TY-FB7HD - Panasonic TV Service Manual (repair manual). Page 9

 

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such 
components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES 
devices are integrated circuits and some field-effect transistorsand semiconductor "chip" components. 
The following techniques should be used to help reduce the incidence of component damage caused 
by electro static discharge (ESD).

1.  Immediately before handling any semiconductor component or semiconductor-equipped 

assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, 
obtain and wear a commercially available discharging ESD wrist strap, whichshould be 
removed for potential shock reasons prior to applying power to the unit under test.

2.  After removing an electrical assembly equipped with ES devices, place the assembly on a 

conductive surface such as alminum foil, to prevent electrostatic charge buildup or exposure 
of the assembly.

3.  Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4.  Use only an anti-static solder removal device. Some solder removal devices not classified as 

"anti-static (ESD protected)" can generate electrical charge sufficient to damage ES devices.

5.  Do not use freon-propelled chemicals. These can generate electrical charges sufficient to 

damage ES devices.

6.  Do not remove a replacement ES device from its protective package until immediately before 

you are ready to install it. (Most replacement ES devices are packaged with leads electrically 
shorted together by conductive foam, alminum foil or comparableconductive material).

7.  Immediately before removing the protective material from the leads of a replacement ES 

device, touch the protective material to the chassis or circuit assembly into which the device 
will be installed.

Caution

 

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8.  Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise 

hamless motion such as the brushing together of your clothes fabric or the lifting of your foot