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The switches will seat in the Display PCB more easily if you let the LEDs float out slightly
above the top of the switch while inserting. Once you have fully inserted the contact leads and
the two locating tabs on each switch, the LEDs should line up with their mounting holes and you
should be able to press them into place. You may find it easier to install the top row of switches
first.
Note – The PCB pads for the switches are snug intentionally to help maintain the alignment of
the switches. However, you may want to apply pressure to the front of each switch when
soldering the first two connections to ensure that the switch is fully seated.
Do not install the ICs or 7-Segment LEDs on the Display Board at this time.
Figure 1 – Assembled Display Board – Component Side
(Shown with all components inserted –
(Note - Your MB-1 is shipped with a grey switch for the top right position
(Display/Set-Up switch) in place of the black switch shown above).
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