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When inserting cassette,
it ejects immediately
Whether don't you
enter it with an other
cassette or not?
If you cover an infrared
rays sensor, 3rd of IC1001,
is a tension of 4th pin 0V?
Whether is an ejection
position of a front roading
gear correct or not?
Investigate IC1001.
FF/REW do not work
When pushing FF/REW
button, does the voltage
of 76th pin of IC1001
change?
Whether does the
voltage of CP1004
4th pin change?
Investigate deck mechanism.
48
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
For whether it is a cassette
defective product or not,
cassette roading block
defective product.
Exchange EOT/BOT photo
transister.
Investigate a front roading gear.
Exchange IC1001.
Investigate IC1001 72nd pin.
Investigate Q1001 and the
peripheral circuit.
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