Main Schematic Diagram - Sharp LC-42SB45U Service Manual

CHAPTER 8.SCHEMATIC DIAGRAM

[1]MAIN SCHEMATIC DIAGRAM

1.Power-1
1 2
DLA/DJA MT538X
A
BRIGHT_ADJ:
Normal:Max:+3V3, Min:0V
DC POWER INPUT Stand_By:0V
INVERTER_ON_OFF:
Normal: High
Stand_By: Low
CN100
INVERTER_ON_OFF
1
2 BRIGHT_ADJ STANDBY:
3
+12V
Normal: High
4
5 Stand_by: Low
6
B
7
8
+24V
SMD/0402
9
10 R113 1K 1/16W 5%
11
STB_PWR5V
12
R108 NC/100R 1/16W 5%
For PFL32 <0.3W
63392 12P 2.0mm R142 NC/100R 1/16W 5%
SMD/0402
STB_PWR5V +5V_STB
FB100 220R/2000mA
1 2
FB101 220R/2000mA
+ C135
C136
1 2
C
+5V_STB(+5V4)
DV33 DV33SB
R129 R144
2K2 1/16W 5% NC/2K2 1/16W 5%
SMD/0402 SMD/0402
STANDBY
D
Q106 R126 1K 1/16W 5% STAND_BY
BC847C SMD/0402
C124
100N 16V STAND_BY:(OPCTRL3)
SMD/0402
Normal: Low
Stand_by: High
0.6 x (1+2.4K/1.2K) = 1.8V
L101 15uH U104
L5985
DV18_DDR
1
E Vout
2
SYNC GND
ZD101
3
INH FSW
+
C112 SS2P4 4
COMP
330UF 16V
R124 R104
C131
NC/22N 16V
C129
R137
NC/1K 1/10W 5% R115 C102
1%
33N 16V
R117
1K2 1/10W
1%
F
OPWRSB
10K 1/10W 5%
OPWRSB(+1V8):
Normal: High
Stand_By: Low
OFF: Low
G
From +12V to +1V8/+1V1 By OPWRSB
H
1 2
3 4 5
- 4 LAYERS
+24V +12V
U101
5 4
ENA VSENSE
6 3
GND NC
7 2
VIN NC
8 1 NC/4K7 1/10W
PH BOOT
+
C106
NC/TPS5420DR
C100
STANDBY R105
NC/0R05 1/10W
CEC_PWRSB
C107
NC/10N 50V
OPWRSB
Q110
STAND_BY R110 R109
ZD102
NC/SS2P4
Reserve
C115
+24V or +12V TO +5V_STB(+5V4)_reserved for OTS42"
R146 NC/0R05 1/4W
+12V
R147 0R05 1/4W
+5V_SW
+
C113
220uF 25V
0.6 x (1+1K/1.2K) = 1.1V
C108 C132 U103 L102 15uH
L5985
8 8 1
Vcc Vcc Vout
7 7 2
GND SYNC
ZD100
6 6 3
FSW INH
5 5 4 SS2P4
FB FB COMP
R106
C128
C104
33N 16V
R127 Q108 Q109 R128
OPWRSB
10K 1/10W 5%
OPWRSB(+1V1):
Normal: High
Stand_By: Low
OFF: Low
3 4 5
6 7
+5V_STB
R112
R121 NC/15K 1/10W 1%
OPWRSB(+5V_SW ON/OFF):
Normal: High
Stand_By: Low
R118
NC/0R05 1/10W 5%
L100 NC/22uH
R107
OPWRSB OPWRSB
+ C110 10K 1/10W 5%
C122 R148 C138 C137
NC/100N 50V NC/1K 1/10W
R145
CEC_PWRSB
NC/10K 1/16W 5%
Use new comp Reserved SMD/0402
CEC_PWRSB:
Normal: High
+5V_STB(+5V4) TO +5V_SW
Stand_by: Low
CEC_PWR(DV33SB ON/OFF):
Normal: Low
Stand_By: High
R140
NC/3.3KOHM +-5% 1/10W
CEC_PWRSB
R150
CEC_PWR 0R05 1/10W 5%
DV11
Q107
NC/MUN2211TIG
+
C111
330UF 16V
R125 C130
NC/22N 16V
+3V3SB TO DV33SB BY CEC_PWR
R116
R123
NC/1K 1/10W 5%
+5V_STB
R143
R122
1K2 1/10W
1%
0R05 1/4W
+5V_TunerB+
R120 NC/0R05 1/4W
6 1
D D
5 2
D D
4 3
S G
Q103
SI3441BDV
STANDBY:
Normal: High
R103
Stand_by: Low
22K 1/10W
R101
STANDBY 2
4K7 1/10W 5%
R100 C126
22K 1/10W 100N 16V
+5V_STB TO +5V1_TUN
6 7
65
8 9 10
2,13 +24V
2,13 +12V
2,7,8,9 +5V_STB
2,8,10,11,12,13,14 +5V_SW
+5V_STB +5V_SW 2 +5V1_TUN
4,6 DV18_DDR
4 DV11
5 OPWRSB
Q104 SI5441DC
5 STAND_BY
8 1
D D 14 BRIGHT_ADJ
7 2
D D 14 INVERTER_ON_OFF
6 3
D D
5 4
S G 2,4,5,7,14 DV33
C105 C101 C133
+ 2,9 +3V3SB
100N 16V
9 CEC_PWR
100uF 16V
R130
6 MEM_VREF
6 VTT
5K1 1/10W
2,3,4,5,6,7,8,9,10,11,12,13,14 GND
Q101 C114
2
BC847C
NC/4.7UF 10V
5,7,9,12,13 DV33SB
C121
DV33SB for 538X MCU
R111
+3V3SB DV33SB
0R05 1/8W
Q105
6 1
D D
5 2 C134 R149
D D
4 3
S G
NC/SI3441BDV C103
+
C116
100N 25V
R141
NC/5K1 1/10W
Q102
C117
C140 R139 NC/MUN2211TIG NC/10uF/10V
+5V_TunerB+
VTT
C118
+5V1_TUN R114 4K7 1/10W
100N 16V
U102
1 8
GND VTT
DV18_DDR
2 7
SD PVIN
R131 NC/75R 1/10W 1% 3 6
VSENSE AVIN
MEM_VREF
4 5
VREF VDDQ
R132 LP2996MRX
NC/75R 1/10W 1% C119 C120 C123
100N 16V NC/10UF 10V 100N 16V
R102
5K1 1/10W
DV18_DDR stabilizer
Q100 C127
BC847C 4.7UF 10V
8 9 10
LC-42SB45U
11
CN100 B1
C100 B4
C101 B9
C102 F2
C103 D9
C104 F5
C105 B8 A
C106 B4
C107 B5
C108 E3
C109 F4
+24V C110 C6
+12V
C111 E6
+5V_STB
C112 E1
+5V_SW
C113 D4
+5V1_TUN
DV18_DDR C114 B8
DV11 C115 C5
OPWRSB
C116 D8
C117 E9
STAND_BY
C118 F9
BRIGHT_ADJ
C119 G9
INVERTER_ON_OFF
C120 G9
DV33
C121 C8
C122 C6
+3V3SB
B
C123 G10
C124 D2
CEC_PWR
C125 F3
C126 G8
MEM_VREF
C127 G8
VTT
C128 E5
GND C129 E2
C130 E6
C131 E1
DV33SB
C132 E4
C133 B9
C134 D9
C135 C2
C136 C2
C137 C8
C138 C7
C140 E8
FB100 C1
C
FB101 C1
L100 B5
L101 E2
L102 E5
Q100 G8
Q101 B8
Q102 E8
Q103 F7
Q104 B8
Q105 D9
Q106 D2
Q107 E7
Q108 F3
Q109 F4
Q110 C4
R100 G7
R101 G7
R102 G8
D
R103 G7
R104 E2
R105 B5
R106 E5
R107 B7
R108 B2
R109 C5
R110 C5
R111 D9
R112 B6
R113 B2
R114 F10
R115 E1
R116 E6
R117 F1
R118 B5
R119 B8
R120 F7 E
R121 B5
R122 F5
R123 E5
R124 E1
R125 E5
R126 D2
R127 F3
R128 F4
R129 D1
R130 B8
R131 F9
R132 G9
R133 B4
R134 B3
R135 E4
R136 E3
R137 E1
F
DV18_DDR R138 D8
R139 E8
R140 D7
R141 E9
R142 B2
R143 F7
R144 D2
R145 C7
R146 D4
R147 D4
R148 C6
R149 D9
R150 E8
TP100 B1
TP101 B1
TP102 B1
TP103 B1
TP104 B1
G
TP105 B1
TP106 B1
U101 B4
U102 F10
U103 E4
U104 E3
ZD100 E5
ZD101 E2
ZD102 C5
H
11