1-10. Lead-free Solder
All boards mounted in this unit use lead-free solder. Be sure to use lead-free solder when repairing the boards of this
unit. A lead free mark (LF) indicating that the solder contains no lead is printed on each board. (Caution: Some printed
circuit boards may not come printed with the lead free mark due to their particular size.)
: LEAD FREE MARK
Note
• The lead-free solder melts at a temperature about 40 °C higher than the ordinary solder, therefore, it is recommended
to use the soldering iron having a temperature regulator.
• The ordinary soldering iron can be used but the iron tip has to be applied to the solder joint for a slightly longer
time. The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful.
HDC4300
1-22
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