Ab-Cover Display Assembly Replacement Process - Microsoft Surface Laptop 3 Service Manual

AB-cover Display Assembly Replacement Process

WARNING:
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:
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:
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:
connect an external PC monitor to the device's Mini-DP port.
Preliminary Requirements
IMPORTANT:
Required Tools and Components
• Tools
Software Tool – device calibration mode
o
o Software Tool – SDT
Software Tool – AB-cover touch calibration tool
o
o USB hub
USB keyboard (standard PC USB keyboard needed for interaction while running software tools)
o
o USB mouse (standard PC USB mouse)
Standard PC monitor with HDMI or DVI input
o
o Mini-DP port to HDMI/DVI dongle
6IP (Torx plus) driver
o
o ESD-safe tweezers
o Feeler gauge – 0.40mm
o Guitar pick opening tool
o Anti-static wrist strap (1M Ohm resistance)
o Recommended: ESD-safe battery cover (13.5" or 15")
Components:
•
o 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)
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The AB-cover is extremely sensitive to ESD and should be managed accordingly. Be sure
The C-cover keyboard assembly type (fabric or metal) on the device being repaired will
The device must first be set in AB-cover Replacement Mode before broken/defective
If AB-cover on device under repair is non-functional, there is no display or it is unreadable,
Be sure to follow all special (bolded) notes of caution within each process section.
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