TA Triumph-Adler DC 6140L - Manual (Page 416)

Appendix-4
6 After you finish installing the memory module, secure the
memory slot cover with screws removed in step 3.
7 Reinstall the right cover.
Removing the Memory Module
To remove a memory module, remove the right cover and the
memory slot cover from the machine. Then, carefully push
out the two socket clamps. Ease the memory module out of
the socket to remove.
Verifying the expanded memory
To verify that the memory module is working properly, test it
by printing a status page.