Dell E5550 Owner's Manual Page 60
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- Table of contents
- BOOKMARKS
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1. Shutdown the computer.
2. Press and hold the <fn> key, while pressing the power button, and then release both.
The Enhanced Pre-boot System Assessment window displays, listing all devices detected in the
computer. The diagnostics starts running the tests on all the detected devices.
3. On the boot menu screen, select the Diagnostics option.
The Enhanced Pre-boot System Assessment window displays, listing all devices detected in the
computer. The diagnostics starts running the tests on all the detected devices.
4. If you wish to run a diagnostic test on a specific device, press <Esc> and click Yes to stop the
diagnostic test.
5. Select the device from the left pane and click Run Tests
6. If there are any issues, error codes are displayed.
Note the error code and contact Dell.
Device Status Lights
Table 29. Device Status Lights
Turns on when you turn on the computer and blinks when the computer is in a power
management mode.
Turns on when the computer reads or writes data.
Turns on steadily or blinks to indicate battery charge status.
Turns on when wireless networking is enabled.
The device status LEDs are usually located either on the top or left side of the keyboard. They display the
storage, battery and wireless devices connectivity and activity. Apart from that they can be useful as a
diagnostic tool when there's a possible failure to the system.
The following table lists how to read the LED codes when possible errors occur.
Table 30. LED Lights
Storage LED Power LED Wireless LED Fault Description
Blinking Solid Solid A possible processor failure has occurred.
Solid Blinking Solid The memory modules are detected but encountered
an error.
Blinking Blinking Blinking A system board failure has occurred.
Blinking Blinking Solid A possible graphics card/video failure has occurred.
Blinking Blinking Off System failed on hard drive initialization OR System
failed in Option ROM initialization.
Blinking Off Blinking The USB controller encountered a problem during
initialization.
Solid Blinking Blinking No memory modules are installed/detected.
60
- Dell Latitude E5550 / 5550 1
- Owner's Manual 1
- Notes, Cautions, and Warnings 2
- Working on Your Computer 3
- Recommended Tools 4
- Turning Off Your Computer 4
- System Overview 6
- Front and Back View 7
- Removing the Base Cover 8
- Installing the Base Cover 8
- Removing the Battery 8
- Installing the Battery 9
- Removing the Memory 12
- Installing the Memory 12
- Removing the Keyboard Trim 12
- Installing the Keyboard Trim 13
- Removing the Keyboard 13
- Installing the Keyboard 14
- Removing the Palmrest 14
- Installing the Palmrest 16
- Removing the USH Board 19
- Installing the USH Board 20
- Removing the LED Board 21
- Installing the LED Board 22
- Removing the WLAN Card 24
- Installing the WLAN Card 24
- Removing the WWAN Card 25
- Installing the WWAN Card 25
- Removing the Display Assembly 27
- Removing the Display Bezel 29
- Installing the Display Bezel 30
- Removing the Display Panel 30
- Installing the Display Panel 32
- Removing the Display Hinges 32
- Installing the Display Hinges 33
- Removing the Camera 33
- Installing the Camera 34
- Removing the eDP Cable 34
- Installing the eDP cable 35
- Removing the System Fan 35
- Installing the System Fan 36
- Removing the Audio Board 36
- Installing the Audio Board 37
- Removing the System Board 37
- Installing the System Board 39
- Removing the Heatsink 40
- Installing the Heatsink 41
- Removing the Speakers 42
- Installing the Speakers 43
- System Setup Options 44
- Table 2. System Configuration 45
- Table 3. Video 47
- Table 4. Security 47
- Table 5. Secure Boot 48
- Table 6. Performance 49
- Table 7. Power Management 50
- Table 8. POST Behavior 51
- Table 10. Wireless 53
- Table 11. Maintenance 53
- Table 12. System Logs 53
- Technical Specifications 54
- Table 16. Audio 55
- Table 17. Video 55
- Table 18. Camera 55
- Table 19. Communications 55
- Table 22. Display 56
- Table 23. Keyboard 57
- Table 24. Touchpad 57
- Table 25. Battery 57
- Table 26. AC Adapter 57
- Table 27. Physical 58
- Table 28. Environmental 58
- Diagnostics 59
- Device Status Lights 60
- Battery Status Lights 61
- Contacting Dell 62
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