Sharp R-1481, R-1480, R-1482 Outer Case Removal, Power Transformer Removal, Re-install

Page 29

R-1480

R-1481

R-1482

4. Pull the hood exhaust louver from the oven cavity by

to remove.

pushing the right and left tabs of the hood exhaust louver

5. Now, the hood exhaust louver is free.

REMOVAL OF OVEN FROM WALL (Two persons recommended to remove the oven)

1.Disconnect the power supply cord, and uncoil the power supply cord.

2.Remove the turntable tray and support from the oven cavity.

3.Remove the one (1) screw holding the exhaust damper assembly to the rear stay, and remove the exhaust damper assembly by sliding it backward.

4.Remove the two (2) screws holding the oven (outer case cabinet) to the top cabinet.

5.Remove the hood exhaust louver referring to "HOOD

EXHAUST LOUVER REMOVAL".

6.While supporting the front of the oven, unfasten the two

(2)unit mounting screws holding the oven to the unit mounting plate.

7.Remove the oven by sliding it into the arms of the unit mounting plate and pull the power cord out of the wall cabinet.

8.The oven is now free and can be placed on the work surface selected for servicing the oven.

9.Installation is the reverse of this procedure.

OUTER CASE REMOVAL

Remove the oven from the wall and proceed as follows;

1.Disconnect the power supply cord.

2.Open the door and block it open.

3.Remove one (1) screw holding the hood exhaust louver to the oven, and pull it forward to remove by pushing the right and left tabs of the hood exhaust louver. (Refer to procedure of "HOOD EXHAUST LOUVER REMOVAL".)

4.Remove four (4) screws holding the rear stay to the hood fan motor or the oven, and remove it.

5.Remove the four (4) screws from the rear of the outer case cabinet.

6.Slide the outer case cabinet back about 1 inch (3 cm) to

free it from retaining clips on the cavity face plate.

7.Disconnect the three (3) pin connector of the power supply cord from the wiring harness and remove the power supply cord together with the outer case.

8.Discharge high voltage capacitor.

CAUTION: 1. DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE.

2.DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.

POWER TRANSFORMER REMOVAL

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

2.Open the door and block it open.

3.Discharge high voltage capacitor.

4.Remove one (1) screw holding the hood duct to the oven cavity front flange.

5.Disconnect the stop switch harness from the chassis support and disconnect the wire leads from the fan motor.

6.Lift up the fan motor side of the hood duct.

7.Disconnect filament leads of transformer from the magnetron and capacitor.

8.Disconnect high voltage leads of capacitor from the transformer.

9.Disconnect wire leads from transformer.

10.Remove two (2) screws holding the transformer to right base plate.

Re-install

1.Install by sliding the transformer on the right base plate with its primary terminals toward the outer case.

2.Secure the transformer with two (2) screws to right base plate.

3.Re-connect wire leads (primary and high voltage) to the transformer and filament leads of transformer to magnetron and high voltage capacitor. Refer to

"PICTORIAL DIAGRAM".

4.Re-install the hood duct holding the fan motor to the oven cavity front flange with one (1) screw.

5.Reconnect the wire leads to the chassis support and the fan motor, referring to "PICTORIAL DIAGRAM".

6.Re-install the outer case and check that oven is operating properly.

CAUTION: MAKE SURE THE WIRE LEADS NEVER TOUCH THE FAN BLADE.

HOOD FAN MOTOR, HOOD DUCT AND OVEN LAMP SOCKET 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.Disconnect the 6-pin connector of the hood fan motor from the main wire harness located at the right edge of the hood duct and release the snap band from the hood duct.

5.Remove the hood fan motor from the hood duct by lifting it up.

6.Now, the hood fan motor is free.

7.Remove one (1) screw holding the hood duct to the oven cavity front plate.

8.Release the 6-pin connector and the 3-pin connector of the main harness A from the hood duct.

9.Disconnect the wire leads from the fan motor and chassis support, and release the wire leads from holes of the

27

Page 28 Page 30
Image 29
Page 28 Page 30
Contents Over the Range Microwave Oven Table of ContentsBefore Servicing Dont Touch Before Servicing When the testing is completedLeakage test Microwave Measurement ProcedureRequirements Over the Range Microwave Oven Sharp PLAZA, Mahwah1480 / R-1481 / R-1482 ForewordGeneral Information Product SpecificationDescription Grounding InstructionsOven Diagram Description of Operating Sequence OperationOFF Condition Cooking ConditionCompu Defrost Cooking Power Level P-0 to P-90 CookingCompu Cook Vertical Venting Ventilation Methods HOT AIR ExhaustAIR Flow Horizontal VentingFigure O-1. Oven Schematic-Off Condition Description and Function of Components Hood Lamp Troubleshooting GuideStirrer Motor Possible Case Defective Parts Procedure Letter Component Test Magnetron Assembly Test Test ProceduresMicrowave Output Power Power Transformer TestMagnetron Temperature Fuse Test Procedure Letter Component TestHigh Voltage Rectifier Test High Voltage Capacitor TestPrimary Interlock System Test Door Sensing Switch Secondary Interlock Switch TestMonitor Switch Test Primary Interlock Relay RY2Hood FAN Motor Test Blown Monitor Fuse TestHood Thermal CUT-OUT Test WHT 3 Touch Control Panel Assembly TestBefore testing KEY Unit Test Weight 1ST Stage 2ND Stage 3RD Stage 4TH Stage Level Time Procedure Letter Component Test Relay TestFoil Pattern on the Printed Wiring Board Test Compu Defrost TestSteps Occurrence Cause or Correction Procedure Component Test LetterOccurrence Cause or Correction Touch Control Panel Assembly LSIIZA876DR Description of LSISignal coming from touch key Signal to sound buzzerSignal similar to P27 Digit selection signalKey strobe signal Segment data signalsSegment data signal Servicing Other PrecautionsShapes of Electronic Components Servicing of Touch Control PanelHood Exhaust Louver Removal Component Replacement and Adjustment ProcedureRe-install Power Transformer RemovalOuter Case Removal Hood FAN MOTOR, Hood Duct and Oven Lamp Socket RemovalHigh Voltage Rectifier and High Voltage Capacitor Removal Magnetron RemovalHood FAN Thermal CUT-OUT Removal Thermal CUT-OUT Cavity RemovalRear View Temperature Fuse Magnetron RemovalCooling FAN Motor Removal Control Panel ASSEMBLY, Control Unit and KEY Unit Removal Stirrer Cover and Stirrer FAN InstallationTurntable Motor Removal Stirrer Motor RemovalStep Positive Lock Connector NO-CASE Type RemovalPositive lock connector After adjustment, check the following Door ReplacementDoor Assembly Removal Door Assembly RE-INSTALLAfter any servicing, make sure of the following Door DisassemblyChoke Cover Door FrameFigure S-1. Pictorial Diagram Circuit BFB DIPParts marked * are used in voltage more than Parts ListElectric Parts Cabinet PartsDoor Parts Oven PartsMiscellaneous HOW to Order Replacement PartsSCREWS,NUTS and Washers Model NumberOven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous Copyright 1998 by Sharp Corporation ALL Rights Reserved Packing and Accessories

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.
Top Page Image Contents