Yamaha MD4 Owner's Manual page 73

65
Q&A Section
Is MD4 sensitive to knocks and vibration?
Within reason, no. MD4 features a three-second sound buffer for uninterrupted operation.
Do I have to clean the MD4 heads?
No. In a cassette tape recorder, the head touches the tape. The MD4 heads, however, do not con-
tact the disc. The MD4 heads are very sophisticated electronic devices. Do not interfere with
them.
MD4—Owner's Manual