Dell Precision 15-5540 (P56F003) CMOS Battery Removal Tutorial

By on February 17, 2021 · 8:38 pm
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In this Dell laptop tutorial we are going to show you how to install and replace the CMOS Battery on your Precision 15-5540 laptop. These installation instructions have be made into 16 easy to follow printable steps. We have also create a video tutorial that shows you how to install your Precision 15-5540 CMOS Battery.

Before you begin

Please take the time read the following safety guidelines when working on static sensitive electrical components.
Dell repair manual service precautions

Tools needed for this laptop repair

  • 1 x small phillips head screwdriver
  • 1 x small plastic scribe
Precision 5540 Battery

Dell Laptop Replacement Parts Needed

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Precision 15 5540 Battery

Video tutorial repair manual



Installation and Removal Instructions
Precision 15-5540 CMOS Battery

Remove the 10 - M2 x 3mm Torx screws.

Step 1

  • Remove the 10 - M2 x 3mm Torx screws.
  • Remove the screws under the badge door.
Remove the 10 - M2 x 3mm Torx screws.Remove the screws under the badge door.Remove the 10 - M2 x 3mm Torx screws.
Unsnap & remove the Bottom Base Cover.

Step 2

Unsnap & remove the Bottom Base Cover.Unsnap & remove the Bottom Base Cover.
Unplug the battery cable.

Step 3

  • Unplug the battery cable.
  • Remove the 4 - M2 x 4mm screws.
Unplug the battery cable.Remove the 4 - M2 x 4mm screws.
Remove the Battery.

Step 4

Remove the Battery.Remove the Battery.
Remove the 4 - M2 x 4mm bracket screws.

Step 5

Remove the 4 - M2 x 4mm bracket screws.Remove the Hard Drive Bracket.
Unplug the cable & remove the hard drive.

Step 6

  • Unplug the cable & remove the hard drive.
Unplug the cable & remove the hard drive.Unplug the cable & remove the hard drive.
Remove the bracket screw.

Step 7

  • Remove the bracket screw.
  • Remove the bracket.
Remove the bracket screw.Remove the bracket.
Unplug the antenna cables.

Step 8

Unplug the antenna cables.Remove the Wireless Card.
Remove the 1 - M2 x 3mm screw.

Step 9

  • Remove the 1 - M2 x 3mm screw.
  • Remove the half-length M.2 SSD and bracket.
Remove the 1 - M2 x 3mm screw.Remove the half-length M.2 SSD and bracket.
Unplug the fan cable.

Step 10

Unplug the fan cable.Remove the 2 - M2 x 4mm screws.Remove the Right-Side Cooling Fan.
Remove the 1 - M2 x 2mm Wafer bracket screw.

Step 11

  • Remove the 1 - M2 x 2mm Wafer bracket screw.
  • Remove the bracket.
  • Unplug & loosen the LCD cable.
Remove the 1 - M2 x 2mm Wafer bracket screw.Remove the bracket.Unplug & loosen the LCD cable.
Unplug the fan cable.

Step 12

Unplug the fan cable.Remove the 2 - M2 x 4mm screws.Remove the Left-Side Cooling Fan.
Remove the 4 - M2 x 3mm screws.

Step 13

  • Remove the 4 - M2 x 3mm screws.
  • Remove & Clean the Heatsink.
  • ***Reapply new thermal compound before reinstalling the heatsink***
Remove the 4 - M2 x 3mm screws.Remove & Clean the Heatsink.
Unplug the DC jack cable.

Step 14

  • Unplug the DC jack cable.
  • Unplug the speaker Cable.
  • Unplug the bottom motherboard cables.
Unplug the DC jack cable.Unplug the speaker Cable.Unplug the bottom motherboard cables.
Remove the 5 - M2 x 4mm motherboard screws.

Step 15

Remove the 5 - M2 x 4mm motherboard screws.Remove the Motherboard.
Turn the motherboard over.

Step 16

  • Turn the motherboard over.
  • Unplug the CMOS cable.
  • Remove the CMOS Battery.
Turn the motherboard over.Unplug the CMOS cable.
Precision 5540 Battery

Dell Laptop Replacement Parts Needed

DIY Discount - Parts-People.com offers 5% off to all DO-IT-YOURSELFERS!
Use this coupon code to save 5% off these parts
DIYM514
Precision 15 5540 Battery

Topics: Dell Precision Repair Manuals Dell Laptop Repair Dell Repair Manuals CMOS Battery Precision 15 (5540)

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