Электросхема микроволновой печи

СВЧ печи Схема СВЧ печи Samsung M1974R

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1. Precaution1-1 Safety precautions ( )Samsung Electronics1. All repairs should be done in accordancewith the procedures described in thismanual. This product complies withFederal Performance Standard 21 CFR Subchapter J (DHHS). 2. Microwave emission check should beperformed to prior to servicing if the oven isoperative.3. If the oven operates with the door open :Instruct the user not to operate the oven andcontact the manufacturer and the center fordevices and radiological health immediatly.4. Notify the Central Service Center if themicrowave leakage exceeds 5 mW/cm5. Check all grounds. 6. Do not power the MWO from a «2-prong»AC cord. Be sure that all of the built-inprotective devices are replaced. Restore anymissing protective shields.7. When reinstalling the chassis and itsassemblies, be sure to restore all protectivedevices, including: nonmetallic controlknobs and compartment covers.8. Make sure that there are no cabinet openingsthrough which people—particularlychildren—might insert objects and contactdangerous voltages. Examples: Lamp hole,ventilation slots. 9. Inform the manufacturer of any oven foundto have emmission in excess of 5 mW/cmMake repairs to bring the unit intocompliance at no cost to owner and try todetermine cause.Instruct owner not to use oven until it hasbeen brought into compliance.CENTRAL SERVICE CENTER10. Service technicians should remove theirwatches while repairing an MWO.11. To avoid any possible radiation hazard,replace parts in accordance with the wiringdiagram. Also, use only the exactreplacements for the following parts:Primary and secondary interlock switches,interlock monitor switch. 12. If the fuse is blown by the Interlock MonitorSwitch: Replace all of the following at thesame time: Primary, door sensing switchand power relay, as well as the InterlockMonitor Switch. The correct adjustment ofthese switches is described elsewhere in thismanual. Make sure that the fuse has thecorrect rating for the particular model beingrepaired.13. Design Alteration Warning:Use exact replacement parts only, i.e.,only those that are specified in thedrawings and parts lists of this manual.This is especially important for theInterlock switches, described above.Never alter or add to the mechanical orelectrical design of the MWO. Any designchanges or additions will void themanufacturer’s warranty.10.Always unplugthe unit’s AC power cord from the ACpower source before attempting toremove or reinstall any component orassembly.14. Never defeat any of the B+ voltageinterlocks. Do not apply AC power to theunit (or any of its assemblies) unless allsolid-state heat sinks are correctly installed.15. Some semiconductor («solid state») devicesare easily damaged by static electricity. Suchcomponents are called ElectrostaticallySensitive Devices (ESDs). Examples includeintegrated circuits and field-effecttransistors. Immediately before handling anysemiconductor components or assemblies,drain the electrostatic charge from yourbody by touching a known earth ground. 16. Always connect a test instrument’s groundlead to the instrument chassis ground beforeconnecting the positive lead; always removethe instrument’s ground lead last.Follow these special safety precautions. Although the microwave oven is completely safe during ordinaryuse, repair work can be extremely hazardous due to possible exposure to microwave radiation, as well aspotentially lethal high voltages and currents.

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