Dell Precision T3400 (Late 2007) - Manual (Page 55)

Quick Reference Guide 55
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 UN THE H ARDWARE T ROUBLESHOOTER — See "Hardware Troubleshooter" on page 41.
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 33.
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).