Lenovo ThinkCentre M51 Hardware Maintenance Manual - Page 163

Removing, replacing, internal, speaker, power, button, assembly

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Removing and replacing the internal speaker 1. Turn off the computer and disconnect the power cord from the electrical outlet and from the computer. 2. Open the cover. See "Opening the cover" on page 138. 3. Rotate the drive bay assembly upward to gain access to the speaker. 4. Locate the speaker 1 . 5. Disconnect the speaker cable from the system board. See "Identifying parts on the system board" on page 140. Note: Make sure you note the location of the speaker cable when you disconnect it from the system board. 6. Remove the speaker by sliding the it upward and out of the retaining bracket. Note: You may need to slightly flex the side of the computer to aide in removing the speaker. 7. Install the new speaker and reconnect the speaker cable. 8. Lower the drive bay assembly. 9. Replace the cover, and connect the cables. See "Closing the cover and connecting cables" on page 159. Removing and replacing the power button and LED assembly 1. Turn off the computer and disconnect the power cord from the electrical outlet and from the computer. 2. Open the cover. See "Opening the cover" on page 138. 3. Rotate the drive bay assembly upward to gain access to the power button and LED assembly. 4. Disconnect the power button and LED assembly cable from the system board. See "Identifying parts on the system board" on page 140. Chapter 10. Replacing FRUs (Types 8098, 8171, 8172, 8173, 8424, and 8425) 157

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Removing
and
replacing
the
internal
speaker
1.
Turn
off
the
computer
and
disconnect
the
power
cord
from
the
electrical
outlet
and
from
the
computer.
2.
Open
the
cover.
See
“Opening
the
cover”
on
page
138.
3.
Rotate
the
drive
bay
assembly
upward
to
gain
access
to
the
speaker.
4.
Locate
the
speaker
±1²
.
5.
Disconnect
the
speaker
cable
from
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
140.
Note:
Make
sure
you
note
the
location
of
the
speaker
cable
when
you
disconnect
it
from
the
system
board.
6.
Remove
the
speaker
by
sliding
the
it
upward
and
out
of
the
retaining
bracket.
Note:
You
may
need
to
slightly
flex
the
side
of
the
computer
to
aide
in
removing
the
speaker.
7.
Install
the
new
speaker
and
reconnect
the
speaker
cable.
8.
Lower
the
drive
bay
assembly.
9.
Replace
the
cover,
and
connect
the
cables.
See
“Closing
the
cover
and
connecting
cables”
on
page
159.
Removing
and
replacing
the
power
button
and
LED
assembly
1.
Turn
off
the
computer
and
disconnect
the
power
cord
from
the
electrical
outlet
and
from
the
computer.
2.
Open
the
cover.
See
“Opening
the
cover”
on
page
138.
3.
Rotate
the
drive
bay
assembly
upward
to
gain
access
to
the
power
button
and
LED
assembly.
4.
Disconnect
the
power
button
and
LED
assembly
cable
from
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
140.
Chapter
10.
Replacing
FRUs
(Types
8098,
8171,
8172,
8173,
8424,
and
8425)
157