Mark Levinson Reference Preamplifier N32 - Manual (Page 17)

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11. Carefully lift connector ends of cables out of holes in phono
preamp top cover.
Being careful to avoid catching the connectors on the edges of the
slots in which they have been sitting during installation, set the
unattached ends of the ribbons cable free as shown below.
12. Plug all four cables from phono preamp modules into their
respective sockets on upper circuit board inside Nº32
Preamplifier.
Note that the connector will “click” when fully seated.
(all four connections)