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2. Turn off the server and peripheral devices, and disconnect the power cord and
all external cables.
3. Slide the server out of the rack.
4. Remove the cover (see “Removing the cover” on page 159).
5. Pull the hard disk drives out of the server slightly to disengage them from the
backplane. See “Removing a hot-swap hard disk drive” on page 211 for details.
6. To obtain more working room, remove the fans and the fan bracket (see
“Removing a hot-swap fan” on page 196 and “Removing the fan bracket” on
page 198).
7. Disconnect the backplane cables.
8. Lift the backplane out of the server by pulling it toward the rear of the server,
then lifting it up.
9. If you are instructed to return the backplane, follow all packaging instructions,
and use any packaging materials for shipping that are supplied to you.
162 ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Hardware Maintenance Manual