LG 50PJ250R-TA / 50PJ251R-TB (CHASSIS:PP01A) Service Manual ▷ View online
ⓒ LG Electronics. Inc.2009
You can see 20 types patterns by using TILT Key on SVC Remote controller (except Old model)
< CHECK Item >
< CHECK Item >
1. Dead pixel 2.Image sticking
3.Mal discharge
4.Module defect (V-Line/Bar, H-Line/Bar,,,)
5. In case of no picture, you can judge defect cause (Module or Main B/D)
- If patterns appear, defect cause is Main B/D
Tilt Key
Making
Revision
PDP TV
Symptom
A. Picture Problem
Check Module pattern by Tilt key
Repair Process-Reference data
Item
A1
ⓒ LG Electronics. Inc.2009
Making
Revision
PDP TV
Symptom
A. Picture Problem
Defect type cause by PDP Module
Repair Process-Reference data
A19
1. Check connection
(CTRL B/D, X B/D)
2. Check CTRL B/D
3. Replace CTRL B/D
Many irregular vertical lines
1. Check connection
(Y-Sus B/D ↔Panel)
2. Check Y-Sus B/D
3. Replace Y-Sus B/D
Horizontal Line or Bar
1. Check connection
(CTRL B/D, X B/D)
2. Check CTRL B/D
3. Replace CTRL B/D
Vertical lines or Bar
1. Check connection
(CTRL B/D, X B/D)
2. Check CTRL B/D
3. Replace CTRL B/D
Regular vertical lines
To action
defects description
Symptom picture
First of all, Check whether all of cable between board was inserted properly or not.
Next, Check whether there is foreign material on connector.
Next, Check whether there is foreign material on connector.
ⓒ LG Electronics. Inc.2009
Making
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
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
(Direct Bonding) on X B/D
FPC Type
Connector to connect between
Electrode PAD Of PANEL and
Y Drive B/D,Z-Sus B/D
Electrode PAD Of PANEL and
Y Drive B/D,Z-Sus B/D
ⓒ LG Electronics. Inc.2009
Making
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
(P813) (P1100)
5V
Error_DET
8
7
6
17
15
16
14
No.
High(3.3V~5V)
RL_ON
High(3.3V~5V)
AC DET
5V
STBY 5V
Check the other pin’s output
High(3.3V~5V)
Vs-ON
High(3.3V~5V)
M5_ON
Remark
Spec
Checking
Point
P814
1
17V
2
17V
3
GND
4
GND
5
5V
6
5V
7
5V
8
Error_DET
9
GND
10
GND
11
GND
12
GND
13
STBY
14
STBY
15
RL_ON
16
AC_DET
17
M_ON
18
AUTO_GND
Wafer
SMAW200-H18S2
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