Sharp DV-NC150U Service Manual page 10

(4) Bottom of the flat pack-IC is fixed with glue to the
CBA; 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. S-1-6)
(5) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6)
Note:
When using a soldering iron, care must be taken to
ensure that the flat pack-IC is not being held by glue.
When the flat pack-IC is removed from the CBA,
handle it gently because it may be damaged if force
is applied.
To Solid
Mounting Point
CBA
Tweezers
Hot Air Blower
or
Iron Wire
Soldering Iron
Fig. S-1-5
Fine Tip
Soldeing Iron
Flat Pack-IC
Fig. S-1-6
2. Installation
(1) Using desoldering braid, remove the solder from the
foil of each pin of the flat pack-IC on the CBA so you
can install a replacement flat pack-IC more easily.
(2) The " " mark on the flat pack-IC indicates pin 1. (See
Fig. S-1-7.) Be sure this mark matches the 1 on the
PCB when positioning for installation. Then presol-
der the four corners of the flat pack-IC. (See Fig. S-
1-8.)
(3) Solder all pins of the flat pack-IC. Be sure that none
of the pins have solder bridges.
Example :
Pin 1 of the Flat Pack-IC
is indicated by a "
CBA
1-4-3
" mark.
Fig. S-1-7
Presolder
Flat Pack-IC
Fig. S-1-8
DVD_NOTE2