LG 42LB550T Service Manual

Normal
Voltage
B. Power error
Off when on, off while viewing, power auto on/off
N
Y
Check Power Off
Mode
Fix A/C cord & Outlet
and check each 3
phase out
Check A/C cord
Check for all 3- phase
power out
Check outlet
Replace Main B/D
(If Power Off mode
is not displayed)
Check Power B/D
voltage
Y
N
Replace Main B/D
Replace Power B/D
Replace Power B/D
N
Y
※ Caution
Check and fix exterior
of Power B/D Part
☞A14
☞A13
Established
date
Revised date
8/14
LCD TV
Error
symptom
Standard Repair Process
Status Power off List Explanation
Normal
"POWEROFF_REMOTEKEY" Power off by REMOTE CONTROL
"POWEROFF_OFFTIMER" Power off by OFF TIMER
"POWEROFF_SLEEPTIMER" Power off by SLEEP TIMER
"POWEROFF_INSTOP" Power off by INSTOP KEY
"POWEROFF_AUTOOFF" Power off by AUTO OFF
"POWEROFF_ONTIMER" Power off by ON TIMER
"POWEROFF_RS232C" Power off by RS232C
"POWEROFF_RESREC" Power off by Reservated Record
"POWEROFF_RECEND" Power off by End of Recording
"POWEROFF_SWDOWN" Power off by S/W Download
"POWEROFF_UNKNOWN" Power off by unknown status except listed case
Abnormal
"POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble
"POWEROFF_CPUABNORMAL" Power off by CPU Abnormal
* Please refer to the all cases which
can be displayed on power off mode.
2012. 01 .14
Error
CPU
Abnorm
al
Abnorm
al1
Normal
End
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

LG 42LB550T Specifications

General

Brand	LG
Model	42LB550T
Category	LED TV
Language	English