Lenovo 7D2F, Maintenance Manual

Page: 141 / 188

Remove the top cover
Follow the instructions in this section to remove the top cover.
S014
CAUTION:
Hazardous voltage, current, and energy levels might be present. Only a qualified service technician is
authorized to remove the covers where the label is attached.
S033
CAUTION:
Hazardous energy present. Voltages with hazardous energy might cause heating when shorted with
metal, which might result in spattered metal, burns, or both.
Before removing the top cover:
1. Read the safety information and installation guidelines (see “Safety” on page iii and “Installation
Guidelines” on page 49 ).
2. Turn off the server and peripheral devices and disconnect the power cords and all external cables (see
“Power off the server” on page 11 ).
3. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top
cover, or remove the server from the rack.
4.
Watch the procedure
A video of this procedure is available at YouTube: https://www.youtube.com/playlist?list=
PLYV5R7hVcs-B2y7oAb54mfyuLrIusa_qE .
5. Remove the top cover (see “Remove the top cover” on page 133 ).
To remove the top cover, complete the following steps:
Step 1. Unlock the cover release latch with a flat-end screwdriver.
Figure 127. Lock on the top cover latch
Table 42. Lock/unlock directions on the top cover latch
1
Unlock
2
Lock
Chapter 3
.
Hardware replacement procedures
133