Dell Precision T3400 (Late 2007) - Manual (Page 267)

Getting Help
267
Before You Call
NOTE:
Have your Express Service Code ready when you call. The code helps Dell’s
automated-support telephone system direct your call more efficiently. You may also
be asked for your Service Tag (located on the back or bottom of your computer).
Remember to fill out the Diagnostics Checklist (see "Diagnostics Checklist" on
page 268). If possible, turn on your computer before you call Dell for assistance
and call from a telephone at or near the computer. You may be asked to type
some commands at the keyboard, relay detailed information during operations,
or try other troubleshooting steps possible only at the computer itself. Ensure
that the computer documentation is available.
CAUTION:
Before working inside your computer, follow the safety instructions in
your Product Information Guide.