Sun Microsystems Sun Fire X4140, Service Manual

Page: 60 / 168

4-6 Sun Fire X4140 Server Service Manual • September 2010
4.1.3 Removing DDR2 DIMMs
Caution – Ensure that all power is removed from the server before removing or
installing DDR2 DIMMs. You must disconnect the power cables before performing
this procedure.
1. Review Section 4.1.2, “DDR2 DIMM Guidelines” on page 4-3 for memory
configuration information.
2. Prepare the server for service.
a. Power off the server.
See Section 2.4, “Powering Off the Server” on page 2-4 .
b. Disconnect the power cord (or cords) from the power supply (or supplies).
See Section 2.4, “Powering Off the Server” on page 2-4 .
c. Extend the server into the maintenance position.
See Section 2.5, “Extending the Server to the Maintenance Position” on
page 2-5 .
d. Attach an antistatic wrist strap.
See Section 2.7, “Performing Electrostatic Discharge and Antistatic Prevention
Measures” on page 2-9 .
e. Remove the top cover.
See Section 2.8, “Removing the Top Cover” on page 2-11 .
3. If you are replacing a faulty DDR2 DIMM, press the “Remind” button to
activate the DDR2 DIMM status LEDs after power is removed.
All faulty DDR2 DIMMs are indicated with an amber LED on the motherboard, so
that you can install the replacement DDR2 DIMM in the same location.
Tip – Make a note of the faulty DDR2 DIMM location.
4. Push down on the ejector tabs on each side of the DDR2 DIMM until the
FB-DIMM is released (
FIGURE 4-3
).
5. Grasp the top corners of the faulty DDR2 DIMM and remove it from the server.