HP Omnibook Xe3 Service Manual

							HP OmniBook XE3 Removal and Replacement 2-23
Removing the Hinge Saddle Set
(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:
 · Keyboard cover (page 2-9).
 · Keyboard (page 2-11).
 · Display assembly (page 2-17).
 · Top case (page 2-19).
 3. Remove the two retaining screws from the bottom case.
 
 Figure 2-17. Removing the Hinge Saddle Retaining Screws
Screws,
M2.5x8 mm 
						

							2-24 Removal and Replacement HP OmniBook XE3
 4. Remove the retaining screws from the back of the notebook, just below the display hinges.
 5. Remove both retaining screws from the hinge saddle set.
 6. Lift the hinge saddle set out of the notebook. You may need to free the hinge saddle from the clip
in the bottom case near the LAN/modem ports to remove it.
 
 Figure 2-18. Removing the Hinge Saddle
Reassembly Notes
 · Make sure the posts on the underside of the hinge saddle line up with the hinge support openings in
the bottom case, and that the holes in the front ends of the saddle fit over the alignment posts in the
bottom case.
Screws,
M2.5x8 mm
Screws,
M2.5x8 mm 
						

							HP OmniBook XE3 Removal and Replacement 2-25
Removing the Video PCA
(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:
 · Keyboard cover (page 2-9).
 · Keyboard (page 2-11).
 · Display assembly (page 2-17).
 · Top case (page 2-19).
 · Hinge saddle set (page 2-23).
 3. Note and record the settings of the PCA’s DIP switches. 
						

							2-26 Removal and Replacement HP OmniBook XE3
 4. Remove all three retaining screws from the PCA, and carefully lift it off of the connectors
underneath it.
 
 Figure 2-19. Removing the Video PCA
Reassembly Notes
 · Set the DIP switches on the new PCA to match the settings from the PCA you are replacing and
the notebook’s display type. See “Installing a New Display Assembly” on page 2-19.
Screws,
M2.5x4 mm 
						

							HP OmniBook XE3 Removal and Replacement 2-27
Removing the Heatsink Assembly (with Fan)
(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:
 · Keyboard cover (page 2-9).
 · Keyboard (page 2-11).
 · Display assembly (page 2-17).
 · Top case (page 2-19).
 · Hinge saddle set (page 2-22).
 3. Disconnect the fan cable from the motherboard.
 4. Remove all four retaining screws (their springs are attached to them).
 5. Lift the heatsink out of the notebook. 
						

							2-28 Removal and Replacement HP OmniBook XE3
 
 Figure 2-20. Removing the Heatsink Assembly
Reassembly Notes
 · Make sure the fan cable is not pinned under the assembly.
 · Make sure the thermal pad on the heatsink is not damaged, and replace if necessary.
Heatsink retaining
screws (with springs)
(4) 
						

							HP OmniBook XE3 Removal and Replacement 2-29
Removing the CPU Module
(HP Authorized Service Providers Only)
See Table 4-1 on page 4-3 for a listing of replacement hard disk drives and part numbers.
Required Equipment
 · Small Phillips screwdriver.
 · Small flat-blade screwdriver.
Removal Procedure
 
Caution
 
Be careful not to touch the upper surface of the CPU module. Handle it only by its edges, or you
could damage it.
 1. Unplug the AC adapter, if present, and remove the battery.
 2. Remove these additional assemblies:
 · Keyboard cover (page 2-9).
 · Keyboard (page 2-11).
 · Display assembly (page 2-17).
 · Top case (page 2-19).
 · Hinge saddle set (page 2-22).
 · Heatsink assembly (page 2-27).
 3. To release the CPU module from the motherboard, carefully insert the tip of the flat-blade
screwdriver in the CPU module lock mechanism, and turn the screwdriver a few degrees
counterclockwise until the mechanism clicks into its OPEN position. (The CPU socket moves
slightly to the left when this happens.)
 4.  Grasp the CPU module by its edges, and carefully lift it straight up and off of its socket. 
						

							2-30 Removal and Replacement HP OmniBook XE3
 
Figure 2-21. Removing the CPU Module
Reassembly Notes
 · Make sure the module is fully seated on its socket, and that none of its pins are bent or otherwise
damaged.
 · Make sure the yellow triangle marked on the corner of the CPU module lines up with the
corresponding yellow triangle on the corner of the socket.
 · Carefully insert the tip of the flat-blade screwdriver in the CPU module lock mechanism, and turn
the screwdriver a few degrees clockwise until the mechanism clicks into its LOCK position. (The
CPU socket moves slightly to the right when this happens.)
CPU module
CPU module
lock mechanism 
						

							HP OmniBook XE3 Removal and Replacement 2-31
Removing the Floppy Disk Drive
(HP Authorized Service Providers Only)
Required Equipment
 · Small Phillips screwdriver.
Removal Procedure
 1. Unplug the AC adapter, if present, and remove the battery.
 · Keyboard cover (page 2-9).
 · Keyboard (page 2-11).
 · Display assembly (page 2-17).
 · Top case (page 2-19).
 · Hinge saddle set (page 2-22).
 2. Release the drive’s ribbon cable from its connector on the motherboard.
 3. Remove the two retaining screws.
 4. Lift the floppy drive out of the notebook. 
						

							2-32 Removal and Replacement HP OmniBook XE3
 
 Figure 2-22. Removing the Floppy Disk Drive
Reassembly Notes
 · Make sure the headphone PCA cable lies under the FDD bracket.
Screws,
M2.5x4 mm