HP Omnibook Xt6050 Service Manual

							HP Omnibook XT6050, XT/VT6200 Removal and Replacement 2-19
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 and any secondary battery module.
 2.
 Remove the power button panel (page 2-11).
 3.
 Remove all four retaining screws from the back of the computer (two near the PS/2 port, and two
near the AC adapter jack).
 4.
 On the bottom of the notebook, remove the two screws from the rear corners (nearest the back
edge).
 5.
 Open the display. Remove the screws from the display ground wires, and disconnect the main
cable.
 6.
 Remove the screw from the center hinge cover, and from the left and right hinges.
 7.
 Lift the display off of the notebook. 
						

							2-20 Removal and Replacement HP Omnibook XT6050, XT/VT6200
 
     
  Figure 2-14. Removing the Display
Reassembly Notes
  Important
 
The label on the display cable indicates the display type.
 
• Before installing any screws, make sure the center hinge cover is in place and fits over the tab in
the bottom case.
Screws,
M2.5×6mm (5)
Screw, M2.5×5mm
Screws, M2.5×4 mm (2)
Screw, M2.5×17mm
Screws, M2.5×8mm (2) 
						

							HP Omnibook XT6050, XT/VT6200 Removal and Replacement 2-21
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 and any secondary battery module.
 2.
 Remove these additional assemblies:
 
• Plug-in module (page 2-5).
 
• Hard disk drive (page 2-7).
 
• Power button panel (page 2-9).
 
• Keyboard (page 2-13).
 
• Heatsink (page 2-15).
 
• Display assembly (page 2-19).
 3.
 From the bottom of the computer, remove the screws holding the left and right corner covers, then
remove the covers. (The right corner cover may come off more easily if you slide the plug-in
module latch forward.)
 4.
 Remove all six retaining screws from the bottom case.
 5.
 Remove both retaining screws from just inside the hard disk drive compartment.
 6.
 Remove the single screw inside the battery compartment.
 7.
 From the top of the computer, release the touch pad flex cable from its motherboard connector.
(Certain models have a forked cable and two connectors.)
  Caution: Wireless Models
 
Be careful not to pull on the cable from the rear antenna PCA.
 8.
 
Wireless models only: Remove the retaining screw from the rear antenna PCA, and detach the
PCA by sliding it slightly to the left. (The PCA’s cable is still attached to mini-PCI card #1.
Unplug the cable only if you are replacing the PCA or removing the bottom case.)
 9.
 Remove the three top case retaining screws: one to the right of the left speaker, and two to the left
of the right speaker.
 10.
 Raise the back of the top case, then lift it off the computer. 
						

							2-22 Removal and Replacement HP Omnibook XT6050, XT/VT6200
 
     
  Figure 2-15. Removing the Top Case
Reassembly Notes
 
• To reinstall the sound/IR panel, insert the tabs on the ends of the panel into the slots in the bottom
case.
 
• When reinstalling the right corner cover, first insert the tab at the back end of the cover into the
case, then slide the plug-in module latch forward and snap the cover over the latch and into place.
 
• 
Wireless models only: If you are replacing the rear antenna PCA, place the PCA in its position
near the left hinge, replace the screw, then thread the cable through to the bottom of the computer
and reconnect the cable to the mini-PCI card.
Screws,
M2.5x4mm (2)
PCMCIA doors
Screws,
M2.5x8mm (4)
Screws, M2.5x4mm (2)
Cover,
right cornerSound/IR
panel Left corner
cover
Screw,
M2.5x2mmW ireless antennaTouch pad
flex cable
Screws,
M2.5x6mm (3)
Screw,
M2.5x17mm
Screw,
M2.5x6mm
Screw,
M2.5x4mm
Docking doors
(OB 6050 models only) 
						

							HP Omnibook XT6050, XT/VT6200 Removal and Replacement 2-23
Removing the Motherboard or Bottom Case
(HP Authorized Service Providers Only)
Required Equipment
 
• Small Phillips screwdriver.
 
• Small flat-blade screwdriver.
Removal Procedure
Note: Before Replacing the Motherboard
If possible, record the computer’s electronic serial number and service ID before you replace the
motherboard. You will then store this information in the EEPROM on the new motherboard using the
Service Utility floppy disk.
1.  Download the service package for the Omnibook XT6050 (technology code EF) or Omnibook
XT/VT6200 (technology code EG) from the Partnership web site (see page vi), and create a
Service Utilities floppy disk as described in the package’s Readme file.
2.  Connect a floppy disk drive module: insert the module into the notebook, or connect it to the
notebook’s parallel port using an F2008 external floppy drive cable.
3.  Connect an external monitor to the computer, so you can verify the boot process.
4.  Plug in an AC adapter.
5.  Insert the Service Utilities floppy disk into the floppy drive.
6.  Turn on the notebook. W hen the HP logo appears (on either the built-in display or the external
monitor), press Esc to display the boot menu, then choose Removable Device and boot from the
floppy disk.
7.  Select the Serial Number option from the boot menu.
8.  W hen prompted, type A for the automatic update option. This stores the current system data from
the old motherboard on the floppy disk.
 1.
 Unplug the AC adapter, if present, and remove the battery and any secondary battery module.
 2.
 Remove these additional assemblies:
 
• Plug-in module (page 2-5).
 
• Hard disk drive (page 2-7).
 
• Power button panel (page 2-11).
 
• Keyboard (page 2-13).
 
• Heatsink (page 2-15).
 
• Display assembly (page 2-19).
 
• Top case (page 2-21).
 3.
 Remove the five screws that attach the motherboard to the bottom case.
 4.
 From the back of the unit, remove the screw from the LAN/modem PCI panel, and lift the panel
out of the bottom case. 
						

							2-24 Removal and Replacement HP Omnibook XT6050, XT/VT6200
  Caution: Wireless Models
 
Be careful when removing and attaching antenna cables. Damage to cables or connectors can
degrade performance.
 5.
 
Wireless models only: Disconnect the front antenna PCA flex cable from the motherboard.
 6.
 
Wireless models only: Remove the mini-PCI cover and unplug the two antenna cables from mini-
PCI card #1.
 7.
 Lift the motherboard out of the bottom case.
 
    
  Figure 2-16. Removing the Motherboard
 8.
 Depending on what you are replacing, go to “Replacing the Motherboard” on page 2-26, or
“Replacing the Bottom Case” on page 2-28.
Screws, M2x15mm (2)
Screw, M2.5x4mm
Screw, M2.5x3mm
Screw, M2x3mm
Screw, M2.5x4mm
Front antenna PCA
flex cable 
						

							HP Omnibook XT6050, XT/VT6200 Removal and Replacement 2-25
Reassembly Notes
 
• Reinstall the sound/IR panel before reinstalling the motherboard.
 
• If you need to install or replace the docking doors or PCMCIA doors, see the figures below.
Wireless Models Only
 
• Before installing the motherboard, make sure the round coaxial cable from the front antenna PCA
is held in place by the clips in the bottom case.
 
• Reconnect the front antenna PCA flex cable before reinstalling the top case. Make sure it lies in its
groove in the bottom case (battery compartment).
 
• To reinstall the rear antenna PCA, place the PCA in its position near the left hinge, then replace the
screw that attaches the PCA to the top case. Thread the PCA cable through the hole in the
motherboard (at the lower left corner of the left speaker) to the bottom of the computer, and
reconnect the cable to mini-PCI card #1.
 
  Figure 2-17. Installing the Docking Doors
 
 
Figure 2-18. Installing the Lower PCMCIA Door 
						

							2-26 Removal and Replacement HP Omnibook XT6050, XT/VT6200
Replacing the Motherboard
Disassembly Procedure
 1.
 If a mini-PCI panel is attached, disconnect the LAN/modem cables from the mini-PCI card or
motherboard and remove the mini-PCI panel.
 2.
 If mini-PCI card #1 is present, remove it: release the latches at the sides of the card, so that its free
edge pops up, then carefully pull the card out of its connector.
 3.
 If mini-PCI card #2 is present, remove it: release the latches at the sides of the card, so that its free
edge pops up, then carefully pull the card out of its connector.
 4.
 Disconnect the cable connecting the display interface PCA to the speaker assembly.
 5.
 Carefully lift the display interface PCA off of its connector.
 6.
 Remove the speaker assembly from the unit.
 7.
 Carefully lift the volume PCA off of its connector.
 8.
 Turn the lock screw one-half turn counterclockwise to release the CPU module, and remove the
CPU module from the motherboard.
 9.
 From underneath the motherboard, remove the two retaining screws from the PC card socket and
lift the socket off the connector.
 
  Figure 2-19. Replacing Motherboard Components
Volume PCA
CPU module
lock screw Display interface PCA
Screws, M2x4mm (2)Speaker assembly
Mini-PCA panel
(LAN/modem)
Front antenna
PCA
Rear antenna PCA
Screws,
M2x4mm (2) 
						

							HP Omnibook XT6050, XT/VT6200 Removal and Replacement 2-27
Reassembly Procedure
  Note: Reprogramming the BIOS IC
 
A new BIOS IC contains only enough basic programming to enable the notebook to boot. After
installing a new motherboard, you must reprogram the BIOS IC, preferably with the latest BIOS—
see page 2-29.
 1.
 Transfer the following components from the old motherboard onto the new motherboard:
 
• SDRAM module
 
• speaker assembly
 
• display interface PCA
 
• volume PCA
 
• CPU module
 
• PCMCIA socket
 
• mini-PCI card #1 (if present)
 
• mini-PCI card #2 (if present)
 2.
 Follow the reassembly notes in the section entitled “Removing the Motherboard or Bottom Case”
on page 2-25.
Note: After Replacing the Motherboard
After replacing the motherboard, you must use the Service Utility floppy disk to store the system data
and display information in the EEPROM on the new motherboard.
1.  Connect a floppy disk drive module: insert the module into the notebook, or connect it to the
computer using an F2008 external floppy drive cable.
2.  Plug in an AC adapter.
3.  Insert the Service Utilities floppy disk in the floppy drive.
4.  Turn on the computer.
5.  If you hear 5 beeps, press F1 to update the display data stored on the motherboard. Let the
computer reboot and go to the next step.
6.  Select the Serial Number option from the boot menu.
7.  If you successfully stored system data on the floppy disk before removing the old motherboard,
type A for the automatic update. This restores the old system data on the new motherboard.
If you did not store system data, type M for the manual update option. Enter the serial number from the
bottom of the unit—you may have to contact an HP support center to do this. 
						

							2-28 Removal and Replacement HP Omnibook XT6050, XT/VT6200
Replacing the Bottom Case
Installation Procedure
 1.
 Transfer the SDRAM cover and sound/IR panel from the old bottom case to the new bottom case.
 2.
 Install a new Microsoft Product ID label.
 3.
 Transfer the old serial number label and install a new overlay, or create a new serial number label
using the steps below.
 4.
 Follow the “Reassembly Notes” on page 2-24.
Installing a New Serial Number Label
Download the latest version of the serial number label template (Microsoft Word format) from the
Partnership web site (see page vi) under Support/Service in Technical Support Information. The latest
version includes fields for warranty period and manufacturing location. Store the template with other
Word templates on a PC connected to a laser printer.
 1.
 Open a new document based on the serial label template.
 2.
 Enter the information from the old serial label, and print the new label on plain white paper. The
new label does not have barcodes.
 3.
 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.
 4.
 While holding the paper label in place, attach a serial label overlay into the outer recess. The
overlay covers and protects the serial label.
 5.
 Make sure all regulatory labels that were on the old bottom case are also on the new bottom case.
You can do this by keeping the old covers, if necessary.
HP Serial Number (S)TW711A1234 1YR
(1P) F2072 W   EA   MFG# TW711A1234
Made in Taiwan
Figure 2-20. Example of Serial Number Label