HP omnibook OmniBook XE2 Service Manual page 50

Symptom Call Center:
Suggestions
Audio
Sound does not Check settings in BIOS
play 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).
Sound does not Check settings in BIOS
record Setup.
Check software controls for
microphone—it should not be
muted in recording panel.
Note: The microphone
should normally be muted in
the master output panel.
Serial/Parallel
General problems Check settings in BIOS
Setup.
Check settings in Control
Panel (and in Windows NT
Diagnostics).
Infrared
General problems Infrared communication is not
supported in
Windows NT 4.0.
Infrared is disabled and no
drivers installed as shipped.
(Drivers are included.)
Check settings in BIOS
Setup.
Standard IrDA and fast-IrDA
are incompatible (they use
different drivers).
For fast-IrDA, check for DMA
conflict with ECP parallel
port.
USB
General problems USB is not supported in
Windows NT 4.0.
3-8 Troubleshooting and Diagnostics
Repair Center: Repair Center:
Likely Causes Comments
Speakers. Check operation using
headphones or external
I/O PCA.
speakers.
Motherboard.
Inverter PCA (mic). Check operation using
external microphone.
Motherboard.
I/O PCA.
Motherboard. Use loop-back connector
during test—see page 3-13.
I/O PCA.
Motherboard.
Motherboard.
HP OmniBook XE2