LG Electronics 42LT640H-ZA B. Power error, Lcd Tv, Check Power Off Starusinstart menu

Standard Repair Process

	Error	B. Power error	Established
LCD TV			date
	symptom	Off when on, off while viewing, power auto on/off	Revised date	7/13

Check outlet

☞A22

Check A/C cord

Check for all 3- phase power out

N

Error?

Y

Check Power Off Starus(instart menu

CPU

Abnormal

Abnormal 1

Replace Main B/D Normal? Y End

N

Replace Power B/D

Fix A/C cord & Outlet and check each 3 phase out

☞A19

(If Power Off mode is not displayed) Check Power B/D voltage

※Caution

Check and fix exterior of Power B/D Part

Normal Y voltage?

N

Replace Power B/D

Replace Main B/D

*Please refer to the all cases which can be displayed on power off mode.

Status	Power off List	Explanation
	"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
Normal	"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

7

Copyright © 2012 LG Electronics. Inc. All rights reserved.	LGE Internal Use Only
Only for training and service purposes