H.
Cassette is not
inserted.
Is Motor 12V supplied?
YES
CAM DATA is changed
when CST IN?
YES
Is 5V applied to
pin of IC602 when CST IN?
4
YES
Chek IC602
NO
Check Q851 of power
circuit
NO
Check connector.
NO
Is 5V supplied at
pin of IC601?
45
YES
Check IC601
24
NO
Check DECK part.
NO
Check PATTERN