Sharp MX-2310U Installation Manual - Page 74
Lead-free Solder, Note For The Use Of Lead-free Solder Thread, Note For Soldering Work, Example
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LEAD-FREE SOLDER The PWB's of this model employs lead-free solder. The "LF" marks indicated on the PWB's and the Service Manual mean "Lead-Free" solder. The alphabet following the LF mark shows the kind of lead-free solder. Example: 5mm Lead-Free Solder composition code (Refer to the table at the right.) a Solder composition Sn-Ag-Cu Sn-Ag-Bi Sn-Ag-Bi-Cu Sn-Zn-Bi Sn-In-Ag-Bi Sn-Cu-Ni Sn-Ag-Sb Bi-Sn-Ag-P Bi-Sn-Ag Solder composition code a b z i n s p (1) NOTE FOR THE USE OF LEAD-FREE SOLDER THREAD When repairing a lead-free solder PWB, use lead-free solder thread. Never use conventional lead solder thread, which may cause a breakdown or an accident. Since the melting-point of lead-free solder thread is about 40°C higher than that of conventional lead solder thread, the use of the exclusive-use soldering iron is recommended. (2) NOTE FOR SOLDERING WORK © Since the melting-point of lead-freeCsoOldPerYisRabIGouHt 2T20°C, wXhXicXh Xis aBboYuSt 4H0A°CRhiPgheCr OthaRnPthOatRofAcoTnIvOenNtional lead solder, and its soldering capacity is inferior to conventional one, it is apt to keep the soldering iron in contact with the PWB for longer time. This may cause land separation or may exceed the heat-resistive temperaAtuLreLofRcIoGmpHoTneSntsR. UEsSe EenRouVgEh cDa.re to separate the soldering iron from the PWB when completion of soldering is confirmed. Since lead-free solder includes a greater quantity of tin, the iron tip may corrode easily. Turn ON/OFF the soldering iron power frequently. If different-kind solder tip after completion of remains on the soldering work. solNdeoripngaritroonf tthipi,sitpiusbmlicealtetidontomgeatyhebrewritehplreoaddu-fcreeed,solder. To avoid this, clean the soldering iron If the soldering iron tip is discolored black sadtunoryirnefgodrsimonldaoerrriebntgyriweavnoarykl,mscyelesaatnensma,n,edolerficltertratohnnesimcti,pitmwteeitdhchisnateneilcwalo,ol or a fine filer. photocopying, recording, or otherwise, without prior written permission of the publisher.