DOWNLOAD LG 50PZ550-ZA / 50PZ550A-ZA / 50PZ550N-ZA (CHASSIS:PD11A) Service Manual ↓ Size: 12.89 MB | Pages: 73 in PDF or view online for FREE

Model
50PZ550-ZA 50PZ550A-ZA 50PZ550N-ZA (CHASSIS:PD11A)
Pages
73
Size
12.89 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pz550-za-50pz550a-za-50pz550n-za-chassis-pd11a.pdf
Date
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LG 50PZ550-ZA / 50PZ550A-ZA / 50PZ550N-ZA (CHASSIS:PD11A) Service Manual ▷ View online

ⓒ LG Electronics. Inc.2010
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
Connector Type on PDP Module
Repair Process-Reference data
A20
96 Out Put
COF Type
1. Check foreign & Connection status
2. Check bad soldering 
on Chip resistance
▣ Defect symptom 
192 Out Put
TCP Type
TCP (Tape Carrier Package) is film
for IC connect with Electrode pattern
(Direct Bonding) on X B/D
FFC Type
Connector to connect between
Electrode PAD Of PANEL and
Y Drive B/D,Z-Sus B/D
A20
2010. 11. 16
ⓒ LG Electronics. Inc.2010
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
RF Signal level Checking method
Repair Process-Reference data
◆ MENU 
Æ Press Red Button on R/C Æ Singal TEST -> Diagnostics
1. Check whether Signal Strength, Signal Quality is over 50% or not.
2. If Signal Strength, Signal Quality is under 50%,install the Booster to increase signal level.
A21
A21
2010. 11. 16
ⓒ LG Electronics. Inc.2010
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
Repair Process-Reference data
Check voltage on Power board 
A22
B. Power Problem
Checking Order
Checking Order
Pin Map
Power B/D↔Main B/D
No.
Checking 
Point
Spec
Remark
1
STBY 5V
2
5V 
5V
3
17V
17V
4
AC DET
High(3.3V~5V)
5
RL_ON
High(3.3V~5V)
6
M_ON
High(3.3V~5V)
A22
P813
2010. 11. 16
ⓒ LG Electronics. Inc.2010
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
Repair Process-Reference data
Power board Checking Method
A23
B. Power Problem
① Check soldering status on each major component.
② Check there is problem on major component  or not by eye.
(CONDENSER, FET, IC, Resistor) 
③ Check FUSE.
④ Check 5V,Va,Vs voltage
※ PSU Maker: 1) LGIT   2) LITEON   3) YUYANG   
※ If  happen Power board Protection,
check whether there is Short or Open on Y-SUS, Z-SUS B/D or not.
▣ Checking Method
Va Voltage ADJ
- value
+ value
Adjust way
◆ Check 5V,Va,Vs voltage
: For Voltage specification,
refer to the PDP Module Label.
SC101
Vs Voltage ADJ
◆ Adjust Va,Vs voltage.
Vs adjust
Va adjust
A23
P811
Power B/D↔ Y-Sus B/D(P811)
P813
NAME
PIN
7
6
5
4
3
2
1
VS
VS
NC
GND
GND
VA
M5V
2010. 11. 16
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