FRP 8: Top Module Rail Replacement
AC Repair and Adjustment Procedures
58
Cray Research/Silicon Graphics Proprietary
HMM-168-A
e. While you continue to press the plunger against the brace, rotate the
rail up and into installed position.
f. Use the 4-mm hex (allen) wrench to tighten the shoulder screw near
the power supplies until it is finger tight.
g. Insert a shoulder screw at the other end of the rail. Tighten the screw
until finger tight.
h. Use a mirror and flashlight to ensure that the plunger did not slip
below the cross brace.
i. Visually check to see that the rail is approximately aligned with the
power supply.
j. Ensure that the rail has a little play or give. It should move slightly
toward the power supply when pushed.
k. Insert a module (refer to
) to ensure that the rail aligns with the
power supply.
l. Carefully remove the module. Try not to move the rails when you
remove the module.
m. Tighten the two shoulder screws.
6.
Connect the associated wires and cables; refer to the notes you took
earlier and to the applicable wiring procedures in this document. Secure
the wires and cables as needed.
7.
If applicable, close the air seals on the cable ducts where wires pass
between cabinets.
8.
Carefully replace the modules. Correct any alignment problems. Refer to
9.
Reinstall all panels that you removed earlier.
10. Return the system to operation, ensure proper module function, and close
the cabinet doors.
CAUTION
Ensure that you do not pinch any wires or cables between the
rail and the top of the card cage.