SERVICE BULLETIN
Bulletin Part Number: 268795-B1
Product: Lifestyle® 18, 28, 35 Bass Module - PS18, PS28, PS48
Subject: Failed output ICs U1, U2, and U3.
Disposition: If U1, U2, or U3 fails in a PS18, PS28 or PS48 bass module that has amp PCB 266999-0, replace the amp PCB with part number 267332-0, which has improved output ICs.
Note: The improved outputs ICs U1, U2, and U3, part number 267330-001 are not compatible with the older amp PCB part number 266999-0. Phase in of the new amp PCB began in November 2003 and was completed in January 2004.
Earlier production amp PCB part number: |
266999-0 |
U1, U2, U3 identification markings: |
TDA7265 |
|
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Later production amp PCB part number: |
267332-0 |
U1, U2, U3 identification markings: |
LM4766T |
ECN: 33251
FRACAS: 362
Date Issued: 03/2004
Bose Corporation; The Mountain, Framingham, Ma. 01701-9168
Service documentation available online at http://serviceops.bose.com
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