PSB F-475

This Bulletin Number is PSB F-475
APC : 376, 720
Date: February 1996
Deadline Date:February 1997

Memo To: PSB Mailing List

From: Radio Products Group/Product Services, Plantation

Subject: Changeover from "AN" to "BN" VISAR model radios.

Scope: Upgraded BN VISAR models will be replacing AN VISAR models. The BN controller board is 0.020 inches thicker than the AN board. These changes have some compatibility ramifications if replacement of any of the parts listed below is required.

Replacing Controller Boards:
  Once the inventory of AN controller boards is depleted, all replacements MUST be with BN versions of controller boards, front covers and audio jack plugs.
  As long as inventory lasts, AN controller boards can be replaced with AN version boards.
  AN and BN controller boards are not directly interchangeable. (See Note)

Replacing Front Covers:
  AN front covers can continue to be replaced with the AN version, if the radio has AN controller board.
  AN front covers will be available after initiation of BN models.
  AN front covers and BN front covers are not directly interchangeable. (See Note)
  If an AN front cover is to be replaced with a BN front cover, then the controller board and audio jack plug must also be upgraded to BN versions. (See Note)

Replacing Rear Covers:
  AN rear covers will continue to be available after initiation of BN models.
  BN rear covers cannot be assembled with AN front covers.
  AN and BN rear covers can be assembled with BN front covers.


NOTE : Refer to FMR-1787-1 included in Service Manual 68P81073C75-B for a complete list of applicable part numbers for the models number being serviced.
This bulletin is provided for information only.