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S®
Sony Service Company National Technical Services A Division of Sony Electronics Inc. Park Ridge, New Jersey 07656
CONFIDENTIAL
Service Bulletin Hi-Fi Products
No.
CSA-13
Model:
STR-GA8ES, STR-GA9ESG
521
Subject: Noise in Rear Channels Symptom: (154)
Date: March 5, 1997
If the customer complaint is excessive noise in the rear channels perform the following procedure.
Solution:
Add the 100 ohm resistor as described below.
REF DESCRIPTION PART NUMBER
N/A
100 OHM 1/6 W RESISTOR
1-215-397-00
Cut the foil trace between pin 55 of IC401 and R407. Add the 100 ohm resistor from R413 (the side closest to IC404) to JW358. See diagram below.
Reference: TOKYO FAX A0700661
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PRINTED IN USA