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Chapter 2 Product Overview and Troubleshooting 2-31
that has caused the error indicate that an error has occurred. The LEDs on the
operator panel (back) indicate the status of the operator as a single unit. However,
some FRUs like DIMMs do not have LEDs.
Whether a FRU without LEDs is in the normal state can be checked by executing the
XSCF Shell commands showhardconf and ioxadm from a maintenance terminal.
For details of the commands, see the SPARC Enterprise
M3000/M4000/M5000/M8000/M9000 Servers XSCF Reference Manual.
2.7.1 When target FRU is indicated by LEDs
When an error message is displayed at the system console and the cause of the error
is in hardware, a faulty FRU must be removed and replaced. Each FRU is equipped
with an LED to indicate whether an error has occurred in the FRU and an LED to
indicate whether the FRU can be removed. Most FRUs are named READY LED and
CHECK LED. In some cases, names are not indicated but the icons are always
printed or icon labels are always affixed. Such FRUs include the back of the operator
panel, XSCFUs, CMUs, XBUs, CLKUs, FANs, and HDDs.
2.7.2 When target FRU is not indicated by LEDs
For some FRUs, the READY LED and CHECK LED are not used as the names of the
LEDs that are checked at replacement. Even in such a case, the same icons as those
for the READY LED and CHECK LED are used so that the meaning of LEDs can be
understood. Even if the names of LEDs are not indicated, the icons are always
printed or icon labels are always affixed.
TABLE 2-11 LED Display That Should Be Checked When a FRU Is Replaced (Common)
LED Display and meaning
READY
(green)
Indicates whether the unit is operating (whether it is configured into the system).
Lit Indicates that the FRU is operating. The FRU cannot be disconnected and
removed from the system. Therefore, the FRU cannot be replaced.
Blinking Indicates that the FRU is being configured into the system (or, for an XSCFU,
being initialized) or being disconnected from the system. However, for a PSU, it
indicates that the main line switch has been switched on.
Off Indicates that the FRU is stopped and disconnected from the system. Therefore,
the FRU can be replaced.