Lenovo ThinkCentre M55e Hardware Maintenance Manual - Page 119

Replacing, power, button, assembly

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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 83. 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 85. Note: Make sure you note the location of the power button and LED assembly cable when you disconnect it from the system board. 5. Lift the tab and slide the power button and LED assembly 1 out of the chassis. 6. Install the new power button and LED assembly and reconnect the power button and LED assembly cable. 7. Lower the drive bay assembly. 8. Go to "Completing the FRU replacement" on page 114. Chapter 8. Replacing FRUs 113

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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
83.
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
85.
Note:
Make
sure
you
note
the
location
of
the
power
button
and
LED
assembly
cable
when
you
disconnect
it
from
the
system
board.
5.
Lift
the
tab
and
slide
the
power
button
and
LED
assembly
±1²
out
of
the
chassis.
6.
Install
the
new
power
button
and
LED
assembly
and
reconnect
the
power
button
and
LED
assembly
cable.
7.
Lower
the
drive
bay
assembly.
8.
Go
to
“Completing
the
FRU
replacement”
on
page
114.
Chapter
8.
Replacing
FRUs
113