C Control PRO-BOT128 + C-Control PRO 128 Unit + Voltcraft® USB programming cable Kit 190406 User Manual
Product codes
190406
16
b) Producing a clean welding spot
With the help of a suitable tool, you can bend the pins in such a way that they
will fit exactly into the corresponding holes (use bending tools, for example).
will fit exactly into the corresponding holes (use bending tools, for example).
These twist the pins by approx. 40° so that the parts do not drop out when
turning the circuit board over.
turning the circuit board over.
Now place the tip of the soldering iron and the tip of the solder directly on the
pin and the soldering pad on the circuit board. The solder begins to melt and
coves the pin of the part as well as the contact surface on the circuit board.
pin and the soldering pad on the circuit board. The solder begins to melt and
coves the pin of the part as well as the contact surface on the circuit board.
If you do not use enough solder, the contact is not adequate. If you use too
much solder, you create a "blob" that may also lead to short circuits with
neighbouring components.
much solder, you create a "blob" that may also lead to short circuits with
neighbouring components.
Experts need one to two seconds for a clean welding spot!
When pinching off the excess wire, make sure that the "flying" wire pieces cannot harm anyone (they might hurt your eye when
cutting them off!).
cutting them off!).
c) Removing wrongly installed parts by means of soldering
If you accidentally soldered a part wrongly despite several checks prior to soldering, you can suck off the solder e.g. with an unsoldering set to
remove the part.
remove the part.
Place the unsoldering set on the soldering spot as shown in the image on the left. Then heat up the unsoldering set and the soldering spot at the
same time from the top.
same time from the top.
Make sure to not heat this up too long (at most 5 seconds), otherwise the part may be damaged. Soldering out a part is very critical
for the part. The same applies for the circuit board.
for the part. The same applies for the circuit board.
If the solder was not properly suctioned off yet, cut off the tip of the unsoldering tool (which is already full of solder) and start again.
Once the solder is sucked off, remove the unsoldering tool and the soldering iron from the soldering spot. Now you can carefully move the pin
back and forth with a pointed pair of pliers so it becomes unstuck from the solder residues in the hole of the circuit board. Do not use any force!
This may damage the circuit board!
back and forth with a pointed pair of pliers so it becomes unstuck from the solder residues in the hole of the circuit board. Do not use any force!
This may damage the circuit board!
For components with only two pins (e.g. resistor), you can also heat the solder on both pins and then pull it off carefully from the top with a pair
of pliers. The solder in the soldering pad on the circuit board can then be removed with an unsoldering set.
of pliers. The solder in the soldering pad on the circuit board can then be removed with an unsoldering set.