Installation Procedures - (Ab-Cover Display Assembly); Procedure Installation - (Metal C-Cover Device) - Microsoft Surface Laptop 3 Service Manual

Installation Procedures – (AB-cover Display Assembly)
IMPORTANT:
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 just 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 will allow 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.
4. Tuck FPCs – Using a guitar pick opening tool, carefully tuck the loose portion of the FPCs under the
enclosure lip as shown below. Ensure that the FPC is taut and that there is no remaining slack protruding out
from under the lip. Any protrusions could prevent or negatively impact the re-installation of the C-cover.
5. Touch Calibration Steps – The new AB-cover must have touch calibration performed:
Install rSSD to enable device operation (device won't power on without rSSD installed). Follow steps for
a.
Procedure – Installation (rSSD) section
b. 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
27).
c. Connect software tools USB drive with software tools to USB connector on device under repair.
d. Connect power supply to device to enable power on.
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The installation process for the AB-cover varies between C-cover types (Metal vs.
(page 37).
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