Dell 5551 Service Manual

Inspiron 155000 SeriesService ManualComputer Model: Inspiron 15–5551Regulatory Model: P51FRegulatory Type: P51F003

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

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

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

3 Slide the optical-drive assembly out of the optical-drive bay.1 optical-drive assembly 2 optical-drive slot3 plastic scribe 4 screw4 Carefully pul

5 Remove the screws that secure the optical-drive bracket to the optical drive and remove the optical-drive bracket.1 optical-drive bezel 2 optical d

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

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

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

2 Remove the memory module from the memory-module slot.1 securing clips (2) 2 memory-module slot3 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 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 out of the computer base using the hard-drive pull tab.1 screws (4)2 hard-drive pull tab3 hard-drive assembly 4 hard-d

4 Disconnect the interposer from the hard drive.1 hard-drive assembly 2 interposer5 Remove the screws that secure the hard-drive bracket to the hard

6 Lift the hard-drive bracket out of the hard drive.1 screws (4) 2 hard-drive bracket3 hard drive29

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

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 Slide the wireless card out of the wireless-card slot.1 antenna cables (2) 2 wireless-card bracket3 screw 4 wireless card32

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

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

1 plastic scribe 2 coin-cell battery3 battery socket35

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

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

3 Slide the keyboard up to release it from the tabs on the palm-rest assembly.1 securing clips (5) 2 plastic scribe3 keyboard 4 tabs (6)5 palm-rest a

5 Lift the latches and disconnect the keyboard cable and backlight cable from the system board.1 backlight cable 2 latches (2)3 keyboard cable 4 keyb

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

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

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

2 Remove the screws that secure the computer base to the palm-rest assembly.1 screws (5) 2 optical-drive cable3 latch3 Close the display and turn th

5 Remove the screws that secure the computer base to the palm-rest assembly.1 screws (15) 2 speaker cable6 Using your fingertips, pry up the compute

7 Lift the computer base off the palm-rest assembly and slide the antenna cables through the computer base.1 computer base 2 tabs3 antenna cables8 F

9 Lift the optical-drive interposer along with the cable off the computer base.1 optical-drive interposer1 computer base45

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

Removing the optical-drive interposerWARNING: Before working inside your computer, read the safety information that shipped with your computer and fol

2 Lift the optical-drive interposer along with the cable off the computer base.1 computer base 2 optical-drive interposer48

Replacing the optical-drive interposerWARNING: Before working inside your computer, read the safety information that shipped with your computer and fo

Removing the keyboard... 37Prerequisites...

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 speaker cable, off the computer base.1 speakers (2) 2 rubber grommets (4)3 speaker cable 4 routing guides5 comput

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

4 Lift the I/O board off the palm-rest assembly.1 I/O board 2 screw3 latch 4 pull-tab5 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 heat-sink assemblyWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow th

3 In sequential order (indicated on the heat-sink assembly), remove the screws that secure the heat-sink assembly to the system board.4 Lift the hea

Replacing the heat-sink assemblyWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow t

7 Replace the battery.59

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

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

3 Slide the power-button board cable out through the slot on the palm-rest assembly.1 slot 2 power-button board cable4 Close the display and turn th

7 Lift the power-button board at an angle along with the cable off the palm-rest assembly.1 power-button board cable 2 screw3 tape 4 power-button boa

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

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

3 Lift the latch and disconnect the touchpad cable from the connector on the system board.1 power-button board cable 2 touchpad cable3 latch4 Close

6 Remove the screw that secures the system board to the palm-rest assembly.1 screw 2 display cable3 latch 4 system board7 Carefully lift the system

8 Turn the system board over.1 system board9 Lift the latch and disconnect the I/O-board cable from the system board.10 Disconnect the power-adapte

11 Lift the system board off the palm-rest assembly.1 latch 2 I/O-board cable3 system board 4 power-adapter port cable68

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

Removing the display assembly...71Prerequisites...

2 Follow the procedure from step 3 to step 8 in ”Replacing the computer base".3 Replace the keyboard.4 Replace the wireless card.5 Replace th

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

3 Note the display cable routing and remove the cable from its routing guides.1 antenna cables 2 routing guides3 system board 4 display cable5 latch4

8 Lift the display assembly off the palm-rest assembly.1 palm-rest assembly 2 screws (4)3 display assembly73

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 Remove the display bezel off the display back-cover.1 display bezel 2 display back-cover76

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 Gently lift the display panel and turn it over.1 screws (4) 2 display panel3 Peel the tape adhered over the display cable.79

Removing the display cable... 85Prerequisites...

4 Disconnect the display cable from the display-panel cable connector.1 display panel 2 display cable3 tape5 Lift the display panel away from the di

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

2 Lift the display hinges off the display back-cover.1 screws (8) 2 display hinges (2)83

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

4 Note the display cable routing and remove the display cable from the display back-cover.1 display cable 2 routing guides3 tape 4 camera cable5 came

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

Removing the display back-cover and antenna assemblyWARNING: Before working inside your computer, read the safety information that shipped with your c

1 display back-cover and antenna assembly89

Removing the palm-rest assembly...97Prerequisites...

Replacing the display back-cover and antenna assemblyWARNING: Before working inside your computer, read the safety information that shipped with your

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

3 Lift the camera off the display back-cover.1 camera cable 2 plastic scribe3 camera 4 display back-cover92

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 its cable, off the palm-rest assembly.1 screw 2 power-adapter port3 power-adapter port cable 4 routing guid

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

Removing the palm-rest assemblyWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow th

1 palm-rest assembly 2 touchpad cable98

Replacing the palm-rest assemblyWARNING: Before working inside your computer, read the safety information that shipped with your computer and follow t