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
PREV: LG 50PZ550-ZA / 50PZ550A-ZA / 50PZ550N-ZA / 50PZ551-ZC / 50PZ552-ZD (CHASSIS:PD11A) Service Manual

LG 50PZ550-ZA / 50PZ550A-ZA / 50PZ550N-ZA (CHASSIS:PD11A) Service Manual ▷ View online

ⓒ LG Electronics. Inc.2009
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
Z-Sus Board Checking Method(50R3)
Repair Process-Reference data
A9
A9
① Check input voltages(5V, Va, Vs) at P203 connector.
② Check it is short or not between Vs and GND at P203 connector.
③ Check all of fuses open. (FS202)
④ Check voltage of diode , FET by using digital multi-meter.
▣ Measuring Method
▣ Specifications
0.45V~0.55V
Q102,Q103
0.5V ~ 0.6V
0.35V ~ 0.45V
Q106, Q109
Position
Direction
Circuit No.
HS101
D114,D118
Q107, Q110
Forward
0.35V ~ 0.45V
0.35V ~ 0.45V
Reverse
O.L. (Overload)
HS102
D109,D110,D108,D111 Q104,Q113,Q114
Forward
0.35V ~ 0.45V
Reverse
O.L. (Overload)
Diode
FET
ZSUS board
FS202
5V fuse
P203
HS102
HS101
2010. 11. 16
ⓒ LG Electronics. Inc.2009
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
Check 5V, 17V on Power B/D
Repair Process-Reference data
A12
▣ Measure 5V voltage
Power Board
P813
P600
P813
▣ Measure 17V voltage
A12
17.02
2010. 11. 16
ⓒ LG Electronics. Inc.2009
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
Control Board Checking Method(50R3)
Repair Process-Reference data
A13
▣ Checking Method
A13
① Check input voltages(5V of P105 / 18V of P2) at control 
board.
② Check LED is on.
③ If LED doesn’t work, check crystal X1 output.
④ Check 3.3V, 5V IC.
⑤ Check MCM at VS_DA by using digital multi meter.
③ Check Crystal(X1)
① Check Input voltage
④ Check IC ( IC53, IC51 )
Check oscillation of Crystal
(Normal: 25 MHZ)
MCM Check point
(+)VS_DA / (-)  GND 
(Normal: 3.3V )
⑤ Check MCM
3.3V
Pin 14,15  : 18V
IC51
IC53
P2(18V)
Pin14, 15
5V
3.3V
GND
P105_FL1,FL2(5V)
② Check LED On
2010. 11. 16
ⓒ LG Electronics. Inc.2010
Making 
전자 - 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
Mal discharge Symptom
Repair Process-Reference data
▣ Dark picture caused by Mal-discharge
A14
▣ Dot type Mal-discharge symptom
▣ Scan type Mal-discharge symptom
A14
2010. 11. 16
Page of 73
Display

Click on the first or last page to see other 50PZ550-ZA / 50PZ550A-ZA / 50PZ550N-ZA (CHASSIS:PD11A) service manuals if exist.

RANDOM: