1 Service Navigation 1.1 General Description About Lead Free Solder (PbF) The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation. The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin (Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30°C (86°F) more than that of the normal solder.
1.2 Solder the Lead Wire 1. There is a blue or red mark on speaker. Confirm mark color (blue or red) and use the same color mark speaker for repair. [Caution] If you use a speaker with different color mark, the sound balance will not match. 2.