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Surface Laptop 3 and Laptop 4 Component Disassembly and Reassembly

  • Applies to: Windows 10, Windows 11

Warning

Review the General Safety Precautions and Battery Safety guidelines in their entirety before proceeding with any repair steps.

Important

Read this Guide in its entirety before starting any repairs. If at any point you're unsure or uncomfortable about performing the repairs, as detailed in this Guide, DO NOT proceed. Contact Microsoft for more support options.

Warning

Failure to follow the instructions in this Guide, use of non-Microsoft (nongenuine), incompatible, or modified replacement parts, and/or failure to use proper tools could result in serious injury, death, and/or damage to the product or other property.

Prerequisite Steps

  • Power off device – Ensure the device is powered off completely and the battery has been fully discharged. Refer to the Repair-specific precautions and warnings section for guidelines. Once discharged, the device should be disconnected from all power sources.

  • ESD Prevention – Ensure ESD prevention steps and general guidelines are followed before opening the device. Refer to the ESD Prevention section for guidelines.

  • Position Device – To prevent damage to the device, ensure the device is placed on a clean surface free of debris.

Non-Skid Foot Pad Replacement Process

Preliminary Requirements

Important

Be sure to follow all special (bolded) notes of caution within each process section.

Required Tools and Components

  • Tools:
    • Plastic tweezers / spudger
    • Isopropyl Alcohol Dispenser Bottle (use only 70% IPA)
    • Cleaning swabs
    • Clamps (2), 2” Irwin spring or 4.5” Fast pro
    • Plastic feeler gauge – 0.050mm
  • Components:

Prerequisite Steps

  • Power off device - Ensure device is powered off and disconnected from a power supply.
  • General Safety - Check to make sure that general guidelines and ESD compliance steps are followed before opening the device. Refer to Prior to Device Disassembly section for details.
  • Position device - To prevent scratches, flip device over onto a clean surface free of debris with the device bottom facing up for access to the feet for removal.

Important

There are two types of feet (front and back) – refer to illustration for details.

Procedure – Removal (Non-Skid Foot Pad)

  1. Front foot removal – To remove front feet, insert the pointed end of a plastic Spudger tool (pictured) from the long side of the device under the foot. There's a designed gap in the foot located at the center of the outside edge of the foot. Point the plastic tool directly in the middle of the foot starting from the front edge and push in towards the middle of the device. Removal works best if the spudger is at a relatively low angle relative to the tabletop. Use plastic tweezers / spudger to lift one edge of each foot. Grasp the loose end and pull the foot from the D-bucket.

  2. Rear foot removal – To remove back feet, perform the same steps as for the front feet but from the back side of the device and along the long edge. Removal works best if the spudger is at a relatively low angle relative to the tabletop.

    A drawing of a helicopter AI-generated content might be incorrect.

  3. Adhesive removal – Remove any adhesive liners in the foot pockets. Use IPA and cotton wipes to clean off any adhesive residue within the foot pocket. Inspect the foot area carefully for any adhesive liner that might have remained. The liner is clear and might be hard to see at first glance. Inspect closely.

Important

Ensure the IPA is dried off device and that no adhesive residue is left before applying new feet to avoid the risk of insufficient adhesion of the new feet.

Procedure – Installation (Non-Skid Feet)

Important

Any further repairs that are required on the device should be carried out before feet installation. Don't reuse feet previously removed from a device.

  1. Prepare new front feet and press into place – To reassemble front foot, remove protective sheet to expose adhesive on foot. Align the 3 posts with their respective pockets on the bottom side of the unit and hand press the foot in until the foot sits flat. Complete previous steps for the other front foot.

  2. Clamp replaced feet – Align and center the press head of the clamp onto the front feet. Clamp both front feet for 4 minutes.

    Screenshot that shows clamp positioning centered over both front feet during adhesion setting period.

  3. Inspect for anomalies – Inspect feet to ensure no cosmetic damage or gaps between the feet and the D-bucket exist.

    1. If gap exists, use a feeler gauge to verify gap is smaller than 0.05 mm. If gap is larger, replace foot.

    Diagram of using a 0.05-mm feeler gauge to verify minimal gap beneath newly installed front foot.

  4. Prepare new back feet and press into place – To reassemble the back feet, remove protective sheet to expose adhesive on foot. Insert the foot into the pocket on the bottom side of the unit and hand press the foot in until the foot sits flat.

  5. Clamp replaced feet – Align and center the press head of the clamp onto the rear feet. Clamp both rear feet for 4 minutes.

  6. Inspect for anomalies – Inspect feet to ensure no cosmetic damage or gaps between the feet and the D-bucket exist.

    1. If gap exists, use a feeler gauge to verify gap is smaller than 0.05 mm. If gap is larger, replace foot.

    Diagram of checking rear foot seating with feeler gauge ensuring gap is under 0.05 mm.

  7. Run SDT – Run SDT to ensure all device features and functions operate as expected.

Important

Before transporting the device, we recommend letting it sit feet-down on a tabletop for at least 12 hours. If this isn’t possible, it’s recommended to avoid placing the device in a backpack, purse, other types of carriers, until at least 12 hours after installing new feet.

Alternate Procedure – Installation (Non-Skid Feet)

Important

Any further repairs that are required on the device should be carried out before feet installation. Don't reuse feet previously removed from a device.

  1. Prepare new front feet and press into place – To reassemble front foot, remove protective sheet to expose adhesive on foot. Align the 3 posts with their respective pockets on the bottom side of the unit and hand press the foot in until the foot sits flat. Complete previous steps for the other front foot.

  2. Pinch replaced feet – Placing the keyboard and foot between your thumb and index finger as shown, pinch the foot tightly with your thumb and hold for 20 seconds.

    Screenshot that shows thumb and index finger pinch technique applying pressure to front foot for 20 seconds.

  3. Inspect for anomalies – Inspect feet after pinching to ensure no cosmetic damage or gaps between the foot and the chassis exist.

    1. If gap exists, use a feeler gauge to verify gap is smaller than 0.05 mm. If gap is larger, replace foot.

    Diagram of measuring post-pinch front foot gap with feeler gauge to confirm proper seating.

  4. Prepare new back feet and press into place – To reassemble the back feet, remove protective sheet to expose adhesive on foot. Insert the foot into the pocket on the bottom side of the unit and hand press the foot in until the foot sits flat.

  5. Pinch replaced feet – Placing the keyboard and foot between your thumb and index finger as shown, pinch the foot tightly with your thumb and hold for 20 seconds.

    Screenshot that shows pinch pressure applied to rear feet with fingers during alternate installation.

  6. Inspect for anomalies – Inspect feet to ensure no cosmetic damage or gaps between the feet and the D-bucket exist.

    1. If gap exists, use a feeler gauge to verify gap is smaller than 0.05 mm. If gap is larger, replace foot.

    Diagram of verifying rear foot gap after pinch using feeler gauge for final inspection.

  7. Run SDT – Run SDT to ensure all device features and functions operate as expected.

Important

Before transporting the device, we recommend letting it sit feet-down on a tabletop for at least 12 hours. If this isn’t possible, it’s recommended to avoid placing the device in a backpack, purse, other types of carriers, until at least 12 hours after installing new feet.

C-cover Keyboard Assembly Replacement Processes (Metal, Fabric)

Important

Devices are built with either a fabric type or metal type C-cover keyboard assembly. The C-cover removal process differs between the metal type and the fabric type C-covers. Be sure to follow the proper procedure based on the device model and associated C-cover type.

Replacement Process (C-cover Keyboard Metal type) Preliminary Requirements

Important

Be sure to follow all special (bolded) notes of caution within each process section.

Required Tools and Components

  • Tools:
    • Software Tool – SDT
    • Isopropyl Alcohol Dispenser (use only 70% IPA)
    • 5IP (Torx plus) driver
    • Anti-static wrist strap (1M Ohm resistance)
    • Recommended: ESD-safe battery cover (13.5” or 15”)
  • Components:

Prerequisite Steps

  • Power off device – Ensure device is powered off and disconnected from a power supply.
  • General Safety – Check to make sure that general guidelines and ESD compliance steps are followed before opening device. Refer to Prior to Device Disassembly section for details.
  • Remove feet – Follow steps for Procedure-Removal (Non-Skid Feet) section.

Important

Be sure that all foot adhesive remains have been removed from the bottom device case foot sockets before C-cover screw removal to avoid the risk of stripping out the C-cover screws.

Procedure – Removal (C-cover Keyboard Metal Type)

  1. Remove C-cover screws – Using a 5IP (Torx plus) driver, uninstall 1 screw from each foot socket (4).

Caution

Take care to prevent from depressing the keyboard power button during this step. If power button is accidentally depressed and device turns on, shut down device as normal through OS Start menu.

Caution

Prior to unscrewing, ensure the driver is seated correctly in the screw recess by lightly turning the driver clockwise until it can be felt engaging fully with the screw. Also be sure the driver remains perpendicular to the device surface as much as possible during removal. Otherwise, there's a risk of stripping the screw heads.

Caution

Ensure all (4) screws are removed from the enclosure before starting C-cover removal, otherwise there's a high risk of irreversibly damaging the C-cover.

Caution

Remove C-Cover exactly as described in this step to avoid damaging the Flexible Printed Circuit (FPC) connected between the C-Cover and the Main Board.

Caution

Remove C-cover and hold in a hover position as described to avoid damaging the display glass. Never rest the rear edge of the C-cover on the device at the display hinge point or allow the C-cover to impact or touch the display during this step.

Diagram of lifting C-cover at a shallow angle while avoiding hinge and display contact during removal.

Important

In addition to the (4) C-cover screws, the C-cover is further secured to the device body with magnets. Further separation of the C-cover should be carried out per the following steps.

  1. Separate C-cover from device – Turn device over into standard use position and open the AB-cover display exposing the C-cover keyboard. Grab the C-cover edge closest to display and slowly remove the C-cover at an angle as shown in drawing.

Caution

Don't pull the C-cover apart beyond 45 degrees otherwise damage to C-cover FPC could occur.

  1. Position C-cover for FPC removal – After lifting the C-cover completely from the magnets on the device, angle and hover the C-cover so that the antenna side is facing down towards the device and C-cover FPC is accessible.

    Diagram of hovering C-cover to expose keyboard FPC connector orientation before disconnect.

  2. Disconnect FPCs – While hovering the C-cover, disconnect the FPC from the main board with your other hand. The FPC is easily disconnected by pulling up on the metal head vertically with a fingernail or Spudger tool edge.

    Screenshot that shows upward pry on metal FPC head with spudger for safe disconnection.

Caution

When removed from the device, place the C-cover in a safe place with key and trackpad side down and FPC facing up to avoid bending/creasing the FPC. Be sure the key and trackpad side of the C-cover is protected from cosmetic damage during storage.

Warning

It's recommended a Microsoft provided ESD-safe battery cover appropriate for size (either 13.5” or 15” device) is placed across the device to protect the battery from any accidental damage during repair. Ensure corners of cover are aligned with the corners of the device always during repair. If battery cover is misaligned during the repair operation in any way, realign before continuing repair activities.

Diagram of ESD-safe battery cover positioned over internal battery during service.

Important

Remove rSSD (removable Solid-State Drive) whenever C-cover is removed from device. rSSD removal disconnects the battery from all device logical components for safety purposes. Refer to Procedure-Removal (rSSD) section for details.

Procedure – Installation (C-cover Keyboard Metal type)

  1. Preinstallation Device Inspection

Warning

Verify the battery’s condition refer to the M1153910 In Device Battery Inspection process. Devices exhibiting battery issues as outlined in the Battery Inspection Process require whole unit replacement.

Warning

Verify the condition of LDI (Liquid Damage Indicator) inside the audio jack. Use a bright light to illuminate the interior of the audio jack port. Any color other than white indicates liquids have entered the device. Devices exhibiting LDI require whole unit replacement.

  1. Check for unexpected items within device – Check C-cover (both sides) and device enclosure for any loose articles that might be present inadvertently on the C-cover or within the device enclosure areas.

    1. Check and remove any foreign objects that the magnets might have attracted or that might have been accidentally introduced into the device during replacement.
    2. Carefully inspect the area around battery specifically for any foreign objects before removing battery cover.
    3. Install rSSD – Refer to Procedure-Removal (rSSD) for details.
    4. Remove tape from new C cover FPC – Tape secures the C-cover FPC during shipping. Remove this tape before continuing with assembly.
    5. Connect C-cover FPC – Remove battery cover. Hover the C-cover over the device while assembling the C-cover FPC to the main board by pressing connection using your finger.

    Caution

    Be sure that FPC bends fall in place properly as prebent and no folds or creases are created during reassembly of C-cover.

    Diagram of aligning C-cover using front edge posts before snapping evenly into place.

  2. Align the C-cover – Properly align the cover to the unit using the front edge alignment posts. Carefully place the C-cover back onto the unit and shift until the C-cover snaps into place.

Caution

Ensure that the C-cover is correctly aligned and seated before closing the device. There's the risk of breaking the display if the device lid is closed before C-cover is aligned.

  1. Install C-cover Screws – Close the AB-cover. Turn the unit over and use a 5IP screwdriver to install 4 new screws to secure the C-cover. Screws should be installed until snug and seated, and then turned another 45 degrees (1/8 turn) or until fully fastened.
  2. Run SDT – Run SDT to ensure all device features and functions operate as expected. Refer to SDT section for details on SDT.
  3. Install Feet – If SDT tests pass and no further repairs are to be performed on the device, follow steps for Procedure – Installation (Non-Skid Feet).

Replacement Process (C-cover Keyboard Fabric type)

Preliminary Requirements

Important

Be sure to follow all special (bolded) notes of caution within each process section.

Required Tools and Components

  • Tools:
    • Software Tool – SDT
    • Isopropyl Alcohol Dispense (use only 70% IPA)
    • 5IP (Torx plus) driver
    • Heavy duty suction cups
    • Anti-static wrist strap (1M Ohm resistance)
    • Recommended: ESD-safe battery cover (13.5” or 15”)
  • Components:

Prerequisite Steps

Important

Be sure that all foot adhesive remains have been removed from the bottom device case foot sockets before C-cover screw removal to avoid the risk of stripping out the C-cover screws.

Procedure – Removal (C-cover Keyboard Fabric Type Keyboard)

  1. Remove C-cover screws – Using a 5IP (Torx plus) driver, uninstall 1 screw from each foot socket (4).

Caution

Take care to prevent from depressing the keyboard power button during this step. If power button is accidentally depressed and device turns on, shut down device as normal through OS Start menu.

Caution

Prior to unscrewing, ensure the driver is seated correctly in the screw recess by lightly turning the driver clockwise until it can be felt engaging fully with the screw. Also be sure the driver remains perpendicular to the device surface as much as possible during removal. Otherwise, there's a risk of stripping the screw heads.

Caution

Ensure all (4) screws are removed from the enclosure before starting C-cover removal, otherwise there's a high risk of irreversibly damaging the C-cover.

Caution

Fabric C-covers utilize magnets and a hook latching onto the chassis whereas metal C-covers don't. See illustrations for details.

Caution

Remove C-Cover exactly as described in this step to avoid damaging the Flexible Printed Circuit (FPC) connected between the C-Cover and the Main Board.

Caution

Remove C-cover and hold in a hover position as described to avoid damaging the display glass. Never rest the rear edge of the C-cover on the device at the display hinge point or allow the C-cover to impact or touch the display during this step.

  1. Apply suction cups – Turn device over into standard use position and open the AB-cover display exposing the C-cover keyboard. Place suction cup in the bottom palm rest area as shown, as close to the edge as possible.

    Caution

    Don't pull the C-cover apart beyond 45 degrees otherwise damage to C-cover FPC could occur.

    Caution

    Don't place suction cup on Trackpad to avoid potential damage to the Trackpad.

    Caution

    Don't wet the suction cup in any way as liquid could stain the keyboard fabric. Place thumb holding down the corner hinge side of the cover closest to the user as shown. Keep pressure on the hinge area to prevent back edge of cover from lifting while pulling up on the suction cup. Be careful to prevent back edge from lifting. If suction cup releases before C-cover is separated from device bottom case then reattach suction cup and try again.

    Diagram of suction cup placement on palm rest for fabric C-cover separation.

  2. Separate C-cover from device – Once C-cover separation from the device bottom case is achieved, place a finger between the C-cover and device region. Pull upwards slightly to separate the C-cover from the magnets.

    Diagram of inserting finger between fabric C-cover and chassis to lift away from magnets.

  3. Angle C-cover – Angle the C-cover at approximately 45 degrees from horizonal—be sure to angle the C-cover no more than 45 degrees or else risk damaging the C-cover hook or FPC. If hook is damaged, it needs to be removed carefully to avoid damaging the FPCs, and then a new C-cover needs to be installed.

  4. C-cover hook clearance – Once angled, keep the angle of the C-cover while pulling the C-cover directly towards yourself. Be sure to avoid pressing on the power button during this procedure.

    Diagram of maintaining 45-degree angle while translating C-cover forward to clear hook latch.

  5. Disconnect FPCs – While hovering the C-cover, disconnect the FPC from the main board with your other hand. The FPC is easily disconnected by pulling up on the metal head vertically with a fingernail or Spudger tool edge. Screenshot that shows vertical lift on fabric C-cover FPC connector for disconnection.

Caution

When removed from the device, place the C-cover in a safe place with key and trackpad side down and FPC facing up to avoid bending/creasing the FPC. Be sure the key and trackpad side of the C-cover is protected from cosmetic damage during storage.

Warning

It's recommended an ESD-safe battery cover appropriate for size (either 13.5” or 15”device) across the device to protect the battery from any accidental damage during repair. Ensure corners of cover are aligned with the corners of the device always during repair. If battery cover is misaligned during the repair operation in any way, realign before continuing repair activities.

Diagram of correctly aligned ESD battery cover protecting pack during fabric C-cover removal.

Important

Remove rSSD (removable Solid-State Drive) whenever C-cover is removed from device. rSSD removal disconnects the battery from all device logical components for safety purposes. Refer to Procedure-Removal (rSSD) section for details.

Procedure – Installation (C-cover Keyboard Fabric type)

  1. Preinstallation Device Inspection

Warning

Verify the battery’s condition; refer to the M1153910 In Device Battery Inspection process. Devices exhibiting battery issues as outlined in the Battery Inspection Process require whole unit replacement.

Warning

Verify the condition of LDI (Liquid Damage Indicator) inside the audio jack. Use a bright light to illuminate the interior of the audio jack port. Any color other than white indicates liquids have entered the device. Devices exhibiting LDI require whole unit replacement.

  1. Check for unexpected items within device – Check C-cover (both sides) and device enclosure for any loose articles that might be present inadvertently on the C-cover or within the device enclosure areas.

    1. Check and remove any foreign objects that the magnets might have attracted or that might have been accidentally introduced into the device during replacement.
    2. Carefully inspect the area around battery specifically for any foreign objects before removing battery cover.

  2. Install rSSD – Refer to Procedure-Removal (rSSD) section. for details.

  3. Remove tape from new C-cover FPC – Tape secures the C-cover FPC during shipping. Remove this tape before continuing with assembly.

  4. Connect C-cover FPC – Remove battery cover. Hover the C-cover over the device while assembling the C-cover FPC to the main board by pressing connection using your finger.

    Caution

    Be sure that FPC bends fall in place properly as prebent and no folds or creases are created during reassembly of C-cover.

    Diagram of pressing protruding top C-cover area until click for flush alignment under display.

  5. Align the C-cover – Properly align the cover to the unit using the front edge alignment posts. Carefully place the C-cover back onto the unit and shift until the C-cover snaps into place. The top C-cover area under the display will protrude slightly after C-cover is placed. Press firmly on the top area until you hear a click and the C-cover flattens out.

Caution

Ensure that the C-cover is correctly aligned and seated before closing the device. There's the risk of breaking the display if the device lid is closed before C-cover is aligned.

  1. Install C-cover Screws – Close the AB-cover. Turn the unit over and use a 5IP screwdriver to install 4 new screws to secure the C-cover. Screws should be installed until snug and seated, and then turned another 45 degrees (1/8 turn) or until fully fastened.
  2. Run SDT – Run SDT to ensure all device features and functions operate as expected. Refer to SDT section for details on SDT.
  3. Install Feet – If SDT tests pass and no further repairs are to be performed on the device, follow steps for Procedure – Installation (Non-Skid Feet).

rSSD Replacement Process

Preliminary Requirements

Important

Be sure to follow all special (bolded) notes of caution within each process section.

Required Tools and Components

  • Tools:
    • Software Tool – SDT
    • Isopropyl Alcohol Dispenser (use only 70% IPA)
    • 5IP (Torx plus) driver
    • Anti-static wrist strap (1M Ohm resistance)
    • Recommended: ESD-safe battery cover (13.5” or 15”)
  • Components:

Prerequisite Steps

Procedure – Removal (rSSD)

  1. Remove rSSD Screw – Use a 5IP (Torx-Plus) driver to remove the screw securing the rSSD.

Warning

Be careful to position your screwdriver directly over the rSSD screw and to avoid slipping towards the battery during removal. If the battery is contacted, impacted, or damaged in any way during the rSSD removal process, activities should immediately cease, and designated return process should be followed.

  1. Remove rSSD – The rSSD should lift upwards to ~15-degree tilt after screw is removed. Carefully grab sides of rSSD case and pull out of main board socket at same ~15-degree angle.

Important

Confirm condition of thermal pillow that resides beneath the rSSD once rSSD has been removed. Thermal pillow should maintain good contact with an installed rSSD and shouldn't have physical evidence of deterioration such as collapsing, excessive cracking etc. The outside mylar layer of the foam should be intact and no foam should be visible when viewed from above.

Screenshot that shows rSSD lifted at ~15 degrees revealing thermal pillow for inspection.

Procedure – Installation (rSSD)

Important

Only a Microsoft rSSD with part number as specified in the parts list, per device model, and of like capacity should be replaced in the device.

  1. Insert rSSD – Insert the connector end of the rSSD into the SSD connector on Mainboard at ~15-degree angle.
  2. Install new rSSD screw – Use a 5IP screwdriver to install a new rSSD screw until the screw is snug and seated, and then turned another 45 degrees (1/8 turn) or until screw is fully fastened.

Warning

Be careful to position your screwdriver directly over the rSSD screw and to avoid slipping towards the battery during removal. If the battery is contacted, impacted, or damaged in any way during the rSSD removal process, activities should immediately cease, and designated return process should be followed.

  1. Install C-cover – Follow steps for C-cover Keyboard Assembly Replacement Processes (Metal, Fabric) section.
  2. Imaging new rSSD – Power on device. Apply a new image to the rSSD using a BMR Imaging key specific to the device model. Refer to Surface imaging process - Surface Imaging Tools Link
  3. Run SDT – Run SDT to ensure all device features and functions operate as expected. Refer to SDT section for details on SDT. If SDT tests pass and no further repairs are to be performed on the device continue with the final assembly steps.
  4. Install Feet – Follow steps for Procedure – Installation (Non-Skid Feet).

AB-cover Display Assembly Replacement Process

Warning

The AB-cover is sensitive to ESD and should be managed accordingly. Be sure all ESD safety precautions are taken when handling the AB-cover assembly. AB-cover assembly should always be stored in an ESD bag once new part is removed from package carton. Defective part should be managed in the same manner to enable recovery if applicable.

Important

The C-cover keyboard assembly type (fabric or metal) on the device being repaired will drive slight differences in processes in this section. Be sure to follow proper sections and associated procedures based on C-cover keyboard assembly type for the device under repair.

Important

The device must first be set in AB-cover Replacement Mode before broken/defective AB-cover is removed from device under repair. Software tools are provided for this purpose. Device must be functional to the point that software tools can be run on device from within the Windows OS. Details provided within process steps in this section.

Important

If AB-cover on device under repair is nonfunctional, there's no display or it's unreadable, connect an external PC monitor to the device’s Mini-DP port.

Preliminary Requirements

Important

Be sure to follow all special (bolded) notes of caution within each process section.

Required Tools and Components

  • Tools
    • Software Tool – SDT
    • Software Tool – AB-cover touch calibration tool
    • USB hub
    • USB keyboard (standard PC USB keyboard needed for interaction while running software tools)
    • USB mouse (standard PC USB mouse)
    • Standard PC monitor with HDMI or DVI input
    • Mini-DP port to HDMI/DVI dongle
    • 6IP (Torx plus) driver
    • ESD-safe tweezers
    • Feeler gauge – 0.40mm
    • Guitar pick opening tool
    • Anti-static wrist strap (1M Ohm resistance)
    • Recommended: ESD-safe battery cover (13.5” or 15”)
  • Components:

    • AB-cover (Refer to Illustrated Service Parts List) New 6IP screw quantity=6 (supplied with AB-cover replacement part)

      New set of AB-cover FPC RF baffles (supplied with AB-cover replacement part)

      New set of AB-cover FPC RF shields (supplied with AB-cover replacement part)

      One set of new mylar tapes for metal C-cover only (supplied with AB-cover replacement part)

      One set of new closure steels for metal C-cover only (supplied with AB-cover replacement part)

Prerequisite Steps

  • AB-cover Replacement Mode – Pulls calibration data from the old AB-Cover.
  1. Connect software tools USB drive with software tools to USB connector on device under repair.
  2. Connect power supply to device to enable power-on.
  3. Power on device – Depress the power button on the C-cover to power on the device.
  4. Run software tool – At the device OS, use Windows Explorer, navigate to USB drive and run: STEP1_DisplayModuleReplacement.cmd – accept the power down prompt once tool is run.

Important

This step must be carried out on the device successfully before the broken/faulty AB-cover display assembly is replaced. Retry previous step if error message received.

Removal Process (AB-cover Display Assembly)

  1. Disconnect Antenna Cable – Using angled tweezers, disassemble left antenna cable located to the left of the left AB-cover FPC RF shield. This prevents the antenna cable from being damaged during shield removal. Diagram of angled tweezers disconnecting left antenna cable beside RF shield.

  2. Remove FPC RF Baffles – Using tweezers, remove the left and right baffles that sit on top of the RF shield cans by prying upwards starting from one end of the baffle.

    Diagram of lifting RF baffle off shield can with tweezers starting at one end.

  3. Remove FPC RF Shield Cans – Using tweezers, remove the two shield lids shown in the illustration by first peeling on the bottom right corners of the shield. To prevent damage to the FPCs during shield removal, for both shields, peel up the shield along its front edge and bend the shield at 45 degrees. Carefully pull vertically and twist left and right as you pull towards you to remove the shield.

Caution

This twisting procedure is necessary to prevent damage to the FPCs by the sharp edges of the shields. Be sure not to apply leverage on surrounding components, RF shields and/or thermal management components.

Diagram of peeling and twisting RF shield can at 45 degrees to avoid FPC edge damage.

  1. Disconnect FPCs – Once shields are removed and the 4 FPCs are exposed, use a Spudger tool to disconnect the 4 FPCs shown by prying upwards on the corners first and then along the front edge. Be sure not to bend the FPC head excessively otherwise the head will be damaged (refer to illustration for details). Grab each FPC connector and gently pull the ribbon towards the front of the device to untuck ribbon from underneath the chassis ledge. Screenshot that shows spudger prying front corners of display FPC connectors before ribbon removal.

  2. Remove Two Inner Hinge Screws – Using a 6IP screwdriver, remove the inner 2 screws on the left and right hinges (refer to illustration for details).

    Diagram of 6IP driver removing inner hinge screws on left and right sides.

  3. Set AB-cover Display Angle to 90 deg for Safe Removal – Place the display module at an angle of about 90 degrees. Then remove the remaining external screw at the left and right hinges while holding the display with your free hand.

    Diagram of display module held at 90 degrees while external hinge screws are removed.

  4. Remove AB-cover from Device – Lift the display module straight up vertically until detached from the unit.

Installation Procedures – (AB-cover Display Assembly)

Important

The installation process for the AB-cover varies between C-cover types (Metal vs. Fabric). Each C-cover type creates different AB-cover opening experiences. The opening experience is a differentiating characteristic of the Surface Laptop design. Be sure to move to the proper C-cover reassembly section based on C-cover type.

Procedure installation – (Metal C-cover Device)

  1. Initial AB-cover Install – Clean out any residual thread locker surrounding the hinge screw holes or just inside the screw hole before installing replacement AB-cover assembly. Set the new AB-cover in place in the device chassis hinge wells and hold in place while installing 2 new outer screws on each hinge (4 total at this time). Screws should be installed until snug and seated, and then turned another 90 degrees (1/4 turn) or until fully fastened.

  2. Release Hinge Clamp Force – Turn all 4 screws 90 degrees (1/4 turn) counterclockwise to release the clamp force from those screws. This allows for alignment of AB-cover to chassis at a later step.

  3. Connect AB-cover FPCs – Connect all 4 display module FPCs into their respective connectors.

    Diagram of reconnecting four AB-cover FPC ribbons to their main board sockets.

  4. Tuck FPCs – Using a guitar pick opening tool, carefully tuck the loose portion of the FPCs under the enclosure lip as shown. Ensure that the FPC is taut and that there's no remaining slack protruding out from under the lip. Any protrusions could prevent or negatively impact the reinstallation of the C-cover.

    Diagram of guitar pick tucking FPC slack under enclosure lip to remove protrusion.

  5. Touch Calibration Steps – The new AB-cover must have touch calibration performed:

    1. Install rSSD to enable device operation (device won’t power on without rSSD installed). Follow steps for Procedure – Installation (rSSD).

    2. Temporarily connect the C-cover FPC back on to device main board connector and set the C-cover in place on the device chassis. No screws are required at this time as the C-cover will be used temporarily to control the device; see details in Procedure – Installation (C-cover Keyboard Metal type) section.

    3. Connect software tools USB drive with software tools to USB connector on device under repair.

    4. Connect power supply to device to enable power-on.

    5. Power on device – Depress the power button on the C-cover to power on the device.

    6. Run software tool – At the device OS, use Windows Explorer, navigate to USB drive and run: STEP2_DisplayModuleReplacement.cmd. Follow prompts, device will restart. Verify touch by running finger across screen to check that touch is working.

    7. Power off device – Use device OS to power down device.

    8. Remove C-cover.

    9. Remove rSSD.

Important

Calibration Failure – If calibration tool returns an error message that indicates calibration failure, see AB-cover Touch Calibration Retry section for details on how to proceed. This must be carried out at this time and before complete reassembly of device.

  1. FPC RF Shield Installation – Install 2 new shield lids above the 4 AB-cover FPC connectors by orienting them along the outline of the shield fences.

Important

Be sure to install the correct shield type onto the corresponding shield fence. The left- hand shield has 2 rectangular embosses in the shape of connector heads and the right-hand shield has 3 rectangular embosses. Prior to shield installation, visually inspect each shield to ensure that shield fingers aren't bent such that they impeded the installation process. Push the shields vertically downwards onto the fences and snap into place. Ensure the shields are evenly pressed along the entire perimeter of each fence and that the front shield prongs are pressed firmly against the shield fence.

  1. Connect WiFi Antenna – Reconnect the left WiFi antenna cable (see illustration).

  2. RF Baffle Installation – Install 2 new RF baffles on top of the shield by peeling off the adhesive protector sheet and snapping them into place near the back of the shields. Firmly press your finger along the top of the RF Baffle wall to adhere adhesive to shield.

    Diagram of new RF baffles adhered atop shield cans near rear edge alignment.

  3. AB-cover Hinge Alignment – It's necessary to properly align the front edge of the AB-cover to the lower device case to ensure step gap between front edges are proper.

    1. Hinge Alignment – Set Display Module to 90 degrees. Shift innermost screw on each side so that the screws are concentric with the circular feature on the hinge.

    Diagram of concentric alignment of innermost hinge screw with circular hinge feature.

    1. Verify Hinge Alignment – With the screws concentrically aligned verify hinge alignment inserting a plastic 0.40mm feeler gauge in between the display and chassis (shown by blue arrow). Feeler gauge should be able to slide through smoothly. If gauge doesn't fit, realignment might be necessary.

    Diagram of 0.40-mm feeler gauge sliding smoothly between display and chassis to confirm spacing.

    1. Secure hinge – Turn all 6 hinge screws another 90 degrees (1/4 turn) or until fully fastened.

  4. Opening Strength Adjustment (Metal C-cover) – As part of the AB-cover removal process, we'll need to remove the current C-cover steels, which are located at the bottom front edge pockets and install new provided steels.

    1. C-cover Steels Mylar Removal – Take C-cover and remove mylars covering the closure steels using tweezers.

    Diagram of tweezers lifting mylar tape from closure steel on metal C-cover.

    1. C-cover Steels Removal – Using tweezers again, remove the closure steels located in the two regions at the front edge of the C-cover.

    Diagram of tweezers extracting existing closure steel from front edge pocket.

    1. Clean Closure Steel Area – Clean off the closure steel area thoroughly with a cotton swab and IPA. Be sure there's no debris or residue left over.
    2. Install New Closure Steels – Install new closure steels about 2mm from the outside edge of the C-cover as shown in the image using tweezers.
    3. Left Closure Steel Placement – Place single closure steel into left enclosure pocket about 2mm from the outside left edge of C-cover.
    4. Secure Left Closure Steel – Using the back of the tweezers, press continuously and firmly along the surface of the steel for 80 seconds.
    5. Tape Left Closure Steel – Place mylar tape over the steel. Black tape should fully cover steel and overlap onto the C-cover.
    6. Smooth Left Closure Steel Tape – Use Spudger tool to smooth out and flatten the tape to secure the steel.
    7. Right Closure Steel Placement – Place single closure steel into right enclosure pocket about 2mm from the outside right edge of C-cover.
    8. Secure Right Closure Steel – Using the back of the tweezers, press continuously and firmly along the surface of the steel for 80 sec.
    9. Tape Right Closure Steel – Place black tape over the steel. Black tape should fully cover steel and overlap onto the C-cover.
    10. Smooth Right Closure Steel Tape – Use Spudger to smooth out and flatten the tape to secure the steel. Ensure that all metal keyboard covers have the mylar tape on top of the steel before final assembly of the keyboard.

    Diagram of newly installed closure steel positioned ~2 mm from outer C-cover edge before taping.

  5. Fit C-cover – Follow steps 2-4 of the C-cover reassembly instructions. Don't install any Feet screws.

  6. Check AB-cover alignment – Close the device and confirm flushness of feeler gauge to display module cover across the entire front edge.

    1. If flush, move to next step in this section.
    2. If not flush, follow steps for removing AB-hinge screws and steps for 9a through 9c again until flush. Then follow steps for C-cover reassembly.

  7. rSSD Install – Follow steps for Procedure – Installation (rSSD) section.

  8. C-cover Install – Follow steps for Procedure – Installation (C-cover Keyboard metal type).

  9. Run SDT – Power on device. Validate full device functionality by running SDT tool.

    1. If an SDT failure occurs, assess failure to determine if caused by any improper or missed step in the repair process and correct.
    2. Any failure that isn't correctable should result in device exchange.

  10. Install Feet – If SDT tests pass and no further actions are to be performed on the device, follow steps for Procedure – Installation (Non-Skid Feet).

Procedure installation – (Fabric C-cover Device)

  1. Initial AB-cover Install – Clean out any residual thread locker surrounding the hinge screw holes or just inside the screw hole before installing replacement AB-cover assembly. Set the new AB-cover in place in the device chassis hinge wells and hold in place while installing 2 new outer screws on each hinge (4 total at this time). Screws should be installed until snug and seated, and then turned another 90 degrees (1/4 turn) or until fully fastened.

  2. Release Hinge Clamp Force – Turn all 4 screws 90 degrees (1/4 turn) counterclockwise to release the clamp force from those screws. This allows for alignment of AB-cover to chassis at a later step.

  3. Connect AB-cover FPCs – Connect all 4 display module FPCs into their respective connectors.

    Diagram of reconnecting four AB-cover FPC ribbons on fabric C-cover variant.

  4. Tuck FPCs – Using a guitar pick opening tool, carefully tuck the loose portion of the FPCs under the enclosure lip as shown. Ensure that the FPC is taut and that there's no remaining slack protruding out from under the lip. Any protrusions could prevent or negatively impact the reinstallation of the C-cover.

    Diagram of guitar pick tucking AB-cover FPC slack under lip on fabric model.

  5. Touch Calibration Steps – The new AB-cover must have touch calibration performed:

    1. Install rSSD to enable device operation (device won’t power on without rSSD installed). Follow steps for Procedure – Installation (rSSD) section.

    2. Temporarily connect the C-cover FPC back on to device main board connector and set the C-cover in place on the device chassis. No screws are required at this time as the C-cover will be used temporarily to control the device; see details in Procedure – Installation (C-cover Keyboard Fabric type) section.

    3. Connect software tools USB drive with software tools to USB connector on device under repair.

    4. Connect power supply to device to enable power-on.

    5. Power on device – Depress the power button on the C-cover to power on the device.

    6. Run software tool – At the device OS, use Windows Explorer, navigate to USB drive and run: STEP2_DisplayModuleReplacement.cmd. Follow prompts, device will restart. Verify touch by running finger across screen to check that touch is working.

Important

Calibration Failure – If calibration tool returns an error message that indicates calibration failure, see AB-cover Touch Calibration Retry section for details on how to proceed. This must be carried out at this time and before complete reassembly of device.

g. Power off device – Use device OS to power down device.

h. Remove C-cover.

i. Remove rSSD.

  1. FPC RF Shield Installation – Install 2 new shield lids above the 4 AB-cover FPC connectors by orienting them along the outline of the shield fences.

Important

Be sure to install the correct shield type onto the corresponding shield fence. The left- hand shield has 2 rectangular embosses in the shape of connector heads and the right-hand shield has 3 rectangular embosses. Prior to shield installation, visually inspect each shield to ensure that shield fingers aren't bent such that they impede the installation process. Push the shields vertically downwards onto the fences and snap into place. Ensure the shields are evenly pressed along the entire perimeter of each fence and that the front shield prongs are pressed firmly against the shield fence.

  1. Connect WiFi Antenna – Reconnect the left WiFi antenna cable (see illustration).

  2. RF Baffle Installation – Install 2 new RF baffles on top of the shield by peeling off the adhesive protector sheet and snapping them into place near the back of the shields. Firmly press your finger along the top of the RF Baffle wall to adhere adhesive to shield.

    Diagram of RF baffles adhered to shield cans after installation on fabric configuration.

  3. AB-cover Hinge Alignment – It's necessary to properly align the front edge of the AB-cover to the lower device case to ensure step gap between front edges are proper.

    1. Hinge Alignment – Set Display Module to 90 degrees. Shift innermost screw on each side so that the screws are concentric with the circular feature on the hinge.

    Diagram of innermost hinge screw concentric alignment on fabric hinge at 90-degree display angle.

    1. Verify Hinge Alignment – With the screws concentrically aligned verify hinge alignment inserting a plastic 0.40mm feeler gauge in between the display and chassis (shown by blue arrow). Feeler gauge should be able to slide through smoothly. If gauge doesn't fit, realignment might be necessary.

    Diagram of 0.40-mm feeler gauge confirming rear corner hinge clearance on fabric model.

    1. Secure hinge – Turn all 6 hinge screws another 90 degrees (1/4 turn) or until fully fastened.

  4. Fit C-cover – Follow steps 2-4 of the C-cover reassembly instructions. Don't install any Feet screws.

  5. Check AB-cover alignment – Close the device and confirm flushness of feeler gauge to display module cover across the rear corners of each hinge.

    1. If flush, move to next step in this section.
    2. If not flush, follow steps for removing AB-hinge screws and steps for 9a through 9c again until flush. Then follow steps for C-cover reassembly.

  6. rSSD Install – Follow steps for Procedure – Installation (rSSD) section.

  7. C-cover Install – Follow steps for Procedure – Installation (C-cover Keyboard metal type) section.

  8. Run SDT – Power on device. Validate full device functionality by running SDT tool.

    1. If an SDT failure occurs, assess failure to determine if caused by any improper or missed step in the repair process and correct.
    2. Any failure that isn't correctable should result in device exchange.

  9. Install Feet – If SDT tests pass and no further actions are to be performed on the device, follow steps for Procedure – Installation (Non-Skid Feet).

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