Turning the Expansion Unit On and Off
Turning Off the Power
Attention:
Except in an emergency, never turn off the power if any
Fault LEDs are lit on the expansion unit, especially on the drives.
Correct the fault before you attempt to turn off the power, using the
proper troubleshooting or servicing procedure. This will ensure that
the expansion unit will power up correctly later. For guidance, refer
to Table 2 on page 60.
The expansion unit is designed to run continuously, 24 hours a day.
Once you turn on the expansion unit, do not turn it off. Turn off
the power only when:
Instructions in a hardware or software procedure require you to
turn off the power.
A factory representative or service technician tells you to turn
off the power.
A power outage or emergency situation occurs (see “Performing
an Emergency Shutdown” on page 57).
Use this procedure to turn off the power.
1. Make sure that all I/O activity has stopped. If applicable,
logically disconnect from the host controller.
2. Make sure that all amber Fault LEDs are off. If any Fault LEDs
are lit (drives, power supplies, or fans), correct the problem
before you turn off the power. For guidance, refer to Table 2
on page 60.
3. Turn off both power supply switches on the back of the
expansion unit.
56
IBM Netfinity EXP15 Installation and User's Handbook
Summary of Contents for EXP15
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