Toshiba 20A22 Руководство по эксплуатации - Страница 10
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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. 2-5.)
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. 2-6.)
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. 2-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
Braided Shield Wire
DISASSEMBLY INSTRUCTIONS
Solder temporarily
Fig. 2-5
Soldering Iron
Fig. 2-6
IC
Fig. 2-7
4.
When bridge-soldering between terminals and/or the
soldering amount are not enough, resolder using a Thin-tip
Soldering Iron. (Refer to Fig. 2-8.)
Thin-tip Soldering Iron
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 abnormality is found, correct by resoldering.
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, be always sure to replace the IC in this
case.
IC
Fig. 2-8