Toshiba 15DLV16 Service Manual page 66

THE PICTURE APPEARS, BUT
THE AUDIO DOES NOT
APPEAR. (AT RF MODE)
IS CP4403 AND
CP4401
CONNECTED ?
YES
IS THERE SIGNAL AT
PINS 1 AND 4 OF
CP4403 ?
NO
IS THERE SIGNAL AT
PINS 2 AND 4 OF
IC302 ?
NO
IS THERE SIGNAL AT
PINS 3 AND 30 OF
IC301 ?
NO
IS THERE SIGNAL AT
PINS 28 AND 30 OF
IC4201 ?
NO
IS THERE SIGNAL AT
PIN 14 OF TU001 ?
NO
CHANGE TU001.
TROUBLESHOOTING GUIDE
NO
YES
YES
YES
YES
YES
E-2
CONNECT CP4403 AND
CP4401.
CHANGE SP301.
CHECK IC302 AND
PERIPHERAL CIRCUIT.
CHECK IC301 AND
PERIPHERAL CIRCUIT.
CHECK IC4201 AND
PERIPHERAL CIRCUIT.
CHECK IC901 AND
PERIPHERAL CIRCUIT.