Panasonic TH-42PZ80U Technical Manual page 41

Diagnosis for Picture Problem
<Diagnosis (2)>
Confirm the waveform at "TPSC1" of the SC board
<Result>
OK
Waveform
<Cause>
D Board defect
IC9300
Video/Panel
IC9400
Control
PLASMA AI
DATA
DRIVER
Correct Waveform
D
IC9500
DISCHARGE
CONTROL
Scan Control Pulse
Sustain Control Pulse
(All Over the Screen)
<Result>
NG
Waveform
<Cause>
SC,SU,SD Board defect
TPSC1
SC SU
SD
Video DATA (R)
Panel Drive Circuit
41
Sample of NG Waveform
Here
Refer to "Diagnosis (3)"
on next page
<Back side view>
Buffer IC Buffer IC
Video DATA (L)
SS