Precautions For Using Lead-Free Solder; Employing Lead-Free Solder; Using Lead-Free Wire Solder; Soldering - Sharp LC-32LE265T Service Manual

LC-32LE265T / LC-40LE265T
PRECAUTION FOR USING LEAD-FREE SOL-
DER

PRECAUTIONS FOR USING LEAD-FREE SOLDER

Employing lead-free solder

• PWBs of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The
alphabetical character following LF shows the type oflead-free solder.
Example:
Indicates lead-free solder of tin, silver and copper.

Using lead-free wire solder

• When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause dam-
age or accident due to cracks.
As the melting point oflead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 C, we recommend you to use a dedicated soldering
bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

Soldering

• As the melting point oflead-free solder (Sn-Ag-Cu) is about 220 C which is higher than the conventional lead solder by 40 C, and as it has poor
solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be
peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the
steady soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as
required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use ofit.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
• Be careful when replacing parts with polarity indication on the PWB silk.
Lead-free wire solder for servicing
PARTS CODE
ZHNDAi123250E
ZHNDAi126500E
ZHNDAi12801KE
PRICE PART
DESCRIPTION
RANK DELIVERY
BL J 0.3mm 250g (1roll)
BK J 0.6mm 500g (1roll)
BM J 1.0mm 1kg (1roll)
Indicates lead-free solder of tin, silver and copper.
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