Toshiba C55a Manual

							ProblemProcedureExternal devices
connected to the
compatible ports do
not work when
connected to a
compatible port.Some external devices might not work when
connected to a compatible port if the Sleep and
Charge function is enabled.
Reconnect the external device after turning the
computer ON.
If the external device still does not work, connect
device to an USB port that does not have the
Sleep and Charge function or change to disable
the Sleep and Charge function.The "USB Wakeup
function" does not
work.When Sleep and Charge function is enabled, the
"USB WakeUp" function does not work for ports
that support the Sleep and Charge function.
In that case, use an USB port that does not have
the USB Sleep and Charge function or change to
disable Sleep and Charge function.
Sound system
In addition to the information in this section, also refer to the documentationsupplied with your audio device.
ProblemProcedureNo sound is heardPress the function keys to increase or decreasevolume.
Check the software volume settings.
Check to see if Mute is turned to Off
Check to make sure that the headphone
connection is secure.
Check within the Windows Device Manager
application to ensure that the sound device is
enabled and that the device is properly working.Annoying sound is
heardIn this instance, you might be experiencing
feedback from either the internal microphone or an
external microphone connected to the computer.
Refer to  Sound System and Video mode  for further
information.
Volume cannot be adjusted during Windows start
up or shut down.
If you are still unable to resolve the problem,
contact TOSHIBA Support.
User's Manual 6-12 
						

							External monitorAlso refer to  Operating Basics , and to the documentation supplied with
your monitor for further information.ProblemProcedureMonitor does not
turn onAfter confirming that the monitor's power switch is
on, check the connections to make sure that the
power cord/adaptor is firmly connected to the
monitor and to a working power outlet.No displayTry adjusting the contrast and brightness controls on the external monitor.
Press the function key in order to change the
display priority and ensure that it is not set for the
internal display only.
Check to see if the external monitor is connected.
When the external monitor is set as the primary
display device in extended desktop mode, it does
not display when the computer wakes up from
Sleep Mode if the external monitor has been
disconnected while in Sleep Mode.
To keep this from happening, do not disconnect
the external monitor while the computer is in Sleep
or Hibernation Mode.
Remember to turn off the computer before
disconnecting the external monitor.
When the display panel and an external monitor
are set to clone mode and they are turned off by
the timer, the display panel or the external monitor
might not display when turned on again.
If this occurs, press the function key to reset the
display panel and external monitor to clone mode.Display error occursCheck that the cable connecting the external
monitor to the computer is firmly attached.
If you are still unable to resolve the problem,
contact TOSHIBA Support.
LAN
ProblemProcedureCannot access LANCheck for a firm cable connection between the LAN jack and the LAN hub.
User's Manual 6-13 
						

							ProblemProcedureWake-up on LAN
does not workMake sure that the AC adaptor is connected. The
Wake-up on LAN function consumes power even
when the system is off.
Check to make sure that fast startup is disabled: 1. Click  Control Panel -> System and Security
-> Power Options  under Windows System
group in the Apps view.
2. Click  Choose what the power button does
or  Choose what closing the lid does .
3. Click  Change settings that are currently 
unavailable .
4. Clear the  Turn on fast startup  check box.
5. Click the  Save changes  button.
If problems persist, consult your LAN administrator.
Wireless LAN
ProblemProcedureCannot access
Wireless LANMake sure that the wireless communication function of the computer is on.
If problems persist, contact your LAN
administrator.
Bluetooth
ProblemProcedureCannot access
Bluetooth deviceCheck to ensure that the wireless communication function of the computer is on.
Check to ensure that the Bluetooth Manager
application is running on the computer and that
power to the external Bluetooth device is turned
on.
Check to ensure that no optional Bluetooth Adaptor
is installed in the computer. The built-in Bluetooth
hardware cannot operate simultaneously with
another Bluetooth controller.
If you are still unable to resolve the problem,
contact TOSHIBA Support.
User's Manual 6-14 
						

							TOSHIBA supportIf you require any additional help using your computer or if you are havingproblems operating the computer, you might need to contact TOSHIBA foradditional technical assistance.
Before you call Some problems you experience might be related to software or the
operating system so it is important that you investigate other sources of
assistance first. Before contacting TOSHIBA, try the following:
Review troubleshooting sections in the documentation supplied with your software and/or peripheral devices.
If a problem occurs when you are running software applications,
consult the software documentation for troubleshooting suggestions
and consider calling the software company's technical support department for assistance.
Consult the reseller or dealer from where you purchased yourcomputer and/or software - they are your best resource for current
information and support.
TOSHIBA technical support If you are still unable to solve the problem and suspect that it is hardware-
related, read the enclosed warranty booklet or visit the TOSHIBA technical support website
http://pc-support.toshiba.eu
User's Manual 6-15 
						

							Chapter 7
Appendix
Specifications This section summarizes the technical specifications of the computer.
Physical Dimensions The following physical dimensions do not include parts that extend beyond
the main body. The physical dimensions vary depending on the model you
purchased.
SizeApproximately 380 (w) x 259.9 (d) x 22.5/22.5 (h)
millimeters
Approximately 380 (w) x 259.9 (d) x 23.5/23.5 (h)
millimeters
Approximately 380 (w) x 259.9 (d) x 24.5/24.5 (h)
millimeters
(not including parts that extend beyond the main body).
Environmental Requirements
ConditionsAmbient temperatureRelative humidityOperating5°C (41°F) to 35°C
(95°F)20% to 80%
(noncondensing)Non-operating-20°C (-4°F) to 60°C
(140°F)10% to 90%
(noncondensing)Wet-bulb temperature29°C maximumConditionsAltitude (from sea
level)Operating-60 to 3,000 metersNon-operating-60 to 10,000 meters
maximum
User's Manual 7-1 
						

							Power RequirementsAC adaptor100-240V AC
50 Hz or 60 Hz (cycles per second)Computer19V DC  
AC Power Cord and Connectors
The AC input plug of the power cord must be compatible with the variousinternational AC power outlets and the cord must meet the standards for
the country/region in which it is used. All cords must meet the following
specifications:
Wire size:Minimum 0.75 mm 2Current rating:Minimum 2.5 amperes  
Certification agencies
China:CQCU.S. and Canada:UL listed and CSA certified
No. 18 AWG, Type SVT or SPT-2Australia:ASJapan:DENANHOEurope:Austria:OVEItaly:IMQBelgium:CEBECThe Netherlands:KEMADenmark:DEMKONorway:NEMKOFinland:FIMKOSweden:SEMKOFrance:LCIESwitzerland:SEVGermany:VDEUnited Kingdom:BSI    
In Europe, two conductors power cord must be VDE type, H05VVH2-F or
H03VVH2-F and for three conductors power cord must be VDE type, H05VV-F.
User's Manual 7-2 
						

							For the United States and Canada, two-pin plug configuration must be a
2-15P (250 V) or 1-15P (125 V) and three-pin plug configuration must be 6-15P (250 V) or 5-15P (125 V) as designated in the U.S. NationalElectrical code handbook and the Canadian Electrical Code Part II.
The following illustrations show the plug shapes for the U.S.A. and
Canada, the United Kingdom, Australia, Europe, and China.USA
UL approved
United Kingdom
BS approved
Australia
AS approved
Europe
Approved by the appropriate agency
Canada
CSA approved
China
CCC approved
Information for Wireless Devices
Wireless Technology Interoperability
The Wireless LAN is compatible with other LAN systems Direct Sequence
Spread Spectrum (DSSS) /Orthogonal Frequency Division Multiplexing (OFDM) radio technology, and is compliant to:
The IEEE 802.11 Standard on Wireless LANs (Revision a/b/g/n, b/g/n
or Revision a/b/g/n/ac), as defined and approved by the Institute of
Electrical and Electronics Engineers.
Bluetooth ®
 Modules are designed to be interoperable with any product with
Bluetooth wireless technology that is based on Frequency Hopping Spread
Spectrum (FHSS) radio technology, and is compliant to:
Bluetooth Specification (depending on the model you purchased), as
defined and approved by the Bluetooth Special Interest Group.
Logo certification with Bluetooth wireless technology as defined by the Bluetooth Special interest Group.
This Bluetooth product is not compatible with devices using Bluetooth
Version 1.0B specifications.
User's Manual 7-3       
						

							The wireless devices have not completed verification of connection andoperation with all devices which are using the Wireless LAN or Bluetoothradio technology.
Bluetooth and Wireless LAN devices operate within the same radio
frequency range and might interfere with one another. If you use Bluetooth
and Wireless LAN devices simultaneously, you might occasionally experience a less than optimal network performance or even lose yournetwork connection.
If you experience any such problem, immediately turn off either one of your
Bluetooth or Wireless LAN.
If you have any questions about using Wireless LAN or Bluetooth Module, visit
http://www.pc.support.global.toshiba.com In Europe, visit
http://www.toshiba-europe.com/computers/tnt/bluetooth.htm
Wireless Devices and your health
Wireless products, like other radio devices, emit radio frequencyelectromagnetic energy. The level of energy emitted by Wireless products
however is far much less than the electromagnetic energy emitted by
wireless devices like for example mobile phones.
Because Wireless products operate within the guidelines found in radio
frequency safety standards and recommendations, TOSHIBA believes that
Wireless products are safe for use by consumers. These standards and
recommendations reflect the consensus of the scientific community and
result from deliberations of panels and committees of scientists who
continually review and interpret the extensive research literature.
In some situations or environments, the use of Wireless products might be
restricted by the proprietor of the building or responsible representatives of
the organization. These situations might for example include:
Using the Wireless products equipment on board of airplanes, or
In any other environment where the risk of interference to other
devices or services is perceived or identified as harmful.
If you are uncertain of the policy that applies on the use of wireless devices
in a specific organization or environment (for example, airports), you are encouraged to ask for authorization to use the Wireless device prior to
turning on the equipment.
Wireless LAN Technology The wireless communication function of the computer supports some
wireless communication devices.
User's Manual 7-4 
						

							Only some models are equipped with both Wireless LAN and Bluetoothfunctions.Do not use the Wireless LAN (Wi-Fi) or Bluetooth functionalities near a
microwave oven or in areas subject to radio interference or magnetic fields. Interference from a microwave oven or other source can disruptWi-Fi or Bluetooth operation.
Turn off all wireless functionalities when near a person who mighthave a cardiac pacemaker implant or other medical electric device.Radio waves might affect pacemaker or medical device operation,
possibly resulting in serious injury. Follow the instruction for your medical device when using any wireless functionality.
Always turn off wireless functionality if the computer is near automaticcontrol equipment or appliances such as automatic doors or firedetectors. Radio waves can cause malfunction of such equipment,
possibly resulting in serious injury.
It might not be possible to make a network connection to a specified network name using the ad hoc network function. If this occurs, thenew network (*) has to be configured for all computers connected to
the same network in order to re-enable network connections.
* Make sure to use new network name.
Security
TOSHIBA strongly recommends that you enable encryption
functionality, otherwise your computer is open to illegal access by an outsider using a wireless connection. If this occurs, the outsider might
illegally access your system, eavesdrop, or cause the loss or destruction of stored data.
TOSHIBA is not liable for the loss of data due to eavesdropping or
illegal access through the wireless LAN and the damage thereof.
Card Specifications
CompatibilityIEEE 802.11 Standard for Wireless LANsNetwork Operating
SystemMicrosoft Windows NetworkingMedia Access
ProtocolCSMA/CA (Collision Avoidance) with
Acknowledgment (ACK)
Radio Characteristics
Radio Characteristics of Wireless LAN module might vary according to:
Country/region where the product was purchased
Type of product
User's Manual 7-5 
						

							Wireless communication is often subject to local radio regulations.
Although Wireless LAN wireless networking products have been designed
for operation in the license-free 2.4 GHz and 5 GHz band, local radio regulations might impose a number of limitations to the use of wirelesscommunication equipment.Radio FrequencyBand 5 GHz (5150-5850 MHz) (Revision a
and n)
Band 2.4 GHz (2400-2483.5 MHz) (Revision
b/g and n)
The range of the wireless signal is related to the transmit rate of the
wireless communication. Communications at lower transmit range might travel larger distances.
The range of your wireless devices can be affected when the
antennas are placed near metal surfaces and solid high-density materials.
Range is also impacted due to "obstacles" in the signal path of the
radio that might either absorb or reflect the radio signal.
Radio Frequency Interference Requirements
This device is restricted to indoor use due to its operation in the 5.15 to
5.25GHz frequency range.
High-power radars are allocated as primary users (i.e. priority users) of the
bands 5.25 to 5.35GHz and 5.65 to 5.85GHz and that these radars could cause interference and/or damage to LE-LAN devices.
Bluetooth wireless technology Some computers in this series have Bluetooth wireless communication
function which eliminates the need for cables between electronic devices
such as computers, printers, and mobile phones. When it is enabled,
Bluetooth provides the wireless personal area network environment which
is safe and trustworthy, that is quick and easy.
You cannot use the built-in Bluetooth functions of the computer and an external Bluetooth adaptor simultaneously. For reference, Bluetooth wireless technology has the following features:
Security
Two advanced security mechanisms ensure a high level of security:
Authentication prevents access to critical data and makes it impossible
to falsify the origin of a message.
Encryption prevents eavesdropping and maintains link privacy.
User's Manual 7-6