Hitachi 32LD4550U Service Manual page 96

32"LCD TV
CN7902 CN7901
1 1 Dimming
PS_ON
2 2
3 3 BL_EN
4 4
5 5
6 6
7 7 +5VSB
8 8
9 9
10 10
11 11
12 12 +16VSB
13
14
15 +24V
NC/CONN
CONN
PS_ON
D7902
+5V
C7907
L7902
10uH
DV33
+
+5V
U7905
3 2
VIN VOUT
+ +
C7921
C7920 100uF/16V
100uF/16V
DV33 U7907
3 2
VI VO
+
C7932
100uF/16V
0.1uF/25V
R7901 R7902
0 OHM 1/10W 1K OHM 1/10W
Q7901 R7903
C7902 MMBT3904 4.7K OHM 1/10W
NC\1uF/16V DV33 +3V3SB
R7905
10K OHM 1/10W
Q7903 R7907
MMBT3904 4.7K OHM 1/10W
+5V +5V
R7910
NC R7911
NC
R7913 NC
Q7905 Q7906 R7914
NC/MMBT3904 NC/MMBT3904 NC
U7902
LL4148
9 C7901 0.047uF R7916
PAD
0.47uF 1 8
BST SY NC
2 7 C7908 220pF
IN COMP
3 6 R7917 5.6K OHM 1/10W
SW FB
4 5
GND EN
R7918 10K OHM 1/10W
SC4519S.TRT
D7903
SM340A
AV33 DV33
U7906
3 2
VIN VOUT
+
C7925 C7922 C7926
0.1uF/25V
100uF/16V 10uF/10V
R7930
0 OHM 1/10W
AV25
C7933
C7935 16V 1uF/25V
R7933 20K OHM 1/10W
R7934 2K OHM 1/10W
R7937
0 OHM 1/8W
+
C7937 C7940
100uF/25V 0.1uF/25V
DV33 +5VSB
U7901
3
BL_DIM 10 VIN VOUT(heat sink)
+
C7903
R7906 100uF/16V
10K OHM 1/10W
AME8810-AEGTZ 0.6A/3.3V
BL_ON/OFF 10
POWER_ON/OFF 10
AV25
10K OHM 1/10W U7903
3 2
VIN VOUT
+
DV33
C7909 C7912
100uF/16V 0.1uF/25V
R7923
0 OHM 1/10W
DV12_DM C7918
+5V 1uF/16V
R7927 100K OHM 1/10W
R7928 3K OHM 1/10W
C7923
C7927 C7928 + NC
0.1uF/25V
C7931
470uF/16V 0.1uF/25V
R7931
U7908 C7934
1 8 NC R7932
FB VSS
2 7 10K OHM 1/10W
EN VSS
3 6
OCSET OUTPUT
4 5 L7904 27uH
VCC OUTPUT
AP1510SA
+
C7936
470uF/10V
D7901
SM240A
絬 隔 瓜 絪 腹
Key Component
95
+3V3SB
L7901
2
BEAD
+5VSB
C7904 C7905 R7936
10uF/10V 0.1uF/25V 200 OHM 1W C7946
4.7UF10V
10 POWER_ON/OFF
+16VSB
AV12
+
C7913 C7914 C7910
1uF/16V 0.1uF/25V 100uF/16V
10 POWER_ON/OFF
U7904
1 8
FB VSS
2 7 C7919 NC
EN VSS
3 6
OCSET OUTPUT
4 5 L7903 27uH
VCC OUTPUT
AP1513SA
C7924
D7904
SM340A
1.3K OHM 1% 1/10W
7V 7V
U7909
3
INPUT OUTPUT
1
ADJ/GND
C7938 AZ1117D-5.0-E1
0.1uF/25V
T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL
TPV MODEL
Power PCB NAME 715T3009
Date Friday , June 20, 2008 Sheet 21 of
Hitachi 32LD4550U
+5V
Q7902
1 8
S D
2 7
S D
3 6
S D
4 5
G D
AP9435GM -5.3A/-30V
R7904 47K OHM 1/10W
+3V3SB
R7909
10K OHM 1/10W
R7912 Q7904
10K OHM 1/10W MMBT3904
C7906
1uF/16V
16V
Q7907
1 8
S D
2 7
S D
3 6
S D
C7947 4 5
G D
10uF/25V
AO4449 -7A/-30V
R7915
47K OHM 1/10W
+3V3SB
R7922
10K OHM 1/10W
R7924 Q7908
10K OHM 1/10W MMBT3904
C7917
1uF/16V
R7925 2K OHM 1/10W
R7926 DV10
1.02K OHM 1/10W 1% FB7901
R7935
BEAD
0 OHM 1/8W
C7929 C7930
+
C7942
0.01uF/25V
+TUNER_5V +5V_TUNER
FB7902
2
0 OHM 1/8W
+ C7941
C7939 0.1uF/25V
470uF/10V
Size A3
Rev
H
称爹 <称爹>
21