IBM EXP15, Руководство по техническому обслуживанию аппаратной части

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ports should remain on. If other amber LEDs remain
lit, refer to “Symptom-to-FRU Index” on page 71.
Turning off the expansion unit:
Attention:
Except in an emergency, never turn off the power if any
Fault LEDs are lit on the expansion unit. Correct the fault
before you 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 “Symptom-to-FRU Index” on page 71.
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 service technician tells you to turn off the power.
A power outage or emergency situation occurs (see
“Performing an emergency shutdown” on page 67).
Caution
The power control button on the device and the power
switch on the power supply do not turn off the
electrical current supplied to the device. The device
also might have more than one power cord. To
remove all electrical current from the device, ensure
that all power cords are disconnected from the power
source.
1
2
Use this procedure to turn off the power.
1. Check the system documentation for all hardware
devices you intend to turn off and determine the
proper power-down sequence.
2. Make sure that all I/O activity has stopped.
3. 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 “Symptom-to-FRU Index” on
page 71.
4. Turn off both power supply switches on the back on
the expansion unit.
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IBM Netfinity EXP15, EXP200, EXP500 HMM