Dell Precision T7400 (Late 2007) User Manual
Page 46
46
Quick Reference Guide
Network Problems
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the
Product Information Guide.
C
H E C K
T H E
N E T W O R K
L I G H T
O N
T H E
F R O N T
O F
T H E
C O M P U T E R
—
If the link
integrity light is off (see "Controls and Lights" in your User’s Guide), no network
communication is occurring. Replace the network cable.
C
H E C K
T H E
N E T W O R K
C A B L E
C O N N E C T O R
—
Ensure that the network cable is
firmly inserted into the network connector on the back of the computer and the
network jack.
R
E S T A R T
T H E
C O M P U T E R
A N D
A T T E M P T
T O
L O G
O N
T O
T H E
N E T W O R K
A G A I N
C
H E C K
Y O U R
N E T W O R K
S E T T I N G S
—
Contact your network administrator or the
person who set up your network to verify that your network settings are correct and
that the network is functioning.
R
U N
T H E
H
A R D W A R E
T
R O U B L E S H O O T E R
—
See "Restoring Your Operating System"
in your User’s 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).