Owners Manual
Table Of Contents
- Latitude 3490 Owner’s Manual
- Contents
- Working on your computer
- Disassembly and reassembly
- Recommended tools
- Screw size list
- SIM tray – optional
- SD card
- Base Cover
- Battery
- WLAN Card
- WWAN card – optional
- VGA board
- Memory Module
- Power button board
- Heat sink
- System Fan
- M2. SATA Solid State Drive (SSD)
- Hard drive
- Input-Output board, SD card and coin cell battery holder
- Fingerprint reader – optional
- Coin cell battery
- Speakers
- Touchpad panel
- Display assembly
- System board
- DC-In Port
- Display hinge cover
- LCD Bezel
- Camera
- LCD Panel
- eDP and camera cable
- LCD Hinge
- Palmrest
- Technical specifications
- Processor
- Memory
- Storage specifications
- Audio specifications
- Video specifications
- Webcam specifications
- Wired communications
- Wireless communications
- Ports and Connectors
- Display specifications
- Keyboards Hot Key Definitions
- Touchpad
- Battery specifications
- Adapter options
- System dimensions
- Security options
- Operating conditions
- Technology and components
- System setup options
- BIOS overview
- Entering BIOS setup program
- Navigation keys
- One time boot menu
- System Setup overview
- Accessing System Setup
- General screen options
- System Configuration screen options
- Video screen options
- Security screen options
- Secure Boot screen options
- Intel Software Guard Extensions screen options
- Performance screen options
- Power management screen options
- POST behavior screen options
- Virtualization support screen options
- Wireless screen options
- Maintenance screen options
- System logs screen options
- SupportAssist system resolution
- Verifying system memory in system setup BIOS
- Updating the BIOS
- System and setup password
- Clearing CMOS settings
- Clearing BIOS (System Setup) and System passwords
- Software
- Troubleshooting
- Contacting Dell
Drain residual flea power (perform hard reset)
Flea power is the residual static electricity that remains in the computer even after it has been powered off and the battery is
removed.
For your safety, and to protect the sensitive electronic components in your computer, you are requested to drain residual flea
power before removing or replacing any components in your computer.
Draining residual flea power, also known as a performing a "hard reset", is also a common troubleshooting step if your computer
does not power on or boot into the operating system.
To drain residual flea power (perform a hard reset)
1. Turn off your computer.
2. Disconnect the power adapter from your computer.
3. Remove the base cover.
4. Remove the battery.
5. Press and hold the power button for 20 seconds to drain the flea power.
6. Install the battery.
7. Install the base cover.
8. Connect the power adapter to your computer.
9. Turn on your computer.
NOTE: For more information about performing a hard reset, see the knowledge base article 000130881 at
www.dell.com/support.
98 Troubleshooting