Lenovo ThinkSystem ST50 V2, Руководство по обслуживанию

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CAUTION:
Never remove the cover on a power supply or any part that has this label attached. Hazardous voltage,
current, and energy levels are present inside any component that has this label attached. There are no
serviceable parts inside these components. If you suspect a problem with one of these parts, contact
a service technician.
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 bay 1 drive cage and bay 2 drive cage (if applicable), see “Simple-swap drive and
drive cage (bay 1-2) replacement” on page 50 .
Step 2. Disconnect the power supply unit cable from the system board.
Step 3. From the outside of the chassis, remove the four screws that secure the power supply unit to the
chassis.
Chapter 3
.
Hardware replacement procedures
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