TROUBLESHOOTING GUIDE
E-22
YES
YES
YES
YES
NO
NO
NO
NO
E-E DOES NOT APPEAR
(THE PICTURE DOES NOT
APPEAR FROM TUNER)
Does normality AU
DIO JACK CONNECT?
Connection is done over again.
Check POWER BLOCK.
Check the picture.
Is there video signal at
pin 24 of TU301?
Change TU301.
Change IC101.
Is there video signal at
pin 28 of IC101?
Are there the voltage of
MB(5V), PB(5V), TU(32V)
of TU301?
Check pin 7 of IC8001.
NO
Is there video
waveform at pin 52 of
IC101?
Check pin19 and 21
of IC4501?
Check IC101.
Change IC4501.
YES
YES
NO
Summary of Contents for SD-22VB
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