46
Quick Reference Guide
Power Problems
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the
Product Information Guide
.
I
F
T H E
P O W E R
L I G H T
I S
G R E E N
A N D
T H E
C O M P U T E R
I S
N O T
R E S P O N D I N G
—
See
"Diagnostic Lights" on page 26.
I
F
T H E
P O W E R
L I G H T
I S
B L I N K I N G
G R E E N
—
The computer is in standby mode.
Press a key on the keyboard, move the mouse, or press the power button to resume
normal operation.
I
F
T H E
P O W E R
L I G H T
I S
O F F
—
The computer is either turned off or is not receiving
power.
• Reseat the power cable in the power connector on the back of the computer and the
electrical outlet.
• Bypass power strips, power extension cables, and other power protection devices to
verify that the computer turns on properly.
• Ensure that any power strips being used are plugged into an electrical outlet and are
turned on.
• 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" in your
User’s Guide
).
I
F
T H E
P O W E R
L I G H T
I S
B L I N K I N G
A M B E R
—
The computer is receiving electrical
power, but an internal power problem may exist.
• Ensure that the voltage selection switch is set to match the AC power at your location
(if applicable).
• Ensure that all components and cables are properly installed and securely connected
to the system board (see "System Board Components" in your
User’s Guide
).
I
F
T H E
P O W E R
L I G H T
I S
S T E A D Y
A M B E R
—
A device may be malfunctioning or
incorrectly installed.
• Remove and then reinstall all memory modules (see "Removing the Front Panel" in
your
User’s Guide
).
• Remove and then reinstall any expansion cards, including graphics cards (see "Cards"
in your
User’s Guide
).
E
L I M I N A T E
I N T E R F E R E N C E
—
Some possible causes of interference are:
• Power, keyboard, and mouse extension cables
• Too many devices connected to the same power strip
• Multiple power strips connected to the same electrical outlet
Содержание Precision T7400 DCDO
Страница 1: ...w w w d e l l c o m s u p p o r t d e l l c o m Dell Precision T7400 Quick Reference Guide Model DCDO ...
Страница 4: ...4 Contents ...
Страница 52: ...52 Quick Reference Guide ...
Страница 58: ...58 Index ...
Страница 59: ...w w w d e l l c o m s u p p o r t d e l l c o m Dell Precision T7400 Rövid referencia útmutató Típus DCDO ...
Страница 62: ...62 Tartalomjegyzék ...
Страница 126: ...126 Tárgymutató ...
Страница 127: ...w w w d e l l c o m s u p p o r t d e l l c o m Dell Precision T7400 Skrócone informacje o systemie Model DCDO ...
Страница 192: ...192 Indeks ...
Страница 193: ...w w w d e l l c o m s u p p o r t d e l l c o m Dell Precision T7400 Краткий справочник Модель DCDO ...
Страница 262: ...262 Указатель ...
Страница 263: ...320 אינדקס ...
Страница 317: ...266 תוכן ...
Страница 320: ...w w w d e l l c o m s u p p o r t d e l l c o m Dell Precision T7400 מדריך עזר מהיר דגם DCDO ...