IBM 8671 - Eserver xSeries 235, Maintenance And Troubleshooting Manual

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Notes:
1) Do not set the heat sink down after you remove the protective film.
Heat sink
Thermal grease
2) Do not touch the thermal grease on the bottom of the heat sink.
Touching the thermal grease will contaminate it. If the thermal grease
on the microprocessor or heat sink becomes contaminated, contact
your service technician.
b. Align and place the heat sink on top of the microprocessor (grease side
down) in the retention bracket. Press firmly on the heat sink.
c. Secure the heat sink to the microprocessor by tightening the captive
screws. Alternate between the two captive screws in the heat sink while
tightening them.
Attention: Alternate the tightening of the two captive screws to prevent
damage to the microprocessor. Ensure that the screws are completely
tightened (until they stop); otherwise, damage to the microprocessor will
occur.
10. Close the cover on the air-baffle assembly.
11. If you have other options to install or remove, do so now; otherwise, go to
“Installing the server bezel and left-side cover (tower model)” on page 100 or
“Installing the server bezel and top cover (rack configuration)” on page 103.
Replacing a hot-swap power supply
Some models of your server come with two hot-swap power supplies. You do not
need to turn off the server to replace a hot-swap power supply, but you must
replace only one power supply at a time.
1 2
I/O cable-restraint
bracket
Power-cord
restraint bracket
Hot-swap
power supply 2
Hot-swap
power supply 1
AC power LED
DC power LED
Handle
Release latch
Chapter 4. Customer replaceable units
87