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INSTALLATION
1. Take care of the polarity of new IC and then install the new IC
fitting on the printed circuit pattern. Then solder each lead on the
diagonal positions of IC temporarily.
(Refer to Fig. 4-5.)
Soldering Iron
Solder temporarily
2. Supply the solder from the upper position of IC leads sliding to
the lower position of the IC leads.
(Refer to Fig. 4-6.)
Solder
IC
Supply soldering
from upper position
to lower position
3. Absorb the solder left on the lead using the Braided Shield Wire.
(Refer to Fig. 4-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
Braided Shield Wire
4. When bridge-soldering between terminals and/or the soldering
amount are not enough, resolder using a Thintip Soldering Iron.
(Refer to Fig. 4-8.)
5. Finally, confirm the soldering status on four sides of the IC using
a magnifying glass.
Confirm that no abnormality is found on the soldering position
and installation position of the parts around the IC. If some
Solder temporarily
abnormality is found, correct by resoldering.
Fig. 4-5
NOTE
Soldering Iron
Fig. 4-6
IC
Fig. 4-7
No. 52133
Thin-tip Soldering Iron
When the IC leads are bent during soldering and/or repairing,
do not repair the bending of leads. If thebending of leads are
repaired, the pattern may be damaged. So, be always sure to
replace the IC in this case.
AV-20FD24
IC
Fig. 4-8
15
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