Toshiba SDV391U Service Manual page 93

TUNER AUDIO (MONO)
DOES NOT APPEAR
Does E-E AUDIO
(MONO) appear?
YES
Is there signal at pin
48 of IC701?
YES
Is there audio signal at
pin 53, 57 of IC701?
YES
Is there audio signal
a collector of Q8005
and Q8006?
YES
Check circuit around of J8001.
TROUBLESHOOTING GUIDE
NO
NO
NO
NO
E-25
Refer to section "E-E AUDIO
(MONO) DOES NOT APPEAR".
Check circuit around of TU301
at pin 14.
Change IC701.
Check IC701.