Bose 3-2-1 Service Manual

2
CAUTION: The Bose 3•2•1 and 3•2•1 GS Home Entertainment Systems
contain no user-serviceable parts. To prevent warranty infractions,
refer servicing to warranty service stations or factory service.
PROPRIETARY INFORMATION
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF
BOSE CORPORATION WHICH IS BEING FURNISHED ONLY FOR
THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT
BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF
THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR
USED FOR ANY OTHER PURPOSE.
Accessories
The Bose Model 3•2•1 and 3•2•1 GS home entertainment system shelf speakers are compatible
with Bose mounting accessories, including the UB-20 wall brackets, UFS-20 floor stands and
UTS-20 table stands.
The firmware located in the main PCB and display PCB's microprocessors can be updated by
means of an update CD. These update CDs are available from Bose
®
Product and Technical
Support at 800-233-4408 (Bose service centers only) or 800-367-4008 (Bose system owners)
and are automatically sent out to customers who have purchased the 3•2•1 system and filled out
and returned the software update card that came with their system literature. Service centers
can also download an ISO image of the latest firmware update file from the Service web site at
http://serviceops.bose.com and burn it onto a CD for use as an update disc.
Once you have the CD, simply power up the console, press the stop/eject button on the con-
sole, place the update CD into the drawer and close it and the update process will begin.
When the process is complete you may remove the update CD.
Check to verify that both the display PCB firmware and the main PCB firmware have updated
properly. You can do this by using the TAP commands or by a series of button presses on the
console front panel. Both of these methods are outlined later in this service manual.
Software Update Information
3•2•1 and 3•2•1 GS Home Entertainment System Differences
The 3•2•1 and 3•2•1 GS (Gemstone) home entertainment systems share the same basic com-
ponents. The bass module and bass module cable are identical. The console uses the same
electronic parts and most of the same chassis parts. The differences in the console are the
console firmware and the color of the silver front bezel and DVD drawer bezel. The product label
on the console reads "Model AV3-2-1GS Media Center". The arrays used on the two systems
are different. The standard 3•2•1 system uses the larger 60mm driver arrays, and are only
available in graphite. The 3•2•1 GS arrays utilize the smaller 50mm Jewel Cube
®
driver. These
arrays are available in graphite and silver.
The Bose 3•2•1 and 3•2•1 GS Home Entertainment Systems are covered by a limited 1-year
transferable warranty.
WARRANTY

Bose 3-2-1 Specifications

General

Brand	Bose
Model	3-2-1
Category	Home Theater System
Language	English