3. If an expansion enclosure is installed, remove it (see “Removing an expansion
enclosure from a system-board tray” on page 73); otherwise, remove the
system-board tray cover (see “Removing the system-board tray cover” on page
121).
4. Remove the heat sink.
Attention:
Do not touch the thermal material on the bottom of the heat sink.
Touching the thermal material will contaminate it. If the thermal material on the
microprocessor or heat sink becomes contaminated, you must replace it.
a. Loosen the screw on one side of the heat sink to break the seal with the
microprocessor.
b. Press firmly on the captive screws and loosen them with a screwdriver.
c. Use your fingers to gently pull the heat sink off the microprocessor.
d. Pull the thermal sensor clip off the heat sink; then, place the heat sink
upside down on a clean, flat surface.
Attention:
Do not use any tools or sharp objects to lift the release lever on
the microprocessor socket. Doing so might result in permanent damage to the
system board.
Microprocessor
release lever
Microprocessor
retainer
5. Rotate the locking lever on the microprocessor socket from its closed and
locked position until it stops in the fully open position (approximately a 135°
angle). Lift the microprocessor retainer cover upward.
6. Use your fingers to pull the microprocessor out of the socket.
Microprocessor
Microprocessor
socket
Alignment marks
Microprocessor retainer
7. If you are instructed to return the microprocessor and heat sink, follow all
packaging instructions, and use any packaging materials for shipping that are
supplied to you.
142
System x iDataPlex dx340 Types 6385, 6386, 6389, 7831, 7832, and 7834: Problem Determination and Service Guide
