TROUBLESHOOTING GUIDE
E-20
CASSETTE TAPE IS NOT
ACCEPTED
Replace IC1001.
Does 12 MHz Clock
oscillate ?
Replace X1001.
Replace LOADING MOTOR.
Yes
No
No
Yes
Yes
No
No
Yes
Check EOT, BOT and Photo sensor.
When cassette is not
inserted, is the voltage
1.6V at Emitter of Q102
and Q101 ?
When a cassette is
inserted, is the voltage
between pins 3 and 4 of
CP1006 12V ?
When a cassette is
inserted, is the voltage at
pin 21 of IC1001 4.7V ?
Check circuit of LOADING MOTOR.
