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 IC. If you cannot boot the notebook adequately, use a Crisis Recovery floppy disk.
See below for instructions for all three methods.
  Caution
 
The BIOS update completely replaces the previous BIOS, so follow the directions in this section
exactly
 or you might damage the notebook. The BIOS update also resets the configurations in the
BIOS Setup utility—except for BIOS passwords—so record these before performing the update.
Using a BIOS Floppy Disk
Use a BIOS floppy disk to update the notebook’s BIOS as follows:
 1.
 Undock the notebook if it is docked, and remove any PC cards from it.
 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 the AC adapter to the notebook.
 4.
 Insert the BIOS floppy disk into the floppy drive.
 5.
 Turn on the notebook. When the notebook boots, follow the instructions that appear on screen.
 6.
 When the process is completed, press the system-off switch to reset the system.
BIOS updates are also available from the HP Business Support web site (www.hp.com/go/bizsupport).
Installation utilities and instructions for creating a BIOS floppy disk are provided with the updates.
Using e-DiagTools for Windows
If the notebook allows you to boot into Windows, you may be able to use e-DiagTools for Windows to
update the notebook’s BIOS as follows:
 1.
 In Windows, exit any programs that are running.
 2.
 Undock the notebook if it is docked, and remove any PC cards from it.
 3.
 Connect the AC adapter to the notebook.
 4.
 Connect any cables or equipment needed to connect to the Internet.
 5.
 Click Start, Programs (or All Programs), HP e-DiagTools, e-DiagTools for Windows.
 6.
 Click Update, select Download New and click OK. Follow the instructions that appear. 
Once the
update process begins, do not interrupt it.
The first time you make an Internet connection from this program on a particular unit, click
Change Settings in the Connect window to define your connection settings.
 7.
 When the process is completed, press the system-off switch to reset the system. 
						

							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 accidentally install the
wrong BIOS.
 1.
 Insert the BIOS Crisis Recovery disk in the floppy disk drive.
 2.
 Turn on the computer and allow it to boot from the floppy disk.
 If the notebook does not turn on at all, do the following to boot from the floppy disk:
  a.
 Unplug the AC adapter.
  b.
 Press and hold Fn+B.
  c.
 Plug in the AC adapter.
  d.
 Release Fn+B.
 
Note: If the notebook will not boot from the floppy, try plugging the boot-block jumper into the
notebook’s parallel port. See the wiring diagram below.
141
25 13
  Figure 2-21. Boot-Block Jumper
 3.
 The display goes blank for a minute or more while the BIOS is reprogrammed.
 
Note: If you plugged in a boot block jumper, unplug it before the notebook automatically reboots.
 4.
 After the BIOS is reprogrammed, check the BIOS version to make sure it is the latest version.
If necessary, download the latest BIOS version and reprogram the BIOS IC. 
						

							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, CMOSPower button panel
(page 2-11).
Keyboard (page 2-13).
Heatsink (page 2-15).Reassembly Notes:
 After replacing the CMOS
battery, set the correct time and date using the BIOS
Setup utility or Date/Time in the Control Panel.
Card, mini-PCI #2Plug-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).
Motherboard (page 2-23).The card is attached to the underside of the
motherboard. Release the two latches at the sides of
the card so the free edge of the card pops up.
Case, bottomSee page 2-23.
Case, topSee page 2-21.
Cover, center hingePower button panel
(page 2-11).
Display assembly
(page 2-19).Reassembly Note:
 Make sure the center hinge cover
fits over the tab in the bottom case.
CPU moduleSee page 2-17.
Display assemblySee page 2-19.
Doors, dockingPlug-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. 
						

							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).
Heatsink (page 2-15).
Display assembly
(page 2-19).
Top case (page 2-21).Reassembly Notes:
 Insert the tabs on the ends of the
panel into the slots in the bottom case.
Panel, mini-PCIPlug-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).On the rear of the computer, remove the screw at the
far left end (nearest the mini-PCI panel). 
Detach the
cables from mini-PCI card and motherboard.
PCA, display interfacePlug-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).Unplug the speaker cable, and carefully lift the PCA off
of its connector.
PCA, front 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).Disconnect the front antenna PCA flex cable from the
motherboard, and the coaxial cable from the mini-PCI
card (see Figure 2-19 on page 2-26). 
						

							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 the screw
holding the mini-PCI cover (the cover retains the
screw), and remove the cover.
3. Disconnect the cable from the mini-PCI card, and
remove the PCA from the computer.
Reassembly Notes:
 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.
PCA, volumePlug-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).Remove the screw from the PCA, and carefully lift it off
of its connector.
Socket, 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).1. On the bottom of the computer, loosen the screw
holding the mini-PCI cover (the cover retains the
screw), and remove the cover.
2. Remove both screws (M2x4mm) from inside the
mini-PCI compartment.
3. Remove the two screws attaching the socket to the
motherboard (see Figure 2-16 on page 2-24).
4. Unplug the PCMCIA socket from the motherboard.
Speaker assemblyPlug-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. Disconnect the cable from the display interface
PCA.
2. Lift the display interface PCA out of the notebook.
3. Lift the speaker assembly out of the notebook. 
						

							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 program (page 3-19).
 
… Power-on self-test (page 3-23).
 
… Sycard PCCtest 450/460 PC card (page 3-27).
 
… Windows Management Instrumentation/Desktop Management Interface (page 3-28).
 
… BIOS Setup utility (page 3-29). 
						

							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 complete unit.
Check for customer abuse.
 
  Figure 3-1. Basic Troubleshooting Steps 
						

							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 parts.
 
… Parts not original to the unit.
 
… Damaged or missing keys on the keyboard.
Table 3-2 includes additional criteria for determining customer abuse to specific parts of the unit.
  Important
 
Parts damaged by customer abuse are not covered by the warranty.
Troubleshooting the Problem
Record pertinent information about the unit:
 
• Model and serial number.
 
• Operating system and version.
 
• Software version (stored in hidden file c:\version.inf).
 
• BIOS version.
 
• Accessories and peripherals used.
Analyze the problem:
 
• 
Observe Symptoms. Using the customer’s information, try to duplicate the problem. Determine
how the problem differs from proper behavior. Also, note the functions that 
do work properly.
 
• 
Separate Problems. If there are multiple symptoms, separate them into distinct problems.
 
• 
Consider Causes. Keep in mind possible causes for each problem. Use the diagnostic tools and
troubleshooting suggestions to help find possible causes.
 
… The e-Diagtools diagnostic program tests most of the notebook’s components using automatic
and interactive tests, and will be your primary troubleshooting tool. Other tools include the
power-on self-test, WMI/Toptools (if installed), the BIOS Setup utility, and the Sycard
PCCtest. Table 3-1 on page 3-5 shows how you can use these tools to isolate the cause of the
computer’s problem.
 
… The troubleshooting suggestions on page 3-6 include general suggestions for repairing units
that show specific failure symptoms. 
						

							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 switch: this resets the notebook, so that you can
restart it in a known state.
Verifying the Repair
Before returning the repaired unit to the customer, verify the repair by running the following tests:
 
• 
e-
Diagtools Basic Diagnostic Test. Run the basic test of the e-Diagtools diagnostic program
(page 3-19).
 –and–
 
• 
Function Tests. Run tests that check the repaired function, such as those in e-Diagtools (page 3-
19).
 –and–
 
• 
Failed Tests. Run any other tests that failed during troubleshooting.