5. With the display open, rest the computer on one side. Remove the three screws.
6. Turn over the computer and remove the three screws on the other side.
7. Open the computer slightly and rest it with the back facing up. Remove the two top screws along the back.
Note: Do not remove the bottom screws.
11. Important: There is an hidden clip that secures the front of the top case. This clip must be released before the top case can be removed. The clip can be seen behind the optical drive felt, on the left side. Also, there are small slits in the top felt. The clip is behind the first slit from the left.
Use a black stick along the seam of the top and bottom case to add slight upward pressure so that the top case will pop up when the clip is released. Then insert a dental pick behind the clip and pull out slightly to release the clip and the top case.
12. With the top case released from the bottom case and lifted slightly so that it does not touch the bottom case, lift the front of the top case, pivoting along the back, to rest the top case against the display. Do not strain the cables connected to the logic board.
Important: Adjust the display so that there is no strain on the top case cables and so the top case will not fall forward.
Important: The keyboard flex cable is a Zero insertion force (ZIF) connector. The locking bar on the connector is extremely fragile and is not intended to separate from the connector. When releasing the bar, use extreme care and a restrained light pressure to move the bar only slightly.
Warning: If the locking bar breaks, you will need to replace the logic board.
Make sure the locking bar is released, then slide the end of the flex cable all the way into the connector, above the locking bar. Hold the cable in place, then slide the locking bar into the connector on both sides to secure.
Important: Verify that the cable is straight. Use the markings on the cable as guides.
Warning: If the flex cable is inserted crooked, some signals may not be connected or signals may short together.
Note: If a cable is not securing properly, verify that it is inserted on the correct side of the locking bar.
15. Lift off the top case.
3. Verify that the LVDS cable is secured with Kapton tape and lays flat.
4. On the top case, check cable connections and routing.
Note: The top case below has the wires and connector for the fiber optics for the optional backlit keyboard (right side). This will not be present on some configurations.
5. Check that the perimeter metal tabs are not bent.
Note: The metal quickly fatigues and can break off easily. Be extremely careful to gently straighten tabs, if needed.
6. Lay the top case against the open display, as shown.
Note: Some side screws have a flexible screw boss. If they block a tab on the top case from seating, use the pointed end of a black stick through the screw hole to push on the boss slightly.
Important: The tabs are fragile. Do not apply too much pressure or bend them.
Important: The top case should lay flat along the sides and top, if not, make sure that cables and components are not interfering.
Important: Screw order is vital for the proper attachment of the top case. 10. Reinstall the side screws in the order shown, below.
Replacement Note: Do NOT insert side screws into the DVI port screw holes. The screws can jam in the holes, requiring removing the logic board to remove.
If the computer has the optional keyboard backlight feature, operate the computer in a darkened room to check for keyboard backlight function.
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