Lenovo W770 User manual

W770
Wireless
Headset
W770
Wireless
Headset User Manual
User Manual
W770
Wireless Headset
Product name: Lenovo Wireless Headset W770
Product standard: Q/HDLCS103-2009
Manufacturer: Lenovo (Beijing) Limited
Address: No.6 Chuang Ye Road, Shangdi Information
Industry Base, Haidian District, Beijing, China
Zip Code: 100085
Lenovo website: www.lenovo.com
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I. PRODUCT INTRODUCTION
Dear customers,
Thank you for selecting high-quality electronic product offered by Lenovo. This headset
is manufactured with internationally advanced 2.4 GHz wireless audio transmission
technology. This technology is characterized by stable signal (easily avoiding the
interference of other signals with high frequency hopping anti-interference technology),
long transmission distance and Hi- stereo.
This headset consists of one USB Dongle and one receiver (headset). Its in-built
Lithium polymer battery of 380 mAh provides a standby time of 6 hours, allowing you
enjoy the music and chat online freely.
OS requirement: WIN XP, WIN 2000, WIN 7, VISTA, Apple MAC
Compatible players: MediaPlayer, RealPlayer, etc.
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II. INTRODUCTION OF HEADSET CONNECTION
1. First, connect the USB Dongle to the USB interface of the computer. The computer will
automatically recognize the USB Dongle. After it prompts that the device installation is
completed, the device can be used normally (with the computer providing tips for rst
use).
2. Turn on the headset. After it completes connection with the USB Dongle, the headset
can be used normally.
III. HEADSET BUTTONS
On/Off
Charging
Indicator
Charging Port
Toggle Switch
Working State
Indicator
1. On/Off
a. Power On: By pressing this button for over 1 second in power off state, blue LED
lamp is constantly on, and the headset is started.
b. Power Off: By pressing this button for over 1 second and then releasing it in power
on or playing state, blue LED lamp is off, and the headset is powered off.
2. Toggle switch
a. Pause/Play: In playing state, press middle part of this button to pause, and press
middle part of this button again to resume the playing.
b. Previous/Next: Press this button and hold for a moment to play the previous/next
song.
c. Volume +/-: Toggle this button upwards/downwards to increase/decrease the
volume.
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IV. INDICATOR LAMP
1. Red LED lamp
Red LED lamp is the charging indicator. It lights on when the device is charged, and is
off when the charging completes (or low level lighting).
2. Blue LED lamp
Blue LED lamp is the working state indicator.
a. When power on, this lamp is on indicating the device works normally;
b. This lamp is off when the device is powered off or the battery is out of power.
V. MICROPHONE
The microphone is hidden multi-directional microphone, providing superior gaming and
chatting experience.
Microphone
VI. CHARGING INSTRUCTIONS
Charging port
Charging cable
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1. Connect 3.5 mm charging plug with the headset rst, and connect USB connector of
the charging cable with USB port of the computer or USB port of dedicated charger.
Red LED lamp is on and the device enters the charging state.
2. When the charging is completed, red LED lamp is off. You could just disconnect the
charging cable.
Notes:
● This headset is equipped with inbuilt irremovable charging battery. Please do not
remove the battery to avoid the damage to the headset.
● The charging time of the headset battery for the rst time should be 12 - 24 hours
to activate the best operating state of the battery. Later on, the charging time will
be 2 - 3 hours (please do not charge the device for over 24 hours to avoid the
damage to the service life of the battery).
● This 3.5 mm plug can only be used for connecting the charging port of over
W770, but cannot connect the audio port of the audio device such as PC.
VII. WEARING INSTRUCTIONS
1. Please distinguish the left and right side of the headset when wearing it: “L” on the
bracket indicates the left side, while “R” indicates the right side.
2. Both sides of the headset are equipped with collapsible headphones. The length can be
adjusted accordingly to make you enjoy the music comfortably! The stretched length is
24±1 mm.
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VIII. ROTATING EAR PAD
90 degrees of
rotation
IX. FAQS
No sound can be heard
1. Check whether the USB Dongle has been plugged in USB port of the computer, and
the microphone has been powered on;
2. Adjust the volume with the toggle switch on the headset;
3. Close and reopen the multimedia player;
4. Check the headset power and charge it if low;
5. Check whether the sound playback is switched to the wireless headset. Some systems
may not switch the sound automatically, so please follow the steps below:
In XP system
a. Right click the voice controller in the Task Manager, and select Adjust Audio
Properties.
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b. Select the Audio Properties and check whether the default sound playback device is
“Lenovo Wireless Headset W770”. If not, click on “Lenovo Wireless Headset W770”
to set it as the default value, and then restart the player to switch the sound over.
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In WIN7 system
a. Right click the voice controller in the Task Manager, and select the Playback
Devices option as shown by the arrows in the picture below.
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b. Check whether the default device is “Lenovo Wireless Headset W770”, and if not,
click on the speaker Lenovo Wireless Headset W770 and set it as the default value
to switch the sound over.
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X. PRODUCT PARAMETER
Headset:
Drive unit ............................................................................................................... 2 x 40 mm
Frequency response........................................................................................20Hz ~ 20KHz
Impedance................................................................................................ 32Ω±15% @ 1kHz
Sensitivity (SPL) ...............................................................................103±3dB/1mW @ 1KHz
Signal to noise ratio........................................................................................................65dB
Working voltage...............................................................................................................3.7V
Working current .............................................................................................................58mA
Battery capacity.........................................................................................................380mAh
Continuous working time ................................................................................................... 6H
Charging time ................................................................................................................. 2.5H
Input power...................................................................................................................20mW
Maximum input power ..................................................................................................45mW
Net weight of headset..................................................................................................... 160g
Net weight of USB Dongle.................................................................................................. 6g
Microphone:
Frequency response...................................................................................... 100Hz ~ 10kHz
Impedance..............................................................................................2.2kΩ±10% @ 1kHz
Sensitivity ................................................................................ -38±2dB @ 1kHz 0dB=1V/PA
Signal to noise ratio........................................................................................................55dB
USB Dongle specification:
Working voltage..................................................................................................................5V
Working current .............................................................................................................55mA
Transmitting power
...................................................................................................... <+6dBM
Transmitting range........................................................................................................... 10M
Modulation mode.......................................................................................................... GFSK
Frequency range ................................................................................. 2404MHz ~ 2476MHz
Interface...........................................................................................................................USB
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