How To Replace Aflat Package Ic; Preparation; Procedure; Removing Solder From Between Pins - Panasonic KX-TG2343F Service Manual

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22 HOW TO REPLACE A

FLAT PACKAGE IC

• • • • PbF (: Pb free) Solder

• • • • Soldering Iron

Tip Temperature of 662°F ± 50°F (350°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.4).

1. Tack the flat pack IC to the PCB by temporarily soldering

two diagonally opposite pins in the correct positions on the

PCB.

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.

KX-TG2343F / KX-TG2343P / KX-TG2343W / KX-TGA233F / KX-TGA233P / KX-TGA233W

22.3. 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.

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Troubleshooting

Kx-tg2343p Kx-tg2343w Kx-tga233f Kx-tga233p Kx-tga233w