Sharp LC-42SV32B Service Manual page 80

LC-42SV32B
17 RS-232
+5VSB
R1136 ZD131
NC/1K 1/16W TVM1G5R5M100R
SMD/0402
CN105
11 1
6
2
7
3
8
4
REMOTE_5V
9
10 5
D-SUB 9P
H:8.5mm ZD132 ZD133 ZD134
TVM1G5R5M100R TVM1G5R5M100R
NC/TVM1G5R5M100R
Mute Circuit
For AC OFF Pop Noise
First Drop
+12V +5V_SW +5VSB V_MUTE
R661 R662
R660
NC/10K 1/10W 10K 1/10W
NC/27K 1/10W
R666
2.2K 1/10W
Power Detect
RS232
1uF 25V
R1137 100R 1/16W 5%
SMD/0402
TXD_12
R1138 NC/100R 1/16W 5%
SMD/0402 1uF 25V
RXD_12
R1139 NC/100R 1/16W 5%
SMD/0402 C1121
R1140 100R 1/16W 5%
SMD/0402
3V3SB
R1141
10K 1%
REMOTE_5V
R1144 100R 1/16W 5%
For AC ON Pop Noise
HI = > UN-M UTE
LO = > M UTE
A_MUTE
R658
10K 1/10W
R663 Q606 Q607
1K 1/10W 1% MMBT3904 MMBT3904
Q608
MMBT3904 C673
220N 25V
C1119
2
FB140
80 OHM
U116
1 16
C1+ VCC
2 15
V+ GND
TXD_12
3 14
C1- DOUT1
RXD_12
4 13
C2+ RIN1
U0RX
5 12
C2- ROUT1
U0TX
6 11
V- DIN1
7 10
DOUT2 DIN2
8 9
RIN2 ROUT2
MAX3232ECPWR
3V3SB
+5VSB
R1142
Q108
NC/10K 1/16W 5%
2N7002
R1145
0R05 1/16W
DC ON Pop Nose
DC OFF Pop Noise
V_MUTE
R659
10K 1/10W
R664
LO = > M UTE
1K 1/10W 1%
HI = > UN-M UTE
R665
MUTE_CTL
Q609
MMBT3904 1K 1/10W 1% R667
80
1
3V3SB
2,5,7,10,12,13,14,15,16
2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18
R1146
OIRI
IR_LINK
First Arrival
+5VSB
Last Drop
R1147 0R01
D103
+12V
NC/BAS32L
+
C1124
NC/100uF 25V
+5V_SW
MUTE_CTL
13 MUTE_CTL
10 V_MUTE V_MUTE
10,11 A_MUTE A_MUTE
U0TX
3,9 U0TX
U0RX
3,9 U0RX
OIRI
9,13 OIRI
IR_LINK
13 OPCTRL1
3V3SB
2,6,7,9,13 3V3SB
2,3,4,6,9 +5VSB +5VSB
2,14 +12V +12V
+5V_SW +5V_SW
GND
D102
V_MUTE
1
V_MUTE
3
2
BAV70
D104
NC/BAS32L