General Guidance An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. If any fuse or Fusible Resistor in this TV receiver is blown, replace it with the specified. When replacing a high wattage resistor Oxide Metal Film Resistor, over 1W , keep the resistor 10mm away from PCB. General Servicing Precautions 1. Always unplug the receiver AC power cord from the AC power source before; a. Removing or reinstalling any component, circuit board module or any other receiver assembly. Disconnecting or reconnecting any receiver electrical plug or other electrical connection. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver. A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device DVM, FETVOM, etc equipped with a suitable high voltage probe. Do not test high voltage by "drawing an arc". Do not spray chemicals on or near this receiver or any of its assemblies. This is a flammable mixture. Unless specified otherwise in this service manual, lubrication of contacts in not required. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last. Use with this receiver only the test fixtures specified in this service manual. Do not connect the test fixture ground strap to any heat sink in this receiver. Service Handbuch Schaltungen Reparaturanleitung Bedienungsanleitungen kostenlos pdf download. Schema di servizio manuale circuito schema elettrico schema di riparazione di istruzioni guida manuale pdf gratuito scaricare. Schema service manual schema bedrading schema reparatie gebruiksaanwijzing handleiding gratis pdf te downloaden. Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS of this publication. Keep wires away from high voltage or high temperature parts.
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