Lenovo ThinkSystem ST50 V2, Руководство по обслуживанию

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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 and “Installation guidelines” on page 41 to ensure that you
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 9 .
• If the server is in a rack, remove it from the rack. See “Remove the server from the rails” on page 137 .
• 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: https://www.youtube.com/playlist?list=PLYV5R7hVcs-
AU3iY3F7lq3qfqr5caGbIu .
Procedure
Step 1. Make preparation for this task.
a. Remove the server cover, see “Remove the server cover” on page 143 .
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. Remove the front bezel. See “Remove the front bezel” on page 83 .
Step 2. Disconnect the power button cable from the system board.
Chapter 3
.
Hardware replacement procedures
87