Device Status Leds; Keyboard Status Leds; Led Error Codes; Battery Status - Dell Latitude XT2 Service Manual

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.
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.
Battery Status
If the computer is connected to an electrical outlet, the battery light operates as follows:
Alternately blinking amber light and blue light — An unauthenticated or unsupported, non-Dell AC adapter is attached to your Tablet-PC.
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Alternately blinking amber light with steady blue light — Temporary battery failure with AC adapter present.
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Constantly blinking amber light — Fatal battery failure with AC adapter present.
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Light off — Battery in full charge mode with AC adapter present.
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Blue light on — Battery in charge mode with AC adapter present.
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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
Error Code Appearance
Caps Numeric Scroll
Lock Lock Lock
ON FLASH FLASH
FLASH ON ON
FLASH ON FLASH
OFF FLASH OFF
Description
No SODIMMs are installed
System board error
LCD Panel Error
Memory compatibility error
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.
1. Reseat the processor.
2. Replace the system board.
3. Replace the processor.
1. Reseat the LCD cable.
2. Replace the LCD panel.
3. Replace the video card / system board.
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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