KV-SL1066-M2, KV-SL1066-U2, KV-SL1066-B2, KV-SL1066-K2, KV-SL1066-C2, KV-SL1066-CH, KV-SL1056-M2, KV-SL1056-U2, KV-SL1055-C2, KV-SL1055-CH, KV-SL1036-C2, KV-SL1055-CH, KV-SL1035-C2, KV-SL1055-CH — Panasonic Other Service Manuals Service Manual (repair manual). Page 6

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2 Warning
2.1.
Caution
The power socket wall outlet should be located near this equipment and be easily accessible.
2.2.
About Lead Free Solder (PbF: Pb free)
Note:
In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that con-
tains lead.
We will use PbF when discussing the lead free solder used in our manufacturing process which is made from Tin, (Sn), Silver,
(Ag), and Copper, (Cu).
This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder. 
Caution
• PbF solder has a melting point that is 50° ~ 70° F, (30° ~ 40°C) higher than Pb solder. Please use a soldering iron with tempera-
ture control and adjust it to 700° ± 20° F, (370° ± 10°C). 
Exercise care while using higher temperature soldering irons.
Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.
• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F, (600°C).
• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the
opposite side (See figure, below).
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