AIWA HV-FX8100U
Manual de Servicio

TROUBLESHOOTING GUIDE
THE AUDIO CAN NOT RECORD

IS BIAS LEVEL AT T4001 OK ? YES

NO

IS THE VOLTAGE OF T4001 AT PIN 2 5V ? YES

NO

CHECK POWER BLOCK.

IS THERE AUDIO SIGNAL AT PIN 5 OF T4001 ? NO

YES

CHECK A/C HEAD AND CIRCUIT AROUND OF IC4001.

CHECK SNAPPING OF A WIRE IN T4001 AND CIRCUIT AROUND IT.

IS THERE AUDIO SIGNAL AT PIN 80 OF IC4001 ? YES

NO

CHECK THE CIRCUIT FROM TUNER AND AUDIO INPUT JACK TO PIN 80 OF IC4001.

IS THERE AUDIO SIGNAL AT PIN 97 OF IC4001 ? YES

NO CHANGE IC4001.

IS THERE AUDIO SIGNAL AT PIN 5 OF T4001 ? YES

NO CHANGE IC4001.

CHECK LEAD WIRE OF A/C HEAD AND CONNECTOR.

E-19