38 M1179886
AB-cover Display Assembly Replacement Process
WARNING: The AB-cover is extremely 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 rst 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 non-functional, there is no display or it is 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
o Software Tool – device calibration mode
o Software Tool – SDT
o Software Tool – AB-cover touch calibration tool
o USB hub
o USB keyboard (standard PC USB keyboard needed for interaction while running software tools)
o USB mouse (standard PC USB mouse)
o Standard PC monitor with HDMI or DVI input
o Mini-DP port to HDMI/DVI dongle
o 6IP (Torx plus) driver
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 bafes (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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