2-16 SPARC Enterprise M8000/M9000 Servers Service Manual • June 2010
■ Removing an I/O unit (IOU)
2.3 Operator Panel
The operator panel controls the high-end server power. The operator panel is usually
locked with a key to prevent the server from being mistakenly powered off through
an operator error during system operation.
Before starting maintenance work, ask the system administrator to unlock the
operation panel.
2.3.1 Operator Panel Location
FIGURE 2-12 indicates the location of the operator panel (OPNL) of the high-end
servers. The expansion cabinet is not equipped with the operator panel.