Distinction Of Pbf Pcb; Parental Control - Rating Level; About Lead Free Solder (Pbf) - Sharp LC-32AD5E-BK Service Manual

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ABOUT LEAD FREE SOLDER (PbF)

Distinction of PbF PCB:

PCBs (manufactured) using lead free solder will have a PbF printing on the PCB.
(Please refer to figures.)
Caution:
Pb free solder has a higher melting point than standard solder;
Typically the melting point is 86°F~104°F(30°C~40°C) higher.
Please use a soldering iron with temperature control and adjust it to 650°F ± 20°F (350°C ± 10°C).
In case of using high temperature soldering iron, please be careful not to heat too long.
Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).
All products with the printed circuit board with PbF printing must be serviced with lead free solder.
When soldering or unsoldering, completely remove all of the solder from the pins or solder area,
and be sure to heat the soldering points with the lead free solder until it melts sufficiently.
Recommendations
Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.

PARENTAL CONTROL - RATING LEVEL

If the stored 4 digit password in the Rating Level menu needs to be cancelled, please follow the steps below.
1.
Turn on the power.
2.
Set the VOLUME to minimum.
3.
Press both VOL. DOWN button on the set and Channel button (3) on the remote control for more than 2
seconds.
4.
The 4 digit password has naw been cancelled.
NOTE:
No indications on the screen when the Parental Lock is setting.
Initializing password is 0000.
4 DIGIT PASSWORD CANCELLATION
A1-3

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