It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. This technique involves the installation of a jumper wire on the component side of the circuit board. An other abnormality exists that must be corrected before the receiver is returned to the customer.
Keep wires away from high voltage or high temperature parts. Insert new transistor in the circuit board. Connect insulated gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side.
Not always It is impossible to download by bar code scan, so It need Manual download. Not always There is impossible to download by bar code scan, so It need Manual download. Each model has their number.
Solder the overlapped area and clip off any excess jumper wire. These parts are identified by in the Schematic Diagram and Exploded View. Press Start connection key, then Network will be connected. Use the following soldering technique. However, the use of isolation transformer will help protect test instrument.
Quickly draw the melted solder with an anti-static, suctiontype solder removal device or with solder braid. Clean the soldered areas with a small wire-bristle brush.
Do not use freon-propelled chemicals. Do not connect the test fixture ground strap to any heat sink in this receiver. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks.
Allow the soldering iron tip to reach normal temperature. Resolution H-freq kHz V-freq.
Keep the soldering iron tip clean and well tinned. Work quickly to avoid overheating the circuit board printed foil.
If they are not shiny, reheat them and if necessary, apply additional solder. Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. Immediately before handling any semiconductor component or semiconductor-equipped assembly, parasitologia medica becerril pdf drain off any electrostatic charge on your body by touching a known earth ground.
First, hold the soldering iron tip and solder the strand against the component lead until the solder melts. This circuit is proprietary to Linear Technology and supplied. It is not necessary to reapply acrylic coating to the areas.
Removing or reinstalling any component, circuit board module or any other receiver assembly. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver.
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The following guidelines and procedures should be followed whenever this condition is encountered. It's a community-based project which helps to repair anything. When the exposed metal has no return path to the chassis the reading must be infinite. Do not use freon-propelled spray-on cleaners.
Solder each transistor lead, and clip off excess lead. This is a flammable mixture.
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Use the following unsoldering technique a. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board.
Leakage Current Hot Check circuit Keep wires away from high voltage or high temperature parts. In this case, you have to channel recover.
CI-LD7577 (U2 CDIGO 499532)
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