Service Manuals, User Guides, Schematic Diagrams or docs for : Sony Car Stereo Service Bulletin Car0344

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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.)

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