Sun Microsystems SPARCstation 4, Service Manual

Page: 138 / 190

11-20 SPARCstation 4/Xterminal 1 Service Manual • January 1995
11.3.2 Replacing the DSIMM
1. Carefully remove the new DSIMM from its protective packaging and place it on
an antistatic surface.
The bag in which the DSIMM is packed makes a good antistatic surface.
2. Choose any available DSIMM slot and unlock (press down) the ejector levers
at both ends of the connector.
3. Align the DSIMM with the slot.
Hold the DSIMM by its edges and orient it so that the two notches at the bottom of
the DSIMM line up with the two tabs in the DSIMM connector. See
FIGURE 11-21
.
Note –
The slot closest to the rear panel must always contain a DSIMM. If you
combine different capacity DSIMMs in the same system, this slot must contain the
highest capacity DSIMM.
FIGURE 11-21
Orienting the DSIMM
4. Place your thumbs as shown in
FIGURE 11-22
and push the DSIMM firmly into its
connector.
5. To lock the DSIMM in place, push both ejector levers into the upright position.
Align notches with
corresponding
tabs in DSIMM
connector.