AC Repair and Adjustment Procedures
FRP 3: Power Supply Replacement
HMM-168-A
Cray Research/Silicon Graphics Proprietary
27
d. Install the seven 2.5-mm hex bolts. Tighten the bolts until finger tight.
e. Use a torque driver to tighten the 2.5-mm and 3-mm hex bolts to
21 in-lbs. Be careful not to strip the screws.
4.
Replace the heat sink cover:
a. Position the tabbed end of the heat sink cover toward the handle.
b. Install the 8 screws and washers. Tighten the screws hand tight.
Power Supply Installation
1.
Insert the replacement power supply in the power supply rails:
a. Position the replacement power supply with the power connector
blades toward the chassis, the handle toward your chest, and the heat
sink toward your right.
b. Align the power supply assembly with the slots in the power supply
rails, then insert the supply partially into the rails with even pressure.
c. When the power supply handle is near the upper mechanical interlock,
rotate the interlock until its slot aligns with the power supply handle.
d. Ensure that the slot in the lower interlock aligns with the power supply
handle. If not, rotate the lower interlock.
e. Fully insert the power supply.
The power supply output connector blades will engage the module
power connector, and the power supply handle will pass through the
slot in mechanical interlock until it contacts the end of the rail.
2.
Secure the power supply to the lower power supply rail with the retaining
screw in the power supply handle.
3.
Connect the control connector to the power supply and tighten the
retaining screws.
4.
Install the power cord:
a. Rotate the lower mechanical interlock counterclockwise until the
power receptacle is fully exposed.