Dell 3451 Service Manual Page 1

Inspiron 143000 SeriesService ManualComputer Model: Inspiron 14–3451Regulatory Model: P60GRegulatory Type: P60G002

Before working inside your computerCAUTION: To avoid damaging the components and cards, handle them by their edges and avoid touching pins and contact

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

• Philips screwdriver• Plastic scribe12

After working inside your computerCAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.1 Replace all screws

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 base coverWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps

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

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

3 Lift the hard-drive assembly off the computer base.1 screws (4) 2 hard-drive assembly3 hard-drive cable 4 latch4 Remove the screws that secure the

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

6 Disconnect the interposer from the hard drive.1 screws (4) 2 hard-drive bracket3 hard drive 4 interposer20

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

Removing the memory modulesWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the st

2 Slide and remove the memory module from the memory-module slot.1 securing clips (2) 2 memory module23

Replacing the memory modulesWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the s

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 c

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

3 Slide and lift the wireless card off the wireless-card slot.1 antenna cables (2) 2 wireless card3 screw 4 notch5 tab 6 wireless-card slot27

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

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

ContentsBefore working inside your computer... 10Before you begin ...

2 Carefully turn the keyboard over and place it on the palm-rest assembly.1 tabs (5) 2 plastic scribe3 keyboard 4 palm-rest assembly3 Lift the latch

4 Lift the keyboard along with the cable off the palm-rest assembly.1 latch 2 keyboard cable3 keyboard 4 palm-rest assembly31

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

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

2 Lift the latches and disconnect the touch-pad cable and power-button cable from the system board.1 power-button cable 2 screws (5)3 palm-rest assem

5 Disconnect the speaker cable from the system board.1 screws (8) 2 computer base3 speaker cable35

6 Lift the computer base and pry the palm-rest assembly off the computer base using a plastic scribe.1 computer base 2 palm-rest assembly3 plastic sc

8 Lift the palm-rest assembly at an angle and remove it from the computer base.1 palm-rest assembly 2 computer base9 Follow the procedure from step

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

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

Removing the memory modules... 22Prerequisites...

3 Lift the touch-pad bracket off the palm-rest assembly.1 touch-pad bracket 2 screws (3)4 Lift the latch and disconnect the touch-pad cable from the

6 Lift the touch pad off the palm-rest assembly.1 tape 2 palm-rest assembly3 latch 4 touch-pad cable41

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

Removing the power-button boardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow th

4 Slide and remove the power-button board along with the cable from under the tab on the palm-rest assembly.1 screw 2 power-button board3 tab 4 power

Replacing the power-button boardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow t

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

4 Lift the speakers, along with the cable, off the palm-rest assembly.1 palm-rest assembly 2 speaker cable3 speakers (2)47

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

Removing the touch pad... 39Prerequisites...

3 Lift and slide the I/O board from under the tab on the computer base.1 screw 2 I/O board3 latch 4 I/O-board cable5 tab50

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 system boardWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the step

3 Disconnect the power-adapter port cable from the system board.1 power-adapter port cable 2 display cable3 tape 4 latches (2)5 system board 6 I/O-bo

5 Lift the system board off the computer base.1 system board 2 screw6 Turn the system board over.7 Remove the coin-cell battery.8 Follow the proce

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

4 Replace the memory modules.5 Follow the procedure from step 4 to step 6 in “Replacing the hard drive”.6 Replace the base cover.7 Replace the bat

Removing the coin-cell batteryWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the

1 battery socket 2 coin-cell battery3 plastic scribe 4 system board58

Replacing the coin-cell batteryWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow th

Removing the system board...52Prerequisites...

Removing the thermal-cooling assemblyWARNING: Before working inside your computer, read the safety information that shipped with your computer and fol

3 Lift the thermal-cooling assembly off the system board.1 fan cable 2 system board3 thermal-cooling assembly 4 captive screws (4)4 Follow the proce

Replacing the thermal-cooling assemblyWARNING: Before working inside your computer, read the safety information that shipped with your computer and fo

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

2 Turn the thermal-cooling assembly over.1 screws (4) 2 fan3 thermal-cooling assembly3 Lift the fan off the thermal-cooling assembly.1 fan 2 thermal

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 display assemblyWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the

2 Slide the antenna cables into the slot on the computer base.1 antenna cables (2) 2 computer base3 Turn the computer over and open the display.4 L

5 Remove the I/O-board cable from the computer base.1 display assembly 2 computer base3 I/O-board cable 4 latch6 Note the antenna cable routing and

7 Note the display cable routing and remove the display cable from its routing guides on the computer base.1 display assembly 2 display cable3 comput

Removing the display assembly... 66Prerequisites...

9 Lift the display assembly off the computer base.1 display assembly 2 screws (2)3 hinges (2)70

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

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

2 Lift the display bezel off the display assembly.1 display bezel 2 display panel73

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

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

2 Turn the display panel over and place it on a clean surface.1 screws (4) 2 display panel3 Peel off the tape that secures the display cable to the

4 Lift the latch and disconnect the display cable from the display-back cover.1 display panel 2 latch3 display cable 4 tape5 display back-cover77

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

Removing the display hingesWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the st

Removing the display back-cover...82Prerequisites...

2 Lift the display hinges off the display back-cover.1 screws (6) 2 display hinges (2)3 display back-cover80

Replacing the display hingesWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the s

Removing the display back-coverWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow th

1 display back-cover83

Replacing the display back-coverWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow t

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

2 Disconnect the camera cable from the camera and remove the camera from the display-back cover.1 display back-cover 2 camera3 plastic scribe 4 camer

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

Removing the power-adapter portWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow th

3 Lift the power-adapter port along with the cable off the computer base.1 screw 2 power-adapter port cable3 routing guide 4 power-adapter port89

Getting help and contacting Dell...95Self-help resources...

Replacing the power-adapter portWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow t

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

1 computer base92

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

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