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Car Stereo CSA-14
Service Bulletin
Sony Service Company - Technical Services
A Division of Sony Electronics Inc.
Sony Drive, Park Ridge, New Jersey 07656
Model: XR-U500/U700/U800 No. 344
Subject: Noise Heard From Speakers When Using Cellular Date: November 30, 1994
Phone.
Symptom:
(54) Noise may be heard from the speakers when using a cellular phone.
Solution: If the customer complains of this problem, implement the following changes on the
Main board.
REF DESCRIPTION PART NUMBER
- RESISTOR, 33K, 1/4 W 1-249-435-11
1- Cut the traces as indicated by the "X".
2- Add 33K resistors between the following points:
IC301 pin 11 and IC201 pin 5
IC301 pin 13 and IC201 pin 3
IC301 pin 24 and IC101 pin 5
IC301 pin 26 and IC101 pin 3
Reference: Tecnical News ME-94019 PRINTED IN USA
Autoflagged - NO
PRINTED ON RECYCLED PAPER
Audio Products Service Bulletin No. xxx
Audio Products Service Bulletin No. xxx
Filename: CAR0344.SB
Directory: J:\SBDOC\NOV94
Template: C:\WINWORD\S_BULL.DOT
Title:
Subject:
Author: Hoyt Wing Lee
Keywords:
Comments:
Creation Date: 11/30/94 1:53 PM
Revision Number: 2
Last Saved On: 11/30/94 1:53 PM
Last Saved By: Hoyt Wing Lee
Total Editing Time: 0 Minutes
Last Printed On: 04/01/96 10:04 AM
As of Last Complete Printing
Number of Pages: 3
Number of Words: 150 (approx.)
Number of Characters: 856 (approx.)