DV-S15 (serv.man18). Complete - Sharp DVD Service Manual (repair manual). Page 7

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DVD_NOTE

(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 " 

   " mark.

Presolder

CBA

Flat Pack-IC

Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by electrostatic
charge during unpacking or repair work.

Be sure to wear a grounding band (1M

Ω) that is properly

grounded to remove any static electricity that may be
charged on the body.

Be sure to place a conductive sheet or copper plate with
proper grounding (1M

Ω) on the workbench or other

surface, where the semi-conductors are to be placed.
Because the static electricity charge on clothing will not
escape through the body grounding band, be careful to
avoid contacting semi-conductors with your clothing.

CBA

CBA

Grounding Band

Conductive Sheet or
Copper Plate