Sun Microsystems 817-4054-15, Руководство по обслуживанию

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Chapter 1 Fault Isolation 1-9
1.4.1 Interpreting LEDs
Use the LEDs on the individual system components to determine if the system is
operating normally. Routinely monitor the LEDs on the following boards and
devices:
■
System controller and I/O assembly (IB_SSC)
■
CPU/Memory board
■
L2 Repeater boards
■
Fan trays
■
Power supplies
When the fault ( ) LED is on (lit), this indicates that a fault has occurred in the
system, and you should take immediate action to clear the fault.
TABLE 1-5
lists the
LED status codes for the system and for the following hot-swappable components:
■
CPU/Memory boards
■
Power supplies
■
Fans (main and IB)
■
Hard disk drives
You can only remove a hot-swappable powered-up component when the OK to
remove is lit.
Note –
The fan tray, IB_SSC, and L2 Repeaters are not hot-swappable. You must
power off the system in order to remove them.
Note – The main fans and the IB fans do not have OK to remove LEDs.