HP omnibook xt1000 Service Manual

HP Pavilion zt1100/xz100 Omnibook xt1000 

Troubleshooting and Diagnostics 

3-7 

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. 
Motherboard. 
Fan. 
Heatsink. 

Check battery and AC 
adapter. 
Check fan and heatsink. 

AC adapter does 
not power 
notebook. 

Try another AC adapter, if 
available. 

AC adapter. 
Motherboard. 

AC adapter cannot be 
repaired, and must be 
replaced. 

Notebook has short 
operating time. 

Turn down display 
brightness. 
Check timeout settings in 
Power Options in Control 
Panel. 
Battery gauge may need 
calibration. Restart notebook, 
press F6 when HP logo 
appears, and follow onscreen 
instructions. This calibrates 
the battery, and requires four 
to five hours. You cannot use 
notebook during this process. 
Certain applications can 
cause excess CPU and 
power usage. (Users can get 
Intel Power Monitor from 
www.intel.com and monitor 
CPU load.) 
When playing DVD movies 
on battery power, use Power 
Options in Control Panel to 
select Portable/Laptop power 
scheme. 
When using applications with 
automatic save feature (such 
as MS Word), extend save 
time or disable to reduce 
hard disk access and power 
usage. 
PCMCIA card use can affect 
battery life. Some PCMCIA 
cards draw power even while 
not in use. 
Heavy modem use can affect 
battery operating time. 

Battery. 
Motherboard. 

Rechargeable batteries tend 
to degrade over time. 
Appropriate battery training 
and calibration is required for 
maximum battery life. Battery 
life may vary depending on 
notebook model. 
Approximate battery life by 
type (depending on usage 
and battery calibration): 
• 8-cell LiIon: up to 3.5 hrs. 
• 6-cell LiIon: up to 2.5 hrs. 
• 8-cell NiMH: up to 2 hrs.