Dell XPS 730 H2C Quick Reference Guide - Page 37

Beep Codes, Service Manual

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• If the power button LED 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 the Service Manual at support.dell.com). NOTE: All front panel and back panel LEDs will turn off during sleep states. Beep Codes Your computer may emit a series of beeps during start up. The series of beeps is called a beep code and can be used to help identify a problem with your computer. If your computer emits a series of beeps during start-up: 1 Write down the beep code. 2 Run the Dell Diagnostics to identify the cause (see "Dell™ Diagnostics" on page 29). 3 See "Contacting Dell" on page 72 for instructions on obtaining technical assistance. Troubleshooting 37

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Troubleshooting
37
•
If the power button LED 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 the
Service Manual
at
support.dell.com
).
NOTE:
All front panel and back panel LEDs will turn off during sleep states.
Beep Codes
Your computer may emit a series of beeps during start up. The series of beeps
is called a beep code and can be used to help identify a problem with your
computer.
If your computer emits a series of beeps during start-up:
1
Write down the beep code.
2
Run the Dell Diagnostics to identify the cause (see "Dell™ Diagnostics" on
page 29).
3
See "Contacting Dell" on page 72 for instructions on obtaining technical
assistance.