HP Omnibook Xe2 Service Manual

							HP OmniBook XE2 Removal and Replacement 2-11
Removing the Display Assembly
(HP Authorized Service Providers Only)
Required Equipment
 · Small Phillips screwdriver.
 · Plastic knife or small flat-blade screwdriver.
Removal Procedure
 1. Unplug the AC adapter, if present, and remove the battery.
 2. Open the display completely (180 degrees).
 3. Use a plastic knife or small flat-blade screwdriver to gently pry up the right side of the keyboard
cover.
 4. Remove the cover by pulling it to your right.
 5. Use a Phillips screwdriver to remove the four screws from the hinge covers.
 6. Remove the hinge covers with your fingers. Do not use a tool.
 7. Unplug the cable by grasping both ends of the connector and pulling toward you.
 8. Use a Phillips screwdriver to remove the four screws from the hinges.
 
 Figure 2-7. Removing the Display Assembly
Reassembly Notes
 · You may need to use a flat-blade screwdriver to reconnect the cable.
“Step 5” screws (4):
 M2.5×4mm
“Step 8” screws (4):
 M2.5×5mm 
						

							2-12 Removal and Replacement HP OmniBook XE2
Removing the LCD Module
(HP Authorized Service Providers Only)
Required Equipment
 · Small Phillips screwdriver.
 · Pointed knife or probe.
Removal Procedure
 1. Unplug the AC adapter, if present, and remove the battery.
 2. Remove the display assembly (page 2-11).
 3. On the display bezel, using a pointed knife or probe, remove the eight upper and lower screw
covers.
 4. Using a Phillips screwdriver, remove the eight screws.
 5. Using your fingers at each side of the bottom of the display bezel, slide the bezel toward you until
it unsnaps.
 6. Lift up the bottom of the bezel and lift it off.
 7. Using a Phillips screwdriver, remove the four screws holding the LCD brackets and hinges near
the bottom corners of the display case.
 8. Remove the hinges.
 9. Using a Phillips screwdriver, remove the four screws holding the LCD brackets.
 10. Lift out the LCD module, including the right and left LCD brackets and the inverter PCA. (In
some models, the inverter PCA is at the bottom of the LCD module; in others, to the right side.)
 11. Using a Phillips screwdriver, remove the four screws holding the brackets to the LCD module.
 12. Unplug the two cables from the inverter PCA.
 13. Remove the four side screws holding the brackets to the LCD module. 
						

							HP OmniBook XE2 Removal and Replacement 2-13
 
 Figure 2-8. Removing the LCD Module
LCD module
Inverter PCA
Display case
Display bezelScrew covers
Right LCD bracket Left LCD bracketNote: In some models,
the inverter PCA is at
the bottom of the LCD
module.
Hinges 
						

							2-14 Removal and Replacement HP OmniBook XE2
Reassembly Notes
 · To resposition the inverter PCA, insert the plastic positioning knobs in the holes at each end of
the inverter.
 · Wrap the cable and wires around screw holes and free of the edge of the display case.
 · Slide the display bezel toward the top until it snaps in place.
 · Start all of the bezel screws before tightening any of them.
 · Note that the top screw covers differ from the bottom screw covers, and that the two screw covers
at the upper left and upper right are somewhat thicker than the others. 
						

							HP OmniBook XE2 Removal and Replacement 2-15
Removing the Top Case
(HP Authorized Service Providers Only)
Required Equipment
 · Small Phillips screwdriver.
 · Pointed knife or probe.
 · Small flat-blade 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).
 · Fan (page 2-7).
 · Keyboard (page 2-9).
 · Display assembly (page 2-11).
 3. Using the Phillips screwdriver, remove four screws on the top case: two on either side of the fan
location, one toward the top right, and one (recessed) next to the touch pad
 Figure 2-9. Removing the Top Case
Cables
Cable connectors 
						

							2-16 Removal and Replacement HP OmniBook XE2
 4. Turn the case bottom side up and, with the battery compartment toward you, using the Phillips
screwdriver, remove thirteen screws from the bottom case:
 · four on the right side
 · two in the battery compartment
 · two to the left of the battery compartment
 · one from the RAM module cover (also remove the RAM module cover itself)
 · one in the hard disk drive compartment
 · one under the upper left foot (first remove the foot with a pointed knife or probe)
 · two recessed hinge screws
 
 Figure 2-10. Detaching the Bottom Case
 5. Turn the unit top side up.
 6. Using a small flat-blade screwdriver, slide the two cable connectors up slightly and detach the
two cables from the motherboard.
 7.  Lift off the top case.
Reassembly Notes
 · Insert the thin (touch pad) cable first, since it has more flexibility than the wide (CD control PCA)
cable.
 · With the cable connectors opened slightly, insert the cables back in the cable connectors and push
the connectors shut.
Upper left footRecessed hinge screws 
						

							HP OmniBook XE2 Removal and Replacement 2-17
Removing the CPU and Motherboard
(HP Authorized Service Providers Only)
Required Equipment
 · Small Phillips screwdriver.
 · Small flat-blade screwdriver.
 · 5-mm (3/16 inch) hex driver.
 · uPGA-1 CPU removal tool (Technology Code DD)
Removal Procedure
 1. Unplug the AC adapter, if present, and remove the battery.
 2. Remove these additional assemblies:
 · Hard disk drive (page 2-6).
 · Fan (page 2-7).
 · Keyboard (page 2-9).
 · Display assembly (page 2-11).
 · Top case (page 2-15).
 3. Remove the heatsink: using the Phillips screwdriver,
Technology Code (DB):
remove the six screws on the heatsink (including the two recessed screws marked with arrows)
and lift off the heatsink.
Technology Code (DD):
remove the eight screws on the heatsink (inlcuding the four recessed screws)
 4. Remove the floppy disk drive (on the left):
 · Remove one screw.
 · Using a small flat-blade screwdriver, slide the cable connector to the right slightly and detach
the cable from the motherboard.
 · Remove the drive.
 5. Remove the CD-ROM drive (on the right):
 · Remove one screw.
 · Slide the drive to the right to detach the connector.
 · Remove the drive.
 6. Remove the CPU module / CPU
Technology Code (DB):
Using the Phillips screwdriver, remove the three screws and lift the module up.
Technology Code (DD):
Using a uPGA-1 CPU removal tool, remove the CPU from the socket.
 7. Remove the LED PCA (on the left):
Technology Code (DB): 
						

							2-18 Removal and Replacement HP OmniBook XE2
Using the Phillips screwdriver, remove the three screws (two long screws on top and one short
screw on the front left).
 Technology Code (DD):
Using a Phillips screwdriver, remove the four screws (two long screws on top, one short screw on
the top right, and one short screw on the front left).
 · Tilt the front of the LED PCA up to detach the two connectors on the bottom.
 · Lift the PCA out.
  Figure 2-11. Removing the CPU and Motherboard
  Note: Omnibook XE2-DB shown.  Some details differ from Omnibook XE2-DD.
 8. Remove the modem PCA (on the right):
 · Using the Phillips screwdriver, remove the two screws.
Heatsink
Modem PCA LED PCA
Floppy disk driveCPU module
MotherboardCD-ROM drive
Bottom case 
						

							HP OmniBook XE2 Removal and Replacement 2-19
 · Tilt the left of the modem PCA up to detach the connector on the bottom.
 · Lift the PCA out.
 9. Remove the motherboard:
 · Using the Phillips screwdriver, remove the two brackets; the left bracket has two screws, and
the right has three.
 · Using the Phillips screwdriver, remove the two screws in front (on either side of the battery
connector), the one screw in front of the modem PCA, and the one screw on the right side.
 · Using the 5-mm hex driver, remove the standoff on the left side of the VGA connector.
 · Lift the motherboard at the rear and slide it out and upward from the bottom case.
Reassembly Notes
  Note: Installing a New Motherboard
 ·  If any RAM boards are present, transfer them from the old motherboard to the new one:
 · Store the serial number electronically in the new motherboard—see the steps below.
 · When reinserting the motherboard, slip the battery connector under the front edge of the bottom
case and drop in place.
 · When reinstalling the LED PCA, tilt the PCA toward the back to slip the audio jacks into their
openings, and be sure that the connectors line up on the bottom.
 · When reinstalling the CPU module, press only on the two circles near the front edge.
 · When reinstalling the floppy disk drive, slip the cable into the cable connector and slide the
connector closed.
 · When reinstalling the heatsink, be sure that the insulating material is intact.
 
Note: Installing a New Bottom Case
 ·  Install a new serial number label and overlay—see the steps below.
Storing the Serial Number Electronically
 1. Exit Windows and boot to a DOS prompt.
  For Windows 95 or Windows 98, press F8 during reboot and select Command Prompt Only.
  For Windows NT, boot from a DOS boot floppy disk.
 2. Run ESN.EXE from one of these sources:
  On a factory software installation, change to the \Omnibook\Drivers\Hputils directory and
type 
esn at the prompt.
  Otherwise, copy \Omnibook\Drivers\Hputils\Esn.exe from the OmniBook XE2 Recovery
CD, then run it on the OmniBook.
 3. Store the serial number:
  If you are prompted for the serial number, type the serial number shown on the bottom of the
case.
  If a serial number has already been stored, you must call an HP support center to change it. 
						

							2-20 Removal and Replacement HP OmniBook XE2
Installing a New Serial Number Label
If you do not have a master file that creates serial number labels, get a copy from the Reseller website
(see page vi) under Product Support Information in the Service and Support Library.
 1. Using any PC connected to a laser printer, open the master serial label file, enter the serial number
and product number from the old serial label, and print the new label on plain white paper. The
new label does not have barcodes.
 2. Carefully cut out the new serial label just inside the border and place it into the inner recess in the
bottom case. The bottom of the label goes toward the front of the case.
 3. While holding the paper label in place, attach a serial label overlay (HP Part #7121-7525) into the
outer recess. It covers and protects the serial label.