Sharp LC-46LE700E Handy Guide ▷ View online
Electrical Adjustments
Version 1.1
Issue 07/2010
25
SHARP ELECTRONICS (UK) LTD
CE TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
Electrical Adjustments
Version 1.1
Issue 07/2010
26
SHARP ELECTRONICS (UK) LTD
CE TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
Product Safeguards
Version 1.1
Issue 07/2010
27
SHARP ELECTRONICS (UK) LTD
CE TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
Precautions for using lead-free solder
1
Employing lead-free solder
"Input, Output, R/C Receiver, Key and Fan PWB" 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 of lead-free solder.
Example:
Indicates lead-free solder of tin, silver and copper.
2
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 damage or accident due to cracks.
As the melting point of lead-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 ranch in your
area.
3
Soldering
As the melting point of lead-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 wettabillty, 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 of it.
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
Part No.
Description
ZHNDAi123250E
φ0.3mm 250g(1roll)
ZHNDAi126500E
φ0.6mm 500g(1roll)
ZHNDAi12801KE
φ1.0mm 1kg(1roll)
Notes
Version 1.1
Issue 07/2010
28
SHARP ELECTRONICS (UK) LTD
CE TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
Click on the first or last page to see other LC-46LE700E service manuals if exist.