Sony HFP0428 free download

File name HFP0428.PDF

Hi-Fi Products CSA-13 Service Bulletin 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 Discs. Symptom: (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 add the weight (P/N 4-962-979-01) to the optical block using a +PTP2.6X8 screw (P/N 7-685-134-19) in place of the original screw. Reference: FPR-P3350 PRINTED IN USA Autoflagged - NO PRINTED ON RECYCLED PAPER Audio Products Service Bulletin No. xxx