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BASIC OPERATION

Using Main Unit Controls

1

3

4

6

8

7

2

5

3. INPUT buttons

Switches the input source.

To play the TV sound:

 Turns the TV on and press the 

 button.

To play music from a USB flash drive:

 Connect the USB flash drive and 

press the 

 button.

To play music from a Bluetooth device:

 Press the 

 button. Refer to 

page 16 for connecting.

4.  /– buttons

Allows to adjust the volume by 1 step in the 0 to 30 range.

5.  SUB/– button

Allows to adjust the subwoofer level by 1 step in the 

10 to +10 range while 

listening to the sound. The default setting is 0.

6.  SOUND MODE button

Switches the sound mode of input sound as desired. The mode switches in the 

order of MUSIC 

o

 NEWS 

o

 MOVIE 

o

 MUSIC 

o

 each time the button is pressed. 

You can select the mode for each input source (TV, USB and Bluetooth).

MUSIC Mode:

 Gives concert hall-like sound effect. 

NEWS Mode:

 Allows to comfortably listen news programs.

MOVIE Mode:

 Creates powerful 3D sound effect suitable for enjoying movies.

To switch the sound output of the dual mono source (sound multiplex):

 

Press and hold for approximately 3 seconds. The sound output switches in the 

order of MAIN 

o

 SUB 

o

 MAIN+SUB 

o

 MAIN every time you press and hold.

7.  USB operation buttons

Allows operation when the input source is USB.

 button: Pressing once returns the audio to the beginning of the file being 

played. Pressing twice continuously returns it to the previous file. Then the 

audio will skip back to the previous file each time the button is pressed.

 button: Pressing during stop starts playback. Pressing during playback 

temporarily stops the audio.

 button: The audio skips to the next file each time the button is pressed.

1

2

3

4

6

5

7

1. 

(ON/STANDBY) button

Switches the power on/standby.

2. 

(Mute) button

Turns the audio off temporarily. Press again to cancel muting.

The Status indicator flashes when the audio is muted.

Muting will also be canceled when the volume is changed or the power is 

turned off and on.

1. 

 (ON/STANDBY) button/INPUT button

Switches the power on/standby. Also, switches the input source.

To turn the power on:

 Press once.

To turn the standby:

 Press and hold for 3 seconds. The indicators go off.

To input the source:

 Press once to switch. Switches in the order of TV 

o

 USB 

o

 

Bluetooth each time the button is pressed.

Auto Power On function:

 The unit automatically turns on when audio signal 

is output from the TV. To switch on/off this function, press and hold first 

and then 

 

 for about 3 seconds. When this function is set to on, the 

 

indicator flashes once. It flashes twice when this function is set to off.

Auto Standby function:

 The unit automatically enters the standby mode if 

the status with no operation and sound continues 5 minutes. To switch on/off 

this function, press and hold first 

, and then 

 

 for about 3 seconds. 

When this function is set to on, the 

 indicator flashes once. It flashes twice 

when this function is set to off.

2.  INPUT source indicators

Lights when the source is TV.

Lights when the source is USB.

Lights when the source is Bluetooth.

3. 

 

 VOLUME –/+ buttons

Allows to adjust the volume by 1 step in the 0 to 30 range.

Pressing the 

 

 buttons together will mute audio. The status indicator on the 

front of the main unit will flash. Press the VOLUME-/+ button again to cancel mute.

4. 

 SOUND MODE button

Switches the sound mode of input sound as desired. The mode switches in the 

order of MUSIC 

o

 NEWS 

o

 MOVIE 

o

 MUSIC 

o

 each time the button is pressed. 

You can select the mode for each input source (TV, USB and Bluetooth).

MUSIC Mode:

 Gives concert hall-like sound effect. 

NEWS Mode:

 Allows to comfortably listen news programs.

MOVIE Mode:

 Creates powerful 3D sound effect suitable for enjoying movies.

5.  SOUND MODE indicators

Lights according to the selected sound mode.

MUSIC

Lights in the music mode.

NEWS

Lights in the news mode.

MOVIE

Lights in the movie mode.

Lights when the input signal is Dolby Digital.

6.  Left channel speaker

7. Status indicator

Lights white when the power is on. It keeps flashing during mute. It flashes just 

once every time volume is adjusted or the input or sound mode is changed (Only 

when using remote controller). It goes off during standby.

8.  Right channel speaker

Using Remote Controller

How to Use Remote Controller

20°

20°

30°

30°

Remote control sensor

Approx.16 ft 
(5 m)

How to Replace Remote Controller Battery 

1

3

4

2

Positive (+) side

(Back side)

(Back side)

Use only a battery 
of the same type 
(CR2025).

Playing via Bluetooth Connection

Within 33 ft (10 m)

1

2

Steps 3 and 4 need to be performed 

on the Bluetooth device.

1.  Turn the unit on.

2. Press 

.

The 

 indicator flashes faster, and 

the pairing starts.

The pairing will end in about 30 seconds 
and the indicator starts flashing slowly. 
In this case, press 

 again.

3.  On the Bluetooth device, select 

the unit (Onkyo LS-B40) to 
make a connection.

For details on operation, see the instruction 
manual of the Bluetooth device.

If the operation does not start as 
normal within the 33 feet (10 m) 
range, get the Bluetooth device closer 
to the unit and retry the operation.

If a passcode (password, passkey or 
PIN code) is requested, enter "0000".

When the pairing is completed, the 

 indicator lights.

4. Start playback.

Using TV Remote Controller

Preprogrammed functions:

 This unit has been preprogrammed so that it can be 

operated with your existing TV remote controller. The functions that can be operated are volume 
control (+/–) and muting (

). If you want to use other functions or cannot operate with your 

TV remote controller, you can use the learning function as below to enable the operation. 

The mute state can be turned over each time you press the Mute button on your TV 
remote controller. In such case, you can synchronize the mute status of the unit and the 
TV by pressing and holding the Mute button on your TV remote controller.

To disable the preprogrammed function, press and hold first 

, and then 

 for about 

10 seconds. When the preprogrammed function is successfully disabled, 

 indicator 

flashes 3 times, then any TV remote controller cannot be used to operate the unit. When 
you want to re-enable the preprogrammed function, perform the same operation. When 
the preprogrammed function is successfully re-enabled, 

 indicator flashes once, then 

you can use any remote controller using preprogrammed function.

To control the preprogrammed functions:

 Varieties of TV remote controllers have been 

preprogrammed on this unit, which may lead to unintended operation from the other remote 
controller than your TV remote controller. In such case, press and hold first 

 and then 

, and then 

press either volume or mute button on your TV remote controller 2 or 3 times to turn on the controlling 
function. When the controlling function is set to on, the 

 indicator flashes twice, and then, the 

other remote controller cannot be operated.

Controlling function may not be set to some TV remote controllers.

To cancel the controlling function, press and hold first 

, and then 

 for about 10 seconds. When 

the controlling function is successfully cancelled, 

 indicator flashes once, then you can use any 

remote controller using preprogrammed function.

Learning function:

 You can operate the unit with a TV remote controller by assigning 

the functions to the buttons of the remote controller. Perform the following button 
operation, when the 

 indicator starts flashing, direct your TV remote controller to remote 

control sensor of this unit and press the button to assign on the TV remote controller 3 times. 
When the Learning function is successfully set, 

 indicator flashes twice. 

* Press 

 button first when pressing and holding the buttons together.

Learning function

Button operation (Press simultaneously for 3 seconds)

ON/STANDBY

 

o

 

 

o

 

VOLUME –

 

o

 

Troubleshooting

Check the items below if you have any problem.

Before requesting repair:

 If the unit does not work or accept control, try resetting the unit to its 

factory defaults and check if your problem is solved. Perform the following reset procedure.

1.  Press and hold the 

 button on the main unit and the 

 

 buttons for 10 seconds.

When reset is complete, the three INPUT source indicators flash and the unit automatically enters the 
standby mode.

Power

Can’t turn on the soundbar

Make sure that the power cord is properly 
plugged into the wall outlet. (

o

P.8)

Unplug the power cord from the wall 
outlet, wait 10 seconds or more, then 
plug it in again.

The soundbar turns off unexpectedly

The soundbar will automatically enter 
standby mode when Auto Standby 
launches. (

o

P.12)

The soundbar turns off and after 

restoring the power, it turns off again

The protection circuit has been activated. 
Remove the power cord from the wall 
outlet immediately. Make sure that all 
cables and input sources are properly 
connected, and leave the soundbar with 
its power cord disconnected for 1 hour. 
After that, reconnect the power cord and 
turn the power on. If the soundbar turns 
off again, unplug the power cord and 
contact your Onkyo dealer.

If smoke, smell or abnormal noise is produced 
by the soundbar, unplug the power cord from 
the wall outlet immediately and contact your 
Onkyo dealer.

Audio

There’s no sound, or it’s very quiet

Make sure that all audio connecting 
plugs are pushed in all the way. 
(

o

P.7, 8)

Make sure that the input of device is 
connected properly. (

o

P.7, 8)

When the Status indicator flashes in 
white, the muting is enabled. Press 

 or Volume –/+ on the remote 

controller or the /– buttons 
simultaneously on the soundbar to 
disable the muting. (

o

P.14)

Make sure that none of the connecting 
cables are bent, twisted, or damaged.

The base sound cannot be heard

The protection circuit in the subwoofer 
may have tripped due to a rise in 
temperature. Disconnect the power 
cord from the outlet and reconnect after 
a while.

Noise can be heard

Do not bind the power cord, connection 
cables and other audio cables with a 
band.

An audio cable may be picking up 
interference. Try repositioning your 
cables.

Make sure that the unit is properly 
connected to a subwoofer sold 
commercially.

Remote Controller

The remote controller doesn’t work

Make sure that the battery is installed 
with the correct polarity. (

o

P.13)

Make sure that the remote controller is 
not too far away from the soundbar, and 
that there’s no obstruction between the 
remote controller and the soundbar’s 
remote control sensor. (

o

P.13)

Make sure that the soundbar is not 
subjected to direct sunshine or 
invertertype fluorescent lights. Relocate 
if necessary.

The remote control may not work 
properly, when being used for the 
first time after the purchase, or when 
the battery is inactivated because the 
remote controller is not used for a long 
time. In that case, try performing the 
following operations.

1. 

Hold down the remote controller’s 

 

button (for at least ten seconds). If the 

remote controller still does not operate, 

repeat this operation.

2. 

Remove the button battery, wipe it with 

a dry cloth, and then insert it again.

Playing USB Memory

The unit supports USB memory formatted 

using FAT12, FAT16 and FAT32 file system.

The unit is compatible with MP3 
playback and following audio format is 
supported.

 

-

MPEG1 Audio Layer3 format with a 
sampling rate of 32, 44.1 or 48 kHz and 
32 to 320 kbps bit rate

 

-

MPEG2 Audio Layer3 format with a 
sampling rate of 16, 22.05 or 24 kHz 
and 8 to 160 kbps bit rate

 

-

MPEG2.5 Audio Layer3 format with a 
sampling rate of 8, 11.025 or 12 kHz 
and 8 to 64 kbps bit rate

You can play MP3 files stored on the 
root folder only. MP3 files stored on 
the other folders cannot be played on 
this unit.

The Soundbar supports USB flash drives 
only. Note, however, that playback may 
not be possible with some USB flash 
drives.

The soundbar contains a 

microcomputer for signal processing 

and control functions. In very rare 

situations, severe interference, noise 

from an external source, or static 

electricity may cause it to lockup. In 

the unlikely event that this happens, 

unplug the power cord from the wall 

outlet, wait at least five seconds, and 

then plug it back in.

If it doesn’t work properly, please try 

resetting (

o

P.18).

Onkyo is not responsible for damages 

(such as CD rental fees) due to 

unsuccessful recordings caused by 

the unit’s malfunction. Before you 

record important data, make sure 

that the material will be recorded 

correctly.

If you reset Bluetooth of this unit or removed the registration of this unit from the 

Bluetooth device, perform pairing (see above) again. 

To connect any other Bluetooth device, press and hold the 

 button of the main 

unit to start pairing.

Learning function

Button operation (Press simultaneously for 3 seconds)

MUTE

 

o

 

 + 

INPUT

 

o

 

 + 

SOUND MODE

 

o

 

 + 

It is recommended to select buttons that do not prevent TV operation when assigning 
the functions to your remote controller.

Signal of some types of remote controller may not be received by the unit. In that case, 
use the remote controller supplied with the unit.

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