No E-E(No Video From Tuner) - JVC HR-J6009UM Service Manual

(NO VIDEO FROM TUNER)
Are the plugs
connected to the
VIDEO input jacks?
Do the voltages appear at
each terminal +B(5V),
PB(5V) and TU(32V) of
Check VIDEO
Does VIDEO signal appear
at pin 24 of TU6001?
Is there VIDEO
waveform at pin
32 of IC4001?
Replace IC4001.
1-40
TROUBLESHOOTING GUIDE
NO E-E
No
Yes
No
TU6001?
Yes
No
Yes
No
Yes
Disconnect the plugs from the
VIDEO input Jacks.
Check peripheral circuit.
Replace TU6001.
Check J4201.