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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 
transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of 
component damage caused by electrostatic 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, which should 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 

aluminum foil, to prevent electrostatic charge build up 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, aluminum foil 
or comparable conductive 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 harmless motion such as the 

brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity 
(ESD) sufficient to damage an ES device). 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

There are special components used in this equipment which are important for safety. 
These parts are marked by      in schematic diagrams, exploded views and replacement parts list. It is essential that 
these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire, or other hazards. Do 
not modify the original design without permission of manufacturer. 

 

Note: Lead is listed as (Pb) in the periodic table of elements.

  

In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.

  

The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).

  

That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

  

 
This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, 
we’d suggest the use of Pb free solder as well, although Pb solder may be used. 
PCBs manufactured using lead free solder will have the PbF within a leaf Symbol  
 
             stamped on the back of PCB. 
 

 

Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40°C) 
higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C). 

 

Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C). 
If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before 
applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder. 

 

After applying PbF solder to double layered boards, please check the component side for excess solder which may 
flow onto the opposite side. (see Fig.3) 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. 
However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used. (see Fig.4) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

P-BOARD 

K-BOARD 

A-BOARD 

GK-BOARD 

A-Board 

AV Terminal, HDMI, USB, Digital Audio Out, Tuner DVB-T/T2/C, CI slot, 

 SD slot, Ethernet, Headphones, Wireless LAN, Peaks IC, Speaker out, Woofer, 

Flash Memory, DDR SDRAM 

P-Board 

Main Input, Power Supply 

K-Board 

Remote Receiver, Power and Timer  LED, C.A.T.S 

GK-Board 

Key control, Power switch 

Remove the 1 fixing screw and WIFI DONGLE. (see Fig.5) 

 
 
 

 

 
 
Remove the 27 fixing screws, 4 caps and the backcover. (see Fig.6)

Lay the main unit face down. (see Fig.7) 
Remove the 4 fixing screws, stand cover assy and the pedestal assembly. (see Fig.8)