[ Problem Point ]
We have no idea about how to lead-free soldering of printed circuit boards.
[ ⇒Kaizen Point ]
The point was heated by the small type of the Halogen Point Heater.
Elevating the temperature time is short,
it worked so easy soldering temperature control.
Since the heating point, with minimal thermal stress to other parts.
Related page:
No.2 Preheat of printed circuit boards 
No.4 Reflow of printed circuit boards 
No.16 Soldering of printed circuit board 
No.2 Preheating of the printed circuit board 
No.75 Aging of Printed Circuit Board 
Uniform heating of Printed Circuit Boards 
No.13 Flow and reflow soldering process for printed circuit board, masking the Gold Plate Contact 
No.29 Preheating of printed circuit board