DELL F970N ユーザーズマニュアル

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 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. Also 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 power supply diagnostic light 

•

on the back of the system is on. If the light is 

off there may be a possible problem with the 

power supply or the power cable.

If the power light is solid white and the 
computer is not responding — The display may 

not be connected or powered on. Ensure that 

the display is properly connected and then turn 

it off, then back on.
If the power light is solid amber — The 

computer is in sleep state. Press a key on the 

keyboard, move the pointer on the trackpad or a 

connected mouse, or press the power button to 

resume normal operation.
If the power light is blinking amber — The 

computer is receiving electrical power, but a 

device might be malfunctioning or incorrectly 

installed. You may have to remove and then 

reinstall the memory modules (for information on 

removing and replacing memory modules, see 

the 

Service Manual

 on the Dell Support website 

at support.dell.com).