HP Book 900 manual Removing the Top Case

Removing the Top Case

(HP Authorized Service Providers Only)

Required Equipment

∙Small Phillips screwdriver.

Removal Procedure

1.Unplug the ac adapter, if present, and remove the battery.

2.Remove these additional assemblies:

∙Hard disk drive (page 2-6)

∙Keyboard (page 2-12).

∙Display assembly (page 2-16).

3.Remove the eight screws (OmniBook 900†) or six screws and two springs (OmniBook 900B) from the heatsink and lift off the heatsink.

Caution

Do not spin the fan blade with your finger. Pressure on the fan blade can damage the bearings.

4.Unplug the microphone cable from the motherboard near the back.

5.Unplug the touch pad flex cable from the motherboard near the front.

6.On the bottom of the unit, remove the five screws (12-inch display) or six screws (13-inch display) from the front half of the case.

7.On the top of the unit, remove the three screws along the back of the top case.

8.Remove the six screws (12-inch display) or five screws (13-inch display) holding the top case to the motherboard and bottom case.

9.Near the docking connector, press down on the inner edge of the top case and lift the back edge until two snaps release in that area.

10.Near the right hinge area, push the top case toward the rear and lift the back edge until the top case releases from the right hinge support.

11.Hold the front of the bottom case with your thumbs. Lift the back of the top case about 5 mm

(2 inches), then pull it forward with your fingers. Pull and work the top case until the middle snap releases.

The left hinge support comes off with the top case. The right hinge support stays in the bottom case.

2-18 Removal and Replacement HP OmniBook 900