Kenmore 721.626494 manual Service Information, Precautions and Repair Service Tips, Preliminary

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SERVICE INFORMATION

PRECAUTIONS AND REPAIR SERVICE TIPS

PRELIMINARY

A. SINCE NEARLY 2,100 VOLTS EXISTS IN SOME CIRCUITS OF THIS UNIT REPAIRS SHOULD BE CARRIED OUT WITH GREAT CARE.

The filament leads of magnetron carry High Voltage with respect to ground. Extreme caution must be exercised. Never plug the unit into a power source to determine which component is defective in high voltage section.

B. TO AVOID POSSIBLE EXPOSURE TO MICROWAVE ENERGY LEAKAGE, THE FOLLOWING PRECAUTIONS MUST BE TAKEN BEFORE SERVICING.

(1)Before the power is applied:

(a)Make sure the primary interlock switch, the secondary interlock switch and the interlock monitor switch operate properly by opening and closing the door several by opening and closing the door several times.

(b)Make sure the perforated screen and the dielectric choke of the door are correctly and firmly mounted.

(2)After power is applied:

(a)Make sure the interlock switch mechanism is operating properly by opening and closing the door.

(b)Check microwave energy leakage must bebelow the limit of 5 mW/cm2.

(All service adjustments should be made for minimum microwave energy leakage readings).

(3)Do not operate the unit until it is completely repaired, if any of the following conditions exist. The unit must not be operated.

(a)The door does not close firmly.

(b)The hinge is broken.

(c)The door seal is damaged.

(d)The door is bent or warped, or there is any other visible damage on the unit that may cause microwave energy leakage.

NOTE: Always keep the seal clean.

(e)Make sure that there are no defective parts in the interlock mechanism.

(f)Make sure that there are no detective parts

in the microwave generating and transmission assembly (especially waveguide).

(4)The following items should be checked after the unit is repaired:

(a)The interlock monitor switch is connected correctly and firmly.

(b)The magnetron gasket is properly positioned and mounted.

(c)The waveguide and the oven cavity are intact. (no microwave energy leakage)

(d)The door can be properly closed and the safety switches work properly.

(e)The unit must stop when the door is opened or the time is up.

The unit must not be operated with any of the above components removed or by-passed.

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Contents Division Basic Field Manual For Microwave Oven Page Table of Contents Specifications Microwave Radiation Precautions on Installation InstallationsControl Panel Operating InstructionsStart Control Panel InstructionsOverall Circuit Diagram Schematic Diagram II *Check the Model No. ADD Noise filter Matrix Circuit for Touch KEY Board General Precautions in USE General Information for ServiceFeatures and Specifications Features Trial OperationPrecautions and Repair Service Tips Service InformationPreliminary Equipment Microwave Leakage TestMeasurement with the Outer Case Removed Power Output MeasurementImportant Notes Disassembly InstructionsHOW to Insert the F.P.C. Connector HOW to Remove the F.P.C. ConnectorRemoving the OUT CASEFigure Removing the Door Interlock Switches Figures 9,10 Removing Magnetron Removing Door Figure Removing the Ventilation FAN Assy Assembling DoorRemoving the Turntable Motor Interlock Mechanism Interlock SystemTest the Latch and Switch Sequence Interlock Continuity Test Components Test ProcedureTest Procedures Test and Checkout Precedures and TroubleshootingComponents Test Procedures Results Matrix Circuit for FPC Connector Power Level Checkout ProceduresCheckout Procedures for Relay Problem a Checkout Procedures for Circuit Board Trouble Shooting Thermostat Problem D No buzzing when touching the key, between Fuse Door Parts Exploded ViewController Parts Oven Cavity Parts Latch Board Parts Interior Parts Interior Parts II Model 721.80592402 721.80599402 721.80594402 Installation Parts No 3828W5S5158

721.626444, 721.805994, 721.626494, 721.626424, 721.626434 specifications

The Kenmore 721 series, comprising the models 721.805944, 721.805934, 721.805924, 721.626434, and 721.626424, is renowned for its innovative features and reliable performance in the world of microwave ovens. These models reflect Kenmore's commitment to blending efficiency with modern technology.

One of the standout features of the Kenmore 721 series is their Sensor Cooking technology. This advanced system senses the moisture released from food, adjusting cooking time and power levels automatically for optimal results. This ensures that every meal is cooked to perfection, eliminating the guesswork often associated with microwave cooking.

The 721.805944 and 721.805934 models boast a generous capacity, making them ideal for families or for those who enjoy entertaining. The spacious interior allows users to easily cook large dishes or multiple items at once. The turntable function also ensures even heating for all food types, providing consistent results every time.

Additionally, the series incorporates various power levels, allowing for versatility in cooking. Whether you're defrosting, reheating, or cooking, these microwaves can handle various tasks with ease. The included presets for popular foods streamline the cooking process, offering convenience at the touch of a button.

The Kenmore 721 series also prioritizes user-friendly interfaces with digital displays and intuitive controls. This makes navigating through settings simple, even for those less familiar with technology. Moreover, a child lock feature enhances safety in households with young kids, giving parents peace of mind while cooking.

In terms of aesthetics, these microwaves feature a sleek design that can fit seamlessly into any kitchen décor. The stainless-steel finish not only adds a modern touch but is also resistant to stains and easy to clean.

Energy efficiency is another key characteristic of the Kenmore 721 series. These models are designed to use less power while delivering high-performance cooking results, making them an environmentally friendly choice for mindful consumers.

With their combination of innovative technology, user-friendly features, and reliable performance, the Kenmore 721.805944, 721.805934, 721.805924, 721.626434, and 721.626424 models stand out as excellent choices for anyone seeking a versatile and efficient microwave solution in today’s fast-paced kitchen environments.
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