Troubleshooting - Acer AcerPower 4400 User Manual

Acer acerpower 4400: users guide
Table of Contents

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16
Chapter 1
Getting Started

Troubleshooting

If you encounter a hardware problem, we recommend that you
review the following suggestions before calling for service:
General failure
Front panel light doesn't work
"Garbage" or nothing appears on the screen
Warning! Never open the monitor case. The CRT monitor retains very high
voltage levels even after the power is turned off. Refer all monitor service to
qualified service technicians.
Keyboard is dead
Caution: Do not plug or unplug the keyboard while the power is on.
Are all cables securely plugged?
Are all system components and peripherals turned on?
Is the system main power switch on?
Is the power outlet burned out? You may check this by
plugging in and turning on some other piece of
equipment.
Are any cables damaged? Are they properly routed and
coiled? Entwined cables may cause signal interference.
After turning off the computer, check inside the system
unit and make sure that the front panel LED connector
for the LED that is not working is correctly plugged.
Refer to "Jumpers and Connectors" on page 27 to identify
the proper LED connector.
Is the monitor turned on? Is the screen brightness
adjusted properly?
Is the keyboard cable plugged in? Turn off the system
and plug in the keyboard.

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