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Diagnostics
Dell™ Latitude™ 2100 Service Manual
Diagnostic Light Codes
Battery Light Codes
Diagnostic Light Codes
Diagnostic lights are located in two areas of your computer:
•Bottom left of the palm rest
•Top right side of the keyboard
1 | power light | 2 | hard drive activity light |
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3 | battery light | 4 | wireless networking activity light |
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5 | numeric key light | 6 | caps lock light |
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7 | scroll lock light |
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Battery Light Codes
If your computer is connected to an electrical outlet, the 
light operates as follows:
•Solid blue – The battery is charging.
•Flashing blue – The battery is almost fully charged.
•Fast flashing orange and then solid green – The battery is in temporary failure.
•Fast flashing orange – The battery is in a fatal failure.
If your computer is running on a battery, the 
light operates as follows:
•Off – The battery is adequately charged, or the computer is turned off.
•Flashing orange – The battery charge is low.
•Solid orange – The battery charge is critically low.
•Fast flashing orange and then solid green – The battery is in temporary failure.
•Fast flashing orange – The battery is in a fatal failure.
No-POST Codes
The numeric key light, caps lock light, and scroll lock light are also used to diagnose issues that may occur in a
Appearance
Description
Next Step
1. Install supported memory modules.