LG 50PT490-ZD (CHASSIS:PD11K) Service Manual ▷ View online
< CVBS waveform – sample >
- Defend on the input signal.
Making
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
Making
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
Making
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
Making
Revision
PDP TV
Input
Block
AV Video Problem
Check input signal format
Is it supported?
Check signal line
JK207-Video : C425
JK100-Video : C408,C410,C412(RGB),
JK100-Video : C408,C410,C412(RGB),
C423(CVBS)
Replace Capacitor
Check AV port of JK207(Side),
JK100,JK101(Rear)
Replace connector
N
Replace MSTAR(IC400)
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
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