HP omnibook xt1000 Service Manual

Page of 105
HP Pavilion zt1100/xz100 Omnibook xt1000 
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)   
<F6> at boot to calibrate 
Display 
Tests  
 
 
Hard disk 
Tests 
Tests   
Keyboard 
Tests 
Tests   
Parallel 
Tests  
 
 
LAN 
Tests  
 
 
Modem 
Tests  
 
 
PCMCIA/ 
PC Cardbus 
Tests  
Tests 
 
 
CD/DVD drive 
Tests 
Tests (with boot CD) 
 
 
 
Use an appropriate external device to exercise the port. See the help text for the tests. 
 
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 3-2. Troubleshooting Suggestions 
Symptom 
Call 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 Figure 1-8 on page 1-14 and Table 1-6 on page 1-15. 
Startup 
 
 
 
Does not boot on 
battery, but boots 
on AC. 
Make sure battery is properly 
installed and fully charged. 
Check battery contacts. If 
available, try another battery. 
Battery or contacts. 
Motherboard. 
 
Does not boot from 
CD in CD/DVD 
drive. 
Make sure CD is bootable. 
Use BIOS configuration utility 
to check boot order. 
Restart notebook. 
CD/DVD drive. 
Motherboard. 
 
Sluggish startup or 
shutdown. 
Check disk using Tools tab in 
disk’s Properties sheet, and 
use Disk Defragmenter to 
optimize hard drive. 
Delete temporary and 
unneeded files. 
Hard drive. 
Use suggestions shown at 
left.