Sharp R-403KK Service Manual Page 1

R-405KSR-403KKIn the interest of user-safety the oven should be restored to its original condition and only parts identical to those specifiedshould b

8R-405KSR-403KKDESCRIPTION AND FUNCTION OF COMPONENTSDOOR OPEN MECHANISMThe door is opened by pushing the open button on the controlpanel, refer to th

9R-405KSR-403KKTROUBLESHOOTING GUIDENever touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected.When

10R-405KSR-403KKA MAGNETRON ASSEMBLY TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3. Dischar

11R-405KSR-403KKB POWER TRANSFORMER TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3. Discharg

12R-405KSR-403KKTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block

13R-405KSR-403KKTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block

14R-405KSR-403KKTEST PROCEDURESPROCEDURELETTERCOMPONENT TESTTherefore, unlike conventional microwave ovens, proper maintenance cannot be performedwith

15R-405KSR-403KK2-2 In connection with indicatorsa) At a certain digit, all or some segments do not light up.b) At a certain digit, brightness is low.

16R-405KSR-403KKWARNING : The oven should be fully assembled before following procedure.(1) Open the door.(2) Place one cup of water in the center of

17R-405KSR-403KKTEST PROCEDURESPROCEDURELETTERCOMPONENT TESTTo protect the electronic circuits, this model is provided with a fine foil pattern added

R-405KSR-403KKPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVEENERGY(a) Do not operate or allow

18R-405KSR-403KK3) Power Source CircuitThis circuit generates voltages necessary in the controlunit from the AC line voltage.In addition, the synchron

19R-405KSR-403KK1-2VL2-VL1IN Power source voltage input terminal.Standard voltage for LCD.3-6 AN7-AN4 INTerminal to change cooking input according to

20R-405KSR-403KK25 P41 IN Signal similar to AN3.When either G11 line on key matrix is touched, a corresponding signal will be input intoP41.26 P40 IN

21R-405KSR-403KKConnected to LCD.The relation between signals are as follows:LSI signal (Pin No.) LCD (Pin No.) LSI signal (Pin No.) LCD (Pin No.)SEG0

22R-405KSR-403KK1. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of thecircuits. When handling these part

23R-405KSR-403KKTo remove the outer case, proceed as follows.1. Disconnect the power supply cord.2. Open the oven door and block it open.3. Remove the

24R-405KSR-403KKPOWER TRANSFORMER REMOVALRe-install1. Rest transformer on the bottom plate with its primaryterminals toward the oven face plate.2.Secu

25R-405KSR-403KKPOSITIVE LOCK® CONNECTOR (NO-CASE TYPE) REMOVALFigure C-2. Positive lock® connector1. Disconnect the power supply cord, and then rem

26R-405KSR-403KKInstallation1. Remove remaining adhesive on the control panel frame surfaces with a soft cloth soaked in alcohol.2. Make sure that the

27R-405KSR-403KKCOOLING FAN MOTOR REMOVALREMOVAL1. Disconnect the power supply cord and then remove outercase.2. Open the door and block it open.3. Di

1R-405KSR-403KKWARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowin

28R-405KSR-403KK3. Secure latch hook (with two (2) mounting screws) to ovenflange.4. Make sure that the monitor switch is operating properlyand check

29R-405KSR-403KK9. Release the door panel from twelve (12) tabs of doorframe.10.Remove the door panel from the door frame.11.Now, door panel with seal

30R-405KSR-403KK645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramHIGH VOLTAGECAPACITORHIGH VOLTAGEWIRE AH.V. RECTIFIERHIGH VOLTAGE COMPONENTSO

31R-405KSR-403KK645123645123ABCDEFGHABCDEFGHFigure S-3. Control Unit CircuitFigure S-2. CPU Unit Circuit (R-405KS)

32R-405KSR-403KK645123645123ABCDEFGHABCDEFGHFigure S-2. CPU Unit Circuit (R-403KK)

33R-405KSR-403KK645123645123ABCDEFGHABCDEFGHFigure S-5 . Printed Wiring Board of Power UnitRY1RY2E C BE C BE C BVRS1L1D7D3PSD4C2D1C1D2R8R7R2R4Q3

34R-405KSR-403KKREF. NO. PART NO. § DESCRIPTION Q'TY CODEPARTS LISTNote: The parts marked “∆∆∆∆∆” may cause undue microwave exposure.The parts ma

35R-405KSR-403KKHOW TO ORDER REPLACEMENT PARTSTo have your order filled promptly and correctly, please furnish the following information.1. MODEL NUMB

36R-405KSR-403KKREF. NO. PART NO. § DESCRIPTION Q'TY CODEPARTS LISTNote: The parts marked “∆∆∆∆∆” may cause undue microwave exposure.The parts ma

37R-405KSR-403KKHOW TO ORDER REPLACEMENT PARTSTo have your order filled promptly and correctly, please furnish the following information.1. MODEL NUMB

2R-405KSR-403KKMICROWAVE MEASUREMENT PROCEDUREA. Requirements:1) Microwave leakage limit (Power density limit): The power density of microwave radiati

38R-405KSR-403KK645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS2-34-76-51-44-64-84-96-36-22-17-51-94-107-27-27-44-31-101-77-37-67-57-64-27-41-87-11

39R-405KSR-403KK645123645123ABCDEFGHABCDEFGHCONTROL PANEL PARTSActual wire harness may be different from illustration.6-76-13-43-93-103-23-33-53-63-13

40R-405KSR-403KKActual wire harness may be different from illustration.6-76-15-25-35-15-55-65-45-75-83-43-93-103-23-33-53-63-13-113-7 3-864512364512

41R-405KSR-403KKPACKING AND ACCESSORIESDOOR PROTECTION SHEET PLASTIC BAG PACKING CASE TOP PAD ASSEMBLY INTO THE OVEN CAVITY6-3 TURNTABLE TRAY6-6 O

42R-405KSR-403KK2005 SHARP CORP. (5M2.00E) Printed in U.S.ACOPYRIGHT © 2005 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may be

3R-405KSR-403KKSHARP ELECTRONICS CORPORATIONSHARP PLAZA, MAHWAH,NEW JERSEY 07430-2135SERVICE MANUALMICROWAVE OVENSR-405KS & R-403KKFOREWORDThis Ma

4R-405KSR-403KKGENERAL INFORMATIONGROUNDING INSTRUCTIONSThis oven is equipped with a three prong grounding plug. It must be plugged into a wall recept

5R-405KSR-403KK15 or 20 amp. fused electrical supply. It is recommended that a separatecircuit serving only this appliance be provided. When installin

6R-405KSR-403KKOPERATIONDESCRIPTION OF OPERATING SEQUENCEThe following is a description of component functions duringoven operation.OFF CONDITIONClosi

7R-405KSR-403KKFigure O-2 Oven Schematic - Cooking ConditionFigure O-1 Oven Schematic - Off ConditionSCHEMATICNOTE: CONDITION OF OVEN1. Door Closed2.