Quasar SP-2725F Service Manual

Contents

Quasar SP-2725F Service Manual Manual pdf 3 page image

- 3 -About lead free solder (PbF)Note: Lead is listed as (Pb) in the periodic table of elements.In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).That is Tin (Sn), Silver (Ag) and (Cu) although other types are available.This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. Forservice and repair work, we’d suggest the use of Pb free solder as well, although Pb solder may beused.PCBs manufactured using lead free solder will have the PbF within a leaf Symbol stamped on theback of PCB.Caution• Pb free solder has a higher melting point than standard solder. Typically the meltingpoint is 50 ~ 70 °F (30 ~ 40 °C) higher. Please use a high temperature soldering ironand set it to 700 ± 20 °F (370 ± 10 °C).• Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).If you must use Pb solder, please completely remove all of the Pb free solder on thepins or solder area before applying Pb solder. If this is not practical, be sure to heat thePb free solder until it melts, before applying Pb solder.• After applying PbF solder to double layered boards, please check the component sidefor excess solder which may flow onto the opposite side. (see figure below)Suggested Pb free solderThere are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu(tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) soldercan also be used.componentcomponentpinsolderexcess solderremove all of theslice view0.3mm X 100g 0.6mm X 100g 1.0mm X 100g