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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 TV Products
No.

CSV-1

Model:

KV-20M42, KV-20S90

535

Subject: Potential 30MHz Interference Symptom: (1341)

Date: May 17, 2001

When the TV is on; other devices may pick up interference from the TV.

Solution:

In order to improve the slight possibility of interference at 30MHz a Ferrite Core has to be added to the AC cord at the end closest to the rear cabinet. See fig 1

Ferrite Core

Fig 1

Loop the AC cord around the Core and then snap it

Model

Description

Part Number

Serial Number range that need this Ferrite Core 4170001-4175650 4000001-4000150

KV-20M42 KV-20S90

Ferrite Core Ferrite Core

1-500-386-11 1-500-386-11

Reference: PCN 604299 AUTOFLAGGED - YES

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