Table of Contents
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PDM-4220
Teletext
[Tuner PWB Circuit]
24
No Teletext
Are waveforms at
Yes
QT03(E),QT04(E)
and QT05(E)
No
Are waveforms at
Yes
pin 46,47,48 of
IT01
No
Is waveform at
Yes
pin 31 of IT01
(TV,CV)?
No
Is waveform at
Yes
pin 25 of PTV2
(TV,CV)?
No
Check Video PWB
Check PTV2 connector
or Video PWB
Check QT03,QT04,QT05
Check around IT01
Check around
QT01,QT02
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