Lenovo ThinkCentre M50e Hardware Maintenance Manual - Page 135

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7. Take note of the location of the DIMMs and remove them from the failing system board and install them on the new system board in the same location as they were on the failing system board. See "Removing and replacing memory" on page 125. 8. Remove the heat sink and microprocessor from the failing system board and install them on the new system board. See "Removing and replacing the microprocessor." Continue at the next step after installing the heat sink and microprocessor on the new system board. 9. Install the new system board and insert the screws. 10. Reconnect all cables to the system board. 11. Replace any air baffles or ducts. 12. Go to "Closing the cover and connecting cables" on page 133. Removing and replacing the microprocessor 1. Remove the cover. See "Removing the cover" on page 121. 2. Remove any air baffles or ducts that cover the microprocessor. 3. Disconnect the heat sink fan cable from the system board. Refer to "Identifying parts on the system board" on page 124. Chapter 10. Replacing FRUs (Types 8084, 8085, 8147, 8148, and 8179 129

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7.
Take
note
of
the
location
of
the
DIMMs
and
remove
them
from
the
failing
system
board
and
install
them
on
the
new
system
board
in
the
same
location
as
they
were
on
the
failing
system
board.
See
“Removing
and
replacing
memory”
on
page
125.
8.
Remove
the
heat
sink
and
microprocessor
from
the
failing
system
board
and
install
them
on
the
new
system
board.
See
“Removing
and
replacing
the
microprocessor.”
Continue
at
the
next
step
after
installing
the
heat
sink
and
microprocessor
on
the
new
system
board.
9.
Install
the
new
system
board
and
insert
the
screws.
10.
Reconnect
all
cables
to
the
system
board.
11.
Replace
any
air
baffles
or
ducts.
12.
Go
to
“Closing
the
cover
and
connecting
cables”
on
page
133.
Removing
and
replacing
the
microprocessor
1.
Remove
the
cover.
See
“Removing
the
cover”
on
page
121.
2.
Remove
any
air
baffles
or
ducts
that
cover
the
microprocessor.
3.
Disconnect
the
heat
sink
fan
cable
from
the
system
board.
Refer
to
“Identifying
parts
on
the
system
board”
on
page
124.
Chapter
10.
Replacing
FRUs
(Types
8084,
8085,
8147,
8148,
and
8179
129