Sharp R-1482, R-1480, R-1481 service manual Over the Range Microwave Oven, Table of Contents

Page 1

R-1480

R-1481

R-1482

SERVICE MANUAL

S3807R1480X//

OVER THE RANGE

MICROWAVE OVEN

CUSTOM HELP

 

BREAKFAST

 

 

POPCORN

 

SNACKS &

 

 

 

 

REHEAT

 

 

COMPU DEFROST

COMPU COOK

 

1

2

3

4

5

 

6

7

8

9

0

 

POWER

 

KITCHEN TIMER

 

 

LEVEL

 

 

MINUTE

 

 

CLOCK

 

PLUS

TURNTABLE

 

STOP

 

 

ON/OFF

 

 

START

 

 

CLEAR

 

TOUCH ON

WORK

 

NIGHT

 

FAN

LIGHT

 

 

 

 

LIGHT

 

HI/LO

MODELS R-1480

R-1481

R-1482

In the interest of user-safety the oven should be restored to its original condition and only parts identical to those specified should be used.

WARNING TO SERVICE PERSONNEL: Microwave ovens con-

tain circuitry capable of producing very high voltage and

current, contact with following parts may result in a severe,

possibly fatal, electrical shock. (High Voltage Capacitor, High

Voltage Power Transformer, Magnetron, High Voltage Recti-

fier Assembly, High Voltage Harness etc..)

TABLE OF CONTENTS

 

 

Page

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO

 

AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

INSIDE FRONT COVER

BEFORE SERVICING

INSIDE FRONT COVER

WARNING TO SERVICE PERSONNEL

1

MICROWAVE MEASUREMENT PROCEDURE

2

FOREWORD AND WARNING

3

PRODUCT SPECIFICATIONS

4

GENERAL INFORMATION

4

OPERATION

6

TROUBLESHOOTING GUIDE

11

TEST PROCEDURE

12

TOUCH CONTROL PANEL ASSEMBLY

21

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

26

PICTORIAL DIAGRAM

34

CONTROL PANEL CIRCUIT

35

PRINTED WIRING BOARD

36

PARTS LIST

37

PACKING AND ACCESSORIES

42

SHARP CORPORATION

This document has been published to be used for after sales service only.

The contents are subject to change without notice.

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Contents Over the Range Microwave Oven Table of ContentsBefore Servicing Dont Touch Before Servicing When the testing is completedRequirements Microwave Measurement ProcedureLeakage test 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 Cook Power Level P-0 to P-90 CookingCompu Defrost Cooking Vertical Venting Ventilation Methods HOT AIR ExhaustAIR Flow Horizontal VentingFigure O-1. Oven Schematic-Off Condition Description and Function of Components Stirrer Motor Troubleshooting GuideHood Lamp 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 Thermal CUT-OUT Test Blown Monitor Fuse TestHood FAN Motor Test Before testing Touch Control Panel Assembly TestWHT 3 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 TestOccurrence Cause or Correction Procedure Component Test LetterSteps Occurrence Cause or Correction Touch Control Panel Assembly LSIIZA876DR Description of LSISignal coming from touch key Signal to sound buzzerSignal similar to P27 Digit selection signalSegment data signal Segment data signalsKey strobe 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 RemovalCooling FAN Motor Removal Temperature Fuse Magnetron RemovalRear View Control Panel ASSEMBLY, Control Unit and KEY Unit Removal Stirrer Cover and Stirrer FAN InstallationTurntable Motor Removal Stirrer Motor RemovalPositive lock connector Positive Lock Connector NO-CASE Type RemovalStep 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.