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Netfinity EXP300 Type 3531 5
2. Make sure that all amber fault LEDs are off. If any fault LEDs are lit (drives,
power supplies, or ESM boards), correct the problem before you turn off the
power. For guidance, refer to “Symptom-to-FRU index” on page 7.
3. Turn off both power supplies.
Turning off the expansion unit in an emergency
Attention: Emergency situations might include fire, flood, extreme weather
conditions, or other hazardous circumstances. If a power outage or emergency
situation occurs, always turn off all power switches on all computing equipment.
This will help safeguard your equipment from potential damage due to electrical
surges when power is restored. If the expansion unit loses power unexpectedly, it
might be due to a hardware failure in the power system or midplane (see “Symptom-
to-FRU index” on page 7).
Use the following procedure to turn off the expansion unit during an emergency
situation:
1. Power down the server attached to the expansion unit.
2. If you have time, stop all activity and check the LEDs (front and back). Make note
of any fault LEDs that are lit so that you can correct the problem when you turn
on the power again.
3. Turn off all power supplies; then, unplug the power cables from the expansion
unit.
Turning on the expansion unit after an
emergency
Use the following procedure to restart the expansion unit if you turned off the power
supplies during an emergency shutdown, or if a power failure or a power outage
occurred:
1. After the emergency situation is over or power is restored, check the expansion
unit for damage. If there is no visible damage, continue with Step 2; otherwise,
consult with customer to repair the unit.
2. After you have checked for damage, plug in the expansion-unit power cables and
turn on the power switches.
3. Check the system documentation for the hardware devices you intend to turn on,
and determine the proper power-on sequence.
Note: Be sure to turn on the IBM Netfinity EXP300 before or at the same time
you turn on the system unit.
4. Turn on each device, based on the power-on sequence.
5. Turn on both power supplies on the back of the IBM Netfinity EXP300.
6. Only the power (green) LEDs on the front and back should be on. If one or more
of the fault (amber) LEDs are on, refer to “Symptom-to-FRU index” on page 7 for
instructions.
7. Use your installed software application as appropriate to check the status of the
expansion unit.
Operating specifications
The following table summarizes the operating specifications of the expansion unit.