HP Omnibook Xe2 Service Manual

HP OmniBook XE2 Removal and Replacement 2-21
Removing Other Components
(HP Authorized Service Providers Only)
Required Equipment
 · Small Phillips screwdriver.
 · Pointed knife or probe (for display components).
 · 5-mm hex driver (or 3/16 inch) (for bottom case components).
Removal Procedure
 1. Unplug the AC adapter, if present, and remove the battery.
 2. Remove the additional assemblies and follow the special steps indicated in the tables below.
Components are separated into these groups:
 · Display...

2-22 Removal and Replacement HP OmniBook XE2
ComponentRemoval ProceduresAdditional Steps (See figures on pages 4-2, 4-4)
Bottom CaseKeyboard (see page 2-9).
Top case (see page 2-15).
CPU and motherboard
(see page 2-17).Remove heatsink, drives, PCAs, CPU module, and
motherboard (page 2-17).
CD-ROM DriveKeyboard (see page 2-9).
Top case (see page 2-15).Remove heatsink (page 2-17).
CPU Module / CPUSee page 2-17. Remove heatsink (page 2-17).
FanSee page 2-7.
Floppy Disk DriveKeyboard (see page 2-9).
Top case...

HP OmniBook XE2 Troubleshooting and Diagnostics 3-1
This chapter includes troubleshooting and diagnostic information for testing the functionality of the
OmniBook and identifying faulty modules:
 · Troubleshooting information
  Troubleshooting the problem (page 3-2).
  Verifying the repair (page 3-3).
  Suggestions for troubleshooting (page 3-4).
 · Diagnostic tools
  OmniBook hardware diagnostic program (page 3-11).
  Power-on self-test (page 3-16).
  Desktop Management Interface (page 3-20).
  BIOS...

3-2 Troubleshooting and Diagnostics HP OmniBook XE2
Troubleshooting
The suggestions in this section can help isolate and repair the cause of a problem. To ensure quality
repair, HP recommends that you follow the basic troubleshooting steps shown in the illustration
below.
 
 Figure 3-1. Basic Troubleshooting Steps
Troubleshooting the Problem
Record pertinent information about the unit:
  Model and serial number.
  Operating system and version.
  BIOS version.
  Accessories and peripherals used.
Analyze...

HP OmniBook XE2 Troubleshooting and Diagnostics 3-3
 · Consider Causes. Keep in mind possible causes for each problem. Use the diagnostic tools and
troubleshooting suggestions to help find possible causes.
  The OmniBook diagnostic program is the primary troubleshooting tool—it tests most
components using automatic and interactive tests. The table on page 3-4 shows how you can
use the different diagnostic tools to isolate the cause.
  The troubleshooting suggestions on page 3-5 include general...

3-4 Troubleshooting and Diagnostics HP OmniBook XE2
Suggestions for Troubleshooting
 Table 3-1. Scope of Diagnostic Tools
FunctionOmniBook
Diagnostics
Power-On
Self-Test
DMI/TopTools
(if installed)
BIOS Setup
BootupTests Describes
(SafeTools)Configures
ProcessorTests
(System menu)Tests Describes
(AssetTools)
MemoryTests
(Memory menu)Tests Describes
(AssetTools)Describes
BatteriesDescribes
(AssetTools)
DisplayTests (Video,
Mem,User menus)Describes
(AssetTools)
Hard diskTests
(IDE menu)Tests Describes...

HP OmniBook XE2 Troubleshooting and Diagnostics 3-5
If you can’t isolate the cause of a problem using the diagnostic tools, you can use the suggestions in
the following table to help find the problem.
 Table 3-2. Troubleshooting Suggestions
SymptomCall Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
To help determine likely causes, check to see what replaceable modules are involved in the system function and
what roles they play. See the table on page 1-13.
Startup
Does not boot...

3-6 Troubleshooting and Diagnostics HP OmniBook XE2
SymptomCall Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
Password has been
forgottenVerify proper ownership, then
follow the removal procedure
with the owner and log the
appropriate data—see page
5-1.The user must call Technical
Support and provide proof of
ownership. Password
removal is restricted to
certain sites. See page 5-1.
Power/Battery
Short battery
operating timeTurn down display
brightness.
Check power management...

HP OmniBook XE2 Troubleshooting and Diagnostics 3-7
SymptomCall Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
Hard disk makes
clunking or
scratching noiseBack up the drive
immediately.
Was the computer or drive
dropped?Hard drive. Check the computer and
drive for evidence of
customer abuse.
Hard disk makes
buzzing or whining
noiseBack up the drive
immediately.
Check for alternate noise
sources, such as a PCMCIA
drive or fan.
If a keystroke causes the
sound to change, it may be...

3-8 Troubleshooting and Diagnostics HP OmniBook XE2
SymptomCall Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
Audio
Sound does not
playCheck settings in BIOS
Setup.
Increase sound volume
(Fn+UPARROW and
software controls).
Check whether mute is active
(mute button and software
controls).
Check for sound resource
conflicts in Device Manager
(Windows 95/98) or
Administrative Tools or
Control Panel System
(Windows NT).Speakers.
I/O PCA.
Motherboard.Check operation using
headphones...