E-8
TROUBLESHOOTING GUIDE
YES
YES
YES
YES
YES
NO
YES
Whether does a screen
of E-E appear or not?
Whether it takes 5V for
IC4001 16, 25, 40, 55,
58, 75, 87th pin or not?
NO
NO
NO
NO
NO
Investigate a power supply
circuit.
Whether there are PB
Y/C signal for TP4001
or not?
Investigate a connection of
IC4001 and cylinder.
Whether there is FM
signal for IC4001
46th pin or not?
Exchange IC4001.
Whether there is FM
signal for IC4001
41st pin or not?
Investigate Q4012 and the
peripheral circuit.
Whether there is a video
signal for IC4001 29th
pin or not?
Exchange IC4001.
Investigate TV circuit.
When playback, a screen
doesn't appear