HP Omnibook Xe4500 Service Manual

							HP Omnibook XE4100/XE4500 Removal and Replacement 2-37
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 might 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.
Using e-DiagTools for Windows
  Caution
  The BIOS update completely replaces the previous BIOS, so follow these directions 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.
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 PCMCIA 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), Hewlett-Packard, Notebook, 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 completes, press the power button to reset the notebook.
BIOS updates are 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. 
						

							2-38 Removal and Replacement HP Omnibook XE4100/XE4500
Using a BIOS Floppy Disk
If you do not have a BIOS floppy disk, download the package from the Partnership web site (see page
vii) under Product Support Information in the Service and Support Library. Follow the instructions for
creating the BIOS floppy disk.
  Caution
 
Make sure to use the correct BIOS floppy disk 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 floppy disk in the floppy disk drive.
 2. Turn on the notebook and allow it to boot from the BIOS floppy disk.
 If the notebook does not turn on at all, do the following to boot from the BIOS 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 BIOS floppy disk, try plugging the boot-block jumper
into the notebook’s parallel port. See the wiring diagram below.
 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 reprograms itself, check the BIOS version to make sure it is the latest version.
If necessary, download the latest BIOS version and reprogram the BIOS IC.
 
141
25 13
  Figure 2-22. Boot-Block Jumper 
						

							HP Omnibook XE4100/XE4500 Removal and Replacement 2-39
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.
 2. Remove the assemblies and follow the additional steps listed in the table below.
 
Table 2-5. Removing Omnibook XE4100/XE4500 Components
ComponentRemoval ProcedureAdditional Steps
Battery, CMOSKeyboard cover
(page 2-10).
Speaker (page 2-12).
Switchboard PCA
(page 2-13).
Keyboard (page 2-13).
CD/DVD (page 2-16).
Display (page 2-17).
Top case (page 2-20).
Heatsink (page 2-27).
Floppy (page 2-22).
Motherboard (page 2-31).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.
Case, bottomSee page 2-35.
Case, topSee page 2-20.
CD/DVD driveSee page 2-16.
CPU moduleSee page 2-29.
Display assemblySee page 2-17.
Doors, PCMCIAKeyboard cover
(page 2-10).
Speaker (page 2-12).
Switchboard PCA
(page 2-13).
Keyboard (page 2-13).
CD/DVD (page 2-16).
Display (page 2-17).
Top case (page 2-20).
Heatsink (page 2-27).
Floppy (page 2-22).
Motherboard (page 2-31).See page 2-35.
Floppy driveSee page 2-22. 
						

							2-40 Removal and Replacement HP Omnibook XE4100/XE4500
ComponentRemoval ProcedureAdditional Steps
Guide, HDDKeyboard cover
(page 2-10).
Speaker (page 2-12).
Switchboard PCA
(page 2-13).
Keyboard (page 2-13).
CD/DVD (page 2-16).
Display (page 2-17).
Top case (page 2-20).W hen replacing the HDD guide, make sure you only
replace the two right screws. Do not replace the two
left screws.
Heatsink (with fan)See page 2-27.
KeyboardSee page 2-13.
Panel, wirelessKeyboard cover
(page 2-10).
Speaker (page 2-12).
Switchboard PCA
(page 2-13).
Keyboard (page 2-13).
CD/DVD (page 2-16).
Display (page 2-17).
Top case (page 2-20).Press the tabs on both sides of the panel and then lift
it from the bottom case.
PCA, I/RSee page 2-25.
PCA, left and right
antennas (wireless
models only)Keyboard cover
(page 2-10).
Speaker (page 2-12).
Switchboard PCA
(page 2-13).
Keyboard (page 2-13).
CD/DVD (page 2-16).
Display (page 2-17).
Top case (page 2-20).
Heatsink (page 2-27).
Floppy (page 2-22).
Motherboard (page 2-31)
Bottom case (page 2-35).Disconnect the front antenna PCA cables from the
mini-PCI card (page 2-6).
Be careful not to bend the metal tabs on the bottom
case when removing or replacing either of the two
antenna PCAs.
PCA, motherboardSee page 2-31.
PCA, switchboardSee page 2-13.
Socket, PCMCIAKeyboard cover
(page 2-10).
Keyboard (page 2-13).
CD/DVD (page 2-16).
Display (page 2-17).
Top case (page 2-20).
Heatsink (page 2-27).
Floppy (page 2-22).
Motherboard (page 2-31).1.  Remove the two screws attaching the socket to the
motherboard.
2.  Unplug the PCMCIA socket from the motherboard.
Speaker assemblySee page 2-12. 
						

							HP Omnibook XE4100/XE4500 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:
 • ASP support information
 • 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 3-17).
 … Power-on self-test (page 3-20).
 … Sycard PCCtest 450/460 PC card (page 3-25).
 … Windows Management Instrumentation (page 3-26).
 … BIOS Setup utility (page 3-27).
Support by Authorized Service Providers
In the U.S., support of Omnibook XE4000 series notebook computers by Authorized Service Providers
(ASPs) is a purchasable option. Standard predefined models and standard special models do not
include ASP support. The sales force has the option of creating models with ASP support using the
specials process.
The serial number label on the bottom of the notebook indicates the ASP support status for that model.
See the following table.
  Table 3-1. ASP Support Options
Serial Number LabelASP Support Status
“NoASP” No reimbursement to ASP for parts or labor. However the ASP is authorized to
repair the notebook, and reimbursement can be negotiated directly with the
customer.
“ASP” Parts and labor will be reimbursed to the ASP.
In other countries, ASP support is standard in most situations—but you should check the marking on
the serial number label to verify the ASP support status for that model. 
						

							3-2 Troubleshooting and Diagnostics HP Omnibook XE4100/XE4500
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 XE4100/XE4500 Troubleshooting and Diagnostics 3-3
Checking for Customer Abuse
Some notebooks might 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 notebook shows any of the following, customer abuse is declared:
 … Missing parts.
 … Broken plastic parts.
 … Parts not original to the notebook.
 … Damaged or missing keys on the keyboard.
Table 3-3 lists additional criteria for determining customer abuse to specific parts of the notebook.
  Important
 
Parts damaged by customer abuse are not covered by the warranty.
Troubleshooting the Problem
Record pertinent information about the notebook:
 • 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 is 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 3-2 on page 3-5 shows how you can use these tools to isolate the cause of the
notebook’s problem.
 … The troubleshooting suggestions on page 3-6 include general suggestions for repairing
notebooks that show specific failure symptoms. 
						

							3-4 Troubleshooting and Diagnostics HP Omnibook XE4100/XE4500
Swapping modules that might 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 reset button: this turns the notebook off, so that you can restart it
in a known state.
Verifying the Repair
Before returning the repaired notebook 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 3-17).
 –and–
 • 
Function Tests. Run tests that check the repaired function, such as those in e-Diagtools (page 3-
17).
 –and–
 • 
Failed Tests. Run any other tests that failed during troubleshooting. 
						

							HP Omnibook XE4100/XE4500 Troubleshooting and Diagnostics 3-5
Suggestions for Troubleshooting
  Table 3-2. Scope of Diagnostic Tools
Functione-DiagtoolsPower-On
Self-Test
Sycard
PCCtest 450
WMI/
Toptools
(if installed)
BIOS Setup
BootupTests Describes Configures
ProcessorTests Describes
MemoryTests Tests Describes Describes
FanTests
BatteriesTests (CMOS
battery only)Describes
DisplayTests Describes Configures
Hard diskTests Tests Describes Configures
Floppy driveTests* Tests Describes Configures
KeyboardTests Tests Describes
AudioTests
SerialTests* Describes Configures
ParallelTests Describes Configures
LANTests Describes Configures
ModemConfigures
WirelessConfigures
InfraredDescribes Configures
PS/2 port
Tests†Configures
USBDescribes Configures
Port replicator
PCMCIATests Tests Describes
IEEE 1394Tests
AC adapterStatus
* Test might be available only on certain units.†Use an external keyboard to exercise the port. Run the external 101-key test. 
						

							3-6 Troubleshooting and Diagnostics HP Omnibook XE4100/XE4500
If you cannot isolate the cause of a problem using the above diagnostic tools, use the suggestions in the
following table to help find the problem.
  Table 3-3. Troubleshooting Suggestions
SymptomCall Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
To help determine likely causes of a problem, determine which replaceable modules are involved in the system
function and what roles they play: see the figure on page 1-14 and the table on page 1-15.
Startup
Does not boot on
AC or battery.Check power source.
Press and hold power button
to turn notebook off, then
press power button to turn
notebook on.
Unplug AC adapter, remove
the battery and any PC
cards, press reset button to
turn notebook off, then
reconnect power and try
again.
Do not use touch pad while
booting or resuming.
Remove all but one SDRAM
module and try again.
Reinsert any other SDRAM
module and try again.AC adapter.
SDRAM module.
CPU module.
Switchboard PCA.
Motherboard.
Display assembly.
Hard drive.Check AC adapter. Remove
all but one SDRAM module
and try again.
If power status light does not
turn on, reprogram BIOS,
replace top case, replace
motherboard.
If power status light turns on
but display remains off, try
external monitor. If monitor
shows successful boot,
replace display assembly. If
monitor shows activity but
BIOS does not complete,
replace display assembly. If
monitor is blank, replace
switchboard PCA, replace
motherboard.
If power status light and
display turn on, BIOS
completes, but OS does not
start from hard disk or floppy
drive, replace CPU module,
replace motherboard. If OS
starts from floppy drive,
reload hard drive, replace
hard drive.
Beeps once, spins
hard disk, repeats,
but does not boot.Make sure at least one
SDRAM module is installed.SDRAM module.
Does not boot on
battery, but boots
on AC.Make sure battery is properly
installed and fully charged.
Check battery level on
battery LEDs.
Check battery contacts. If
available, try another battery.Battery or contacts.
Motherboard.
Does not boot from
floppy drive.Make sure floppy disk is
bootable.
Use BIOS Setup to check
default boot order.Floppy disk or floppy
drive.
Motherboard.Make sure floppy drive is
installed and connected
correctly.
Does not boot from
CD in CD/DVD
drive.Make sure CD is bootable.
Use BIOS Setup to check
default boot order.
Restart notebook.CD/DVD drive.
Motherboard.Make sure CD/DVD is
installed and connected
correctly.