Digital Equipment EK-SFXXS-SG-003, Service Manual

Page: 163 / 224

SF7x Storage Enclosure FRU Replacement 6–55
Install the new OCP cable.
1. While facing the front of the storage enclosure, connect all the OCP
cables to the new TTM:
Left-rear disk ISE, J8 (left-rear of the TTM)
Left-front disk ISE, J10 (left-front of the TTM)
Right-front disk ISE, J9 (right-front of the TTM)
Right-rear disk ISE, J7 (right-rear of the TTM)
2. Reinstall the acoustic panels to the sides of the inner assembly. Note
that the end stamped
front
aligns with the front of the enclosure.
WARNING—USE TWO PEOPLE.
Use two people to place the inner assembly back into the
extrusion tube mounted in the DECarray.
3. Slide the inner assembly back into the extrusion tube. Secure the
front panel captive screws. Do not use excessive force as it may strip
the threads in the extrusion tube.
4. Replace the front and rear storage enclosure covers and tighten the
top captive screws.
5. Replace the OCP by aligning the OCP connector pins with the TTM
clip fasteners on the transition-termination module. Push, do not
force, the OCP into the fasteners by applying equal pressure to both
sides.
6. At the rear of the storage enclosure, reconnect the ac power cord to
the ac receptacle on the power supply.
7. Replace the DSSI interconnect cables to the rear bulkhead of the
enclosure.
8. Restore the enclosure to service, and run the checkout procedure in
Section 6.8.