LG Electronics 340T D. Function error, Remote controlR/C operating error, Lcd Tv, Check & Repair

Standard Repair Process

	Error	D. Function error	Established	2012. 01 .14
LCD TV			date
	symptom	Remote control & Local switch checking	Revised date		11/14

1. Remote control(R/C) operating error

☞A17

☞A17

☞A17

Replace Main B/D

Check R/C itself

Operation

Normal Y operating?

Check & Repair	Normal
Cable connection
	operating?
Connector solder

N	Check B+	Normal	Y
	3.5V
		Voltage?
	On Main B/D

Check IR

Output signal

Normal Y Signal?

N

Y

☞A4

N

N

Check R/C Operating

When turn off light in room

If R/C operate,

Explain the customer cause is interference from light in room.

Check & Replace

Baterry of R/C

Normal

operating?

N

Replace R/C

Close

Close

Check 3.5v on Power B/D

Replace Power B/D or

Replace Main B/D

(Power B/D don’t have problem)

Repair/Replace

IR B/D

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