(No.YA712<Rev.002>)1-5
2.2.3 HOW TO REMOVE / INSTALL FLAT PACK-IC
2.2.3.1 REMOVAL
WITH HOT-AIR FLAT PACK-IC DESOLDERING MACHINE:
(1) Prepare the hot-air flat pack-IC desoldering machine,
then apply hot air to the Flat Pack-IC (about 5 to 6
seconds). (Fig.2-1)
Fig.2-1
(2) Remove the flat pack-IC with tweezers while applying
the hot air.
(3) Bottom of the flat pack-IC is fixed with glue to the PWB;
when removing entire flat pack-IC, first apply soldering
iron to center of the flat pack-IC and heat up. Then
remove (glue will be melted). (Fig.2-6)
(4) Release the flat pack-IC from the PWB using tweezers.
(Fig.2-6)
CAUTION:
(1) The Flat Pack-IC shape may differ by models. Use an
appropriate hot-air flat pack-IC desoldering machine,
whose shape matches that of the Flat Pack-IC.
(2) Do not supply hot air to the chip parts around the flat
pack-IC for over 6 seconds because damage to the
chip parts may occur. Put masking tape around the flat
pack-IC to protect other parts from damage. (Fig.2-2)
(3) The flat pack-IC on the PWB is affixed with glue, so be
careful not to break or damage the foil of each pin or
the solder lands under the IC when removing it.
Fig.2-2
WITH SOLDERING IRON:
(1) Using desoldering braid, remove the solder from all pins
of the flat pack-IC. When you use solder flux which is
applied to all pins of the flat pack-IC, you can remove it
easily. (Fig.2-3)
Fig.2-3
(2) Lift each lead of the flat pack-IC upward one by one,
using a sharp pin or wire to which solder will not adhere
(iron wire). When heating the pins, use a fine tip
soldering iron or a hot air desoldering machine. (Fig.2-4)
Fig.2-4
(3) Bottom of the flat pack-IC is fixed with glue to the PWB;
when removing entire flat pack-IC, first apply soldering
iron to center of the flat pack-IC and heat up. Then
remove (glue will be melted). (Fig.2-6)
(4) Release the flat pack-IC from the PWB using tweezers.
(Fig.2-6)
Hot-air
Flat Pack-IC
Desoldering
Machine
CBA
Flat Pack-IC
Tweezers
Masking
Tape
Flat Pack-IC
Desoldering Braid
Soldering Iron
Fine Tip
Soldering Iron
Sharp
Pin
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