|HFP0428.PDF||Hi-Fi Products CSA-13
Sony Service Company - Technical Services
A Division of Sony Electronics Inc.
Sony Drive, Park Ridge, New Jersey 07656
Model: GEN-HFP No. 428
Subject: A Whistling noise is heard when playing certain Date: February 1, 1995
(64) A whistling noise can be heard from the mechanical assembly. The whistling noise is
a result of vibration of the disc, optical lens, and BU base which results in an audible
resonant frequency. The following modification is applicable to all units that use the
KSS-240A optics and exhibit the audible noise.
Solution: To reduce the vibration of the BU base a|