3
Tips
•
When breaking the individual PCBs free from the panel, be careful to avoid
damage to the tabs for fitting PCBs 1, 3, 5, 6 and 7 to the component PCB.
We recommend using a coping saw to cut these PCBs free from the panel.
PCBs 2 and 4 can be broken free by hand. The tabs on these PCBs must be
removed (e.g. by filing them off).
However, do not do this until
instructed to do so.
•
There are several solder connections between the various PCBs. Be sure to
make these connections during assembly.
•
Apply solder sparingly, especially on the board fitted with the headset
connector. Proper assembly of the PCBs may be difficult if the solder layer
is too thick.
•
The antenna is electrically connected to the circuit. To avoid the risk of
electrical shock, always ensure that the antenna is properly insulated.
Soldering SMDs
We recommend soldering the SMD components in the TAPIR kit one at a time.
It’s easy to get them confused, and they are so small that they can easily get
lost if they are loose on the work surface.
Start by tinning one of the solder pads. Hold the solder against the pad and
briefly touch it with the tip of the soldering iron as close to the pad as possible,
so that the pad is covered by a thin layer of solder. Then place the component in
position. This is best done with tweezers. Secure the component with the
tweezers if necessary, and then shortly touch the tinned solder pad with the tip
of the soldering iron. The solder will reflow and form a bond between the
component and the solder pad. If the component is properly positioned, the rest
of the component leads can be then soldered by holding the solder against the
solder pad and the component lead and briefly heating the joint. Short soldering
times produce clean and tidy joints.
