Lenovo 9935B3U User Manual - Page 42

Replacing, internal, speaker

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5. Remove the two screws that secure the system fan assembly. 6. Remove the system fan assembly by pulling the bracket outward and lifting it up from the system board to remove completely. Figure 33. Removing the system fan assembly 7. Install a new system fan assembly and install the two screws that secure the system fan assembly. 8. Connect the system fan assembly cable to the system fan connector on the system board. 9. Reinstall the hard disk drive. 10. Go to "Completing the parts replacement" on page 37. Replacing the internal speaker Attention Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to: http://www.lenovo.com/support This section provides instructions on how to replace the internal speaker. To replace the internal speaker: 1. Remove the computer cover. See "Removing the computer cover" on page 14. 2. Remove the front bezel and drive bay assembly. See "Accessing the system board components and drives" on page 15. 3. You might have to remove the hard disk drive to gain easy access to the internal speaker. See "Replacing the hard disk drive" on page 26. 4. Locate the internal speaker connector on the system board. See "Locating parts on the system board" on page 11. 5. Disconnect the internal speaker cable from the system board. 34 User Guide

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5.
Remove
the
two
screws
that
secure
the
system
fan
assembly.
6.
Remove
the
system
fan
assembly
by
pulling
the
bracket
outward
and
lifting
it
up
from
the
system
board
to
remove
completely.
7.
Install
a
new
system
fan
assembly
and
install
the
two
screws
that
secure
the
system
fan
assembly.
8.
Connect
the
system
fan
assembly
cable
to
the
system
fan
connector
on
the
system
board.
9.
Reinstall
the
hard
disk
drive.
10.
Go
to
“Completing
the
parts
replacement”
on
page
37.
Replacing
the
internal
speaker
Attention
Do
not
open
your
computer
or
attempt
any
repair
before
reading
and
understanding
the
“Important
safety
information”
in
the
ThinkCentre
Safety
and
Warranty
Guide
that
came
with
your
computer.
To
obtain
a
copy
of
the
ThinkCentre
Safety
and
Warranty
Guide
,
go
to:
This
section
provides
instructions
on
how
to
replace
the
internal
speaker.
To
replace
the
internal
speaker:
1.
Remove
the
computer
cover.
See
“Removing
the
computer
cover”
on
page
14.
2.
Remove
the
front
bezel
and
drive
bay
assembly.
See
“Accessing
the
system
board
components
and
drives”
on
page
15.
3.
You
might
have
to
remove
the
hard
disk
drive
to
gain
easy
access
to
the
internal
speaker.
See
“Replacing
the
hard
disk
drive”
on
page
26.
4.
Locate
the
internal
speaker
connector
on
the
system
board.
See
“Locating
parts
on
the
system
board”
on
page
11.
5.
Disconnect
the
internal
speaker
cable
from
the
system
board.
Figure
33.
Removing
the
system
fan
assembly
34
User
Guide