Sharp R-310BW Service Manual

R-310BKR-310BWIn the interest of user-safety the oven should be restored to its originalcondition and only parts identical to those specified should b

8R-310BKR-310BWDESCRIPTION AND FUNCTION OF COMPONENTSDOOR OPEN MECHANISMThe door is opened by pushing the open button on thecontrol panel, refer to th

9R-310BKR-310BWTROUBLESHOOTING GUIDENever touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected.When

10R-310BKR-310BWHome fuse or circuit breakerblows when power cord is pluggedinto wall receptacleMonitor fuse blows when powercord is plugged into wall

11R-310BKR-310BWB POWER TRANSFORMER TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3. Discharg

12R-310BKR-310BWTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block

13R-310BKR-310BWTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block

14R-310BKR-310BWH BLOWN MONITOR FUSE TESTTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2

15R-310BKR-310BW7) Reconnect the power supply cord after the outer case is installed.8) Run the oven and check all functions.The following symptoms in

16R-310BKR-310BWWARNING : The oven should be fully assembled before following procedure.(1) Place one cup of water in the center of the turntable tray

17R-310BKR-310BWTo protect the electronic circuits, this model is provided with a fine foil pattern added to the primary onthe PWB, this foil pattern

R-310BKR-310BWPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVEENERGY(a) Do not operate or allow

18R-310BKR-310BWTOUCH CONTROL PANEL ASSEMBLYOUTLINE OF TOUCH CONTROL PANELThe touch control section consists of the following units.(1) Key Unit(2) Co

19R-310BKR-310BWSignal I/O DescriptionP-HIH : GNDL : -5VH : GNDL : -5VP-70ONONOFFOFF OFF24 sec.8 sec.AB0.1 sec.2 sec.H : GNDL : -5VH : GNDL : -5V16.7

20R-310BKR-310BWPin No. Signal I/O DescriptionR81 OUT Key strobe signal.Signal applied to touch-key section. A pulse signal is input to R60 - R63 term

21R-310BKR-310BW1. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of the circuits.When handling these part

22R-310BKR-310BWTo remove the outer case, procedure as follows.1. Disconnect the power supply cord.2. Open the oven door and block it open.3. Remove t

23R-310BKR-310BWPOWER TRANSFORMER REMOVALRe-install1. Install the terminal insulator to receptacle of filamentlead (longer one) of power transformer.2

24R-310BKR-310BWCONTROL PANEL ASSEMBLY REMOVALOVEN LAMP AND LAMP SOCKET REMOVAL1.Disconnect the power supply cord and remove outer case.2. Open the do

25R-310BKR-310BWCOOLING FAN MOTOR REMOVALREMOVAL1.Disconnect the power supply cord and remove outer case.2. Open the door and block it open.3. Dischar

26R-310BKR-310BWDOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT1. Disconnect the power supply cord, and then removeouter

27R-310BKR-310BWREMOVAL1. Disconnect the power supply cord.2. Push the open button and open the door slightly.3. Insert a putty knife (thickness of ab

1R-310BKR-310BWWARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowin

28R-310BKR-310BW645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramHIGH VOLTAGECAPACITORH.V.RECTIFIERPOWER SUPPLY CORD 120V 60HzHIGH VOLTAGE

29R-310BKR-310BW645123645123ABCDEFGHABCDEFGHFigure S-2. Power Unit Circuit+–+–+–A 1A 2C 1C 2C 3C 4C 5C 6C 7C 8C 9B 1B 2T11436ACACSH-BSH-AMICRODOORSWI

30R-310BKR-310BW645123645123ABCDEFGHABCDEFGHFigure S-3. CPU Unit Circuit+–C 1NCGNDVCINTBUZZERRY1RY2(RY3)DOORSWITCHNOTE: IF NOT SPECIFIED, 1/10w ± 5%

31R-310BKR-310BW645123645123ABCDEFGHABCDEFGHFigure S-4. Printed Wiring Board of Power UnitWH - 1WH - 1SH - BSH - ALD1DIPLD21C3C4C5R3C2FC110D4D2D1D3D9(

32R-310BKR-310BW**∆*∆**∆PARTS LISTNote: The parts marked “∆” may cause undue microwave exposure.The parts marked “*” are used in voltage more than 250

33R-310BKR-310BWREF. NO. PART NO. DESCRIPTION Q'TY CODEHOW TO ORDER REPLACEMENT PARTSTo have your order filled promptly and correctly, please fur

34R-310BKR-310BW645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS7-57-57-47-47-57-72-14-14-167-67-37-36-27-37-61-11-11-24-81-74-47-57-54-37-56-17-11-

35R-310BKR-310BW645123645123ABCDEFGHABCDEFGHCONTROL PANEL PARTSDOOR PARTSMISCELLANEOUS5-24-185-15-85-45-35-5Actual wire harness may be different from

36R-310BKR-310BW645123645123ABCDEFGHABCDEFGHPACKING AND ACCESSORIESDOOR PROTECTION SHEETSPADPA204WRE0TOP PAD ASSEMBLYFPADBA341WRK0PLASTIC BAGSSAKHA

37R-310BKR-310BW

2R-310BKR-310BWMICROWAVE MEASUREMENT PROCEDUREA. Requirements:1) Microwave leakage limit (Power density limit): The power density of microwave radiati

38R-310BKR-310BW'98 SHARP CORP. (4S2.530E) Printed in U.S.ACOPYRIGHT © 1998 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication m

3R-310BKR-310BWSHARP ELECTRONICS CORPORATIONSHARP PLAZA, MAHWAH,NEW JERSEY 07430-2135SERVICE MANUALMICROWAVE OVENR-310BK/ R-310BWFOREWORDThis Manual h

4R-310BKR-310BWITEM DESCRIPTIONPower Requirements 120 Volts / 14 Amperes60 HertzSingle phase, 3 wire groundedPower Output 1100 watts (IEC-705 TEST PRO

5R-310BKR-310BWA short power-supply cord is provided to reduce risks of becomingentangled in or tripping over a longer cord.Where a two-pronged wall-

6R-310BKR-310BWOPERATIONDESCRIPTION OF OPERATING SEQUENCEThe following is a description of component functions duringoven operation.OFF CONDITIONClosi

7R-310BKR-310BWFigure O-1. Oven Schematic-Off ConditionSCHEMATICNOTE: CONDITION OF OVEN1. DOOR CLOSED2. CLOCK APPEARS ON DISPLAYSCHEMATICNOTE: CONDITI