Obtaining System Information from the Media Center Display..................................................62
DVD Lock options ..................................................................................................................... 63-64
Setting a password and restriction level......................................................................................63
DVD Lock Bypass............................................................................................................................64
321 Series II System Date of Manufacture Information...............................................................64
Glossary of Terms...........................................................................................................................65
Service Manual Revision History...................................................................................................66
1
SAFETY INFORMATION
1. Parts that have special safety characteristics are identified by the symbol on schematics
or by special notes on the parts list. Use only replacement parts that have critical characteristics
recommended by the manufacturer.
2. Make leakage current or resistance measurements to determine that exposed parts are
acceptably insulated from the supply circuit before returning the unit to the customer.
Use the following checks to perform these measurements:
A. Leakage Current Hot Check-With the unit completely reassembled, plug the AC line cord
directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a
leakage current tester or a metering system that complies with American National Standards
Institute (ANSI) C101.1 "Leakage Current for Appliances" and Underwriters Laboratories (UL)
UL6500 / UL60065 / IEC 60065 paragraph 9.1.1. With the unit AC switch first in the ON position
and then in OFF position, measure from a known earth ground (metal waterpipe, conduit, etc.)
to all exposed metal parts of the unit (antennas, handle bracket, metal cabinet, screwheads,
metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical
return path to the chassis. Any current measured must not exceed 0.5 milliamp. Reverse the
unit power cord plug in the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE
LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE
ELIMINATED BEFORE RETURNING THE UNIT TO THE CUSTOMER.
B. Insulation Resistance Test Cold Check-(1) Unplug the power supply and connect a jumper
wire between the two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure
the resistance with an ohmmeter between the jumpered AC plug and each exposed metallic
cabinet part on the unit. When testing 3 wire products, the resistance measured to the product
enclosure should be between 2 and infinite MOhms. Also, the resistance measured to exposed
input/output connectors should be between 4 and infinite MOhms. When testing 2 wire products, the resistance measured to exposed input/output connectors should be between 4 and
infinite MOhms. If it is not within the limits specified, there is the possibility of a shock hazard,
and the unit must be repaired and rechecked before it is returned to the customer.
CAUTION: The Bose® 3•2•1 Series II Home Entertainment System
contains 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.
WARRANTY
The Bose® 3•2•1 and 3•2•1GS Series II Home Entertainment Systems are covered by a limited
1-year transferable warranty.
2
PRODUCT DESCRIPTION
The 3•2•1 Series II Home Entertainment System is the replacement for the 3•2•1 and 3•2•1GS
Series I Home Entertainment Systems. It uses the same system concept of a console with a
dedicated bass module with TrueSpace
arrays.
The console will play video DVDs, DVD-R and DVD+R discs, audio CDs, Video CDs, CD-R and
CD-RWs, and MP3 CDs. MP3 disc tracks must be burned in a single closed session. The MP3
disc format must be ISO9660 and each file must have an “.mp3” extension and have no other
periods in the filename.
The bass module electronics house some signal processing, power supplies and amplification
for the console. The console and bass module are not compatible with the 3•2•1 Series I console and bass module. They cannot be used to replace the other Series components. The
speaker arrays are the same as currently used on the 3•2•1 and 3•2•1GS systems. The system
includes an enhanced universal type IR remote control similar to that used on the 3•2•1GS
Series I system. The remote is non-repairable.
The 3•2•1 Series II uses standard 3•2•1 arrays with a cloth grille. The arrays are graphite in
color. The 3•2•1GS Series II systems use the GemstoneTM arrays in both graphite and silver.
The array cable color matches the array color. The console for both 321 and 321GS systems is
graphite with a silver front bezel. The bass module is graphite, as is the IR remote control.
TM
signal processed surround sound from 2 satellite
ACCESSORIES
The Bose 3•2•1 and 3•2•1GS Series II Home Entertainment Systems shelf speakers are compatible with Bose mounting accessories, including the UB-20 wall brackets, UFS-20 floor stands
and UTS-20 table stands.
Console Inputs:VIDEO, CAB/SAT, AUX
Video Outputs:Composite Video, S-Video, Component Video
External Antennas:FM, 75 Ohm F-Connector (PAL, Europe)
AM Loop, 2.5 mm mono connector
Maximum Ambient Temperature:45 degrees C
Low Frequency Cut-off (typical):
Arrays:3•2•1 Array Cube: 180 Hz
3•2•1GS Array Cube: 212 Hz
Bass Module:45 Hz
Woofer Impedance:1.5 Ohms nominal DC resistance single woofer
Weights:
3•2•1 Series II Packed System:47.9 lb (21.7 kg)
3•2•1GS Series II Packed System:44.1 lb (20.0 kg)
Console:6.8 lb (3.08 kg)
Bass Module:24.9 lb (11.77 kg)
3•2•1 Arrays, each:3.0 lb (1.40 kg)
3•2•1GS Arrays, each:1.1 lb (0.50 kg)
IR Remote Control (batteries installed):0.44 lb (0.20 kg)
Dimensions:
Console:13.8 x 10.0 x 3.2 inches (34.9 x 25.3 x 8.2 cm)
Bass Module:14 x 7.5 x 20.1 inches (35.6 x 18.4 x 51.1 cm)
Bass Module internal volume:1205 cubic inches (19.7 liters)
3•2•1 Arrays:7.9 x 5.3 x 3.4 inches (200 x 134 x 86 mm)
3•2•1GS Arrays:5.6 x 2.6 x 4.2 inches (142 x 65 x 106 mm)
IR Remote:9.0 x 2.6 x 1.2 inches (229.6 x 64.8 x 31.2 mm)
Distortion and Noise:-78 dB THD+N, unweighted, 22-22 kHz for a
1 kHz signal at -1 dB -90 dB THD+N,
unweighted, 22-22 kHz for a 1 kHz signal at -10 dB
Dynamic Range:-90 dB THD+N, unweighted,
22-22 kHz for a 1 kHz signal at -60 dB
Distortion:< 0.1% @ 0.5 W
Output Noise:< 400 mVrms, A-weighted
4
SPECIFICATIONS
System Specifications (continued):
Noise when Muted:< 400 uVrms, A-weighted
DC Offset:< 50 mVdc, all channels
Channel Balance:+/- 1.5 dB for all volume settings
Channel Separation:> 40 dB @ 1 kHz, > 30 dB @ 10 kHz, stereo mode
Console Specifications:
Compression Formats Supported for discs
inserted into the DVD/CD drive:AC-3, MP3, DTS, MPEG-1 (VCD), MPEG-2
Compression Formats NOT Supported for
discs inserted into the DVD/CD drive:SACD Format (Sony), MLP
Digital Formats Supported for sources
connected to the digital inputs:AC-3, DTS, AAC (Japan only), PCM
Analog Input Characteristics:
Maximum source signal for ADC full scale:2 Vrms
Minimum source signal for ADC full scale:200 mVrms
Input Impedance:100k Ohms nominal +/- 10%
Input Coupling:AC coupled to remove source DC offset
Output level from FM (mono, 75 kHz dev):0.3 Vrms nominal
Output level from AM (30% mod, 100 dBuV): 0.2 Vrms nominal
Source Impedance at 1 kHz:1560 Ohms nominal, +/- 10%
Output Coupling:AC
S/PDIF Coaxial Input Characteristics:
Sampling Rates Accommodated:38 kHz, 44.1 kHz, 48 kHz
Number of bits recognized:16, 20 and 24
Input Impedance:75 Ohms +/- 10%
Error Checking and Handling:Implements full error checking and handling,
considering CRC, validity bit, loss of lock,
parity error, and bi-phase error.
Input Coupling:AC
5
SPECIFICATIONS
Console Specifications (continued):
Optical S/PDIF Input Characteristics:
Sampling Rates Accommodated:38 kHz, 44.1 kHz and 48 kHz
Number of bits recognized:16, 20 and 24
Error Checking and Handling:Implements full error checking and handling,
considering CRC, validity bit, loss of lock,
parity error, and bi-phase error.
Input Connector:TOSLINK
Volume Control:0 dB to full attenuation in 100 steps (100 - 0 indi-
cated). 0 volume causes the amplifiers to mute.
Film EQ:Selectable on or off
Tone Controls:
Treble Control:Range of -12 to +12 dB in 11 steps
Bass Control:Range of -12 to +12 dB in 18 steps
Usable Sensitivity (mono, 1080 kHz):48 dB nominal / 54 dB limit
Adjacent Channel Selectivity:23 dB nominal / 18 dB limit
Alternate Channel Selectivity:30 dB nominal / 25 dB limit
Image Rejection:40 dB nominal / 35 dB limit
Auto Stop Level:58 dBuV/m +/- 5 dB
Signal to Noise Ratio:50 dB nominal / 45 dB limit
Distortion ( 30% modulation):1.0% nominal / 1.4% limit
Frequency Response:220 Hz: -3 dB nominal / -6 dB limit
2.0 kHz: -3 dB nominal / -6 dB limit
7
ELECTROSTATIC DISCHARGE SENSITIVE (ESDS)
DEVICE HANDLING
This unit contains ESDS devices. We recommend the following precautions when repairing,
replacing or transporting ESDS devices:
• Perform work at an electrically grounded work station.
• Wear wrist straps that connect to the station or heel straps that connect to conductive
floor mats.
• Avoid touching the leads or contacts of ESDS devices or PC boards even if properly
grounded. Handle boards by the edges only.
• Transport or store ESDS devices in ESD protective bags, bins, or totes. Do not insert
unprotected devices into materials such as plastic, polystyrene foam, clear plastic bags,
bubble wrap or plastic trays.
PART LIST NOTES
1. This part is not normally available from Customer Service. Approval from the Field Service
Manager is required before ordering.
2. The individual parts located on the PCBs are listed in the Electrical Part List.
3. This part is critical for safety purposes. Failure to use a substitute replacement with the
same safety characteristics as the recommended replacement part might create shock, fire
and/or other hazards.
4. This part is referenced for informational purposes only. It is not stocked as a repair part. Refer
to the next higher assembly for a replacement part.
ACCESSORY KIT, 321 II US, GRAPHITE
ACCESSORY KIT, 321 II GS, US, GRAPHITE
ACCESSORY KIT, 321 II GS, US, SILVER
REGION 1
ARRAY ASSY, 321 II, GRAPHITE
ARRAY ASSY, 321 II GS, GRAPHITE
ARRAY ASSY, 321 II GS, SILVER
GRAPH
CARTON, RSC, 321 II
CARTON, RSC, 321 II GS
GUIDE, OWNERS, 3-LANG 321 II
DVD, SETUP AND DEMO, 321 II, NTSC
273041-011 1
273041-111 1
273041-311 1
270900-11119 1
255198-001 2
269990-001 2
269990-003 2
273031-61119 1 Dual
276333 1
277060 1
274559 1
277723 1
System
Voltage
Voltage
Voltage
10
1
2
3
4
910
ARRAYS (ITEM 10)
INSIDE EPS FOAM
12
6
5
7
8
11
8
13 14 15 16 17 18
19
Figure 1. 3
•2•1 Series II Home Entertainment System Packaging View
11
PACKAGING PART LIST
Item
Description Part Number Note
3•2•1 Series II Home Entertainment System Accessory Kit (see Figure 2)
Number
1
2 CABLE, AUDI O, DUAL RCA 185931-01
3 ANTENNA, FM DIPO LE, 75 OHM, F CONN 148589
4 CABLE, VI DEO, 6', YL 183200
5
6 ANTENNA, ASSY, AM, CD 20 199824-002
7 BAG, POLY,3 X 3 MIL 194392 4
8 BATTERY, CARBON, AA SIZE 147538
9 CABLE, STANDARD ARRAY, 9 PIN, GRAPHITE 255123-001