Sharp R-216LS Precautions for Using LEAD-FREE Solder, Employing lead-free solder, Soldering

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R216LS

CHAPTER 10. PRECAUTIONS FOR USING LEAD-FREE SOLDER

[1] Employing lead-free solder

The "Main PWB" of this model employs lead-free solder. This is indicated by the "LF" symbol printed on the PWB and in the service manual. The suf- fix letter indicates the alloy type of the solder.

Example:

Indicates lead-free solder of tin, silver and copper

[2] Using lead-free wire solder

When repairing a PWB with the "LF" symbol, only lead-free solder should be used. (Using normal tin/lead alloy solder may result in cold soldered joints and damage to printed patterns.)

As the melting point of lead-free solder is approximately 40°C higher than tin/lead alloy solder, it is recommend that a dedicated bit is used, and that the iron temperature is adjusted accordingly.

[3] Soldering

As the melting point of lead-free solder (Sn-Ag-Cu) is higher and has poorer wettability, (flow), to prevent damage to the land of the PWB, extreme care should be taken not to leave the bit in contact with the PWB for an extended period of time. Remove the bit as soon as a good flow is achieved. The high content of tin in lead free solder will cause premature corrosion of the bit. To reduce wear on the bit, reduce the temperature or turn off the iron when it is not required.

Leaving different types of solder on the bit will cause contamination of the different alloys, which will alter their characteristics, making good soldering more difficult. It will be necessary to clean and replace bits more often when using lead-free solder. To reduce bit wear, care should be taken to clean the bit thoroughly after each use.

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Contents Model R-216LS Microwave Measurement PRO Precautions for Using Lead Free SolderComponent Replacement Adjustment ProcedureBefore Servicing Before Servicing When the testing is completedAfter repairing Leakage test Microwave Measurement ProcedurePreparation for testing RequirementsForeword Foreword and WarningDescription Product Description 1 SpecificationsOven Oven DiagramGeneral Information Grounding InstructionsTouch Control Panel OFF Condition Power Level CookingPower Output Reduction Description of Operating SequenceCooking Condition Schematic Door Closed Clock Appears on DisplayOven Schenatic Off ConditionDescription and Function of Components Troubleshooting Chart Troubleshooting GuideProcedure C High Voltage Rectifier Test Test ProceduresProcedure a Magnetron Assembly Test Procedure B Power Transformer TestProcedure F Primary Interlock System Test Procedure D High Voltage Capacitor TestProcedure E Temperature Fuse Oven Test Procedure F Secondary Interlock Switch TestPrimary Interlock Relay RY2 Procedure G Monitor Switch TestProcedure H Blown Minitor Fuse Test Control Unit Procedure I Noise Filter TestProcedure J Touch Control Panel Assembly Test Key UnitProcedure L Relay Test Procedure K KEY Unit TestProcedure N Foil Pattern on the Printed Wiring Board Test Procedure M Defrost TestR216LS Servicing for Touch Control Panel Touch Control Panel AssemblyPrecautions for Handling Electronic Components Outline of Touch Control PanelServicing Tools Other PrecautionsSoldering Precautions for Using LEAD-FREE SolderUsing lead-free wire solder Employing lead-free solderOuter Case Removal Component Replacement and Adjustment PROCE- DureMagnetron Removal Power Transformer RemovalPositive Lock Connector NO-CASE Type Removal ReinstallTrol Panel Assembly Removal Control Panel Assembly RemovalGraphic Sheet and Membrane Switch Replacement Cooling FAN Motor Removal Power Supply Cord ReplacementTurntable Motor Removal Make Sure That the Axis of the Shaft is not Slanted InstallationAdjustment Make Sure That the FAN Blade Rotates Smooth After InstalledAfter any service, make sure of the following Door ReplacementAfter adjustment, check the following Sealer Film Figure C-7. Door ReplacementPictorial Diagram Figure DiagramsLiquid Crystal Display Control Panel Circuit Figure S-2Code Printed Wiring Board Figure S-3DIP UnitMeno Parts Guide Oven Parts Parts Code Price NEW Description Rank Mark Oven PartsDoor and Control Panel Parts Door and Control Panel Parts „INDEX

R-216LS specifications

The Sharp R-216LS is a versatile microwave oven that combines affordability with a range of features designed to enhance your cooking experience. Compact yet powerful, this model is especially suitable for small kitchens or dorm rooms, where space is at a premium.

One of the standout features of the Sharp R-216LS is its impressive 800 watts of cooking power. This ensures quick and efficient heating, allowing users to prepare meals in a fraction of the time compared to conventional ovens. The microwave also features a variety of power levels, providing flexibility for different types of cooking and reheating tasks, from defrosting frozen food to cooking delicate items like baked goods.

The R-216LS comes equipped with a spacious 20-liter capacity, which is surprisingly roomy for its size. This allows for ample space to heat up large dishes or multiple servings at once. The interior is designed with easy cleaning in mind, featuring a non-stick coating that prevents food from adhering to the surfaces and simplifies maintenance.

In terms of usability, the Sharp R-216LS boasts a user-friendly interface with straightforward knobs and buttons. It includes a timer and a range of pre-programmed cooking options, enabling users to cook a variety of foods with just the touch of a button. This is particularly beneficial for those new to microwave cooking or for busy individuals looking to save time.

The microwave also incorporates advanced technologies, including inverter microwave technology, which provides a continuous stream of cooking power for more even heating and defrosting. This ensures that your food is cooked thoroughly without the risk of hot and cold spots.

Safety is another priority in the design of the R-216LS. It features a child safety lock, which prevents accidental operation, making it a perfect choice for families with young children. The model also has an automatic shut-off feature, ensuring that the microwave turns off when not in use.

In summary, the Sharp R-216LS is a compact microwave that offers a blend of power, convenience, and safety features, making it an excellent choice for anyone seeking a reliable cooking appliance. Whether for reheating leftovers, cooking meals, or defrosting ingredients, this microwave is designed to meet the diverse needs of modern kitchens. With its combination of thoughtful design and functionality, the R-216LS stands out as a worthy investment for those looking for efficiency and performance in their cooking appliances.
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