LG 60PK750 Service Manual page 30

Repair Process
PDP TV
Symptom
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( Menu→Press Red Key on R/C→Enter Signal Test)
Check RF Signal level
- Signal strength (Normal : over 50%)
- Signal Quality (Normal: over 50%)
Y
Check whether other equipments have problem or not.
Normal
(By connecting RF Cable at other equipment)
Signal?
→ DVD Player ,Set-Top-Box, Different maker TV etc
N
Check RF Cable
Connection
1. Reconnection
2. Install Booster
N
Normal
Picture?
Y
Close
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A. Picture Problem
Picture broken/Freezing
Y
Normal
S/W Version
Picture?
N
Contact with signal distributor
or broadcaster (Cable or Air)
■ Menu→Setup →Booster
N
Check SVC
Bulletin?
Y
S/W Upgrade
N
Normal
Picture?
Y
Close
4
Making 2010. 2 . 22
Revision
Booster menu
Normal
On→Off: Check
Picture?
Off→On: Check
Check
Tuner soldering
Replace
Main B/D
ⓒ LG Electronics. Inc.2009
전자 - 6-2
4/9
Y
Close
N