Service Manual
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Specifications 3. Operating Instructions 4. PCB Diagrams 9. Troubleshooting 7. Disassembly and Reassembly 5. MICROWAVE OVEN MW7490W SERVICE Manual MICROWAVE OVEN SECA CONTENTS 1. Alignment and Adjustments 6. Exploded Views and Parts List 8. Schematic Diagrams Precaution 2.
Specifications 3. Operating Instructions 4. PCB Diagrams 9. Troubleshooting 7. Disassembly and Reassembly 5. MICROWAVE OVEN MW7490W SERVICE Manual MICROWAVE OVEN SECA CONTENTS 1. Alignment and Adjustments 6. Exploded Views and Parts List 8. Schematic Diagrams Precaution 2.
Service Manual
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Samsung Electronics PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave...in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual before the oven is released to the owner. (e) A Microwave leakage check to verify compliance with the Federal...
Samsung Electronics PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave...in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual before the oven is released to the owner. (e) A Microwave leakage check to verify compliance with the Federal...
Service Manual
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...of its assemblies, be done in accordance with the door open : Instruct the user not to microwave radiation, as well as the Interlock Monitor Switch. Although the microwave oven is described elsewhere in protective devices are replaced. Restore any component or assembly. 14. Examples:.... Make sure that are correctly installed. 15. Such components are easily damaged by touching a known earth ground. 16. Samsung Electronics 1-1 This product complies with the wiring diagram. When reinstalling the chassis and its assemblies) unless all protective devices, ...
...of its assemblies, be done in accordance with the door open : Instruct the user not to microwave radiation, as well as the Interlock Monitor Switch. Although the microwave oven is described elsewhere in protective devices are replaced. Restore any component or assembly. 14. Examples:.... Make sure that are correctly installed. 15. Such components are easily damaged by touching a known earth ground. 16. Samsung Electronics 1-1 This product complies with the wiring diagram. When reinstalling the chassis and its assemblies) unless all protective devices, ...
Service Manual
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... test. 4-4 Replacement of Fuse 1. When the above three switches operate properly, check if any other part such as to prevent an excessive microwave leakage. 1. Take out the glass tray and the guide roller from the drive motor. 5. Disconnect all the leads to the cavity. 6. ...the coupler. 7. Screw the drive motor cover to replace the drive motor. 3. Samsung Electronics Screw Drive Motor Drive Motor Cover Base Plate 4-3 If the door assembly is defective. 4-5 Replacement of Drive Motor 1. Turn the oven upside down to the base plate with the coupler. 8. Adjust so that the door...
... test. 4-4 Replacement of Fuse 1. When the above three switches operate properly, check if any other part such as to prevent an excessive microwave leakage. 1. Take out the glass tray and the guide roller from the drive motor. 5. Disconnect all the leads to the cavity. 6. ...the coupler. 7. Screw the drive motor cover to replace the drive motor. 3. Samsung Electronics Screw Drive Motor Drive Motor Cover Base Plate 4-3 If the door assembly is defective. 4-5 Replacement of Drive Motor 1. Turn the oven upside down to the base plate with the coupler. 8. Adjust so that the door...
Service Manual
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...be infinite in one direction and several hundred KΩ in the oven. When mounting Primary switch and Interlock Monitor switch to the oven assembly. 4. Operate the microwave oven with the wiring diagram and be read in the door by disconnecting ...the leads. 2. Primary Interlock Switch Interlock Monitor Switch Body Latch Lever Door Door Sensing Switch Primary switch Monitor switch (COM-NC) Door Sensing S/W Door Open ∞ 0 ∞ Door Closed 0 ∞ 0 5-2 Samsung...
...be infinite in one direction and several hundred KΩ in the oven. When mounting Primary switch and Interlock Monitor switch to the oven assembly. 4. Operate the microwave oven with the wiring diagram and be read in the door by disconnecting ...the leads. 2. Primary Interlock Switch Interlock Monitor Switch Body Latch Lever Door Door Sensing Switch Primary switch Monitor switch (COM-NC) Door Sensing S/W Door Open ∞ 0 ∞ Door Closed 0 ∞ 0 5-2 Samsung...
Service Manual
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...thermometer, and record glass vessel's temperature ("T1", 10±0.2˚C). 3. Set the oven to 10.5˚C at 'HIGH'. The output power is marginal. Additional power test ...as a holding time of the cooking tray. NOTE 2: Output power in the temperature rise. Samsung Electronics 5-3 When heating is computed by multiplying the temperature rise (step 5) by a factor...of Magnetron Alignment and Adjustments CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. Fill the one liter ...
...thermometer, and record glass vessel's temperature ("T1", 10±0.2˚C). 3. Set the oven to 10.5˚C at 'HIGH'. The output power is marginal. Additional power test ...as a holding time of the cooking tray. NOTE 2: Output power in the temperature rise. Samsung Electronics 5-3 When heating is computed by multiplying the temperature rise (step 5) by a factor...of Magnetron Alignment and Adjustments CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. Fill the one liter ...
Service Manual
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...to 600cc, and place the beaker in the center of the oven. 2) Start to operate the oven and measure the leakage by its manufacturer. 5-4 Samsung Electronics CENTRAL SERVICE CENTER 5-12-2 At least once a year have the microwave energy survey meter checked for the measured values, and keep the... probe perpendicular to the areas making sure that fact to ; Start the oven at the base of the ...
...to 600cc, and place the beaker in the center of the oven. 2) Start to operate the oven and measure the leakage by its manufacturer. 5-4 Samsung Electronics CENTRAL SERVICE CENTER 5-12-2 At least once a year have the microwave energy survey meter checked for the measured values, and keep the... probe perpendicular to the areas making sure that fact to ; Start the oven at the base of the ...
Service Manual
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...2: When HVTransformer is OK. Open or loose connection of latch switches 2. Defective primary latch switch 6. Samsung Electronics 6-1 Fuse is replaced, check diode and magnetron also. 1. Oven does not accept key input (Program) Timer starts countdown but no operation at all . Defective Ass'y ... BEFORE CHECKING FOR TROUBLE. 2. Key input is defective. Shorted or open membrane panel 4. No display and no microwave oscillation. (No heat while oven lamp and fan motor turn on.) CAUSE CORRECTIONS 1. Open thermal cutout (Magnetron) 3. Shorted HVTransformer (NOTE2) Check...
...2: When HVTransformer is OK. Open or loose connection of latch switches 2. Defective primary latch switch 6. Samsung Electronics 6-1 Fuse is replaced, check diode and magnetron also. 1. Oven does not accept key input (Program) Timer starts countdown but no operation at all . Defective Ass'y ... BEFORE CHECKING FOR TROUBLE. 2. Key input is defective. Shorted or open membrane panel 4. No display and no microwave oscillation. (No heat while oven lamp and fan motor turn on.) CAUSE CORRECTIONS 1. Open thermal cutout (Magnetron) 3. Shorted HVTransformer (NOTE2) Check...
Service Manual
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... to the plugged in mode. Ceramic ware trimmed with metallic trimming. Consult electrician. Replace turntable motor. 6-2 Samsung Electronics Troubleshooting 6-2 Electrical Mulifunction(continued) SYMPTOM Oven lamp and fan motor turn on H.V.Transformer 3. Open or loose wiring of door sensing switch Defective Ass'y PCB...Open or loose wiring of fan motor. Open or loose wiring of door sensing switch. Wrap thinner parts of microwave due to operate. Microwave output is low;. Metallic ware or cooking dishes touching on when plugged in power source voltage. 2. Check wire ...
... to the plugged in mode. Ceramic ware trimmed with metallic trimming. Consult electrician. Replace turntable motor. 6-2 Samsung Electronics Troubleshooting 6-2 Electrical Mulifunction(continued) SYMPTOM Oven lamp and fan motor turn on H.V.Transformer 3. Open or loose wiring of door sensing switch Defective Ass'y PCB...Open or loose wiring of fan motor. Open or loose wiring of door sensing switch. Wrap thinner parts of microwave due to operate. Microwave output is low;. Metallic ware or cooking dishes touching on when plugged in power source voltage. 2. Check wire ...