Sennheiser PXC 550-II User manual

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PXC 550-II
Around-ear headphones
SEBT5
Instruction manual
Important safety instructions.................................................................2
Package contents.................................................................................4
Product overview..................................................................................5
Getting started....................................................................................11
Using the headphones........................................................................12
Care and maintenance.......................................................................30
FAQ/If a problem occurs …................................................................31
Specifications......................................................................................33
Manufacturer Declarations .................................................................34
Sennheiser electronic GmbH & Co. KG
Am Labor 1
30900 Wedemark
Germany
www.sennheiser.com
Version: 09/19 A01

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Important safety instructions
▷Read this instruction manual carefully and completely before using the product.
▷Always include this instruction manual when passing the product on to third parties.
▷Do not use an obviously defective product.
▷Only use the product in environments where Bluetooth® wireless transmission is permitted.
Preventing damage to health and accidents
▷Protect your hearing from high volume levels. Permanent hearing damage may occur when
headphones are used at high volume levels for long periods of time. Sennheiser headphones
sound exceptionally good at low and medium volume levels.
▷The product generates stronger permanent magnetic fields that could cause interference with
cardiac pacemakers, implanted defibrillators (ICDs) and other implants. Always maintain a distance
of at least 3.94"/10 cm between the product component containing the magnet and the cardiac
pacemaker, implanted defibrillator, or other implant.
▷Keep the product, accessories and packaging parts out of reach of children and pets to prevent
accidents. Swallowing and choking hazard.
▷Do not use the product in an environment that requires your special attention (e.g. in traffic or when
performing skilled jobs).
Preventing damage to the product and malfunctions
▷Always keep the product dry and do not expose it to extreme temperatures (hairdryer, heater,
extended exposure to sunlight, etc.) to avoid corrosion or deformation. The normal operating
temperature is from 0 to 40 °C/50 to 104 °F.
▷Use only attachments/accessories/spare parts supplied or recommended by Sennheiser.
▷Clean the product only with a soft, dry cloth.
▷Use the product with care and store it in a clean, dust-free environment.
Safety instructions for the lithium polymer rechargeable battery
WARNING
If abused or misused, the rechargeable batteries may leak.
In extreme cases, they may even present a risk of:
•heat generation,
•fire development,
•explosion,
•smoke or gas development.
Only use rechargeable batteries and chargers
recommended by Sennheiser.
Only charge the product / rechargeable batteries at
ambient temperatures between +10 °C to +40 °C/+50 to
104 °F.
Do not heat the product / rechargeable batteries above
+70 °C/140 °F. Avoid exposure to sunlight and do not
throw the product / rechargeable batteries into fire.

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When not using the product / rechargeable batteries for
extended periods of time, charge them regularly (about
every three months).
Switch rechargeable battery-powered products off after
use.
Dispose of defective products with built-in rechargeable
batteries at special collection points or return them to your
specialist dealer.
Notes on data collection and processing and on firmware updates
This product stores individual settings such as the volume and the Bluetooth addresses of paired
devices. This data is required for the operation of the product and is not transferred to Sennheiser or
companies commissioned by Sennheiser and is not processed.
Using the “Sennheiser Smart Control” app, you can update the firmware of the product for free via an
Internet connection. If the device on which the app is installed is connected to the Internet, the follow-
ing data is automatically transferred to and processed by Sennheiser servers in order to provide and
transfer suitable firmware updates: hardware identifier, hardware revision number, firmware version of
the product and version of the app. The data will only be used as specified and will not be stored
permanently. If you do not want this data to be transferred and processed, do not connect to the
Internet.
Intended use/Liability
These headphones have been designed as an accessory for Bluetooth compliant devices. They are
intended for wireless audio communication such as music playback and phone calls via Bluetooth
wireless technology.
It is considered improper use when the product is used for any application not named in the
corresponding product documentation.
Sennheiser does not accept liability for damage arising from misuse or improper use of this product
and its attachments/accessories.
Sennheiser is not liable for damages to USB devices that are not consistent with the USB
specifications.
Sennheiser is not liable for damages resulting from the loss of connection due to flat or overaged
rechargeable batteries or exceeding the Bluetooth transmission range.
Before putting into operation, please observe the respective country-specific regulations.

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Package contents
PXC 550-II around-ear headphones
SEBT5
USB cable with micro-USB connector,
length approx. 1.2 m
Analog audio cable with 2.5 mm jack plug and
3.5 mm jack plug,
length approx. 1.4 m
In-flight adapter
Carry case
Quick guide
Safety guide
Online you can find:
•this detailed instruction manual and additional information www.sennheiser.com/download
•the Sennheiser Smart Control app for configuring the headphones and for additional
functions www.sennheiser.com/smartcontrol
A list of accessories can be found on the PXC 550-II product
page at www.sennheiser.com. Contact your local Sennheiser
partner: www.sennheiser.com > “Service & Support”.

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Product overview
PXC 550-II
Headband
Ear cup joint with on/off function for the headphones
Ear cups, steplessly adjustable
Microphones for active noise cancellation ANC:
2x directed outward, 2x directed inward (not visible)
Touch pad (right ear cup)
Bluetooth on/off switch
position: off “0”, on “I”

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Ear pads
Speech microphones (3x) for phone calls
Active noise cancellation (ANC) switch
position: off “0”, USER mode “I”, MAX mode “II”
Voice assistant button
pressing for 4 seconds activates the Bluetooth pairing
mode
LED
Input for USB micro-B;
for charging and music playback/data connection
Input for analog audio cable;
when a cable is connected, flight mode is activated/
Bluetooth is deactivated
Overview of the LED display
During operation
LED
Meaning; the headphones...
flashes white 3x
... switch on
flashes white 3x
... are connected to a device via Blue-
tooth
flashes red 3x
... switch off
flashes red 3x
... are not connected to a device via
Bluetooth or the connection has been
lost
flashes white
sequentially
... are in Bluetooth pairing mode
flashes red
A charging error/battery error has
occurred (> Information on the built-in
rechargeable battery)
During phone calls
LED
Meaning
flashes white 3x
Incoming call

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flashes red 3x
Incoming call and the rechargeable
battery of
the headphones is almost empty
During charging
LED
Meaning
1 red
Rechargeable battery is almost empty
(less than 2% charged)
1 white
Battery is approx. 2-20% charged
2 white
Battery is approx. 20-40% charged
3 white
Battery is approx. 40-60% charged
4 white
Battery is approx. 60-80% charged
5 white
Battery is more than 80% charged
If the LED display does not light up immediately during
charging, clean the charging contacts and charge the head-
phones until the LED lights up again (> Charging the
headphones' rechargeable battery).
Notes on voice prompts
The headphones output voice prompts for various functions (see examples below). Using the Smart
Control app, you can change the language of the voice prompts, choose between voice prompts and
beep sounds, or deactivate the status messages with a few exceptions (e.g. rechargeable battery is
empty).
Voice prompt
Meaning/headphones
“Power on”
are switched on
“Power off”
are switched off
“Device (1) (2) connected”
are connected to device 1 or 2
“No connection”
are not connected via Bluetooth
“Pairing”
are in Bluetooth pairing mode
“Pairing successful”
Bluetooth pairing successful
“No device found”
cannot connect to a paired device
“Volume min”
volume set to minimum
“Volume max”
volume set to maximum
“Call rejected”
incoming call rejected
“Call ended”
call ended
“Mute on”
Microphone is muted, active call is put
on hold
“Mute off”
Microphone is reactivated
“More than xx % battery left”
Rechargeable battery has the stated
charge level

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“Recharge headset”
Rechargeable battery is empty.
Recharge the headphones.
Overview of the buttons and switches
ANC switch
Position
Function
See
ANC is deactivated
> Information
on active
noise
cancellation
ANC
ANC is activated
USER mode (can be adjusted via the
Smart Control app)
ANC is activated
MAX mode
Bluetooth on/off switch
Position
Function
See
Bluetooth is activated
> Deactivating
Bluetooth/activating
the flight mode
Bluetooth is deactivated

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Voice assistant button
Press the
button
Function
See
Activates/deactivates the voice
assistant
> Using the
voice
assistant/voice
dialing
Activates the Bluetooth pairing mode
> Pairing the
headphones
with a
Bluetooth
device
Overview of the smart control
Basic control
Switch-on
Switch-off
Gesture control via the touch pad
Briefly tap the touch pad once
Briefly tap the touch pad
twice

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Tap the touch pad and hold for
2 seconds
Tap the touch pad and hold for
3 seconds
Vertical swipe
Horizontal swipe
Vertical swipe and hold
Horizontal swipe and hold