Lenovo MT 1842 Manual page 118

Removing and replacing a FRU
For wireless models, release the antenna cables from the
cable guide 4 . For the other models, skip this step.
4
a
When installing: Make sure that the antenna cables and
(continued)
112
R50e and R52 Series
4
4
4
the two ferrite cores a and b (with
sponge) are correctly routed and
securely in place.
4
4
4
b
4
4