Dell Latitude XT2: инструкция

Dell™ Latitude™ XT2 Service Manual 

Notes, Cautions, and Warnings 

If you purchased a Dell™ n Series computer, any references in this document to Microsoft® 

Windows

® 

operating systems are not applicable. 

Information in this document is subject to change without notice. 

© 2009 Dell Inc. All rights reserved.

Reproduction of this material in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden. 

Trademarks used in this text: 

Dell

, the 

DELL

 logo, 

Latitude, TravelLite, Wi-Fi Catcher,

 and 

ExpressCharge, 

are trademarks of Dell Inc.; 

Intel

, 

Pentium, Celeron 

a n d

 Core

 are registered 

trademarks of Intel Corporation; 

Bluetooth

 is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell under license; 

TouchStrip

 is a trademark of Zvetco Biometrics, 

LLC;

 Blu-ray Disc

 is a trademark of the Blu-ray Disc Association; 

Microsoft

, 

Windows, Windows Server, MS-DOS, Aero, Windows Vista

.

and the

 Windows Vista

 start button

are either 

trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. 

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any 

proprietary interest in trademarks and trade names other than its own. 

Model PP12S 

September 2009     Rev. A01

Tablet-PC Features

Working on Your Tablet-PC 

Adding and Replacing Parts

Specifications

Diagnostics

System BIOS

NOTE:

 A NOTE indicates important information that helps you make better use of your computer. 

CAUTION: 

A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed. 

WARNING: 

A WARNING indicates a potential for property damage, personal injury, or death. 

System BIOS 

Dell™ Latitude™ XT2 Service Manual 

BIOS Screen Navigation Keystrokes

<F12> Menu

Boot Menu

Entering System Setup

Your Tablet-PC offers the following system BIOS options: 

l

Bring up a one-time boot menu by pressing <F12> 

l

Access the System Setup utility by pressing <F2> 

BIOS Screen Navigation Keystrokes 

Use the following keystrokes to navigate the BIOS screens. 

<F12> Menu 

Press <F12> when the Dell™ logo appears to initiate a one

-time boot menu with a list of the valid boot devices for the system. 

Diagnostics

 and 

Enter Setup

options are also included in this menu. The devices listed on the boot menu depend on the bootable devices in the system. This menu is useful when you are 

attempting to boot to a particular device or to bring up the diagnostics for the system. Using the boot menu does not make any changes to the boot order 

stored in the BIOS. 

Boot Menu 

Your Tablet-PC features an enhanced one-time boot menu. The enhanced menu features the following improvements: 

l

Easier access

—

 Access the menu by pressing <F12> during system boot. 

l

User prompting

—

 The missing keystroke is now displayed on the BIOS splash screen. 

l

Added diagnostics options

—

 The boot menu now includes two new options: 

BIOS Setup

 and 

Diagnostics

.  

Entering System Setup 

Press <F2> to enter System Setup and change the user-definable settings. If you have trouble entering System Setup using this key, press <F2> when the 

keyboard LEDs first flash. 

Follow the on-screen instructions to view and/or change any settings. On each screen, the system setup options are listed at the left. To the right of each 

option is the setting or value for that option. You can change settings that appear as white type on the screen. Options or values that you cannot change 

(because they are determined by your Tablet-PC) appear less bright. 

The upper-right corner of the screen displays help information for the currently highlighted option. The lower-right corner displays information about the 

computer. System setup key functions are listed across the bottom of the screen. 

The system setup screens display the current setup information and settings for your computer, such as: 

l

System configuration 

l

Boot order 

l

Boot (start-up) configuration 

l

Basic device configuration settings 

l

System security and hard drive password settings 

Navigation Keystrokes

Action

Keystroke

Expand and collapse field

<Enter>, left- and right-arrow keys, or +/

–

Expand or collapse all fields

< >

Exit BIOS

<Esc> 

—

 Remain in Setup, Save/Exit, Discard/Exit

Change a setting

Left- and right-arrow keys

Select field to change

<Enter>

Cancel a modification

<Esc>

Reset defaults

<Alt><F> or 

Load Defaults

 menu option

NOTE:

 Depending on your computer and any installed devices, the items listed in this section may or may not appear. 

Diagnostics 

Dell™ Latitude™ XT2 Service Manual 

Device Status

Battery Status

Keyboard Status

LED Error Codes 

  Device Status LEDs 

Device status LEDs are a good source for diagnosing common problems that may occur on your Tablet-PC.  

Battery Status 

If the computer is connected to an electrical outlet, the battery light operates as follows: 

l

Alternately blinking amber light and blue light

—

 An unauthenticated or unsupported, non-Dell AC adapter is attached to your Tablet-PC. 

l

Alternately blinking amber light with steady blue light

—

 Temporary battery failure with AC adapter present. 

l

Constantly blinking amber light

—

 Fatal battery failure with AC adapter present. 

l

Light off

—

 Battery in full charge mode with AC adapter present. 

l

Blue light on

—

 Battery in charge mode with AC adapter present. 

Battery Charge and Health 

To check the battery charge, press and release the status button on the battery charge gauge to illuminate the charge-level lights. Each light represents 

approximately 20 percent of the total battery charge. For example, if four lights are on, the battery has 80 percent of its charge remaining. If no lights appear, 

the battery has no charge. 

To check the battery health using the charge gauge, press and hold the status button on the battery charge gauge for at least 3 seconds. If no lights appear, 

the battery is in good condition and more than 80 percent of its original charge capacity remains. Each light represents incremental degradation. If five lights 

appear, less than 60 percent of the charge capacity remains, and you should consider replacing the battery. 

  Keyboard Status LEDs 

The light located above the function key F4 turns on when the numeric keypad is enabled. 

The light located above the function key F5 turns on when the Scroll Lock function is enabled. 

The light located on the caps lock key turns on when the Caps Lock function is enabled. 

  LED Error Codes 

Turns on when you turn on the Tablet-PC and blinks when the Tablet-PC is in a power management mode.

Turns on when the Tablet-PC reads or writes data.

Turns on steadily or blinks to indicate battery charge status.

Turns on when wireless networking is enabled.

Turns on when a card with Bluetooth

® 

wireless technology is enabled. To turn off only the Bluetooth 

wireless technology function, right-click the icon in the system tray and select 

Disable Bluetooth Radio

.

Error Code Appearance

Description

Next Step

Caps 

Lock

Numeric 

Lock

Scroll 

Lock

ON

FLASH

FLASH

No SODIMMs are installed

1.

Install supported memory modules. 

2.

If memory is already present, reseat the module(s) one at time in each slot. 

3.

Try known good memory from another computer or replace the memory.  

4.

Replace the system board.  

FLASH

ON

ON

System board error

1.

Reseat the processor.  

2.

Replace the system board.  

3.

Replace the processor.  

FLASH

ON

FLASH

LCD Panel Error

1.

Reseat the LCD cable.  

2.

Replace the LCD panel.  

3.

Replace the video card / system board. 

OFF

FLASH

OFF

Memory compatibility error

1.

Install compatible memory modules. 

2.

If two modules are installed remove one and test. Try the other module in the 

same slot and test. Test the other slot with both modules. 

3.

Replace the memory. 

4.

Replace the system board.  

1.

Reseat the memory. 

2.

If two modules are installed remove one and test. Try the other module in the 

ON

FLASH

ON

Memory is detected but has errors

same slot and test. Test the other slot with both modules. 

3.

Replace the memory 

4.

Replace the system board.  

OFF

FLASH

FLASH

Modem Error

1.

Reseat the modem. 

2.

Replace the modem. 

3.

Replace the system board.  

FLASH

FLASH

OFF

Option ROM Error

1.

Reseat the device. 

2.

Replace the device. 

3.

Replace the system board. 

OFF

ON

OFF

Storage device error

1.

Reseat the hard drive and optical drive. 

2.

Test the computer with just the hard drive and just the optical drive. 

3.

Replace the device that is causing the failure. 

4.

Replace the system board.  

FLASH

FLASH

ON

Video card error

1.

Replace the system board.