Stereoping Synth Controller Building Instructions page 20

The two 4051-multiplexer have a notch on
one small side, like the sockets. The left 4051
will be put in place with the label reading
normally and it's notch to face to the left. The
4051 to the right will be turned upside down
like the optocoupler with it's notch pointing to
the right.
Put the chip into the socket until it is fully
down. If it won't want to glide into the socket
have a careful look, there might be a leg
screwed somehow and needs to be pulled
straight. You can get the chip out again with a
normal screwdriver levering it out repeatedly
from both small sides.
The pictures to the right show you how to do
it: bend the leg rows until the IC's legs
perfectly find their position above the sockets
holes. Then press from above onto the chip, it
should slide down 1 or 2 millimeters into the
jack. At the end it should look like in the lower
picture.
Building instructions 'Stereoping Synth Controller'
V1.6 - 09.2018
© Stereoping Germany, Meschede 2018