HP Xw6400 - Workstation - 4 GB RAM, Сервисное и техническое руководство

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Troubleshooting scenarios and solutions
This section presents an extensive overview of various troubleshooting scenarios and includes possible
solutions for each.
Solving minor problems
Table 5-3 Minor problems
Problem Cause Possible Solution
Workstation appears locked
up and will not shut down when
the power button is pressed. Software control of the power
switch is not functional. 1. Press and hold the power button for at least four
seconds until the workstation shuts down.
2. Disconnect electrical plug from outlet.
Workstation seems to be
locked up. Program in use has stopped
responding to commands. 1. Attempt the normal Windows shutdown procedure.
2. Restart the workstation using the power button.
Workstation date and time
display is incorrect. Real-time clock (RTC) battery
might need to be replaced. 1. Reset the date and time under Control Panel.
2. Replace the RTC battery.
Workstation appears to pause
periodically. Network driver is loaded and no
network connection is
established. Establish a network connection, or use Computer Setup or
Microsoft Windows Device Manager to disable the network
controller.
Cursor will not move using the
arrow keys on the keypad. The Num Lock key might be on. Press the Num Lock key. The Num Lock key can be
disabled (or enabled) in Computer Setup.
Poor performance is
experienced. Processor is hot. 1. Be sure airflow to the workstation is not blocked.
2. Be sure the fans are connected and working properly
(some fans only operate when needed).
3. Be sure the CPU heatsink is installed properly.
Hard drive is full. Transfer data from the hard drive to create more space on
the hard drive.
Workstation powered off
automatically and the Power
LED flashes red 2 times, once
every second, followed by a 2-
second pause, and two
simultaneous beeps are
heard. Processor thermal protection
activated.
A fan might be blocked or not
turning.
OR
The CPU heatsink is not properly
attached to the processor.
1. Be sure workstation air vents are not blocked and the
cooling fan is running.
2. Open the access panel, press the power button, and
see if the processor fan spins. If not spinning, be sure
the fan’s cable is plugged into the system board
header. Be sure the fan is fully/properly seated or
installed.
3. Replace the processor fan.
4. Reseat CPU heatsink and verify that the fan assembly
is properly attached.
System does not power on,
and the LEDs on the front of
the workstation are not
flashing. System unable to power on. Press and hold the power button for less than 4 seconds. If
the hard drive LED turns green, then:
1. Remove the expansion cards.
2. Replace the system board.
OR
ENWW Troubleshooting scenarios and solutions 111