DOWNLOAD LG 50PZ950-ZA (CHASSIS:PD12A) Service Manual ↓ Size: 12.41 MB | Pages: 80 in PDF or view online for FREE

Model
50PZ950-ZA (CHASSIS:PD12A)
Pages
80
Size
12.41 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pz950-za-chassis-pd12a.pdf
Date
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LG 50PZ950-ZA (CHASSIS:PD12A) Service Manual ▷ View online

ⓒ LG Electronics. Inc.2010
Making 
전자 - 6-2
Revision 
PDP TV
Input
Block
AV Video Problem
Check input signal format
Is it supported?
Check signal line
JK800-Video : R850
JK900-Video : L900,901,902(RGB),   
R919(CVBS)
Replace L900,901,902(RGB),   
R919(CVBS)
Check AV port of JK800(Side), 
JK900(Rear)
Replace connector
N
Replace BCM(IC101)
Check AV Cable for damage or open 
conductors
※ Measured signals depend on the input signal.
Y
Y
Y
Y
N
A6-5
Repair Process-Reference data
A6
2010. 12 . 24
ⓒ LG Electronics. Inc.2010
Making 
전자 - 6-2
Revision 
PDP TV
Input
Block
HDMI Video Problem
Check input signal format
Is it supported?
Check EDID D/L
Re-Download EDID
Check HDMI Cable for damage or 
open conductors
Check #56~63 on IC701
(HDMI Switch Output)
Replace Connector
Replace IC701
Replace BCM(IC101)
Y
Y
Y
Y
Y
N
N
Check JK701, 702, 703, 704  
for proper connection or damage
N
A6-6
Repair Process-Reference data
A6
2010. 12 . 24
ⓒ LG Electronics. Inc.2009
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
Fuse Checking Method
Repair Process-Reference data
A7
1) Sound comes, the fuse is OK.
2) If Fuse is defects, it should check again voltage of 5V, Va, Va after replacing the fuse. 
3) In case there are no voltage of 5V, Va, Vs, the board is failure, it need to replace the board.
Pic. 2.
Pic. 1.
< DMM mode >
A7
Pic. 1. Fuse check
2010. 12 . 24
ⓒ LG Electronics. Inc.2009
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
Y-Sus Board Checking Method(50H3)
Repair Process-Reference data
A8
A8
A9
▣ Check Method
① Check input voltages(5V, Va, Vs) at P103 connector. 
② Check it is short or not between Vs and GND at P103 connector. 
③ Check all of fuses open. (FS201, FS202, FS203, FS501) 
④ Check voltage of diode , FET by using digital multi-meter.
▣ Measurement method
0.4V~0.5V
Q610,Q612
0.45V~0.55V
Q608,Q609
0.45V~0.55V
Q601,Q602
0.35V ~ 0.45V
Q603,Q605
D604,D605
HS602
0.35V ~ 0.45V
Forward
O.L. (Overload)
Reverse
D602
HS603
0.35V ~ 0.45V
Forward
O.L. (Overload)
Reverse
Position
Direction
Circuit No.
HS601
D610
Q606,Q607
Forward
0.35V ~ 0.45V
0.45V~0.55V
Reverse
O.L. (Overload)
▣ Specifications
Diode
FET
HS603
HS601
HS602
YSUS board
FS202
5V fuse
FS203
Vs fuse
FS201
Va fuse
P113
FS501
18V fuse
2010. 12 . 24
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