Panasonic PDP 2008 models - Page 22

22
NoNo
YesYes
D
CS
US
DS
1C
ataD oediV
2C
TED elbaC
3C
lenaP
SDVL
5D
VIRD NACS
mrofevaW(
)1
CS
PT
t
a
<Symptom>
Electronic Abnormal Discharge Picture (All over the screen)
<Counter Measure>
<Trouble Picture Example>
Notice:
You can also diagnose which board is wrong by measuring waveform at TPSC1.
Diagnosis procedure is as follows.
<Caused Possibility>
<Diagnosis Procedure>
<Block Diagram>
Disconnect SU board from
SC board then Power ON.
Can you see the picture
normally at lower half?
Connect SU board, Disconnect SD
board from SC board then
Power ON. Can you see the picture
normally at upper half?
SU Board
SD Board
SC Board
SC, SU, SD Board
Disconnect SU or SD Board
5. Troubleshooting
Picture Problem (2)
IC9300
IC9400
IC9003
Discharge Control for SS
Discharge Control for SC
IC9500
Test
Pattern
Situation
Disconnect SD Board
(Connect SU)
Disconnect SU Board
(Connect SD)
Disconnect Both Boards
Waveform OK
Waveform OK
Waveform OK
Condition Cause
SU Board
SD Board
SC Board
(D Board)
(*1)
(*1) For PX80, it is A board , because there is no D board.