MacBook Pro (16-inch PROLED XDR, M5 Pro or M5 Max) Touch ID Board Reassembly
Before You Begin
Warning
Read Battery Safety and follow workspace and battery handling guidelines before you begin.
Tools
ESD-safe tweezers
Ethanol wipes or isopropyl alcohol (IPA) wipes
Kapton tape
Keyboard backlight alignment pins
Nylon probe (black stick)
Pentalobe PL1.1 44 mm half-moon bit (1IPR half-moon bit)
Torque driver (blue, 0.65 kgf cm)
Torx Plus 1IP 44 mm half-moon bit
Touch ID alignment kit
Note: The tools list includes tools needed for removal and reassembly. Refer to a full list of tools required for all repairs.
Important
If you replace this part, it’s recommended to run Repair Assistant in order to finish the repair. Repair Assistant will be available on the device after you’ve completed all reassembly steps.
The Touch ID board is located under the keyboard backlight panel. Replacing the Touch ID board requires removing the existing keyboard backlight and installing a replacement. A replacement backlight keyboard is included with a replacement Touch ID board.
This procedure may require a Touch ID board shim kit, which only comes with a replacement Touch ID board. It’s not a separate orderable part.
Reassembly
Touch ID Board Reassembly
Pick up the computer and fully open the display. Then place the computer on the edge of the table with the display hanging down.
Important: Ensure that the surface under the top case opening for the Touch ID board is flat and even.
Peel the tape off the two display flex cable clips. Then attach the clips to the top case frame to prevent damage to the flex cables.
Route the Touch ID flex cable through the Touch ID diffuser. Then place the assembly into the keyboard as shown.
Ensure that you line up the flex cable with the cutout on the side of the diffuser.
Ensure that the diffuser is oriented so the bottom of the depression in the diffuser is in contact with the Touch ID button.
Caution: Don’t sandwich the flex cable between the Touch ID button and the diffuser.
Place the feature plate on top of the Touch ID button/diffuser assembly.
Important: Inspect the feature plate to ensure that the screw holes in the feature plate and the diffuser are lined up and concentric.
Use the blue torque driver and PL1.1 bit to partially reinstall four outer PL1.1 screws (923-15347).
Important: You’ll fully install these four screws in step 13.
Use the blue torque driver and PL1.1 bit to partially reinstall four inner PL1.1 screws (923-15347) on the Touch ID board.
Important: You’ll fully install these four screws in step 14.
Press the Touch ID flex cable into the top case to adhere it to the enclosure.
Center the Touch ID button in the keyboard. Then set two Touch ID alignment tools against the Touch ID button. Secure the alignment tools as shown with Kapton tape.
Close the display. Then lay the computer display-side down on the table.
- Caution: Ensure that the Touch ID flex cable is routed through the diffuser and isn’t pinched between the feature plate and the top case.
Use the blue torque driver and PL1.1 bit to fully reinstall the four outer PL1.1 screws in the sequence shown.
- Caution: Confirm that the Touch ID flex cable isn’t pinched between the feature plate and the top case.
Use the blue torque driver and PL1.1 bit to fully reinstall the four inner PL1.1 screws on the Touch ID board in the sequence shown.
Pick up the computer and stand it on its side with the display open. Then ensure that the Touch ID button is centered in the top case. If the button is centered, skip to step 14.
If the Touch ID button isn’t centered, remove the alignment tools. Then loosen the eight PL1.1 screws and repeat steps 8 through 12.
Remove the Touch ID alignment tools and Kapton tape.
With the computer still on its side, press the Touch ID button repeatedly. At the same time, tighten the set screw (923-16171) until the button stops clicking. Then loosen the set screw just until the clicking resumes.
Press the top two corners of the button to confirm that they click. If you don’t feel a click, loosen the set screw in small increments until they both click. Then repeat the same procedure with the bottom two corners of the button.
Keyboard Backlight Reassembly
Close the computer and place it on the table with the display side down.
Insert the two keyboard backlight alignment pins in on the back of the keyboard where shown and turn the pins clockwise until they stop turning.
Unclip the display flex cable clips from the top case and tape them out of the way with Kapton tape.
- Caution
Ensure that all other flex cables are taped back.
Move the trackpad flex cable and battery management unit flex cable out of the way when necessary.
Place the keyboard backlight on a clean, flat surface with the Touch ID board in the upper right corner.
- Caution: Note the locations of the 11 adhesive points on the keyboard backlight. Don’t touch these points while handling it.
Peel the first of two bottom liners (1) off the keyboard backlight.
Peel the second bottom liner (2) off the keyboard backlight.
- Caution: Don’t touch any of the adhesive dots under the keyboard backlight while handling it.
Peel the remaining six liner strips off the edges of the keyboard backlight.
- Caution: Don’t touch any of the adhesive under the edges of the keyboard backlight while handling it.
Position the keyboard backlight over the top case so the Touch ID board outline is located in the upper-left corner. Then tilt down the top end of the keyboard backlight. Begin to lower the keyboard backlight onto the alignment pins.
- Caution: Ensure that none of the flex cables are caught under the keyboard backlight as you lower it onto the pins.
Align the top edge of the keyboard backlight with the top edge of the keyboard (1) as shown. Then align the top-right corner and right edge of the keyboard backlight with the right edge of the keyboard (2) as shown.
- Caution: Don’t place the top edge of the keyboard backlight beyond the dashed Iines. Ensure that you don’t trap flex cables and connectors under the keyboard backlight.
Lightly press down on the top two corners (1, 2) of the keyboard backlight to begin to adhere it to the top case as shown.
Important: Ensure that the top and right edges of the keyboard backlight are properly aligned before you press on the corners.
Continue to lower the edge of the keyboard backlight closest to you onto the keyboard until it’s fully seated on the keyboard.
- Caution: Ensure that you tuck the keyboard backlight under the left and right speaker flex cables.
Important: Don’t remove the blue liner from the top of the keyboard backlight.
Hold the black stick with the flat end facing the edge of the keyboard backlight closest to the vent. Use the flat end of the black stick to make firm, short forward and backward strokes to seal the adhesive to the top case. Move the black stick along the length of the top edge as you rub the black stick forward and backward. Perform this process four times along the full length of the keyboard backlight’s top edge.
- Caution
Ensure that you only press the black stick along the top edge and on the black polyester film.
Don’t use too much pressure on the black stick. This can damage the LEDs that are located under the top edge. Maintain firm but gentle pressure on the black stick.
Don’t lean on the logic board or battery while performing this part of the procedure.
Important: This step activates the adhesive. Consistent pressure on the black stick is required for this step to be successful.
Align the flat end of the black stick along the inside of the black polyester perimeter film that extends from the right side of the keyboard backlight. Press the black stick down on the perimeter film. Press the perimeter film against the keyboard backlight as you press down to prevent light leakage. Then drag the black stick to the right to adhere the film to the top case. Continue this process along the perimeter film on the right.
- Caution: Don’t scratch the keyboard backlight with the black stick.
Important: Press the black stick only on the narrow black polyester perimeter film, not on the blue liner.
Use the flat end of the black stick to smooth out the polyester film along the right side of the keyboard backlight.
Repeat steps 13 and 14 along the left edge of the keyboard backlight. Then continue to step 16.
- Caution: Don’t scratch or damage the keyboard backlight polyester film with the black stick.
Use the flat end of the black stick to ensure that the polyester film is tucked under the speaker flex cable in the lower corners (1, 2) of the keyboard backlight.
- Caution: Don’t scratch or damage the keyboard backlight polyester film with the black stick.
Repeat steps 13 and 14 along the bottom edge of the keyboard backlight. Then continue to step 18.
- Caution: Don’t scratch or damage the keyboard backlight polyester film with the black stick.
Important
Drag the black stick toward the battery when adhering the black polyester film on the bottom edge of the keyboard backlight to the top case.
When sealing the keyboard backlight's polyester film strip next to the center rib in the top case, ensure that you press the polyester film against the rib at a 90-degree angle.
Turn the two keyboard backlight alignment pins counterclockwise to remove them.
Press each of the 11 adhesive points for 20 seconds.
Gently remove the eight blue liners from the top of the keyboard backlight.
Peel the adhesive liner off the polyester film Touch ID set screw cover. Then position the cover over the set screw as shown. Press the cover for 30 seconds to adhere it to the keyboard backlight.
Important: Ensure that the cover is concentric to the set screw and parallel to the side of the keyboard backlight.
Peel the adhesive liner off the polyester film screw cover. Then position the polyester film cover over the screw as shown. Press the cover for 30 seconds to adhere it to the keyboard backlight.
Important: If you’re replacing a keyboard backlight for a JIS keyboard, place the polyester film cover in the location (1) as shown.
Peel the liner off the polyester film ESC key cover. Then position the cover over the keyboard backlight and top case as shown. Use a black stick to rub on the cover to activate the adhesive.
Peel the liner off the Touch ID key cover. Then position the cover over the keyboard backlight and top case as shown. Use a black stick to rub on the cover to activate the adhesive.
Reinstall the following parts to complete reassembly:
Important
Depending on the part replaced, Repair Assistant may be available on the device to finish the repair. Learn how to initiate Repair Assistant.