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NO E-E(VIDEO AND
AUDIO FROM TUNER)
Are the plugs connected
to the VIDEO/AUDIO
input jacks ?
No
Do the voltages appear at
each terminal B+(5V),
PB(5V), and TU(32V) of
TU6001 ?
Yes
CHECK AUDIO
Does AUDIO signal
appear at pin 21
of TU6001 ?
Yes
Check IC4501 and J4501.
TROUBLESHOOTING GUIDE
Yes
No
CHECK VIDEO
Does VIDEO signal
No
No
appear at pin 24
of TU6001 ?
Replace TU6001.
Is there VIDEO
waveform at emitter
of Q6003 ?
Is there VIDEO waveform
at pin 52 of IC4001 ?
Check IC4501 and J4501.
E-22
Digitized in Heiloo, Holland
Disconnect the plugs from the
VIDEO/AUDIO input jacks.
Yes
No
Yes
No
Yes
18/1/2015
Check Power Block.
Replace Q6003.
Check IC4001.
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