Chapter 8.Schematic Diagram; Main Schematic Diagram - Sharp LC-32SV40U Service Manual

CHAPTER 8.SCHEMATIC DIAGRAM

[1]MAIN SCHEMATIC DIAGRAM (LC-32SV40U & LC-42SV50U & LC-46SV50U)
01 System POWER
CN7102
TP7111 TP PAD 1.60
1
TP7112 TP PAD 1.60
2
TP7113 TP PAD 1.60
3
TP7114 TP PAD 1.60
4
DV33
TP7115 TP PAD 1.60
5
TP7116 TP PAD 1.60
+12V_VDD
6
TP7117 TP PAD 1.60
7
TP7118 TP PAD 1.60
8
TP7119 TP PAD 1.60 R7107
9
TP7120 TP PAD 1.60 1K
+5VSB
10
TP7121 TP PAD 1.60
11
PSON
TP7122 TP PAD 1.60
PSON
12
TP7123 TP PAD 1.60 BackLight_ON
13
TP7124 TP PAD 1.60 BackLight_PWM C7151
14
AC_DET
TP7125 TP PAD 1.60 NC/0.1u/16V
15 AC_DET
15P 2.0mm 90°
+5V
FB7101
120Ω 3A
C7147 C7153 C7120
+
10u/10V 100u/16V C7112 0.1u/16V R7113
10u/10V
Reduce ripple
Standby Power
U7106
+5VSB G9117T63U
3 2
VIN VOUT
4
PAD
C7117 C7114 C7130
10u/10V 0.1u/16V R7129 0.1u/16V
91 1%
R7130 150 1% 1.25x (1+150/91) = 3.31V
DIGITAL POWER DV33 / ANALOG POWER AV33
+5V U7101
SY8008BAAC
4
R7119 137K 1% 1
C7110 C7106
10u/10V 0.1u/16V
Power seq. R7111 C7107
82K 0.1u/16V
PW ON/OFF
+5VSB
HI => POWER ON
LO => POWER
OFF
C7144
0.1u/16V
+3V3SB
R7125 4.7K 1
R7118 R7117
4.7K 4.7K
1 Q7103
5 POWER_SW
PMBT3904
R7114
47K
Power seq.
U7104
4 3 L7101 2.2uH 3.5A
VIN SW
1 6
EN FB
0 C7139
2 5 0.1u/16V
GND GND
C7125
22p/50V R7104
124K 1%
AX3531CTA
R7122
C7133 120K 1%
22p/50V
DRAM POWER DDRV
DV33 U7107
G9117T63U
TP7102
3
VIN
TP PAD 1.60
C7105 C7142
+3V3SB
10u/10V 0.1u/16V
C7152
+
C7137 100u/16V
10u/10V
3 L7102 4.7uH 1.7A
IN LX
5 C7150 47p/50V C7123
EN FB
10u/10V
R7103 560K 1%
R7109 124K 1%
+5V
+5.3V
1 8 TP7110
S D
2 7 TP PAD 1.60
S D
3 6
+
S D
R7126 C7111 4 5 C7149 C7132
G D
4.7K 0.22u/16V 220u/25V 0.1u/16V
Q7105
AP4435GM
R7101 47K
Q7101 C7128
PMBT3904 NC/0.1u/16V
TP7101
TP PAD 1.60
VCCK
C7119
+
10u/10V
C7104
470u/16V
Core Power 1.2V
0.6 x (1+124K/120K) = 1.22V
Vcck=2A max.
TP7103
TP PAD 1.60
FB7102
120Ω 3A
2
VOUT
4 C7124
+ C7108
PAD
0.1u/16V 100u/16V
R7106 150 1% R7105
750 1%
1.25x (1+150/750) = 1.5V
TP7104
TP PAD 1.60 AV33
R7123 0
DV33
C7101 TP PAD 1.60 C7143
+
0.1u/16V TP7105 100u/16V
AV33/DV33 3.3V
0.6 x (1+560K/124K) = 3.309V
68
Backlight control
DV33
R7116
4.7K
BackLight_PWM
5 BL_PWM
R7128 0
DV33
R7121
4.7K
R7120
4.7K
1
5 BL_ON
Q7102
R7108 PMBT3904
47K
+12V_VDD +5VSB
+ C7145
NC/100u/25V C7102
0.1u/50V
DDRV
TUNER POWER +5V_TUNER
+5V U7102
APL5601-50D
2
VIN VOUT
4
PAD
C7127 C7141
10u/10V 0.1u/16V
ANALOG POWER AV12
U7103
AV33 AS1117L-1.2-A
3 2
VIN VOUT
C7118 4
PAD
C7138
10u/10V 0.1u/16V C7131
0.1u/16V
BackLight_ON
C7140
0.1u/16V
+ C7146
100u/16V C7103
0.1u/16V
Near connector
TP7108
TP PAD 1.60 +5V_TUNER
M ax : 200m A
3
C7122 C7113
0.1u/16V 10u/10V
TP7109
TP PAD 1.60
AV12
C7116
+
C7136 100u/16V
1u/16V