Troubleshooting
75
Power Lights
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the
Product Information Guide
.
The power button light located on the front of the computer illuminates and
blinks or remains solid to indicate different states:
•
If the power light is blue and the computer is not responding, see
"Diagnostic Lights" on page 76.
•
If the power light is blinking blue, the computer is in standby mode. Press
a key on the keyboard, move the mouse, or press the power button to
resume normal operation.
•
If the power light is off, the computer is either turned off or is not
receiving power.
–
Reseat the power cable into both the power connector on the back of
the computer and the electrical outlet.
–
If the computer is plugged into a power strip, ensure that the power
strip is plugged into an electrical outlet and that the power strip is
turned on.
–
Bypass power protection devices, power strips, and power extension
cables to verify that the computer turns on properly.
–
Ensure that the electrical outlet is working by testing it with another
device, such as a lamp.
–
Ensure that the main power cable and front panel cable are securely
connected to the system board (see "System Board Components" on
page 103).
•
If the power light is blinking amber, the computer is receiving electrical
power, but an internal power problem might exist.
–
Ensure that the voltage selection switch is set to match the AC power
at your location, if applicable.
–
Ensure that the processor power cable is securely connected to the
system board (see "System Board Components" on page 103).
book.book Page 75 Tuesday, November 27, 2007 10:29 AM
Содержание XPS 420
Страница 58: ...58 Setting Up and Using Your Computer book book Page 58 Tuesday November 27 2007 10 29 AM ...
Страница 60: ...60 Optimizing for Greater Performance book book Page 60 Tuesday November 27 2007 10 29 AM ...
Страница 218: ...218 Glossary book book Page 218 Tuesday November 27 2007 10 29 AM ...
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