Haier 21F3A-T Service Manual

Also see for 21F3A-T: Owner's manual Specifications

Contents

Haier 21F3A-T Service Manual Manual pdf 6 page image

4.Safety PrecautionsIMPORTANT SAFETY NOTICEMany electrical identify these parts and mechanical parts in this chassis have specialsafety-related characteristics! In the Schematic Diagram and Replacement Parts List.It is essential that these special safety parts should be replaced with the same components asrecommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.Do not modify the original design without permission of the manufacturer.General GuidanceAn Isolation Transformer should always be used during the servicing of a receiver whosechassis is not isolated from the AC power line. Use a transformer of adequate power rating asthis protects the technician from accidents that might result in personal injury caused byelectrical shocks.It will also protect the receiver and it’s components from being damaged by accidental shorts ofthe circuitry that might be inadvertently introduced during the service operation.If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with a specified one.When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor10mm away from PCB.Keep wires away from high voltage or high temperature parts.Due to the high vacuum and large surface area of the picture tube, extreme care should betaken in handling the Picture Tube. Do not lift the Picture Tube by its Neck.X-RAY RadiationWarning:The source of X-RAY RADIATION in this TV receiver is the High Voltage Section and thePicture Tube.For continued X-RAY RADIATION protection, the replacement tube must be of the same typeas specified in the Replacement Parts List.Before returning the receiver to the customer,Always perform an AC leakage current check on the exposed metallic parts of the cabinet,such as antennas, terminals, etc., to make sure that the set is safe to operate without anydanger of electrical shock.Safety PrecautionsSafety Precautions5