Bose SE-1 User manual

©2009 Bose Corporation Reference Number 027574-SM Rev. 00
Service Manual
SE-1 Audio/Video Switcher
AUTO-SW
LS
MRI-CD20
ZONE
OPTICAL DIGITAL AUDIO
S
E
IR
SENSE
M
US
I
CENT
E
COAX DIGITAL AUDIO
ANALOG AUDIO LEFT
ANALOG AUDIO RIGHT
COMPOSITE VIDEO
S-VIDEO
SOURCE
12
3
4
12VDC
OUTPUT
1
OUTPUT
2
VOLUME

2
CONTENTS
CAUTION: The Bose®SE-1 Audio/Video Switcher
contains no user-serviceable parts. To prevent warranty infractions,
refer servicing to warranty service stations or factory service.
WARRANTY INFORMATION
The Bose SE-1Audio/Video Switcher is covered by a 1-year transferable limited warranty.
PROPRIETARY INFORMATION
THISDOCUMENTCONTAINSPROPRIETARYINFORMATIONOF
BOSE CORPORATION WHICH IS BEING FURNISHED ONLY FOR
THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT
BYAN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF
THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR
USED FOR ANY OTHER PURPOSE.
Contents ............................................................................................................................................2
Warranty Information.........................................................................................................................2
Product Description .........................................................................................................................3
Specifications:...................................................................................................................................3
The Bose® SE-1 System Expander ...............................................................................................4
Connecting the SE-1 system expander...................................................................................... 5-8
Output connections..........................................................................................................................6
Connecting to the MRI or CD20 music center...............................................................................6
Adding a TV on/off sensor ...............................................................................................................8
Support for IR control of other rooms or zones............................................................................8
Control inputs/outputs .....................................................................................................................9
Part List Notes ..................................................................................................................................9
Electrical Part List, Main PCB ................................................................................................. 10-17
Troubleshooting ....................................................................................................................... 18-19
Service Manual Revision History .................................................................................................20

3
PRODUCT DESCRIPTION
The Bose®BUILT-INvisible®SE-1 system expander simplifies the wiring and hookup of the
BUILT-INvisible TA-1 amplifier and other home theater components such as DVD, digital satellite
television, etc. It creates a highly flexible, easy-to-install and easy-to-use home theater system.
Features:
• Five audio/video inputs. Four digital inputs (two with optical connections)
•Fully integrates with the BUILT-INvisibleTA-1theateramplifierandthe BUILT-INvisibleCD-20
and CD-50 music centers
• IR control allows one remote to operate all of the home theater equipment including the Bose
BUILT-INvisible music center
• Simple installation
• TV sensing automatically switches sources and turns on the amplifier when the TV is turned on
• Small, remote, IR sensor
Specifications:
Power Supply 12VDC, 400mA
Control Inputs/Outputs
IR Sensor: For use with included IR sensor assembly
AMP: RS-232C, for connecting to the TA-1 theater amplifier
Music Center: TTL-level, for connecting to the CD-20or CD-50 music centers
TV Sense: For use with logic level (0 - 5VDC) TV sensing devices (not included)
Audio/Video Inputs
5Audio (L/R) 25K input impedance
5 Video (NTSC composite) 75 input impedance
5 Video (Y/C S-video) 75 input impedance
4 S/PDIF (coaxial) 75 input impedance
2 Toslink (optical) S/PDIFAudio/video outputs
3Audio (L/R) 265 output impedance
2 Video (NTSC composite) 75 output impedance
2 Video (Y/C S-video) 75 output impedance
1 S/PDIF (coaxial) 75 output impedance
Indicators
Power
Command
Selected source (6)
Push-button Controls (for installer use)
Volume up and down
Source selection
Dimensions 1"H x 10"W x 7.25"D (2.5 cm x 25.5 cm x 18.5 cm)
Weight 3 lb (1.35 kg)

4
The SE-1 system expander is designed for use with the Bose TA-1 theater amplifier. It provides
switching for all the home theater sources – DVD, DBS, VCR, etc. – and provides control infor-
mation to the TA-1 amplifier.
Features
• Designed for remote, out-of-sight installation
• Fully integrated with the BUILT-INvisible® TA-1 amplifier and BUILT-INvisible music centers
• Small, remote IR sensor
• Five audio/video inputs. Four digital inputs (two with optical connections)
• Logic-level TV sense input can be used to automatically switch sources and turn on the
amplifier when the TV is turned on
• IR controlled
• Works with both the two-zone CD20 music center and the four-zone CD50 multi-room
interface (MRI).
Figure 1. Carton contents
The carton contains:
• SE-1 system expander
• 3.5 mm to mini-DIN music center serial cable
• Bose source cable
• IR sensor
• Digital patch cable
• Composite video patch cable
• S-Video patch cable
• Power pack
CAUTION: Use the SE-1 system expander only with the supplied power pack, which is UL listed.
Other required parts
In addition to the parts supplied with the system expander, installing the system requires use of
the appropriate Bose source plate and the Bose digital source plate. System operation requires
the use of a universal or “learning” IR remote control.
The Bose®SE-1 System Expander
CTL
CTL
CTL
®
+
OPTICAL DIGITAL
AUDI O
OUTPUTS INPUTS
SELECTEDSOURCE
SOURCE
SELECT
MP
AMP
TV S
IR SENSE
EXT
NRMAL/LS
MRI/CD20
MUS
I
M
ND
12
3
4
5
12VDC
POWER
2
1
OUTPUT
COAX DIGITAL
AUDIO
ANALOG AUDIO
LEFT
ANALOG AUDIO
RIGHT
COMPOSITE
VIDEO
S-VIDEO
VOLUM E
SE-1 system expander IR sensor
Bose source cable
Power pack
S-Video patch cable
Mini-DIN to 3.5 mm
music center serial data
Composite video
patch cable
Digital patch
cable

5
Figure 2. Overview of SE-1 system expander connections
In determining which jacks to use on the SE-1 system expander, use the following guidelines:
Input connections
• Connect the A/V sources – DVD, DSS, etc. – to the five sets of input jacks on the right side of
the SE-1 system expander connection panel.
• Components that use optical cable must connect to Input 1 or 2. If a component has both
optical and coaxial outputs, connect either of them.
• For digital components that do not require an optical digital jack, use the COAXIALDIGITAL
AUDIO jack.
• Be sure to connect the left and right analog channels of the component to the proper left or
right jacks.
Note: Even if using digital audio, we recommend that you also connect the L/R analog audio.
• For components that have S-Video, use the S-VIDEO jack.•For components that do not have
S-Video, use the COMPOSITE VIDEO jack.
Connecting the SE-1 system expander
ANTENNA
LOCATE
MUSIC
CENTER
BOSE CD
FM FM
12
34
®
OPTICAL DIGITAL
AUDIO
OUTPUTS INPUTS
SELECTED SOURCE
SOURCE
SELECT
IR SENSE
EXT
NRMAL/LS
MRI/CD20
12
3
4 5
2
1
OUTPUT
COAX DIGITAL
AUDI O
ANALOG AUDIO
LEFT
ANALOG AUDIO
RIGHT
COMPOSITE
VIDEO
S-VIDEO
VOLU ME
Bose
source plate
Bose
multi-room
interface
Bose SE-1
system expander
Digital
audio
Music center
serial cable
L/R audio + video
L/R audio
To video IN TV audio
OUT
L/R audio
OUT
TV
IR sensor
S-Video
DVDSSD
Bose
source
cables
Digital
audio
Bose
®
digital
source plate
CTL
CTL
CTL

6
Output connections
Note: OUTPUT 1 and OUTPUT2 jacks are linked internally. They are individually buffered, but
always contain the same signal, both COMPOSITE VIDEO and S-VIDEO.
• Connect the COMPOSITE VIDEO and S-VIDEO outputs to the respective inputs on the TV.
Note: The SE-1 system expander does not convert composite input signals to S-Video. There-
fore, you must connect the composite and the S-Video outputs to the TV if you have composite
and S-Video sources. Or, use a composite video to S-Video converter.
Connecting to the MRI or CD20 music center
Using the music center serial cable:
1. Insert the mini-DIN connector into the jack marked MUSIC CENTER on the SE-1 system
expander.
2. Insert the 3.5 mm connector into the SERIAL DATA jack on the back of the CD20 music center
or MRI. This connection delivers the remote command signals for audio source control.
Connecting to the TA-1 amplifier
1. Using the Bose®source cable:
• Insert one connector into theAMP output jack on the SE-1 system expander.
• Insert the other connector into the Bose source plate.This cable carries the audio/video source
signals from the SE-1 system expander to the source plate. Use Bose system cable to
connect the back of the Bose source plate to the TA-1 amplifier.
2. Using the digital audio patch cable:
• Insert one connector into the COAX DIGITALAUDIO output jack on the SE-1 system expander.
• Insert the other end into RCA jack #1 on the Bose digital source plate. Use Cat-5 cable from the
back of the digital source plate to send the digital audio signal to the TA-1 amplifier.
Connecting the IR sensor
• Insert the connector end into the IR SENSE jack of the SE-1 system expander.
• Decide where to place the IR sensor on or near the TV. Remove the protective strip from its
adhesive surface and affix the sensor to a flat, dry surface. The sensor carries IR signals
issued by the remote control to the SE-1 system expander, which conveys them to the TA-1
amplifier and the CD20 music center or MRI.
Connecting the power supply
1. Insert the small connector end of the power pack cable into the 12VDC power jack on the
SE-1 system expander.
2. Plug the power pack into a nearby wall outlet.The LED on the lower right corner of the SE-1
system expander should light when the power pack is connected to power.
Connecting the SE-1 system expander (continued)

7
Connecting the SE-1 system expander (continued)
AUX mode
In this recommended mode of operation, for use only with the CD50, the SE-1 system expander
updates the Personal®music center (PMC) display of output levels, including volume, to stay in
sync with the TA-1 amplifier levels. So any system control adjustment, made at either the PMC
or the IR remote control, affects both the PMC and the amplifier.
When the system is not inAUX mode, eventually the PMC and TA-1 settings no longer match.
For example, using the PMC to select and control the CD player causes the volume and other
levels to automatically resume previous settings that are likely to conflict with the TA-1 ampli-fier
settings. Using theAUX mode prevents this out-of-sync situation.
There is one limitation to this mode, however. It does not allow the AUX source on the multi-room
interface (MRI) to serve as audio source for the home theater room. Instead, you must use the
AUX source on the PMC for home theater.
Whenever theAUX source is selected, both the SE-1 system expander and the TA-1 amplifier
recognize it as a TA-1 video input, while the audio (routed through the MRI to theTA-1 amplifier)
is ignored. So when you pressAUX on the PMC orAUX on the IR remote, the TA-1 amplifier will
switch, as needed, to its VIDEOAUDIO input (and the last digital input selected).
In fact, with any source change (setting the SE-1 to video input 2, for example), the SE-1 system
expander automatically changes the CD50 source toAUX, even if the CD50 had been off.
Setting the SE-1 to AUX mode
To set the SE-1 system expander toAUX mode, move theAUX DIP switch to the up position
(towards the volume button).
Note: Also set the TA-1 toAUX mode. To do that, move the EXT DIP switch to the down posi-
tion (towards the wall).
Operation notes:
• The first time you use the system inAUX mode, you must adjust the PMC’s volume level to put
it in sync with the TA-1 volume level. To do this, use the PMC to:
1.Select any source.
2.Lower its volume to 0.
3.Raise the volume to the preferred level.This will synchronize the PMC volume to the TA-1
volume.
• Each time the SE-1 system expander source changes (Video 1 – 5) it causes the CD50 to
select theAUX source. While the audio plugged into theAUX input on the MRI will not play (effec-
tively eliminating an analog input to the home theater room), you have three other inputs. Instead
of receiving audio from the MRI, the TA-1 amplifier automatically selects VIDEOAUDIO and the
lastdigital input.
• TheAUX input is available for use in other rooms in the home. TheAUX source becomes the
Home Theater mode only in the home theater room.
• When you switch from any audio source (CD, FM, Video 1, etc.) toAUX on the PMC, the TA-1
amplifier switches from MUSICAUDIO input to VIDEOAUDIO input. Switching back to an audio
source switches the input back.

8
Connecting the SE-1 system expander (continued)
Adding a TV on/off sensor
The SE-1 system expander supports a logic-level TV on/off sensing device (not included). When
the logic input is high (4 – 5VDC), the SE-1 system expander sends an ON command to the
TA-1 theater amplifier. When the logic input is low (0 – .5VDC), the SE-1 system expander sends
an OFF command to the TA-1 theater amplifier.
To connect a TV sensing device, wire the ground from the sensor to the sleeve of a 3.5 mm
stereo plug (not included). Wire the logic-level input signal to the ring of the 3.5 mm plug.
Note: The tip of the TV sensor jack contains +5VDC for future use.
In general, you should not use the TV sensing functionality with macros that turn the TV on and
off. If a TV has discrete ON/OFF commands you should use those commands in a macro rather
than a TV sensor.
DIP switch settings
The SE-1 system expander contains a 3-position DIP switch. The first position is not used at this
time, and must be left in the OFF position. Switch 3 should be set according to which music
center is being used, the MRI or CD20 music center.
Switch Label Description
1 MC Must be in the OFF position (closest to edge)
2 AUX ON forAUX mode; OFF for non-AUX mode
3 MRI or CD20 ON for CD20; OFF for MRI
Support for IR control of other rooms or zones
The SE-1 system expander supports IR codes for control of Zone 2 for the CD20 and rooms
B, C, and D for the CD50. The Pronto CCF file named BoseZoneCodes.ccf contains all the
IR codes for the supported functions in these additional rooms or zones. Refer to this file for
information on those functions.
Checking for proper operation
1. Make sure the power LED, located on the lower right of the SE-1 system expander
con-nection panel, lights up. If not, check the connections at both ends of the power pack.
2. Use the SOURCE SELECT button to the left of the OUTPUT jacks to make sure all sources
are connected and operational.
• The LEDs (1 – 5) above the INPUT jacks will light to indicate the selected input source.
3. You may also use the VOLUME up and down buttons to check for audio signals from the
selected input source.
4. Pressing the local push buttons or sending IR commands to the SE-1 system expander
causes it to send commands to the music center or the TA-1 amplifier, causing the
command LED to blink. If the LED blinks for local push buttons but not for IR commands,
check the IR sensor connection and make sure the IR codes you are using are correct.

9
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.
IR Sensor: For use with included IR sensor assembly
AMP: Control (RS-232) and line-level audio (output) for connecting to the TA-1 theater amplifier
Pin Description
1 Spkr data (future use)
2 Turn-on signal (future use)
3 Fixed Left (output of main L/R switcher)
4 Fixed Right (output of main L/R switcher)
5 Ground
6 TA-1 Rx
7 TA-1Tx
8 Ground
Shell Ground
Music Center: Control (TTL-level) and line-level audio (input), for connecting to the CD20 or
CD50 music center
Pin Description
1 Music Center Tx
2 Music Center Rx
3 Fixed Left (input 6 to main L/R switcher)
4 Fixed Right (input 6 to main L/R switcher)
5 Ground
6 Turn-on signal
7 Spkr data
8 Antenna
Shell Ground
TV Sense: For use with logic-level (0 – 5VDC) TV sensing device (not included)
Control inputs/outputs
876
543
21
876
543
21

10
ELECTRICAL PART LIST
MainPCB
Resistors
Reference
Designator
Description Vendor Part
Number
Note
RP1 RES NET, 270 X 9 OHMS, SIP 451-012 4
RP2 RES NET, 10K X 5 OHMS, SIP 451-015 4
R1 51K, CF, 1/4W, 5% 411-618 4
R2 51K, CF, 1/4W, 5% 411-618 4
R3 51K, CF, 1/4W, 5% 411-618 4
R4 51K, CF, 1/4W, 5% 411-618 4
R5 51K, CF, 1/4W, 5% 411-618 4
R6 51K, CF, 1/4W, 5% 411-618 4
R7 51K, CF, 1/4W, 5% 411-618 4
R8 51K, CF, 1/4W, 5% 411-618 4
R9 51K, CF, 1/4W, 5% 411-618 4
R10 51K, CF, 1/4W, 5% 411-618 4
R11 1M, CF, 1/4W, 5% 411-801 4
R12 1M, CF, 1/4W, 5% 411-801 4
R13 1M, CF, 1/4W, 5% 411-801 4
R14 1M, CF, 1/4W, 5% 411-801 4
R15 1M, CF, 1/4W, 5% 411-801 4
R16 1M, CF, 1/4W, 5% 411-801 4
R17 1M, CF, 1/4W, 5% 411-801 4
R18 1M, CF, 1/4W, 5% 411-801 4
R20 1M, CF, 1/4W, 5% 411-801 4
R21 1M, CF, 1/4W, 5% 411-801 4
R22 51K, CF, 1/4W, 5% 411-618 4
R23 51K, CF, 1/4W, 5% 411-618 4
R26 549 OHMS, MF, 1/8W, 1% 441-5490 4
R27 120 OHMS, CF, 1/4W, 5% 411-403 4
R28 220 OHMS, CF, 1/4W, 5% 411-409 4
R29 220 OHMS, CF, 1/4W, 5% 411-409 4
R30 220 OHMS, CF, 1/4W, 5% 411-409 4
R31 220 OHMS, CF, 1/4W, 5% 411-409 4
R32 270 OHMS, CF, 1/4W, 5% 411-411 4
R33 270 OHMS, CF, 1/4W, 5% 411-411 4
R34 270 OHMS, CF, 1/4W, 5% 411-411 4
R35 270 OHMS, CF, 1/4W, 5% 411-411 4
R36 270 OHMS, CF, 1/4W, 5% 411-411 4
R37 270 OHMS, CF, 1/4W, 5% 411-411 4
R38 5.1K, CF, 1/4W, 5% 411-518 4
R39 5.1K, CF, 1/4W, 5% 411-518 4
R40 5.1K, CF, 1/4W, 5% 411-518 4
R42 1.2K, CF, 1/4W, 5% 411-503 4
R43 47K, CF, 1/4W, 5% 411-617 4
R44 10K, CF, 1/4W, 5% 411-601 4
R45 10K, CF, 1/4W, 5% 411-601 4
R46 10K, CF, 1/4W, 5% 411-601 4
R47 10K, CF, 1/4W, 5% 411-601 4
R49 10K, CF, 1/4W, 5% 411-601 4