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Dell Latitude 5500 Service Manual

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System diagnostic lights

Battery-status light

Indicates the power and battery-charge status.

Solid white — Power adapter is connected and the battery has more than 5 percent charge.

Amber — Computer is running on battery and the battery has less than 5 percent charge.

Off
  • Power adapter is connected and the battery is fully charged.
  • Computer is running on battery and the battery has more than 5 percent charge.
  • Computer is in sleep state, hibernation, or turned off.

The power and battery-status light blinks amber along with beep codes indicating failures.

For example, the power and battery-status light blinks amber two times followed by a pause, and then blinks white three times followed by a pause. This 2,3 pattern continues until the computer is turned off indicating no memory or RAM is detected.

The following table shows different power and battery-status light patterns and associated problems.

Table 1. LED codesLED light codes for component issues/failure in the product.
Diagnostic light codes Problem description
2,1 Processor failure
2,2 System board: BIOS or ROM (Read-Only Memory) failure
2,3 No memory or RAM (Random-Access Memory) detected
2,4 Memory or RAM (Random-Access Memory) failure
2,5 Invalid memory installed
2,6 System-board or chipset error
2,7 Display failure
2,8LCD power rail failure
3,1 Coin-cell battery failure
3,2 PCI, video card/chip failure
3,3 BIOS Recovery image not found
3,4 BIOS Recovery image found but invalid
3,5EC ran into power sequencing failure
3,6System BIOS Flash incomplete
3,7 Management Engine (ME) error

Camera status light: Indicates whether the camera is in use.

  • Solid white — Camera is in use.
  • Off — Camera is not in use.

Caps Lock status light: Indicates whether Caps Lock is enabled or disabled.

  • Solid white — Caps Lock enabled.
  • Off — Caps Lock disabled.

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