LG 50LN54 Series Service Manual page 36

RS-232C
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 © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
R4001
100
PM_TXD
R4000
100
PM_RXD
RS232C_DEBUG_4P
+3.5V_ST
P4000
12507WS-04L
VCC
1
PM_RXD
2
GND
3
RM_TXD
4
5
GND
NC4_S7LRM 2012/06/20
RS232C_4P_OS 40
LGE Internal Use Only