LG 50PW450 Service Manual - Page 29

Picture broken/Freezing

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Repair Process PDP TV Symptom A. Picture Problem Picture broken/Freezing Making Revision 2010. 11. 16 전자 - 6-2 4/10 ☞A21 Check RF Signal level . By using Digital signal level meter . By using Diagnostics menu on OSD ( Menu→Press red key on R/C →Signal TEST) - Signal strength (Normal : over 50%) - Signal Quality (Normal: over 50%) Normal Signal? Y Check whether other equipments have problem or not. (By connecting RF Cable at other equipment) → DVD Player ,Set-Top-Box, Different maker TV etc N Check RF Cable Connection 1. Reconnection 2. Install Booster Normal Picture? Y N Move No Picture/ Sound Ok Section ■ Menu→Setup →Booster Normal N Picture? Y Close Check S/W Version SVC Bulletin? Y N Booster menu On→Off: Check Off→On: Check S/W Upgrade Normal N Picture? Y Close 4 Normal Picture? Y Close N ☞A6-1, 2 Check Tuner & replace Main B/D Normal Picture? Contact with signal N distributor or broadcaster (Cable or Air) ⓒ LG Electronics. Inc.2010

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ⓒ
LG Electronics. Inc.2010
Making
전자
- 6-2
Revision
4/10
PDP TV
Symptom
A. Picture Problem
Picture broken/Freezing
Repair Process
Y
☞
A21
4
N
Check RF Signal level
Normal
Signal?
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→
DVD Player ,Set-Top-Box, Different maker TV etc
■
Menu
→
Setup
→
Booster
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( Menu
→
Press red key on R/C
→
Signal TEST)
- Signal strength (Normal : over 50%)
- Signal Quality
(Normal: over 50%)
Normal
Picture?
Y
N
Normal
Picture?
Y
Close
N
N
Check
S/W Version
Booster menu
On
→
Off: Check
Off
→
On: Check
S/W Upgrade
SVC
Bulletin?
Check
Tuner & replace
Main B/D
Normal
Picture?
Y
N
Y
Close
Normal
Picture?
Y
Close
N
☞
A6-1, 2
Normal
Picture?
N
Contact with signal
distributor or
broadcaster
(Cable or Air)
Move
No Picture/ Sound Ok
Section
2010. 11. 16