HP Omnibook Xe4500 Service Manual

							HP Omnibook XE4100/XE4500 Removal and Replacement 2-17
Removing the Display Assembly
(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 the keyboard cover (page 2-10).
 3. Remove the two retaining screws from the rear of the notebook.
 4. Remove the screws from the left and right antenna PCAs. Relocate the antenna PCAs away from
the display assembly hinges.
 5. Disconnect the display assembly cable from the motherboard.
 6. Remove the six retaining screws that secure the display assembly to the top case. Note that there is
a grounding strap at the left hinge.
 7. Lift the display assembly off of the notebook. 
						

							2-18 Removal and Replacement HP Omnibook XE4100/XE4500
 
  Figure 2-12. Removing the Display Assembly
Screws, silver
M2x4mm (2)
Screws,
M2.5×6mm (8) 
						

							HP Omnibook XE4100/XE4500 Removal and Replacement 2-19
Reassembly Notes
  Important
 
After replacing the display assembly or motherboard, you must use the Service Utilities floppy disk
to reprogram the EEPROM on the motherboard for the new display.
1.  Download the Omnibook XE4000 Series service package from the Partnership web site (see
page vii), and create a Service Utilities floppy disk as described in the package’s Readme file.
2.  Plug in an AC adapter.
3.  Insert the Service Utilities floppy disk in the floppy drive. If the unit has no internal floppy drive,
connect a USB floppy drive.
4.  Turn on the notebook.
5.  W hen you see the HP logo, press ESC to display the boot menu, then boot from the floppy
drive.
6.  Select the option to update the display/LCD identification stored on the motherboard.
 • Make sure you connect the grounding strap to the left display assembly hinge.
 • When connecting the left and right antenna PCAs, make sure they are parallel with the display
assembly hinges. 
						

							2-20 Removal and Replacement HP Omnibook XE4100/XE4500
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 cover (page 2-10).
 • Speaker assembly (page 2-12).
 • Switchboard PCA (page 2-13).
 • Keyboard (page 2-13).
 • CD/DVD drive (page 2-16).
 • Display assembly (page 2-17).
 3. Remove the two screws from the rear of the bottom case.
 4. Remove the screws from the middle and near the back of the top case.
 5. Remove the rubber screw plugs and screws from the bottom case.
 6. Lift the top case off of the notebook and then disconnect the touch pad cable from the
motherboard. 
						

							HP Omnibook XE4100/XE4500 Removal and Replacement 2-21
 
  Figure 2-13. Removing the Top Case
Screw, M2.5×4mm
Screw,
M2.5×6mm (15)
Screw,
M2.5×7mm (2) Screw, M2.5×4mm 
						

							2-22 Removal and Replacement HP Omnibook XE4100/XE4500
Removing the Floppy Drive
(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 cover (page 2-10).
 • Switchboard PCA (page 2-13).
 • Keyboard (page 2-13).
 • Display assembly (page 2-17).
 • Top case (page 2-20).
 3. Remove the screws (right side) that secure the hard disk drive guide to the motherboard. Note that
the screws (left side) are missing. These screws were removed during the top case removal
procedure.
 4. Disconnect the motherboard cable.
 5. Remove the screws that secure the floppy drive to the motherboard.
 6. Remove the floppy drive. 
						

							HP Omnibook XE4100/XE4500 Removal and Replacement 2-23
 
  Figure 2-14. Removing the Floppy Drive
Screw,
M2.5×4mm (2)
Screw,
M2.5×4mm (2) 
						

							2-24 Removal and Replacement HP Omnibook XE4100/XE4500
Reassembly Notes
  Caution
 
Do not excessively bend or fold the floppy drive cable. Excessive flexing can damage the floppy
drive cable connections.
 • Connect the floppy drive cable to the motherboard prior to replacing the floppy drive and hard disk
drive guide.
 • When replacing the hard disk drive guide, do not secure the left side to the motherboard. The left
side of the guide gets secured during the top case replacement procedure. 
						

							HP Omnibook XE4100/XE4500 Removal and Replacement 2-25
Removing the Infrared (I/R) 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:
 • Hard disk drive (page 2-6).
 • Keyboard cover (page 2-10).
 • Switchboard PCA (page 2-13).
 • Keyboard (page 2-13).
 • Display assembly (page 2-17).
 • Top case (page 2-20).
 3. Disconnect the cable from the motherboard.
 4. Remove the screws that secure the I/R PCA to the bottom case.
 5. Remove the I/R PCA. 
						

							2-26 Removal and Replacement HP Omnibook XE4100/XE4500
Reassembly Note
  Caution
 
Use care when handling the I/R PCA cable. Damaging the cable can degrade notebook
performance.
 • Make sure you route the I/R PCA cable between the left screw hole and the bottom case.
 
  Figure 2-15. Removing the I/R PCA
Screw,
M2.5×4mm (2)