Lenovo ThinkCentre M50e Hardware Maintenance Manual - Page 118

Removing, replacing, system, board

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5. Install the new power supply and insert the four screws that hold the power supply in place. 6. Reconnect all power supply cables to the system board and the drives. See "Identifying parts on the system board" on page 108. 7. Go to "Installing the cover and connecting cables" on page 116. Removing and replacing the system board 1. Remove the cover. See "Removing the cover" on page 106. 2. Remove any PCI adapters installed. See "Removing and replacing a PCI adapter" on page 110. 3. Carefully take note of the location of all cable connections on the system board. It will be necessary to reconnect them properly when installing a new system board. See "Identifying parts on the system board" on page 108. 4. Disconnect all cables connected to the system board. 5. Remove the screws that secure the system board in place and remove the system board. 6. 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 109. 7. Remove the heat sink and microprocessor from the failing system board and install them on the new system board. See "Removing and replacing the 112 Hardware Maintenance Manual

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5.
Install
the
new
power
supply
and
insert
the
four
screws
that
hold
the
power
supply
in
place.
6.
Reconnect
all
power
supply
cables
to
the
system
board
and
the
drives.
See
“Identifying
parts
on
the
system
board”
on
page
108.
7.
Go
to
“Installing
the
cover
and
connecting
cables”
on
page
116.
Removing
and
replacing
the
system
board
1.
Remove
the
cover.
See
“Removing
the
cover”
on
page
106.
2.
Remove
any
PCI
adapters
installed.
See
“Removing
and
replacing
a
PCI
adapter”
on
page
110.
3.
Carefully
take
note
of
the
location
of
all
cable
connections
on
the
system
board.
It
will
be
necessary
to
reconnect
them
properly
when
installing
a
new
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
108.
4.
Disconnect
all
cables
connected
to
the
system
board.
5.
Remove
the
screws
that
secure
the
system
board
in
place
and
remove
the
system
board.
6.
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
109.
7.
Remove
the
heat
sink
and
microprocessor
from
the
failing
system
board
and
install
them
on
the
new
system
board.
See
“Removing
and
replacing
the
112
Hardware
Maintenance
Manual