The following illustration shows the dual inline memory module (DIMM) connectors
and corresponding LEDs on the system board.
DIMM 4
DIMM 3
DIMM 2
DIMM 1
DIMM 1 error LED
DIMM 2 error LED
DIMM 3 error LED
DIMM 4 error LED
Attention: Static electricity that is released to internal server components when
the server is powered-on might cause the server to stop, which could result in the
loss of data. To avoid this potential problem, always use an electrostatic-discharge
wrist strap or other grounding system when working inside the server with the
power on.
To install a DIMM, complete the following steps:
1. Read the safety information that begins on page v and “Installation guidelines”
on page 7.
2. Turn off the server and peripheral devices, and disconnect the power cords and
all external cables.
3. Remove the side cover (see “Removing the side cover” on page 10).
14 xSeries 206m Types 8485 and 8490: Installation Guide