Sun Microsystems Blade 1500 - Replacing the Dimms; Identifying the Dimms

11-2 Sun Blade 1500 Service, Diagnostics, and Troubleshooting Manual • December 2004
Caution – When servicing or removing workstation components, attach an
antistatic strap to your wrist and then to a metal area on the chassis. Then disconnect
the power cord from the workstation and the wall receptacle. Following this caution
equalizes all electrical potentials with the workstation.
11.1 Replacing the DIMMs
This section describes removal and installation of the memory modules. Topics
include:
■ “Identifying the DIMMs” on page 11-2
■ “Removing DIMMs” on page 11-3
■ “Installing DIMMs” on page 11-7
■ “OpenBoot PROM Memory Message” on page 11-12
Click this film icon to view an animated version of these instructions.
Caution – DIMM memory is installed in pairs. However, if you replace a single
DIMM, the installed part must be identical to the one removed.
Caution – Handle the DIMMs along the outside edges. Do not handle the DIMM
along the gold contact edge. Do not touch DIMM components or other metal parts.
Always wear a antistatic wrist strap when handling DIMMs.
11.1.1 Identifying the DIMMs
Sun Blade 1500 workstation memory is installed as matched pairs of dual inline
memory modules (DIMMs). The DIMMs are installed on the motherboard in
consecutive slots. The workstation requires a minimum of one pair of matching
DIMMs, installed in DIMM0 and DIMM1. An additional pair of DIMMs can be
installed in DIMM2 and DIMM3.
FIGURE 11-1 shows the location and identifies the
DIMMs.