E-20
TROUBLESHOOTING GUIDE
NO
YES
NO
YES
YES
NO
YES
YES
A cassette tape can't insert it
Whether does WORM
gear of a cassette roading
block move or not?
Investigate a front roading gear
and LOCKER.
When not inserting
a cassette more, is
a tension of 3, 4th
pin of IC1001 0V?
Around a cassette
insertion, is a voltage
for 3, 4th pin of
CP1006 9V?
Exchange roading motor.
Around a cassette
insertion, is a
voltage of 21st pin
of IC 1001 5V?
Whether does 12MHz
clock oscillate or not?
NO
NO
Investigate a circuit of roading
motor.
Exchange IC1001.
Exchange X1001.
Investigate IC1001 to
investigate LED and
photosensor of a MAIN PCB
and the peripheral circuit.
