HP omnibook xt1000 Service Manual

Page of 105
3-14 
Troubleshooting and Diagnostics 
HP Pavilion zt1100/xz100 Omnibook xt1000 
Symptom 
Call Center: 
Suggestions 
Repair Center: 
Likely Causes 
Repair Center: 
Comments 
Parallel/USB 
 
 
 
General problems. 
Check connections. 
Restart notebook. 
Check port settings in Device 
Manager. 
Check settings in Control 
Panel. 
Use troubleshooters in 
Windows Help. 
For USB: contact device 
vendor and HP Notebook 
web site (see page vi) for 
latest USB drivers. 
For USB: if the device is 
powered by the USB port, try 
the other port. 
Parallel/USB device. 
Motherboard. 
Use loop-back connector 
when testing parallel port—
see page 3-24. 
Does not boot from 
external USB floppy 
drive. 
Make sure floppy disk is 
bootable. 
Make sure floppy drive is 
connected correctly. 
Use BIOS configuration utility 
to check boot order. 
Floppy drive. 
Motherboard. 
 
Modem 
 
 
 
Modem will not 
connect at 56K. 
Verify that host modem 
supports 56K (V.90) 
connection speed. 
Try connecting later in case 
line quality or other external 
factor is cause of problem. 
 
 
Modem doesn’t dial 
or no dial tone. 
Check all cables and 
connections. 
Connect a standard 
telephone to the phone line 
and make sure the line is 
working. 
Try another telephone line, 
preferably one used for a fax 
machine or modem. 
If you’re in a foreign country, 
the dial tone may not be 
recognized by the modem. In 
Control Panel, disable option 
that waits for dial tone. 
Phone message recording 
services provided by phone 
companies use “broken dial 
tone” to indicate waiting 
message. This can prevent 
notebook from detecting dial 
tone. 
Mini-PCI card. 
Motherboard.