LG 42LD450 Service Manual page 27

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
RS232C
+3.5V_ST
C1101 0.33uF
IC1101
C1106
MAX3232CDR 0.1uF
C1+ VCC
1 16
C1102
0.1uF
V+ GND
2 15
C1103
0.1uF
C1- DOUT1
3 14
C2+ RIN1
4 13
C1104
0.1uF
C2- ROUT1
5 12
V- DIN1
6 11
C1105
0.1uF
DOUT2 DIN2
7 10
RIN2 ROUT2
8 9
EAN41348201
D1107 D1108
CDS3C30GTH CDS3C30GTH
30V 30V
+3.5V_ST
R1109 R1114
4.7K 4.7K
OPT
OPT
R1157 0
R1156 0
R1154 0
R1153 0
10
5
9
OPT
4
IR_OUT
R1122
0
8
R1123
100
JP1121
3
7
R1124
100
JP1122
2
6
1
SPG09-DB-009
JK1101
S7_RXD1
NEC_RXD
S7_TXD1
NEC_TXD
GP2_Saturn7M
RS232C 9PIN
Ver. 1.0
10
LGE Internal Use Only