Replacing SA7x FRUs
7.7 Remote OCP Cable Removal and Installation
7.7.1 Removing a Remote OCP Cable
Use the following procedure to remove a remote OCP cable.
1. Take all of the drives in the enclosure off line and release the Run switches to
spin down the drives. (See Section 4.4.)
2. Remove power to the enclosure by turning off the Master On/Off switch and
disconnecting the power cord. (See the appropriate storage array guide for
complete information about how the enclosure power supply power cord is
routed through the cabinet and connects to the cabinet power controller.)
3. Remove the front and rear enclosure covers. For each cover, loosen the two
mounting screws (located in the upper corners of the cover), then lift the cover
up and outward to clear the enclosure.
4. Disconnect the storage array SDI interface cables from the rear bulkhead of
the enclosure. (Refer to Figure 7–3.)
5. If the cabinet has a cabinet stabilizer foot installed, extend it. (Refer to
Figure 7–2.)
6. Remove the OCP. (See Section 7.3.)
7. Remove the power supply. (See Section 7.2.)
8. Remove all disk drives. (See Chapter 6.)
9. Loosen the four mounting screws (located at each corner of the enclosure) and
slide the enclosure frame partially out of the cabinet.
WARNING
Be careful when pulling out the enclosure frame for access to its internal
components. A stop mechanism in the chassis locks the frame at a point
that allows access to the transition boards and the fan assembly. This
stop mechanism locks the chassis so that the frame is three-quarters of
the way out of the chassis. If you release this stop, nothing prevents the
frame from being pulled completely free of the chassis.
10. Double check the enclosure to verify there is nothing to prevent the frame
from being pulled out farther. Reach into the chassis and release the chassis
latch. (It may be necessary to push the frame back in about a quarter inch
for the latch to release.)
WARNING
Releasing the chassis latch allows the frame to be removed from the
chassis for this operation. Be prepared to take the weight of the frame
when it comes free of the chassis. Have a work space ready to put the
frame on after it is removed.
11. Pull the frame free of the chassis by reaching into the frame and grasping the
sheet metal in front of the fan. Set the frame on an antistatic work surface.
12. Turn the frame so that the side with the defective remote OCP cable is facing
up.
7–12 Replacing SA7x FRUs
