LG 50PZ550-ZA / 50PZ550A-ZA / 50PZ550N-ZA (CHASSIS:PD11A) Service Manual ▷ View online
ⓒ LG Electronics. Inc.2010
Making
전자 - 6-2
Revision
PDP TV
Input
Block
Digital TV Video Problem
Check RF Cable
Y
Check TU300 Power
5V(C304), 3.3V(C302),
1.2V(C300)
Check Voltage
5V : IC605 Output
3.3V : IC600 Output
1.2V:IC301 Output
Y
N
Check Video color
Check Monitor Out Video
(Scart out)
Check other input / OSD
Check IIC Line
Check TU_SCL/SDA Line
N
Replace Tuner
N
Y
N
Y
Check Module
N
Y
Change MSTAR(IC400)
Y
A6-1
Repair Process-Reference data
A6
2010. 11. 16
ⓒ LG Electronics. Inc.2010
< CVBS waveform – sample >
- Defend on the input signal.
Making
전자 - 6-2
Revision
PDP TV
Input
Block
Analog TV Video Problem
Check RF Cable
Check CVBS signal
TU601 #11 Pin
Replace Tuner(TU300)
Y
N
Check IC605 Output
Voltage(L610)
Y
N
Y
Replace MSTAR(IC400)
Check 5V voltage
on TU300(Pin3)
A6-2
Repair Process-Reference data
A6
2010. 11. 16
ⓒ LG Electronics. Inc.2010
Making
전자 - 6-2
Revision
PDP TV
Input
Block
Component Video Problem
Check input signal format
Is it supported?
Check signal
on R411,C413,C415
Y
Check the damage of JK210
And Replace Connector
N
Y
Replace MSTAR(IC400)
Y
Check Component Cable
※ Measured signals depend on the input signal.
A6-3
Repair Process-Reference data
A6
2010. 11. 16
ⓒ LG Electronics. Inc.2010
Making
전자 - 6-2
Revision
PDP TV
Input
Block
RGB(D-Sub) Video Problem
Check input signal format
Is it supported?
Check signal, Hsync, Vsync
R218, R219
Check signal
R404, R406, R408
Y
Check P205
Replace connector (P205).
Y
N
Y
Replace R404, R406, R408
N
Replace MSTAR(IC400)
Y
Check RGB Cable
conductors for damage
Y
※ Measured signals depend on the input signal.
A6-4
Repair Process-Reference data
A6
2010. 11. 16
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