Troubleshooting Scenarios And Solutions; Solving Minor Problems - HP Xw8400 - Workstation - 4 GB RAM Technical Reference Manual

Table 5-2 Diagnostic LED codes (continued)
Power LED and Sound
Activity
Blinks red 8 times, once per
second, then 2 second pause,
8 beeps
Blinks red 9 times, once per
second, then 2 second pause, 9
beeps
* Refer to the Service and Technical Reference Guide for your workstation for BIST information.

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
Workstation appears locked
up and will not turn off when
the power button is pressed.
Workstation seems to be
locked up.
Workstation date and time
display is incorrect.
Workstation appears to pause
periodically.
Cursor will not move using the
arrow keys on the keypad.
ENWW
Chassis Indicator LEDs
System board failure (ROM detected failure before video).
1. Clear CMOS.
2. Replace system board.
CAUTION: Disconnect AC power from the workstation before reseating or replacing
components because there is power to the system board even when the workstation is powered
down.
Invalid ROM based on bad checksum.
1. Clear CMOS.
2. Upgrade the ROM using a ROMPaq diskette, CD, diskette, or USB removable device
(e.g., HP Drive Key). See the ROM Flash section of the Service and Technical Reference
Guide at http://www.hp.com/support/workstation_manuals.
3. Replace system board.
CAUTION: Disconnect AC power from the workstation before reseating or replacing
components because there is power to the system board even when the workstation is powered
down.
System powers on but is unable to boot.
1. Replace the system board.
2. Replace the processor.
Cause
Software control of the power
switch is not functional.
Program in use has stopped
responding to commands.
Real-time clock (RTC) battery
might need to be replaced.
Network driver is loaded and no
network connection is
established.
The Num Lock key might be on.
Diagnosis and Service Action
Possible Solution
1. Press and hold the power button for at least four
seconds until the workstation turns off.
2. Disconnect electrical plug from outlet.
1. Attempt the normal Windows shut down procedure.
2. Restart the workstation using the power button.
1. Reset the date and time under Control Panel.
2. Replace the RTC battery.
Establish a network connection, or use Computer Setup or
Microsoft Windows Device Manager to disable the network
controller.
Press Num Lock. The Num Lock key can be disabled (or
enabled) in Computer Setup.

Troubleshooting scenarios and solutions 109