Toshiba SD-V393SU Service Manual page 89

TUNER AUDIO (STEREO)
DOES NOT APPEAR
Does TUNER AUDIO
(MONO) appear?
YES
Does E-E AUDIO
(STEREO) appear?
YES
At the time of channel change,
does the display of a stereo
come out to the screen?
YES
Is there audio signal at
pin 57 of IC701?
YES
Is there audio signal at
pins 78 and 80 of IC701?
YES
Is there audio signal
a emitter of
Q8005 and Q8006.
YES
Check circuit around of J8001.
TROUBLESHOOTING GUIDE
NO
NO
NO
NO
NO
NO
E-26
Refer to section "TUNER AUDIO
(MONO) DOES NOT APPEAR".
Refer to section "E-E AUDIO
(STEREO) DOES NOT APPEAR".
Change IC701.
Check circuit around
of TU301 at pin 14.
Change IC701.
Check IC701.