Compaq 3000 User Manual
Page 82
Chapter 3. Installation and Maintenance
EK–SMCPQ–UG. C01
3–31
3.6.2 Replacing a Power Supply SBB
CAUTION
When you remove a power supply, the airflow
through the shelf is reduced. Always install the re-
placement unit immediately to prevent overheat-
ing.
You can replace a dc power supply without affecting shelf operation using the
following procedure:
1.
Remove the ac input power cable from the shelf power supply.
2.
Squeeze the mounting tabs to release the unit and pull it out of the shelf.
3.
Insert the replacement power supply into the shelf slot, align the guide slots,
and then push it in until the SBB tabs lock into place.
4.
Connect the input power cable to the power supply ac receptacle.
5.
Observe the LEDs on the replacement power supply and ensure that the unit
is operating properly.
6.
If the shelf power is removed during power supply replacement, the con-
troller must place the storage devices on-line sequentially at four-second in-
tervals. Make sure the LEDs on both the power supply and the storage de-
vices indicate normal operation.