 ZD150 NC/39KOHM +-1% 1/10W
+12V
R166
NC/SS3P4 NC/2R2 1/8W 5%
C185 R165
NC/330P 50V
R171 Q152 NC/10K OHM 1% 1/10W
NC/56KOHM +-5% 1/10W NC/MUN2211TIG
C187
NC/22N 16V
Q155 C163 ZD150 NEARLY U155
NC/MUN2211TIG NC/100N 16V
PANEL5V PANEL_VCC
R153
NC/0R05 1/4W
+12V
Panel VCC=12V
Q150
8 1
D D
7 2
D D
6 3
D D
5 4
S G
SI5441DC
R157
C133 1uF/16V
47K 1/10W 5%
PANEL_VCC ON/OFF:(GPIO5)
R164
36K 1/10W 5%
Normal:High
R133
Stand_By:Low 5K1 1/10W 5%
R158
PANEL_VCC_ON/OFF Q151
BC847C
22KOHM +-5% 1/10W
R159
C156 10KOHM +-5% 1/10W
100N 16V
+5V1_TUN
FB150 NC/220R/2000mA
1 2
U159
2 4 FB151 0 OHM +-5% 1/8W
VIN VO
1
VINH
+ C160 3 5 C176
GND ADJ
100N 16V LD39080PT-R 100N 16V
1.22(1+20K//51K/4K7)=4.92V
+5V_TUNER FROM Regulator
57
Haier LTF42K1&LTF47K1
1,13 +24V
1,9,13 +12V
PANEL5V
1,5,13 +5V_STB
1,6 DV18_DDR
1,5,8,9,10,11,12,13,14 +5V_SW
C171 + C154
NC/220uF 16V
3 +5V_TUNER
NC/10U 10V Y5V
1 +5V1_TUN
1,4,5,7,8,11,12,13,14 DV33
3,5,10,11,12,13,14 AV33
4,5,7,10,12,13,14 DV33SB
5,6,10,12,14 AV12
14 PANEL_VCC
3 AV25
8 DV18_CI
5 PANEL_VCC_ON/OFF
1,3,4,5,6,7,8,9,10,11,12,13,14 GND
Panel VCC deviation
ITEM PANEL PANEL
VCC:+12V VCC: +5V
R164 1K N/C
Q151 BC847C N/C
0R N/C
R155
R157 2K2 N/C
Q150 SI5441 N/C
R158 1K N/C
R159 10K N/C
C167 22U N/C
C156 100N N/C
C157 4U7 N/C
C154 N/C 220uF/16V
R176 N/C 0R
C172 N/C 10uF
PANEL_VCC
U155 N/C SC4525B
R168 N/C 68K
Q155 N/C MUN2211TIG
R171 N/C 56K
Q152 N/C MUN2211TIG
C167 C165 N/C 220N
10U 16V
C184 N/C 100P
C187 N/C 22N
C174 N/C 2N2
R167 N/C 10K
ZD150 N/C SS3P4
L150 N/C 15UH
D150 N/C BAS32L
C157
NC/4.7uF25V C185 N/C 330P
C170 N/C 22P
R160 N/C 1K2
R161 N/C 39K
R166 N/C 2R2
C171 N/C 10uF
R153 N/C 0R
+5V_TUNER R165 N/C 10K
C163 N/C 100N
C152
+
470uF 16V
+24V
+12V
+5V_STB
DV18_DDR
+5V_SW
+5V_TUNER
+5V1_TUN
DV33
AV33
DV33SB
AV12
PANEL_VCC
AV25
DV18_CI
PANEL_VCC_ON/OFF
GND