HP Omnibook Xt1500 Service Manual

Technology Code ID)  Removal and Replacement  2-39 
Component Removal Procedure Additional Steps 
PCA, volume control Keyboard cover 
(page 2-9). 
Keyboard (page 2-11). 
Display assembly 
(page 2-18).  
Top case (page 2-27). 
Hinge saddle, right 
(page 2-30). Carefully lift the PCA off of its connector and out of the 
notebook. 
 
Saddles, hinge See page 2-30.   
Socket, PCMCIA Plug-in module (page 2-5). 
Hard disk drive (page 2-6). 
Keyboard cover 
(page 2-9). 
Keyboard (page 2-11). 
SDRAM modules...

Technology Code ID)  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 3-4). 
…Verifying the repair (page 3-4). 
…Suggestions for troubleshooting (page 3-5). 
• Diagnostic tools 
…e-DiagTools diagnostic program (page...

3-2  Troubleshooting and Diagnostics  Technology Code ID) 
Troubleshooting 
The suggestions in this section can help isolate and repair the cause of a problem. To ensure quality 
repairs, follow the basic troubleshooting steps shown below. 
  
Check the customer’s description
of the problem and any supporting
information.
Try to duplicate the customer’s
problem.
Troubleshoot the problem using:
  - Diagnostic tools.
  - Troubleshooting suggestions.
Verify the repair by testing the
functionality of the...

Technology Code ID)  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....

3-4  Troubleshooting and Diagnostics  Technology Code ID) 
Troubleshooting the Problem 
Record pertinent information about the notebook: 
• Model and serial number. 
• Operating system and version. 
• Software version (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...

Technology Code ID)  Troubleshooting and Diagnostics  3-5 
Suggestions for Troubleshooting 
  Table 3-1. Scope of Diagnostic Tools 
Function e-DiagTools Power-on self-test Sycard PCCtest 450 BIOS 
Bootup  Tests    Configures 
Processor Tests Tests     
Memory Tests Tests     
Fan Tests      
Batteries   Tests (CMOS battery 
only)    at boot to calibrate 
Display Tests      
Hard disk Tests Tests     
Keyboard Tests Tests     
Parallel Tests      
LAN Tests      
Modem Tests      
PCMCIA/ 
PC Cardbus...

3-6  Troubleshooting and Diagnostics  Technology Code ID) 
Symptom Call Center: 
Suggestions 
Repair Center: 
Likely Causes 
Repair Center: 
Comments 
Does not boot on 
AC or battery. Check power source. 
Press reset switch to reset 
notebook, then press power 
button to turn notebook on. 
Unplug AC adapter, remove 
battery and any PC cards, 
then reconnect power and try 
again. 
Do not use touch pad while 
booting or resuming. 
Remove battery, AC adapter, 
and any PC cards. Plug in 
AC adapter, reset...

Technology Code ID)  Troubleshooting and Diagnostics  3-7 
Symptom Call Center: 
Suggestions 
Repair Center: 
Likely Causes 
Repair Center: 
Comments 
Battery does not 
charge. Make sure AC adapter is 
connected properly and 
battery installed properly. 
Check battery contacts. If 
available, try another battery 
and AC adapter. 
Move notebook away from 
any nearby heat source. 
Unplug AC adapter and allow 
battery to cool down. Check 
for blocked air vents. Battery or contacts. 
AC adapter....

3-8  Troubleshooting and Diagnostics  Technology Code ID) 
Symptom Call Center: 
Suggestions 
Repair Center: 
Likely Causes 
Repair Center: 
Comments 
Battery indicator is 
inaccurate. Time Remaining is an 
estimate based on how much 
power the notebook is using 
at that moment. It therefore 
depends on the current task, 
and assumes power will be 
used at the same rate until 
the battery runs out. So, for 
example, if the notebook is 
performing a task requiring a 
good deal of power (such as 
reading...