BOSE LIFESTYLE SA-2, LIFESTYLE SA-3 Schematic
Troubleshooting Tips
Lifestyle® SA-2 & SA-3 Amplifier
Refer to the Lifestyle® SA-2 & SA-3 Amplifier service manuals, part number 271720 for
schematics, PCB layouts and parts lists.
Preventative Repair Measures
Note: Perform the following on all units returned for repair.
Product Check Action
SA-2 & SA-3 N/A There is no preventative maintenance for this
product.
Troubleshooting Tips
Product Symptom Check Action
SA-2 & SA-3 No Audio Remote
dipswitch
settings
SA-2 & SA-3 No Power AMP IC’s and
fuse
SA-2 & SA-3 No Power U4 The +5V supply voltage may be shorted to
SA-2 & SA-3 No Power R10 Check for open 220 ohm resistor R10.
SA-2 & SA-3 Unit operates at full
volume, unable to
control volume
SA-2 & SA-3 Amp causes media
center display to lock
up and read BOSE
LIFESTYLE
SA-2 & SA-3 Distorted audio /
audio fades after a
few seconds
SA-3 No audio, led blinks
rapidly
SA-3 No Power Q155 and
C14 Capacitor C14 may be defective.
U9 and D14 Check for -8Vdc at regulator U9. If missing
U3 Volume control IC U3 (188941-001) may be
Software The software may need to be updated, Refer to
Q255
The unit will not turn on if the remote dipswitch
settings are incorrect. See pages 2 – 12 of this
document for instructions.
Amplifier IC’s U150 and U250 may be defective.
Check for visible damage or shorts between
pins 7&8 and pins 14&15. AC mains fuse F1
may also be open.
U150,U250 170156 SA2 Only
U150, U250 275177-001 SA3 Only
F1 177311-
03150
ground through U4 pin 1. Replace IC with part #
303687-001.
Part # 181895-2200.
Part # 191470-473.
replace U9 (260688-08). D14 (135247-5231)
may also be shorted.
defective.
pages 13 - 15 for procedure.
To determine if the amp IC’s U150 and U250
are defective, check for shorts on Q155 and
Q255. If they measure a short, remove the amp
IC’s and measure again. If the short is still
present, replace the transistors in addition to the
amp IC’s
SA2 &
SA3
1
Setting Up Your Lifestyle
Model AV-18/38/48 media center setup
CAUTION: Before making connections, turn the Lifestyle® system o and disconnect the media
center from the AC (mains) power outlet. DO NOT plug the ampli er into an outlet until you have
completed all other connections.
English
Figure 5
Lifestyle®stereo ampli er to
AV-18/38/48 media center
connections
1. Insert one end of the Bose
panel of the media center (Figure 5).
2. Insert the other end of the Bose®link A cable, into the Bose®link input connector on the
rear panel of the Lifestyle®stereo ampli er.
®
Stereo Ampli er
®
link A cable into the Bose®link output connector on the rear
Lifestyle®stereo ampli er rear panel
BoseLink
OUTPUT
BoseLink
INPUT
AV-18/38/48 media center rear panel
20-ft Bose®link A cable
2
Setting Up Your Lifestyle
®
Stereo Ampli er
Setting up RC-18S and RC-38S remotes
Your additional remote is shippe d from the factory already set up for a second room (room B).
To make sure that this remote will work with your home entertainment system, do the following to check the house code setting.
1. Remove the remote control battery cover and locate the microswitches (Figure 6).
2. Make sure that the house code settings (switches 1, 2, 3, and 4) match the house code
settings in your main room remote.
Note: If this remote is to be used beyond a second room, other switch settings will need to be
changed. See “Setting Up Additional Rooms For Soun d” on page 22.
Engli
s
h
Figure 6
Remote microswitches
House code switches
must match main room remote
ON
Check the expansion protocol setting in your system
For the Lifestyle®stereo ampli er t o work properly with your home enterta inment system, the
expansion protocol menu item must be set to Bose®link. To verify this:
1. Turn on your Lifestyle®DVD home entertainment system and your TV.
2. Press the System button on your main room remote.
3. Select t h e Audio tab and navigate down to Expansion Protocol.
®
4. Verify that the setting Bos e
5. Press the Exit button on the remote.
link is selected. If not, select Bose®link now.
3
Setting Up Your Lifestyle
Model AV-28 media center setup
CAUTION: Before making connections, turn the Lifestyle® system o and disconnect the media
center from the AC (mains) power outlet. DO NOT plug the ampli er into an outlet until you have
completed all other connections.
English
Figure 7
Lifestyle®stereo ampli er
to AV-28 media center
connections
1. Insert the 8-to-9-pin adapter into the SPEAKER ZONES 2 output connector on the rear
2. Insert one end of the Bose
3. Insert the other end of the Bose®link A cable, into the Bose®link input connector on the
®
Stereo Ampli er
panel of the media center (Figure 7).
®
link A cable into the 8- to-9-pin adapter.
rear panel of the Lifestyle®stereo ampli er.
Lifestyle®stereo ampli er rear panel
BoseLink
OUTPUT
BoseLink
INPUT
AV-28 media center rear panel
8-to-9-pin
DIN adapter
20-ft Bose®link A cable
4
Setting Up Your Lifestyle
®
Stereo Ampli er
Setting up the RC-28S remote
Your second remote is shipped from the factory already set up for Zone 2. To make sure that
this remote will work with your home entertainment system, do the following to check the
house code setting.
1. Remove the remote control battery cover and locate the microswitches (Figure 8).
2. Make sure that the house code settings (switches 1, 2, 3, and 4) match the house code
settings in your main room remote.
3. Make sure switches 5, 7, and 8 are up, and switches 6 and 9 are down.
Note: Refer to your Lifestyle
system in more than one r oom.
®
system owner’s guide for more information on operating your
Engli
s
h
Figure 8
Remote microswitches
House code switches must
match main room remote
ON
Setting the Zone 2 Protocol in your home entertainment system
For the Lifestyle®stereo ampli er to work properly with a Lifestyle
need to set the Zone 2 Protocol to Legacy mode (Figure 9).
1. Turn on your Lifestyle®DVD system and your TV.
2. Press the Settings button on your main room remote control.
3. Scroll down the menu to System Set up and press the Enter button.
4. Scroll down the menu to the last item, Zone 2 Protocol.
5. Press the right arrow remote button to change the protocol from Normal to Legacy.
®
media center, you will
Figure 9
Setting Zone 2 Protocol
6. Turn the system o and on again to ensure that the Zone 2 Protocol is reset to Legacy.
5
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