TOSHIBA SDV280
Manual de Servicio

TROUBLESHOOTING GUIDE

THE AUDIO CAN NOT RECORD

Is bias level at L101 OK?

NO

In starting recording, is there sine wave at pin 7 of IC101? YES

NO

Check POWER BLOCK and voltage of base of Q103.

YES

Check disconnection and short of L101.

Is there audio signal at pin 76,78 and 80 of IC101?

NO

Check IC701 and the circuit from TUNER or audio input jack to IC701 .

YES

Is there voltage of base of Q103 about 5V? YES

NO Change Q103.

Is there sine wave at pin 5 of L101? YES

NO

Change L101.

Check lead wire of A/C HEAD and CONNECTOR.

E-19