HP XW3400 - Manual (Page 132)

Solving general problems
You may be able to easily resolve the general problems described in this section. If a problem persists
and you are unable to resolve it yourself or if you feel uncomfortable about performing the operation,
contact an authorized dealer or reseller.
WARNING! When the workstation is plugged into an AC power source, voltage is always applied to
the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure
to disconnect the power cord from the wall outlet and allow the internal system components to cool before
touching.
Look for the LED on the system board. If the LED is illuminated, the system still has power. Power off the
workstation and remove the power cord before proceeding.
Table D-1 Solving General Problems
Workstation appears locked up and will not turn off when the power button is pressed.
Cause Solution
Software control of the power switch is not functional. 1 . Press and hold the power button for at least four seconds
until the workstation turns off.
2 . Disconnect the power cord from the electrical outlet.
Workstation will not respond to USB keyboard or mouse.
Cause Solution
Workstation is in standby mode. To resume from standby mode, press the power button.
CAUTION: When attempting to resume from standby
mode, do not hold down the power button for more than four
seconds. Otherwise, the workstation will shut down and you will
lose any unsaved data.
System has locked up. Restart workstation.
Workstation date and time display is incorrect.
Cause Solution
RTC (real-time clock) battery may need to be replaced.
NOTE: Connecting the workstation to a live AC outlet
prolongs the life of the RTC battery.
First, reset the date and time under Control Panel (Computer
Setup can also be used to update the RTC date and time). If the
problem persists, replace the RTC battery. See the Hardware
Reference Guide on the Documentation and Diagnostics CD for
instructions on installing a new battery, or contact an authorized
dealer or reseller for RTC battery replacement.
Cursor will not move using the arrow keys on the keypad.
Cause Solution
The Num Lock key may be on. Press the Num Lock key. The Num Lock light should not be on if
you want to use the arrow keys. The Num Lock key can be
disabled (or enabled) in Computer Setup.
122 Appendix D Troubleshooting without diagnostics ENWW