Dell Precision 690 User Manual
Page 112
in sets of four with one of the four on each riser card.
Install memory modules in order of their labels on the system board; matched sets of four should be installed first into DIMM_1 on each board and then
DIMM_2 on each board, and so on.
Installing Memory (With Optional Memory Riser Cards)
1.
Follow the procedures in
Before You Begin
.
2.
Remove the computer cover (see
Removing the Computer Cover
).
3.
Loosen the captive thumbscrews that secure the memory shroud and lift it away from the computer.
NOTICE:
Do not install non-ECC, unbuffered, or non-fully-buffered memory modules. Doing so may cause the system not to boot.
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION:
To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE:
To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your
computer's electronic components. You can do so by touching an unpainted metal surface on the computer.
CAUTION:
Your computer is heavy (it has an approximate minimum weight of 55 lbs) and can be difficult to maneuver. Seek assistance before
attempting to lift, move, or tilt it; this computer requires a two-man lift. Always lift correctly to avoid injury; avoid bending over while lifting. See
your Product Information Guide for other important safety information.
CAUTION:
The computer stand should be installed at all times to ensure maximum system stability. Failure to install the stand could result in the
computer tipping over, potentially resulting in bodily injury or damage to the computer.
1 memory shroud
2 thumbscrews (2)
CAUTION:
Fully-buffered memory modules may become very hot during normal operation. Ensure that memory modules have had sufficient time
to cool before you touch them.