Panasonic BL-C111A Service Manual - Page 39
How to Replace a Flat Package IC
UPC - 037988845149
View all Panasonic BL-C111A manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 39 highlights
8.16. How to Replace a Flat Package IC BL-C111A/BL-C131A 8.16.1. Preparation • PbF (: Pb free) Solder • Soldering Iron Tip Temperature of 700°F ± 20°F (370°C ± 10°C) Note: We recommend a 30 to 40 Watt soldering iron. An expert may be able to use a 60 to 80 Watt iron where someone with less experience could overheat and damage the PCB foil. • Flux Recommended Flux: Specific Gravity → 0.82. Type → RMA (lower residue, non-cleaning type) Note: See About Lead Free Solder (PbF: Pb free) (P.3). 8.16.2. Procedure 1. Tack the flat pack IC to the PCB by temporarily soldering two diagonally opposite pins in the correct positions on the PCB. 8.16.3. Removing Solder from Between Pins 1. Add a small amount of solder to the bridged pins. 2. With a hot iron, use a sweeping motion along the flat part of the pin to draw the solder from between the adjacent pads. Be certain each pin is located over the correct pad on the PCB. 2. Apply flux to all of the pins on the IC. 3. Being careful to not unsolder the tack points, slide the soldering iron along the tips of the pins while feeding enough solder to the tip so that it flows under the pins as they are heated. 39