User guide | Cadillac 2006 STS-V Automobile User Manual

Machine type: 10062/7727
10073/1169
10066/7747
10067/7748
IdeaCentre K3 Series
User Guide
Version 5.0
2011.01
31048499
Important Safety Information
Before using this manual, it is important that you read and understand all of the
related safety information for this product. Refer to the Safety and Warranty Guide
that you received with this product for the latest safety information. Reading and
understanding this safety information reduces the risk of personal injury or damage
to your product.
Danger: Be aware of extremely hazardous or lethal situations.
Attention: Be aware of possible damage to programs, devices, or data.
Note: Pay attention to this important information.
© Copyright Lenovo 2007, 2011.
Contents
Important Safety Information
Chapter 1 Using the Computer Hardware............................... 1
1.1Front view of the chassis..........................................................2
1.2Rear view of the chassis...........................................................3
1.3Connecting your computer.......................................................6
1.4Power Dial (Selected models only)..........................................13
Chapter 2 Using the Rescue System..................................... 17
2.1OneKey Recovery...................................................................18
2.2Driver and Application Installation...........................................18
2.3System Setup.........................................................................19
2.4System Backup......................................................................20
2.5System Recovery...................................................................20
2.6Create Recovery Disc.............................................................20
Chapter 3 Using the Computer Software.............................. 21
3.1Lenovo Dynamic Brightness System.......................................22
3.2Lenovo Eye Distance System.................................................23
3.3BackOn Track.........................................................................24
Chapter 4 Troubleshooting and Confirming Setup............... 27
4.1Troubleshooting Display Problems..........................................28
4.2Troubleshooting Audio Problems............................................29
4.3Troubleshooting Software Problems.......................................29
4.4Troubleshooting Problems with Optical Drives and
Hard Disks..............................................................................30
4.5Special considerations for troubleshooting Windows..............31
4.6Performing Daily Maintenance Tasks.......................................32
Contents
1
Chapter
Using the Computer Hardware
This chapter contains the following
topics:
1
 Computer hardware introduction
 Information on computer connections
2
Note: The descriptions in this chapter
might be different from what you see on
your computer, depending on the computer
models and configurations.
3
4
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1.1Front view of the chassis
Attention: Be careful not to block any air vents on the computer. Blocked
air vents can cause overheating.
1
2
3
7
4
5
6
8
9
Power button
Power Dial indicator ON/OFF
File backup button
USB connector
Microphone connector
Headphone connector
Memory card reader (Selected models only)
Optical drive (Some models are equipped with only one optical drive)
Power Dial switch
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1.2Rear view of the chassis
IdeaCentre K330
Voltage selection switch (Selected models only)
Power connector
PS/2 keyboard connector
PS/2 mouse connector
USB connectors (6)
eSATA connector
Ethernet connector
Audio connectors (6)
Standalone graphic card
Expansion card slots (Access connectors for any installed PCI express cards)
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IdeaCentre K330A/IedaCentre K330B
Voltage selection switch (Selected models only)
Power connector
PS/2 keyboard connector
PS/2 mouse connector
HDMI connector
USB connectors (4)
On-board VGA connector
Ethernet connector
Audio connectors (3)
Standalone graphic card (Selected models only)
Expansion card slots (Access connectors for any installed PCI express cards)
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IdeaCentre K335
Voltage selection switch (Selected models only)
Power connector
PS/2 keyboard connector
PS/2 mouse connector
eSATA connector
USB connectors (6)
HDMI connector
On-board VGA connector
Ethernet connector
Audio connectors (6)
Standalone graphic card (Selected models only)
Expansion card slots (Access connectors for any installed PCI express cards)
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1.3Connecting your computer
Use the following information when connecting your computer.
• Look for the small connector icons on the back of your computer. Match the
connectors to the icons.
• If your computer cables and connector panel have color-coded connectors,
match the color of the cable end with the color of the connector.
Note: Your computer may not have all of the connectors described in this
section.
1.3.1Check the position of the voltage-selection switch on
the rear of the computer. Use a ballpoint pen to slide the
switch if necessary.
Note: Some computers do not have a voltage switch. These computers
control voltage automatically.
• If the voltage supply range is 100-127 V AC, set the switch to 115 V.
• If the voltage supply range is 200-240 V AC, set the switch to 230 V.
230
115
1.3.2Connect the keyboard cable to the appropriate keyboard
connector (PS/2 connector or USB connector).
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1.3.3Connect the mouse cable to the appropriate mouse
connector (PS/2 connector or USB connector).
Note: If your computer is equipped with a wireless keyboard or mouse,
follow the installation instructions for those devices.
1.3.4Connect the monitor cable to the monitor connector on
the computer.
• If you have a Video Graphics Array (VGA) Standard monitor, connect the
cable to the connector as shown.
Note: If your model has two monitor connectors, be sure to use the
connector on the graphics adapter.
• If you have an HDMI monitor, your computer must have an adapter that
supports the HDMI monitor installed. Connect the cable to the port as
shown.
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1.3.5If you have audio devices, attach them using the
following instructions.
Audio line-in
This connector receives audio signals from an external audio
device, such as a stereo system.
Audio line-out This connector sends audio signals from the computer to
external devices, such as powered stereo speakers.
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Microphone
Use this connector to attach a microphone to your
computer when you want to record sound or if you use
speech-recognition software. This connector might be
located on the front of the computer.
Headphone
Use this connector to attach headphones to your computer
when you want to listen to music or other sounds without
disturbing anyone. This connector might be located on the
front of the computer.
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1.3.67.1 Audio configuration instructions
Use the following illustration when connecting a 7.1 surround sound audio system:
Side surround connector
Microphone connector
Rear surround connector
Front line-out connector
Center/subwoofer connector
Audio line-in connector
Note: For more detailed settings, click Start → Control panel → Hardware
and Sound → Lenovo HD Audio Manager. Follow the instructions to
configure advanced settings.
Sound configuration is as follows:
1. Right click the Sound icon in the system property bar and select the sounds
option to setup the sounds in the pop-up dialog box.
2. Select a playback device from the playback dialog box, then click the
configure button to configure it.
3. Select 7.1 surround from audio channels in the pop-up speaker setup dialog
box and proceed with the speaker setup by following the prompts.
4. 7.1 surround sound can be used once this configuration procedure is complete.
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Note: If the audio configuration interfaces above are different from
those on your computer, you may use the above steps as a reference to
configure the 7.1 surround sound audio device system in your actual audio
configuration interface and read the electronic Help information for further
assistance.
1.3.75.1 Audio configuration instructions: (This instruction
is only for the pc model which mainboard supports audio
transforming from 2.0 stereo to 5.1 surround.)
This model of computer supports transforming stereo sound into 5.1 surround
sound.
Use the following guides when connecting to the 5.1 surround audio device:
Blue line-in connector
Surround
Green line-out connector
Front channel
Pink Mic-in connector
Center-LEF
The configurations are as followings:
1. Right click the Sound icon in system property bar and select sounds option to
setup the sounds in the pop-up dialog box.
2. Select a playback device from the playback dialog box, and then click configure
button to configure it.
3. Select 5.1 surround from audio channels in the pop-up speaker setup dialog
box to proceed with the speaker setup by following as prompted.
4. After the configuration, 5.1 surround can be used.
Note: If the audio configuration interfaces in above are different from your
actual computer, you may use above steps as reference to configure the
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5.1 surround audio device in your actual audio configuration interface and
read the electronic Help information for further assistance.
1.3.8Connect any additional devices that you have. Your
computer may not have all the connectors shown here.
USB connector
Use this connector to attach a device that requires a USB
connection.
TV tuner
connector
Only supported on systems with optional TV tuner card.
Ethernet
connector
Use this connector to attach the computer to an Ethernettype local area network.
1.3.9Connect the power cords properly to grounded electrical
outlets.
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1.3.10If your computer is equipped with a Memory Card
Reader Connector, it can read/write data from the
following:
Memory Stick, Memory Stick PRO, Memory Stick Duo,
Memory Stick PRO Duo.
Secure Digital Card, SD High Capacity Card, Mini Secure Digital Card,
Mini SD High Capacity Card, Multi Media Card, Reduced Size Multi Media
Card, Multi Media Card Plus, Multi Media Card Mobile, XD Micro Drive,
Compact Flash Type I, Compact Flash Type II
1.3.11Keyboard and Mouse (wired)
LV
T
LV
T
LVT ——After entering Windows, press this key to launch the LVT (Lenovo
Vantage Technology) program, Lenovo’s pre-loaded Home PC software.
In addition to its own functions, the LVT program will allow you to start
other Windows compatible software, specially configured to run on this
model of computer. (Selected models only)
F2 ——Your computer has the Lenovo Rescue System installed.To learn more
about this program, repeatedly press and release the F2 key once
turning on the computer until the Lenovo Rescue System open.
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1.4Power Dial (Selected models only)
The Power Dial feature allows your computer to switch to different modes, thus
providing you with customized experiences during operations.
TURBO mode
COOL mode
AUTO mode
O
RB
TU
TO
AU
L
O
CO
Operation of the Power Dial
The Power Dial function supports three operating modes: AUTO TURBO and
COOL. System resources are optimized by toggling between those three different
modes. Different modes are used for different applications.
Display the main screen of the software
Double click the Power Dial icon in the Quick Launch bar.
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Open the running status for
each component under the
Mode Switch:
GPU — Show the
percentage of
the current GPU
clock frequency
against the nominal
maximal GPU clock
frequency.
CPU — Show the
percentage of
the current CPU
clock frequency
against the nominal
maximal CPU clock
frequency.
ODD — The status of the
optical drive.
HDD — The status of the
hard disk drive.
AUTO mode
TO
AU
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AUTO
AUTO
Each component operates
as displayed in the picture.
The numeric values may
vary because each model is
configured differently.
TURBO mode
TURBO
Runs at full speed. The
system achieves its optimal
performance.
Turn the Power Dial knob
to the TURBO position to
enable this mode.
O
RB
TU
TURBO
Each component operates
as shown in the adjacent
picture. The numeric
values may vary because
each model is configured
differently.
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COOL
COOL mode
The CPU runs at low
frequency. The system
consumes minimum power.
Turn the Power Dial knob to
the COOL position to enable
this mode.
L
O
CO
COOL
Each component operates
as shown in the adjacent
picture. The numeric
values may vary because
each model is configured
differently.
If other applications such as the burner program or game software change the
parameter settings for COOL mode when it is launched, a prompt dialog box will
pop up indicating that your “COOL settings” have been changed. In this case, click
OK.
To restore the previous COOL mode settings, exit other applications then turn the
Power Dial knob mounted on the chassis to COOL.
Notes:
• When you are running system-intensive games or other programs that
consume a high proportion of the system resources, you should choose
TURBO mode. This will allow you to achieve optimal performance.
• When the ODD status is shown as “QUIET”, it indicates that the current
maximal data CD reading speed is lower than the nominal maximal
reading speed of the ODD.
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Chapter
Using the Rescue System
This chapter contains the following
topics:
1
 OneKey Recovery
 Driver and Application Installation
 System Setup
 System Backup
 System Recovery
 Create Recovery Disc
2
Attention: Using this program will result in
loss of data.
• You can restore the C: drive of the computer
to factory default settings or to the last system
backup status using OneKey Recovery. If
you do this, all of the existing data on drive
C: will be lost, but the content and format of
the other partitions of the hard disk drive will
remain unchanged.
• If you want to install an operating system and
back it up with OneKey Recovery, you must
format the C: partition in NTFS format and
install the operating system on the C: partition.
Otherwise, the OneKey Recovery system
cannot run.
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4
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Note about the service partition:
The files and relevant data used by the rescue system are saved in the service
partition. Deleting this partition will make the rescue system unusable. For more
detailed information, see the following instructions:
By selecting Control Panel → Administrative Tools → Computer Management
→ Disk Management, you can see the service partition, which must not be
deleted.
Note: The recovery files and relevant data used by the rescue system are
saved in the service partition. If the service partition is deleted or damaged
by someone other than authorized Lenovo service personnel, Lenovo will
not be liable for any losses arising therefrom in any way.
2.1OneKey Recovery
OneKey Recovery is an easy-to-use application. You can use it to restore your
computer to the system default or to a previously backed up state.
Detailed Operation Procedure
1. Repeatedly press and release the F2 key once turning on the computer until the
Lenovo Rescue System open, then select OneKey Recovery.
Note: System Recovery will overwrite all of the data on the C: drive. To
prevent loss of data, be sure to back up relevant data before performing
system recovery.
2. Follow the on-screen instructions to select the backup task you want to restore
from and the disk where you want to install the operating system, then press
Next to start the restore.
3. Please wait during the process of system recovery. Do not interrupt the
operation during the recovery process.
4. After the system is recovered successfully, the software will prompt you to
restart the computer. Restart the computer and start the operating system.
2.2Driver and Application Installation
The Driver and Application Installation function in the rescue system provides a
way for the user to conveniently reinstall all of the Lenovo applications and drivers
that were shipped with your Lenovo hardware.
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Method 1: Automatic Installation
Repeatedly press and release the F2 key once turning on the computer until the
Lenovo Rescue System open, then select Drivers and Application Installation.
Follow the on-screen prompts to install the Lenovo drivers and applications.
Click Install to start installing the Lenovo Drivers and Application Installation
software.
The system will restart. After the system has restarted, the installation process will
continue until it has completed.
Method 2: Manual Installation
In the Windows system, Click Start → All Programs → Lenovo → Lenovo
Drivers and Application Installation.
After starting the procedure, install all the drivers and software manually by
following the prompts.
Notes:
1. Do not install software which is already installed on the computer.
2. Make sure that the Drivers and Application Installation software has
been automatically installed before starting the operating system. The
manual installation function can only be used after the software has
been installed.
2.3System Setup
System Setup configures the network configuration for the Lenovo Rescue
System to ensure your Rescue System can connect to internet. In addition, System
Setup sets and manages all passwords for the Lenovo Rescue system.
2.3.1Launch
Repeatedly press and release the F2 key once turning on the computer until the
Lenovo Rescue System open, then select System Setup.
2.3.2Network Settings
Depending on the network access mode of the computer, select “ADSL” or “LAN
Connection” in the network connection modes.
1. If you select “ADSL” input the username and password of the ADSL connection.
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2. If you select “LAN connection” configure the IP address and proxy server of the
LAN.
2.3.3Password Management
Password Management allows you to set and manage the password for Lenovo
Rescue System.
The default password is blank.
Set a password when you access Password Management for the first time.
If you don’t want to set a password, access the system directly and operate it
accordingly.
2.4System Backup
This backs up your system partition to an image file. In case of a system failure,
you can restore your system from this image file.
In the Windows system, click Start → All Programs → Lenovo → Lenovo
Rescue System.
After starting Rescue System, click System Backup to back up your system
partition by following the prompts.
2.5System Recovery
Reboot your computer into the system recovery environment. You can choose to
restore to a system backup point or the initial state (factory default settings).
2.6Create Recovery Disc
Create a bootable recovery disc from the current system. These recovery discs
are used to boot your computer and will guide you through the entire restoration
process.
In the Windows system, click Start → All Programs → Lenovo → Lenovo
Rescue System.
After starting Rescue System, click Create Recovery Disc to create a bootable
recovery disc from the current system.
Follow the on-screen prompts to create recovery discs.
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Chapter
Using the Computer Software
This chapter contains the following
topics:
1
 Computer software instructions
Note: The interface and function of each
of these features are subject to the actual
software that was shipped with the
computer model that you purchased.
2
3
4
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3.1Lenovo Dynamic Brightness System
Lenovo Dynamic Brightness System can automatically detects the surrounding
ambient brightness and adjusts the display brightness accordingly. This allows you
to set the screen brightness to a comfortable level for different environments. You
can also set the display delay time to automatically turn off the display when you
are away from the computer.
Note: The Auto Switch Display function can not be used when your
computer is in standby mode, sleep mode or turned off.
Note: This function applies only to computers equipped with a Lenovo PC
camera and is available only after the camera has been installed.
Before using this software, do the following:
1) Click Start → All Programs → Lenovo USB2.0 UVC Camera → vmcap.
2) Select Options → Preview from the pop-up window to display the image in the
video capture window.
Note: If there is no image display in the AMCAP video capture window,
please confirm that preview has been selected in the options.
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3) Confirm that Devices → Lenovo USB 2.0 UVC Camera has been selected. If
there are other devices in this option, make sure they are not selected. When
only the “Lenovo USB 2.0 UVC Camera” device is selected, the window should
display the camera image. The image being captured by the camera will be
displayed in the video capture window. Adjust the position and pitch angle of
the camera to ensure the whole face is displayed in the video capture window.
To use this software, do the following:
Click Start → All Programs → Lenovo → Lenovo Dynamic Brightness System.
The default setting has been pre-selected. You can adjust the brightness and
display delay time according to your needs.
3.2Lenovo Eye Distance System
The Lenovo Eye Distance System can automatically detect the distance between
you and the display. It will alert you automatically when you sit too close to the
display. You can also set the viewing distance as well as a time interval after which
a warning will pop up.
Note: This function applies only to computers equipped with a Lenovo PC
camera and is available only after the camera has been installed.
To use this software, do the following:
Click Start → All Programs → Lenovo → Lenovo Eye Distance System.
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The default setting has been pre-selected. You can adjust the viewing distance
according to your needs.
Note:
1. Ensure the lens of the camera is clearly visible and not covered.
2. Ensure your eyes are clearly visible and not covered.
(The function that detects the distance between the user and monitor
is based on the position of the user’s eyes. Therefore, if the eyes are
covered or there is a strong reflection, distance detection may be
affected.)
Wearing glasses may affect the accuracy of the face image verification.
3. The limits for distance detection by the camera:
Minimum distance: approx. 20 centimters (7.90 inches)
Maximum distance: approx. 70 centimeters (27.55 inches)
Pitch angle (angle of rotation of the face in the vertical plane):
Elevation: 20 degrees
Depression: 30 degrees
Horizontal angle of rotation (angle of rotation of the face in the horizontal
plane): between -20 and +20 degrees
3.3BackOn Track
BackOn Track lets you easily back up important files to a disc, hard drive, or other
storage device. A Back Up Files project can be scheduled to run daily, weekly, or
monthly. Large backups are automatically spread across as many discs as you
need.
3.3.1Using BackOn Track
Choose All Programs → Lenovo → FileBackup from the Start menu to launch
the BackOn Track software.
3.3.2Back up files
Begin by selecting the drive, drive partition, or folder containing the files you want
to back up. You can choose to archive all the files in the selected path or just
certain types of files. You can back up any files that have changed since a specified
date, or create a custom backup based on certain file extensions. Finally, schedule
the project to run on a regular basis, or begin backing up right away.
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3.3.3My Project
My projects is used to manage your saved backup projects. Any backup projects
that you have saved will be listed under My Projects.
3.3.4Restore Files
The Restore Files project restores individual files and folders that you have
protected using a Back Up Files project. With Restore Files, you select a backup,
search for the file or folder you would like to restore, and then click Next. The files
will be restored to the location you choose.
3.3.5Help
For more information on the operation of BackOn Track, see Product Help
Information in the Help option. You can learn more about the operation and
settings of BackOn Track software in the Help document.
3.3.6File Backup button (selected models only)
After starting the Windows operating system, press the File Backup button on the
top of the chassis to launch the BackOn Track software.
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Chapter
Troubleshooting and
Confirming Setup
This chapter contains the following
topics:
1
 Troubleshooting and Problem Resolution
Note: The description of the TV tuner card
in this manual is only used for the machines
which have the TV tuner card. It does not
apply to those machines that do not have a
TV tuner card.
2
3
4
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Solving Problems
Follow these tips when troubleshooting your computer:
• If you added or removed a part before the problem started, review the
installation procedures to ensure that the part is correctly installed.
• If a peripheral device does not work, ensure that the device is properly
connected.
• If an error message appears on the screen, write down the exact message.
This message may help support personnel diagnose and fix the problem(s).
• If an error message occurs in a program, see the program’s documentation.
Note: The procedures in this document were written for the Windows
default view, so they may not apply if you set your Lenovo® computer to
the Windows Classic view.
4.1Troubleshooting Display Problems
Problem: Blank screen or no image is displayed on the monitor.
Troubleshooting and problem resolution:
1. Check to see if the monitor has been turned on; if not, press the Power button.
2. Check to see if the monitor power cord is loose; if so, plug the power cord
securely into the monitor.
3. Check to see if the signal cable to the monitor is securely connected to the
connector on the computer graphics card; if not, shut down the computer
then connect the signal cable of the monitor securely to the connector on the
computer graphics card.
Problem: You need to change the display property settings.
Setting display background and icon properties:
1. Right-click the desktop anywhere except over an icon, then select Personalize
from the pop-up menu.
2. From here, select the appropriate options to:
• Change the desktop background
• Select a screen saver
• Select colors and appearance options for icons and text
• Set resolution and colors in the Display Settings options
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Problem: Ripple on screen.
Troubleshooting and problem resolution:
1. Check to see if any of the following devices are located less than one meter
from the computer: refrigerators, electric fans, electric dryers, UPS systems,
regulators, fluorescent lamps or other computers that may be generating
magnetic interference.
2. Move any interfering devices away from the computer.
3. If the problem persists, contact Lenovo Service.
4.2Troubleshooting Audio Problems
Problem: No sound from the integrated speakers.
Troubleshooting and problem resolution:
• Adjust the Windows volume control — double-click the speaker icon in the
lower-right corner of your screen. Ensure that the volume is turned up and the
sound is not muted. Adjust the volume, bass, or treble controls to eliminate
distortion.
• Reinstall the audio driver.
• Disconnect any headphones from the headphone connector — sound from
the speakers is automatically disabled when headphones are connected to the
computer’s side-panel headphone connector.
Problem: No sound from headphones.
Troubleshooting and problem resolution:
• Check the headphone cable connection — ensure that the headphone cable is
securely inserted into the headphone connector.
• Adjust the Windows volume control — click or double-click the speaker icon in
the lower-right corner of your screen. Ensure that the volume is turned up and
the sound is not muted.
4.3Troubleshooting Software Problems
Problem: You are unable exit a running program normally.
Troubleshooting and problem resolution:
1. Open the Task Manager window by pressing Ctrl, Alt and Delete at the same
time.
2. Select the Application tab, select the problem program, then click the End
Task button.
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Problem: You need to install or uninstall a program.
Problem resolution:
During installation never abort the install process by powering the system off or
through other drastic means. This can cause system program disorder or even
failure during system initialization.
During the uninstall process, never directly delete the files or folders. This is
harmful to the system, and might cause a system-wide malfunction.
Use the following procedure to properly uninstall programs:
1. Back up all documents and system settings related to the program before
removing it.
2. If the program has its own uninstaller, run it directly to uninstall the program.
3. If the program does not have its own uninstaller, then select Control Panel from
the Start menu.
4. From the Control Panel, choose Programs and Functions.
5. Find the applicable program from the Programs and Functions dialog box and
then select Uninstall/Modify.
6. Perform the instructions displayed to uninstall the software.
4.4Troubleshooting Problems with Optical Drives and
Hard Disks
Problem: The Optical drive is unable to read a CD/DVD.
Troubleshooting and problem resolution:
1. Check to determine if there is an optical drive icon in the resource manager
of the operating system. If not, restart your computer. If there is still no icon,
contact Lenovo Service. Otherwise, continue with the next step of this
procedure.
2. Confirm that the CD/DVD has been properly placed in the drive. If not, reload
the CD or DVD. Otherwise, continue with the next step of this procedure.
3. Check the specifications that came with your computer to confirm that this
optical drive is capable of reading this type of CD or DVD.
4. If the CD/DVD cannot be read, replace it with a known good CD/DVD such as
one that was shipped with the computer.
5. If the known good CD cannot be read, visually check the operating side of the
CD/DVD for defects.
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Problem: The capacity of the hard disk, as indicated by the system, is less than
the nominal capacity.
Troubleshooting and problem resolution: For computers equipped with the
OneKey Recovery feature, the system recovery feature needs to occupy some
hard disk space. This may account for the apparent hard disk capacity deficit.
Further Technical Explanation: The nominal capacity of the hard disk is
expressed in the decimal system, 1000 bytes. But the actual hard disk capacity is
expressed in the binary system as 1024 bytes (For example, the nominal capacity
1G is 1000M, while the actual capacity 1G is 1024M).
The capacity of the hard disk shown in Windows can be calculated according to
the calculations in the following example:
The nominal capacity of the hard disk is 40G, while its actual capacity
should be: 40 x 1000 x 1000 x 1000/(1024 x 1024 x 1024) = 37G.
If the Service partition of 3G - 3 x 1000 x 1000 x 1000/(1024 x 1024 x 1024)
= 2.79G is subtracted, the capacity of the hard disk shown in the system
can be obtained.
The capacity of the hard disk as calculated using this method may be slightly
different from the actual capacity due to the rounding of totals.
4.5Special considerations for troubleshooting Windows
Record the following information as it may be useful later when troubleshooting
system problems:
1. The serial number of the software. The serial number was shipped with the
computer and provided separately by the manufacturer. The Help Center is
unable to retrieve this number.
2. The drivers for this computer model only support the Windows 7 system.
3. When you use the Windows Media Center to watch TV, be particularly attentive
to the following:
• In the following two situations, you must re-save a channel list:
a. When you change your TV signal from digital to analog, your saved
channel list for digital TV is deleted. When you want to watch digital TV
again, you must create and save a new channel list.
b. When you change your TV signal from analog to digital, your saved
channel list for analog TV is deleted. When you want to watch analog TV
again, you must create and save a new channel list.
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• You must set the TV tuner input signal to analog before you can watch
Teletext programming.
4.6Performing Daily Maintenance Tasks
Cleaning the computer components
Because many of the computer components consist of sophisticated integrated
circuit boards, it is very important to periodically clean the computer to prevent
dust buildup. The cleaning supplies you need to clean the components include:
a vacuum cleaner, a soft cotton cloth, clear water (preferably purified or distilled
water) and cotton swabs.
Attention: Before you clean your computer, disconnect the computer
from the electrical outlet. Clean your computer with a soft cloth
dampened with water. Do not use liquid or aerosol cleaners, which may
contain flammable substances.
Note: To avoid damaging the computer or display, do not spray cleaning
solution directly onto the display. Only use products specifically designed
for cleaning displays, and follow the instructions included with the product.
The following are general methods for cleaning the components:
• You can use a soft cloth to remove dust on the surface of the computer, the
monitor, the printer, the speakers and the mouse.
• You can use a vacuum cleaner to clean in otherwise inaccessible corners.
• To clean the keyboard thoroughly, shut down the computer and scrub it gently
with a wet cloth. Do not use the keyboard until it is dry.
Do not do any of the following:
• Allow water to enter the computer.
• Use a heavily dampened cloth.
• Spray water directly onto the surface of the monitor or inside the computer.
LCD monitors should be cleaned daily. Use a dry cloth to brush dust from the
monitor and keyboard every day. Keep all surfaces clean and free of grease stains.
32
User Guide
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