LG 50PQ1000-ZA (CHASSIS:PD92A) Service Manual ▷ View online
Making
Revision
2009. 2 . 1
2/14
PDP TV
Input
Block
Digital TV Video Problem
Check RF Cable
Check TP Clock, Data, Sync
Maybe Tuner has problems
: Replace Tuner
Y
N
Check 5V voltage
on IC500, IC501(Chip Tuner)
Replace IC500 or IC501
Y
N
Y
Replace Mstar(IC100) has
problems
N
Y
Check color
Bad Tuner. Replace Tuner.
None
Green
Check Demodulator Input Clock
X501 (31.875MHz)
Replace it X501
N
Y
Check PDP Module
Control board
Refer to Module CAS
Control board
Refer to Module CAS
Check P400 or P403
#17(CKM) , #18(CKP) ,
#32(CKP) , #33(CKM)
#17(CKM) , #18(CKP) ,
#32(CKP) , #33(CKM)
< CVBS waveform – sample >
- Defend on the input signal.
Making
Revision
2009. 2 . 1
PDP TV
Input
Block
Analog TV Video Problem
Check RF Cable
Check CVBS signal
TU500 #16 Pin
Replace Tuner(IC500)
Y
N
Replace IC503 or IC505
Y
N
Y
Replace Mstar(IC100)
Check 5V voltage
on IC500, IC501(Chip Tuner)
3/14
Making
Revision
2009. 2 . 1
PDP TV
Input
Block
Component Video Problem
Check input signal format
Is it supported?
Check signal
on C712,C713,C714
Y
Check the damage of JK701
And Replace Connector
N
Y
Replace Mstar(IC100)
Y
Check Component Cable
※ Measured signals depend on the input signal.
4/14
Making
Revision
2009. 2 . 1
PDP TV
Input
Block
RGB(D-Sub) Video Problem
Check input signal format
Is it supported?
Check signal, Hsync, Vsync
R744, R745
Replace R744, R745
Check signal
R747, R748, R749
Y
Y
N
Check JK703
Replace connector (JK703).
Y
N
Y
Replace R747, R748, R749
N
Replace Mstar(IC100)
Y
Check Signal
R753,R750,R751
Replace R753,R750,R751
N
Check RGB Cable
conductors for damage
Y
※ Measured signals depend on the input signal.
5/14
Click on the first or last page to see other 50PQ1000-ZA (CHASSIS:PD92A) service manuals if exist.