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The screen is blank.
If the AC adapter is connected, or if the battery is used, and the battery status
indicator is on, press F4 to make the screen brighter.
Press the power button to resume from sleep mode.
If the problem persists, check if the screen resolution and color are correctly
set, or if the monitor type is correct.
10.3 Sleep problems
The critical low-battery error message appears, and the device turns off.
The battery power is getting low. Connect the AC adapter to the device.
The device enters sleep mode immediately after Power-on.
Make sure that the battery is charged. The operating temperature may also be
too hot. Move it to a cooler environment and try to wake the device.
The device does not return from sleep mode and the device does not work.
Connect the AC adapter, then press the power button. If your device is
powered-off, connect the AC adapter first, and then press the power button
to resume operation.
10.4 Sound problems
No sound can be heard from the speaker even when the volume is turned up.
Make sure that:
• The Mute function is off;
• The combo audio jack is not being used;
• Speakers are selected as the playback device.
10.5 Other problems
Your device does not respond.
To turn on your device, press and hold the power button for 6 seconds or more.
If the device still does not respond, remove the AC adapter.
Your device might lock when it enters sleep mode during a communication
operation. Disable the sleep timer when you are working on the network.
The connected external device does not work.
Do not connect or disconnect any external device cables other than USB while
the device power is on. Otherwise, you might damage your device.
When using a high power consumption external device such as an external
USB optical disk drive, use an external device power adapter. Otherwise, the
device may not be recognized, or the system may shut down as a result.
11. AGENCY REGULATORY NOTICES
11.1 Specific Absorption Rate (SAR) Certification Information
THIS DEVICE MEETS INTERNATIONAL GUIDELINES FOR EXPOSURE TO RADIO WAVES
Your device is a radio transmitter and receiver. It is designed not to exceed
the limits for exposure to radio waves (radio frequency electromagnetic fields)
recommended by international guidelines.
The guidelines were developed by an independent scientific organization (ICNIRP)
and include a substantial safety margin designed to assure the safety of all
persons, regardless of age and health.
The radio wave exposure guidelines use a unit of measurement known as the
Specic Absorption Rate, or SAR. The SAR limit set by FCC is 1.6 W/kg. Tests for SAR
are conducted using standard operating positions with the device transmitting
at its highest certified power level in all tested frequency bands.
During use, the actual SAR values for this device are usually well below the
values stated above.
This is because, for purposes of system efficiency and to minimize interference
on the network, the operating power of your device is automatically decreased
when full power is not needed for the call. The lower the power output of the
device, the lower its SAR value.
Organizations such as the World Health Organization and the US Food and
Drug Administration have suggested that if people are concerned and want
to reduce their exposure, they could use a hands-free accessory to keep the
wireless device away from the head and body during use, or reduce the amount
of time spent using the device.
11.2 Elimination of Private Equipment by Users in the
European Union
This symbol on the product or on its packaging indicates that this product
must not be disposed of with other household waste. It is your responsibility
to dispose your used equipment at a collection point for recycling of electrical and
electronic equipment.The separate collection and recycling of disposed equipment
used will help to conserve natural resources and ensure that the equipment will
be recycled adequately to protect human health and the environment.
For more information about the locations where you can drop off your equipment
for recycling, please contact your local municipality, the local garbage collection
service or the point where you purchased the product.
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