Lenovo 7D8JA02GNA Maintenance Manual page 75

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S002
CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
About this task
Attention:
• Read
"Safety inspection checklist" on page iv
work safely.
• Turn off the server and peripheral devices, and disconnect the power cords and all external cables, see
"Power off the server" on page
• If the server is in a rack, remove it from the rack. See
• Remove any locking device that secures the server, such as a Kensington lock or a padlock.
• Place the server on its side with the cover up.
Watch the procedure
A video of this procedure is available at YouTube:
AU3iY3F7lq3qfqr5caGbIu
Procedure
Step 1.
Make preparation for this task.
a.
Remove the server cover, see
Note: The heat sink and processor could be very hot. To avoid burning yourself, wait for a few
minutes after turning off the server before you remove the server cover.
b.
If applicable, remove the optical drive, see
c.
Remove the optical drive cage, see
d.
If applicable, remove the 3.5-inch drive from the 3.5-inch drive cage, see
swap drive (bay 3)" on page
and
9.
.
"Remove the server cover" on page
"Remove the optical drive cage" on page
62.
"Installation guidelines" on page 41
"Remove the server from the rails" on page
https://www.youtube.com/playlist?list=PLYV5R7hVcs-
"Remove an optical drive" on page
.
Chapter 3
Hardware replacement procedures
to ensure that you
138.
144.
70.
76.
"Remove a simple-
67

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