QRP Labs QCX-mini, Assembly Instructions Manual

Page: 71 / 133

3.35 Install 2x4-pin male header on controls PCB
Vient ensuite l'assemblage du circuit imprimé de commande, qui contient le contrôle de
gain, l'encodeur rotatif (réglage de la fréquence) et les deux boutons de commutation
tactiles.
L'embase 2x4 broches doit être installée avec le petit circuit imprimé d'espacement pris en
sandwich entre le corps du connecteur et la face inférieure du circuit imprimé. Suivez
attentivement les étapes ci-dessous pour installer cette partie
Thread the small spacer PCB having 8
matching holes, onto the short-pin side of
the 2x4-pin header. Insert the remaining length of the short pins
into the PCB from the under-side, as shown.
The pins don’t protrude from the top side of
the holes. However the holes are through-
hole plated. Be generous with the solder,
and apply heat to the hole for at least 5
seconds to ensure the solder flows down
inside the hole and makes a good
connection to the pin. Likewise, solder the remaining seven pins.
Don’t worry, this method really does work
reliably; just ensure the soldering iron is
poked into the hole if possible and apply
heat for at least 5 seconds on each joint,
and plenty of solder.
QCX-mini assembly Rev 1.05_Fr
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