IBM DS3500

Replacing a power supply
(L003)
1
2
or
!
1
2
The power supplies are customer replaceable units (CRUs) and do not require
preventive maintenance. Use only the supported power supplies for the storage
subsystem.
Each power supply has a built-in sensor that detects the following conditions:
v Over-voltage
v Over-current
v Overheated power supply
If any of these conditions occurs, one or both power supplies will shut down. If the
power remains off (does not automatically restart), make sure that the environment
is optimal (no overheating has occurred, all electrical receptacles are working, and
so on). For more information, see “Restoring power after an unexpected shutdown”
on page 83.
If both power supplies fail or if the power supplies cannot maintain an internal
temperature below 65°C (149°F), the power supplies will automatically shut down
(an overtemperature condition). If this occurs, you must cool the storage subsystem
and restart it. See “Restoring power after an unexpected shutdown” on page 83.
114 System Storage DS3500 and EXP3500: Installation, User’s, and Maintenance Guide