Dell Latitude XT2: Diagnostics

Dell
Latitude XT2

Diagnostics: Dell Latitude XT2

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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 

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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.