Installation and Maintenance
3-31
Compaq Confidential – Need to Know Required
Writer: Bob Young Project: RAID Array 3000 Controller Shelf Hardware User’s Guide Comments:
Part Number: EK-SMCPQ-UG. D01 File Name: d-ch3 Installation and Maintenance.doc Last Saved On: 12/4/00 1:08 PM
Replacing the UPS
Proceed as follows to replace the UPS:
1.
Ensure the UPS power switch is set to Off.
2.
Disconnect the shelf power cords from the rear receptacles on the UPS.
3.
Disconnect the UPS power cord from the wall outlet.
4.
Disconnect the serial control cable from the controller shelf.
5.
Remove the screws that secure the front panel of the UPS to the cabinet.
6.
Remove the UPS.
7.
Install the replacement UPS and replace the screws removed in step 5 to
secure the unit.
8.
Reconnect the power cords and the serial control cable.
9.
Set the UPS output voltage level to your specific AC power source.
10.
Set the UPS power switch to On, set the UPS low-battery warning
option to five minutes (refer to UPS manual), and then power-up the
shelf.
Replacing a Blower
WARNING:
Only qualified service personnel should access the rear of the shelf
to replace a blower.
The controller shelf has two blowers mounted on the rear. Connectors on the
backplane provide the +12 VDC to operate the blowers. When a blower fails,
the shelf status (amber) LED on the power supply SBB turns Off and an error
message is passed to the controller or host via the shelf status signal. The
Device I/O assembly status LEDs indicate which blower has failed and then
automatically switches the remaining blower to high speed. Refer to the SBB
I/O Module User’s Guide supplied with the device expansion shelf for
additional LED and blower status information.
Use one of the following procedures to replace a blower (see Figure 3-18).
CAUTION:
The blowers are dual-speed devices and should be replaced only
with identical units.
Shelf airflow is lost when a blower is removed. Replace immediately or damage
can result.