Sharp R-1482, R-1480 Door Replacement, Control Unit and KEY Unit Removal, Door Assembly Removal

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R-1480 R-1481 R-1482

procedure of "CONTROL PANEL ASSEMBLY ,

CONTROL UNIT AND KEY UNIT REMOVAL".

5.Remove the two (2) screws holding the latch hook to the oven cavity front flange.

6.Remove the latch hook from the oven cavity front flange.

7.Disconnect the wire leads of each switch.

8.Remove each switch from the latch hook by pushing the one (1) stopper tub holding each switch.

9.Now, each switch is free.

Re-install

1. Re-install each switch in its place. The secondary interlock

switch is in the lower position, door sensing switch is in the upper position and the monitor switch is in the middle position.

2.Re-connect wire leads to each switch. Refer to pictorial diagram.

3.Secure the latch hook (with two (2) mounting screws) to oven cavity front flange.

4.Make sure that the monitor switch is operating properly and check continuity of the monitor circuit. Refer to chapter "Test Procedure" and "Adjustment procedure".

DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT

1.Disconnect the power supply cord and remove the oven from wall and remove outer case. (Refer to procedure of "Removal of Oven from Wall" and "Outer case Removal")

2.Open the door and block it open.

3.Discharge high voltage capacitor.

4.Remove the control panel assembly, referring to the procedure of "CONTROL PANEL ASSEMBLY ,

CONTROL UNIT AND KEY UNIT REMOVAL".

If the door sensing switch, secondary interlock switch and monitor switch do not operate properly due to a misadjustment, the following adjustment should be made.

5.Loosen the two (2) screws holding latch hook to the oven cavity front flange.

6.With door closed, adjust latch hook by moving it back and forth, and up and down. In and out play of the door allowed by the upper and lower position of the latch hook should be less than 0.5mm. The vertical position of the latch hook should be adjusted so that the door sensing switch and secondary interlock switch are activated with the door closed. The horizontal position of the latch hook should be adjusted so that the monitor switch is activated with the door closed.

7.Secure the screws with washers firmly.

8.Check all of the switches operation. If any switch has not activated with the door closed, loosen screw and adjust the latch hook position.

After adjustment, check the following.

1. In and out play of door remains less than 0.5mm when in

the latched position. First check upper position of latch hook, pushing and pulling upper portion of door toward the oven face. Then check lower portion of the latch hook, pushing and pulling lower portion of the door toward the oven face. Both results (play in the door) should be less than 0.5mm.

2.The door sensing switch and secondary interlock switch interrupt the circuit before the door can be opened.

3.Monitor switch contacts close when door is opened.

4.The contact of door sensing switch and secondary interlock switch open within 1.2mm gap between right side of cavity face plate and door when door is open.

5.Re-install outer case and check for microwave leakage around door with an approved microwave survey meter. (Refer to Microwave Measurement Procedure.)

Latch

 

Hook

 

Latch

 

Heads

 

 

Door

 

Sensing

 

Switch

 

Monitor

 

Fuse

Door

Monitor

 

Switch

 

Secondary

 

Interlock

 

Switch

Figure C-1. Latch Switch Adjustments

DOOR REPLACEMENT

DOOR ASSEMBLY REMOVAL

1.Disconnect the power supply cord and remove the oven from wall and remove outer case. (Refer to procedure of "Removal of Oven from Wall" and "Outer case Removal")

2.Open the door and block it open.

3.Discharge high voltage capacitor.

4.Remove the hood exhaust louver from the oven cavity by pushing the right and left tabs of the hood exhaust louver. (Refer to the procedure of "HOOD EXHAUST LOUVER REMOVAL".)

5.Insert a putty knife (thickness of about 0.5mm) into the gap A between the door stopper and the choke cover as shown in Figure C-3 to free engaging parts.

6.Lift up the door stopper.

7.Now, the door stopper is free from the door assembly.

8.Lift up the door assembly to release the upper and lower door hinge pins from the upper and lower oven hinges.

9.Now, the door assembly is free.

Note: When the individual parts are replaced, refer to "Door Disassembly".

DOOR ASSEMBLY RE-INSTALL

1.On re-installing door, insert the lower oven hinge to lower door hinge pin.

2.Insert the upper oven hinge to the upper door hinge pin.

3.Shut the door (close the contacts of interlock switches).

4.Make sure upper and lower oven hinges are inserted into the upper an lower door hinge pins.

5.Make sure the door is parallel with oven face lines (left and upper side lines) and door latch heads pass through

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Contents Table of Contents Over the Range Microwave OvenBefore Servicing When the testing is completed Dont Touch Before ServicingRequirements Microwave Measurement ProcedureLeakage test 1480 / R-1481 / R-1482 Sharp PLAZA, MahwahOver the Range Microwave Oven ForewordDescription Product SpecificationGeneral Information Grounding InstructionsOven Diagram OFF Condition OperationDescription of Operating Sequence Cooking ConditionCompu Cook Power Level P-0 to P-90 CookingCompu Defrost Cooking AIR Flow Ventilation Methods HOT AIR ExhaustVertical Venting Horizontal VentingFigure O-1. Oven Schematic-Off Condition Description and Function of Components Stirrer Motor Troubleshooting GuideHood Lamp Possible Case Defective Parts Microwave Output Power Test ProceduresProcedure Letter Component Test Magnetron Assembly Test Power Transformer TestHigh Voltage Rectifier Test Procedure Letter Component TestMagnetron Temperature Fuse Test High Voltage Capacitor TestMonitor Switch Test Secondary Interlock Switch TestPrimary Interlock System Test Door Sensing Switch Primary Interlock Relay RY2Hood Thermal CUT-OUT Test Blown Monitor Fuse TestHood FAN Motor Test Before testing Touch Control Panel Assembly TestWHT 3 KEY Unit Test Foil Pattern on the Printed Wiring Board Test Procedure Letter Component Test Relay TestWeight 1ST Stage 2ND Stage 3RD Stage 4TH Stage Level Time Compu Defrost TestOccurrence Cause or Correction Procedure Component Test LetterSteps Occurrence Cause or Correction Touch Control Panel Assembly Description of LSI LSIIZA876DRSignal similar to P27 Signal to sound buzzerSignal coming from touch key Digit selection signalSegment data signal Segment data signalsKey strobe signal Shapes of Electronic Components Other PrecautionsServicing Servicing of Touch Control PanelComponent Replacement and Adjustment Procedure Hood Exhaust Louver RemovalOuter Case Removal Power Transformer RemovalRe-install Hood FAN MOTOR, Hood Duct and Oven Lamp Socket RemovalHood FAN Thermal CUT-OUT Removal Magnetron RemovalHigh Voltage Rectifier and High Voltage Capacitor Removal Thermal CUT-OUT Cavity RemovalCooling FAN Motor Removal Temperature Fuse Magnetron RemovalRear View Turntable Motor Removal Stirrer Cover and Stirrer FAN InstallationControl Panel ASSEMBLY, Control Unit and KEY Unit Removal Stirrer Motor RemovalPositive lock connector Positive Lock Connector NO-CASE Type RemovalStep Door Assembly Removal Door ReplacementAfter adjustment, check the following Door Assembly RE-INSTALLChoke Cover Door DisassemblyAfter any servicing, make sure of the following Door FrameFigure S-1. Pictorial Diagram Circuit DIP BFBElectric Parts Parts ListParts marked * are used in voltage more than Cabinet PartsOven Parts Door PartsSCREWS,NUTS and Washers HOW to Order Replacement PartsMiscellaneous Model NumberOven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous Packing and Accessories Copyright 1998 by Sharp Corporation ALL Rights Reserved

R-1481, R-1482, R-1480 specifications

Sharp R-1480, R-1481, and R-1482 are popular countertop microwave ovens that exemplify innovation in home cooking technology. These models are designed to cater to modern culinary needs, combining functionality, efficiency, and user-friendly features.

The Sharp R-1480 stands out with its powerful 900 watts of cooking power, ensuring that meals are cooked evenly and thoroughly. This model includes a spacious 1.5 cubic feet capacity, allowing users to cook larger dishes without hassle. One of the most striking features of the R-1480 is its advanced Sensor Cooking technology. This intelligent feature automatically adjusts cooking time and power levels based on the type of food being prepared, delivering optimal results with minimal effort.

The R-1481 model shares many similarities with the R-1480 but introduces additional features that enhance convenience and usability. It also boasts a 900-watt power output and a 1.5 cubic feet interior. What sets the R-1481 apart is its impressive variety of pre-programmed settings. These settings simplify cooking tasks, giving users one-touch access to options for popular foods such as popcorn, pizza, and frozen vegetables. The auto defrost function is another advantage, allowing for quick thawing of meats and seafood based on weight.

Meanwhile, the Sharp R-1482 takes the features of the R-1481 a step further, adding a few unique characteristics. This model incorporates both microwave and grill functionality, allowing for versatile cooking options. Users can enjoy the benefits of grilling their favorite dishes for a perfect finish and flavor infusion. The R-1482 also includes a user-friendly control panel with a large LCD display, ensuring easy navigation through the cooking process.

Across these models, Sharp emphasizes safety and ease of use. The child lock feature provides peace of mind for families, while the easy-to-clean stainless steel interior promotes hygiene and longevity. All models include a turntable for even cooking and reheating, making it easier to prepare meals uniformly.

In conclusion, the Sharp R-1480, R-1481, and R-1482 microwave ovens combine advanced technology with practical features, catering to a diverse range of cooking needs. These models stand as a testament to Sharp’s commitment to quality and innovation in the kitchen, making them excellent choices for anyone seeking efficiency and versatility in their cooking appliances.
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