Hitachi 42PD7200 Service Manual page 29

Teletext
[Tuner PWB Circuit]
42PD7200 (PW2)
No Teletext
Are waveforms at
QT03(E),QT04(E)
and QT05(E)
No
Are waveforms at
pin 46,47,48 of
IT01
No
Is waveform at
pin 31 of IT01
(TV,CV)?
No
Is waveform at
pin 25 of PTV2
(TV,CV)?
No
Check Video PWB
Yes
Check PTV2 connector
or Video PWB
Yes
Check QT03,QT04,QT05
Yes
Check around IT01
Yes
28
Check around
QT01,QT02