HP xw4000 Service & Reference Manual page 168

Troubleshooting Without Diagnostics
Display (Continued)
Problem
The picture is broken up; it rolls, jitters,
or blinks.
Screen goes blank.
Monitor overheats.
Cursor will not move using the arrow
keys on the numeric keypad.
SCSI
Problem
System with IDE and SCSI drives will
not boot from SCSI hard drive.
System will not boot from a SCSI drive.
F–6
Possible Solution
1. Be sure the monitor cable is securely connected to the
computer.
2. In a two-monitor system or if another monitor is in close
proximity, move the monitors apart to be sure they are
not interfering with the other's magnetic field.
3. Fluorescent lights or fans may be too close to the
monitor.
A screen blanking utility may be installed or energy saver
features may be enabled. Press any key or type password.
There is not enough ventilation space for proper airflow.
Leave at least 3 inches (7.6 cm) of ventilation space. Be sure
there is nothing on top of the monitor obstructing the air
flow.
The Num Lock key is on. Press the key to turn it off. The Num
Lock light should not be on when you want to use the arrow
keys.
Possible Solution
The IDE drive needs to be disabled. Under the Computer
Setup Advanced menu, disable the primary IDE controller.
1. The SCSI drive is not configured correctly.
2. Ensure that drive cabling and jumpers are set correctly.
To boot a SCSI drive, the drive ID number must be set to
0.
Service Reference Guide