Panasonic KX-TG2448BXF Service Manual

Contents

1 ABOUT LEAD FREE SOLDER (PbF: Pb free)Note:In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder thatcontains lead.We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn),Silver (Ag), and Copper (Cu).This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repairwork we suggest using the same type of solder although, with some precautions, standard Pb solder can also be used.Caution•••• PbF solder has a melting point that is 50°F ~ 70° F (30°C ~ 40°C) higher than Pb solder. Please use a soldering iron withtemperature control and adjust it to 700°F ± 20° F (370°C ± 10°C). In case of using high temperature soldering iron, pleasebe careful not to heat too long.•••• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F (600°C).•••• If you must use Pb solder on a PCB manufactured using PbF solder, remove as much of the original PbF solder as possibleand be sure that any remaining is melted prior to applying the Pb solder.•••• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto theopposite side (See the figure below).1.1. Suggested PbF SolderThere are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper(Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu), or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check themanufacturer’s specific instructions for the melting points of their products and any precautions for using their product with othermaterials.The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.4KX-TG2448BXF / KX-TG2448BXS / KX-TGA254BXF / KX-TGA254BXS