Sharp LC-42SV50U Service Manual

68
CHAPTER 8.SCHEMATIC DIAGRAM
[1]MAIN SCHEMATIC DIAGRAM (LC-32SV40U & LC-42SV50U & LC-46SV50U)
01 System POWER
TP7111 TP PAD 1.60
Core Power 1.2V
Vcck=2A max.
AC_D ET
1.25x (1+150/750) = 1. 5V
TP7112 TP PAD 1.60
AV33
R7105
750 1%
PW ON/OFF
HI => POWER ON
LO => POWER
OFF
+5.3V
TP7113 TP PAD 1.60
R7107
1K
1.25x (1+150/91) = 3.31V
AC_D ET
C7142
0.1u/16V
+
C7108
100u/16V
BackLight_ON
BackLight_PWM
C7112
10u/10V
U7106
G9117T63U
VIN
3
ADJ
1
VOUT
2
PAD
4
C7151
NC/0.1u/ 16V
R7128 0
+12V_VDD
0.6 x (1+124K/120K) = 1.22V
DV33
U7107
G9117T63U
VIN
3
ADJ
1
VOUT
2
PAD
4
TP7110
TP PAD 1.60
+
C7116
100u/16V
R7130 150 1%
FB7102
120Ω 3A
C7103
0.1u/16V
+
C7104
470u/16V
C7105
10u/10V
C7106
0.1u/16V
C7107
0.1u/16V
+
C7146
100u/16V
C7110
10u/10V
C7111
0.22u/16V
R7126
4.7K
C7114
0.1u/16V
R7121
4.7K
C7117
10u/10V
C7118
10u/10V
C7119
10u/10V
Q7101
PMBT3904
1
32
Near connector
C7123
10u/10V
C7124
0.1u/16V
R7111
82K
R7103 560K 1%
C7136
1u/16V
C7138
0.1u/16V
R7109 124K 1%
L7101 2.2uH 3.5A
+
C7143
100u/16V
C7144
0.1u/16V
U7102
APL5601-50D
VIN
2
GND
1
VOUT
3
PAD
4
C7101
0.1u/16V
+
C7149
220u/25V
Q7102
PMBT3904
1
32
C7141
0.1u/16V
C7140
0.1u/16V
Power seq.
C7137
10u/10V
Reduce ripple
C7133
22p/50V
Power seq.
CN7102
15P 2.0mm 90°
1
2
3
4
5
6
7
8
9
11
10
12
13
14
15
C7132
0.1u/16V
C7131
0.1u/16V
C7130
0.1u/16V
C7128
NC/0.1u/ 16V
C7127
10u/10V
C7125
22p/50V
C7122
0.1u/16V
C7113
10u/10V
R7123 0
Q7105
AP4435GM
S
1
S
2
S
3
G
4
D
5
D
6
D
7
D
8
R7116
4.7K
BackLight_PWM
BackLight_ON
C7102
0.1u/50V
Backlight control
DIGITAL POWER DV33 / ANALOG POWER AV33
R7120
4.7K
+5V
+5V
+3V3SB
R7101 47K
Standby Power
+5VSB
+5V
+5V_TUNER
+5VSB
DV33
DDRV
VCCK
+5VSB
DV33
+12V_VDD
+5VSB
AV12
DV33
DV33
AV33/DV33 3.3V
0.6 x (1+560K/124K) = 3.309V
AV33
BL_PWM5
BL_ON5
R7117
4.7K
L7102 4.7uH 1.7A
Max : 200mA
TUNER POWER +5V_TUNER
R7113 0
+5V
ANALOG POWER AV12
+
C7145
NC/100u/25V
C7147
10u/10V
C7150 47p/50V
U7104
AX3531CTA
VIN
4
EN
1
GND
2
GND
5
FB
6
SW
3
C7120
0.1u/16V
R7106 150 1%
DRAM POWER DDRV
R7108
47K
+
C7152
100u/16V
TP7114 TP PAD 1.60
TP7115 TP PAD 1.60
TP7116 TP PAD 1.60
C7139
0.1u/16V
TP7117 TP PAD 1.60
R7119 137K 1%
U7103
AS1117L-1.2-A
VIN
3
GND
1
VOUT
2
PAD
4
Q7103
PMBT3904
1
32
R7118
4.7K
POWER _SW5
R7114
47K
R7125 4.7K
TP7118 TP PAD 1.60
+
C7153
100u/16V
TP7119 TP PAD 1.60
TP7120 TP PAD 1.60
TP7121 TP PAD 1.60
TP7122 TP PAD 1.60
TP7123 TP PAD 1.60
TP7101
TP PAD 1.60
TP7124 TP PAD 1.60
TP7125 TP PAD 1.60
TP7102
TP PAD 1. 60
TP7103
TP PAD 1.60
PSON
FB7101
120Ω 3A
PSON
TP7104
TP PAD 1.60
TP7105
TP PAD 1.60
TP7108
TP PAD 1.60
TP7109
TP PAD 1.60
R7122
120K 1%
+3V3SB
R7104
124K 1%
U7101
SY8008BAAC
IN
4
EN
1
LX
3
FB
5
GND
2
R7129
91 1%

Sharp LC-42SV50U Specifications

General

Brand	Sharp
Model	LC-42SV50U
Category	LCD TV
Language	English