Technical data

Troubleshooting
4-11
DIGITAL PC 3500/5510
Computer Troubleshooting
Problem Possible Cause Action
No response when the
computer is turned on.
Computer is not plugged in. Turn off the computer, plug it in, and then
turn it back on again.
No power at the wall outlet. Use another wall outlet.
Main logic board failure. Replace the main logic board.
Main logic board jumpers
incorrectly set.
Set all appropriate jumpers (Refer to the
computer’s
System Reference
guide).
CPU has failed. Replace the CPU.
Power supply has failed. Replace the power supply.
Voltage select switch is set
incorrectly.
Make sure the setting on the back of the
computer matches the country’s voltage
requirements. Refer to the supplied
Quick
Setup
guide for more information.
Power is on, screen is on,
but the computer does not
respond.
Keyboard not connected, mouse
not connected, or both might be
in the wrong port.
Connect the keyboard and/or mouse. If
already connected, confirm that each
device is in the appropriate port.
Power is on, but there is
no screen display.
Brightness and contrast controls
are not correctly set.
Adjust the brightness and contrast
controls.
Monitor is in power saving
mode.
Make sure the power light on the monitor
is green. If not, and the Power Saving light
is lit, press the [Shift] key to reactivate
monitor.
Monitor is off. Turn on the monitor.
Monitor cable is incorrectly
installed.
Check all monitor connections.
Incorrect video drivers installed. Install the correct video drivers.
Video controller has failed. Replace the main logic board.
Monitor has failed. Try another monitor. If the new monitor
operates correctly, replace the old monitor
following the Customer Replacement Unit
process described in the
Warranty and
Information
booklet.
continued