Toshiba D-VR4SU Service Manual page 100

TROUBLESHOOTING GUIDE
TUNER AUDIO (MONO)
DOES NOT APPEAR.
NO Refer to section "E-E AUDIO
Does E-E AUDIO
(MONO) DOES NOT APPEAR".
(MONO) appear ?
YES
Check circuit around at pin
NO
Is there signal at pin
13 of TU301.
57 of IC701 ?
YES
Is there audio signal at
NO
Change IC701.
pin 78 and 80 of IC701 ?
YES
Is there audio signal
NO
a emitter of
Check IC701.
Q8017 and Q8018 ?
YES
Check circuit around of J8005.
E-26
D-VR4SU/D-VR4SC