Dell 5448 Wartungshandbuch

Inspiron 145000 SeriesService ManualComputer Model: Inspiron 5448Regulatory Model: P49GRegulatory Type: P49G001

• Philips screwdriver• Plastic scribe10

After Working Inside Your ComputerCAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.1 Replace all screws

Removing the Base CoverWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

4 Slide and lift the base cover off the base frame.1 plastic scribe 2 screws (2)3 base cover 4 tabs5 base frame13

Replacing the Base CoverWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

Removing the BatteryWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in

Replacing the BatteryWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in

Removing the Hard DriveWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

2 Gently lift the hard-drive assembly out of the base frame and disconnect the hard-drive cable from the hard drive.1 screws (3) 2 hard drive3 hard-d

4 Lift the hard-drive bracket off the hard drive.1 screws (4) 2 hard-drive bracket3 hard drive19

Notes, Cautions, and WarningsNOTE: A NOTE indicates important information that helps you make better use of your computer.CAUTION: A CAUTION indicates

Replacing the Hard DriveWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

Removing the Wireless CardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the ste

4 Lift and slide the wireless card out of the wireless-card slot.1 screw 2 wireless-card bracket3 antenna cables (2) 4 wireless card5 wireless-card s

Replacing the Wireless CardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the st

Removing the Memory Module(s)WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the

2 Slide and remove the memory module from the memory-module slot.1 securing-clips (2) 2 memory-module slot3 memory module25

Replacing the Memory Module(s)WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the

2 Slide the memory module firmly into the slot at an angle, and press the memory module down until it clicks into place.NOTE: If you do not hear the

Removing the FanWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Befo

4 Note the display-cable routing and remove the cable from the routing guides.1 latch 2 display cable3 I/O-board cable 4 fan5 Disconnect the fan cab

ContentsBefore Working Inside Your Computer...8Before You Begin ...

8 Lift the fan off the palm rest.1 fan cable 2 screws (2)3 fan30

Replacing the FanWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Bef

Removing the KeyboardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in

4 Turn the keyboard over and place it on the palm rest.1 plastic scribe 2 keyboard3 tabs33

5 Lift the latches and, using the pull tabs, disconnect the keyboard cable and keyboard-backlight cable from the system board.NOTE: The keyboard-back

Replacing the KeyboardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps i

NOTE: Keyboard-backlight cable is present only on a backlit-keyboard.1 Place the keyboard on a flat and clean surface.1 keyboard cable 2 keyboard-bac

2 Lift the keyboard cable and gently fold the keyboard-backlight cable at the fold line.1 keyboard cable 2 keyboard-backlight cable3 fold line37

3 Using the alignment line, gently fold the keyboard cable.1 keyboard cable 2 keyboard-backlight cable3 alignment line1 keyboard 2 keyboard cable3 ke

Removing the Base FrameWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

Removing the Wireless Card... 21Prerequisites...

Procedure1 Remove the screws that secure the base frame to the palm rest.1 screws (6) 2 palm rest2 Close the display and turn the computer over.40

3 Remove the screws that secure the base frame to the palm rest.1 screws (9) 2 base frame4 Using a plastic scribe, pry up the base frame.5 Lift the

6 Lift the base frame off the palm rest and slide the display cable and I/O-board cable through the base frame.1 display cable 2 plastic scribe3 I/O-

Replacing the Base FrameWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

Removing the Heat SinkWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps i

2 Lift the heat sink off the system board.1 screws (6) 2 heat sink45

Replacing the Heat SinkWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

Removing the Coin-Cell BatteryWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the

2 Peel off the coin-cell battery from the system board.1 coin-cell battery 2 coin-cell battery cable48

Replacing the Coin-Cell BatteryWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow th

Removing the Base Frame... 39Prerequisites...

Removing the SpeakersWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in

3 Release the speakers from the alignment posts and lift the speakers, along with the speaker cable, off the palm rest.1 speaker cable 2 speakers (2)

Replacing the SpeakersWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps i

Removing the I/O BoardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps i

2 Lift the I/O board off the palm rest.1 screw 2 I/O board3 I/O-board cable54

Replacing the I/O BoardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

Removing the Status-Light BoardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow th

3 Slide the status-light board cable out through the slot on the palm rest.1 latch 2 status-light board cable4 Close the display and turn the comput

5 Lift the left speaker and move it away from the status-light board.1 left speaker6 Remove the screw that secures the status-light board to the pal

7 Lift the status-light board and peel off the status-light board cable from the palm rest.1 status-light board cable 2 screw3 status-light board59

Removing the I/O Board... 53Prerequisites...

Replacing the Status-Light BoardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow t

Removing the System BoardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the step

2 Lift the latches and disconnect the status-light board cable and touchpad cable from the system board.1 status-light board cable 2 touchpad cable3

6 Lift the hard-drive cable away from the computer base.1 system board 2 screws (2)3 hard-drive cable 4 speaker cable7 Carefully lift the system boa

8 Turn the system board over.1 ports 2 system board3 power-adapter port cable64

9 Disconnect the power-adapter port cable from the system board.1 system board 2 power-adapter port cable65

Replacing the System BoardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the ste

6 Replace the fan.7 Replace the hard drive.8 Replace the battery.9 Replace the base cover.67

Removing the Display AssemblyWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the

Procedure1 Disconnect the antenna cables from the wireless card.1 antenna cables (2) 2 wireless card2 Open the display to an angle of 90 degrees.3

Removing the Power-Adapter Port...73Prerequisites...

5 Lift the display assembly off the palm rest.1 palm-rest assembly 2 screws (4)3 display hinges (2) 4 display assembly70

Replacing the Display AssemblyWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the

5 Route the antenna cables avoiding the chip and the white circle.1 wireless card 2 antenna cables (2)3 chip 4 white circle6 Connect the antenna cab

Removing the Power-Adapter PortWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow th

2 Lift the latches and disconnect the status-light board cable and touchpad cable from the system board.1 status-light board cable 2 touchpad cable3

5 Remove the screws that secure the system board to the palm rest.1 speaker cable 2 screws (2)3 system board6 Carefully lift the system board from t

9 Note the power-adapter port cable routing and lift the power-adapter port, along with its cable, off the palm rest.1 power-adapter port 2 power-ada

Replacing the Power-Adapter PortWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow t

8 Replace the base cover.78

Removing the Palm RestWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps i

Before Working Inside Your ComputerCAUTION: To avoid damaging the components and cards, handle them by their edges and avoid touching pins and contact

3 Lift the system board along with the power-adapter port and release the ports from the slots on the palm rest.1 power-adapter port 2 power-adapter

Replacing the Palm RestWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

Flashing the BIOSYou may need to flash (update) the BIOS when an update is available or when you replace the system board. To flash the BIOS:1 Turn o

Getting Help and Contacting DellSelf-Help ResourcesYou can get information and help on Dell products and services using these online self-help resourc

NOTE: If you do not have an active internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For more safety best practices, see the Reg