Lenovo ThinkCentre M51 Hardware Maintenance Manual - Page 107

Removing, replacing, system, board

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* XXXXXXXXX* * XXXXXXXXX* 7. Install the new power supply assembly into the chassis so that the screw holes in the power supply assembly align with those in the chassis. Note: Use only the screws provided by Lenovo. 8. Install and tighten the four power supply assembly screws into the rear of the chassis. 9. Reconnect all the power supply cables to the drives and to the system board. 10. To complete the installation, go to "Closing the cover and connecting cables" on page 113. Removing and replacing the system board 1. Remove the cover. See "Removing the cover" on page 92. 2. Remove any PCI adapters. See "Removing and replacing a PCI adapter" on page 97. 3. Carefully note the location of all cable connections on the system board. It will be necessary to reconnect them properly when installing a new system board. 4. Disconnect all cables connected to the system board. See "Identifying parts on the system board" on page 95. 5. Remove the seven screws that attach the system board to the chassis and slide the system board toward the front of the computer and carefully lift it out. Chapter 8. Replacing FRUs (Types 8095, 8141, 8142, 8145, 8420, and 8421) 101

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7.
Install
the
new
power
supply
assembly
into
the
chassis
so
that
the
screw
holes
in
the
power
supply
assembly
align
with
those
in
the
chassis.
Note:
Use
only
the
screws
provided
by
Lenovo.
8.
Install
and
tighten
the
four
power
supply
assembly
screws
into
the
rear
of
the
chassis.
9.
Reconnect
all
the
power
supply
cables
to
the
drives
and
to
the
system
board.
10.
To
complete
the
installation,
go
to
“Closing
the
cover
and
connecting
cables”
on
page
113.
Removing
and
replacing
the
system
board
1.
Remove
the
cover.
See
“Removing
the
cover”
on
page
92.
2.
Remove
any
PCI
adapters.
See
“Removing
and
replacing
a
PCI
adapter”
on
page
97.
3.
Carefully
note
the
location
of
all
cable
connections
on
the
system
board.
It
will
be
necessary
to
reconnect
them
properly
when
installing
a
new
system
board.
4.
Disconnect
all
cables
connected
to
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
95.
5.
Remove
the
seven
screws
that
attach
the
system
board
to
the
chassis
and
slide
the
system
board
toward
the
front
of
the
computer
and
carefully
lift
it
out.
Chapter
8.
Replacing
FRUs
(Types
8095,
8141,
8142,
8145,
8420,
and
8421)
101