HP Omnibook Xt6050 Service Manual

HP Omnibook XT6050, XT/VT6200 Removal and Replacement 2-29
Repairing the BIOS IC
(HP Authorized Service Providers Only)
The notebook’s BIOS IC cannot be replaced separately. If it is defective, you must replace the
motherboard. In some cases, however, you may be able to reprogram a malfunctioning BIOS IC using
either e-DiagTools for Windows, a BIOS floppy disk, or a Crisis Recovery floppy disk.
If the notebook will boot sufficiently, use e-DiagTools for Windows or a BIOS floppy disk to
reprogram the BIOS...

2-30 Removal and Replacement HP Omnibook XT6050, XT/VT6200
Using a Crisis Recovery Floppy Disk
If you do not have a BIOS Crisis Recovery floppy, download the package from the Partnership web site
(see page vi) under Product Support Information in the Service and Support Library. Follow the
instructions for creating the floppy.
  Caution
 
Make sure to use the correct BIOS Crisis Recovery floppy for the Omnibook model you are
repairing. The program does not verify the Omnibook model, so you could...

HP Omnibook XT6050, XT/VT6200 Removal and Replacement 2-31
Removing Other Components
(HP Authorized Service Providers Only)
Required Equipment
 
• Small Phillips screwdriver.
 
• Small flat-blade screwdriver.
Removal Procedure
 1.
 Unplug the AC adapter, if present, and remove the battery and any secondary battery module.
 2.
 Remove the assemblies and follow the additional steps given in the table below.
  Table 2-5. Removing Omnibook Components
ComponentRemoval ProcedureAdditional Steps
Battery,...

2-32 Removal and Replacement HP Omnibook XT6050, XT/VT6200
ComponentRemoval ProcedureAdditional Steps
Doors, PCMCIAPlug-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).See the figure on page 2-25.
Heatsink (with fan)See page 2-15.
KeyboardSee page 2-13.
Panel, sound/IRPlug-in module
(page 2-5).
Hard disk drive (page 2-7).
Power button panel
(page 2-11).
Keyboard (page 2-13)....

HP Omnibook XT6050, XT/VT6200 Removal and Replacement 2-33
ComponentRemoval ProcedureAdditional Steps
PCA, motherboardSee page 2-23.
PCA, rear antenna
(wireless models only)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).1. Remove the retaining screw from the rear antenna
PCA, and detach the PCA by sliding it slightly to the
left.
2. On the bottom of the computer, loosen...

HP Omnibook XT6050, XT/VT6200 Troubleshooting and Diagnostics 3-1
3 
Troubleshooting and Diagnostics
This chapter includes troubleshooting and diagnostic information for testing the functionality of the
notebook, and for identifying faulty components:
 
• Troubleshooting information
 
… Checking for customer abuse (page 3-3).
 
… Troubleshooting the problem (page 3-3).
 
… Verifying the repair (page 3-4).
 
… Suggestions for troubleshooting (page 3-5).
 
• Diagnostic tools
 
… e-Diagtools diagnostic...

3-2 Troubleshooting and Diagnostics HP Omnibook XT6050, XT/VT6200
Troubleshooting
The suggestions in this section can help isolate and repair the cause of a problem. To ensure quality
repair, follow the basic troubleshooting steps shown below.
 
Check the customers description
of the problem and any supporting
information.
Try to duplicate the customers
problem.
Troubleshoot the problem using:
  - Diagnostic tools.
  - Troubleshooting suggestions.
Verify the repair by testing the
functionality of the...

HP Omnibook XT6050, XT/VT6200 Troubleshooting and Diagnostics 3-3
Checking for Customer Abuse
Some units may appear to have been damaged by customer abuse. Use these guidelines to help
determine if this is the case:
 
• If the shipping box is seriously damaged, customer abuse 
cannot be declared.
 
• If the damage 
could have a cause other than customer abuse, customer abuse 
cannot be declared.
 
• If the unit shows any of the following, customer abuse is declared:
 
… Missing parts.
 
… Broken plastic...

3-4 Troubleshooting and Diagnostics HP Omnibook XT6050, XT/VT6200
Swapping modules that may be defective with others known to be good is generally an ideal way to
find the module responsible for the problem. A failure symptom is rarely caused by more than one
module, so you will not usually need to replace more than one to correct a particular failure.
After you replace a module, the notebook will normally be in a confused state and lock up when you
apply power. If this happens, press the system-off...