Sun Microsystems Blade 1500 - Openboot PROM Memory Message; TABLE 11-2 Openboot PROM Memory Check Actions

11-12 Sun Blade 1500 Service, Diagnostics, and Troubleshooting Manual • December 2004
■ Otherwise, reposition the chassis, install the access panel, power on the system,
and verify the DIMM installation.
Refer to:
■ “Repositioning the Chassis” on page 15-1
■ “Installing the Access Panel” on page 15-5
■ “Powering On the Workstation” on page 15-8
■ “Verifying an Installation” on page 15-11
If you installed unsupported DIMMs, consider the following section.
11.1.4 OpenBoot PROM Memory Message
During system start-up, the OpenBoot PROM checks the installed DIMMs for their
type and manufacturer.
TABLE 11-2 shows the check result and the action taken by the
OpenBoot PROM.
Note – If the newly installed memory is incompatible with the Sun Blade 1500
workstation version of the OpenBoot PROM, the system beeps three times and
power off. See “Identifying the DIMMs” on page 11-2.
Note – If you only have one DIMM pair installed, and the DIMMs have a different
architecture, the system beeps three times and power off. No message is displayed.
The Sun Blade 1500 workstation has four DIMM slots above the CPU. The two lower
slots make up bank0, the two upper slots make up bank2. The OpenBoot PROM
references the memory by its bank if a problem is found.
TABLE 11-2 OpenBoot PROM Memory Check Actions
Check Result Action Taken
Wrong type of DIMM System beeps three times and powers off.
DIMMs in a pair have different
architecture.
System does not use unlike DIMMs. A message is
displayed and the system continues to boot.
DIMMs in a pair are from different
manufacturers.
System uses DIMMs from different manufacturers. A
message is displayed and the system continues to
boot.
NOTICE - CPU0 Bank0 DIMMs are from different vendors.