Sharp R-340D Manuale di Servizio

R-340DKR-340DWIn the interest of user-safety the oven should be restored to its originalcondition and only parts identical to those specified should b

8R-340DKR-340DWFigure O-2. Oven Schematic-Cooking ConditionSCHEMATICNOTE: CONDITION OF OVEN.1. DOOR CLOSED.2. COOKING TIME PROGRAMMED.3. VARIABLE COOK

9R-340DKR-340DWDESCRIPTION AND FUNCTION OF COMPONENTSDOOR OPEN MECHANISMThe door is opened by pulling the door. Refer to the FigureD-1.Figure D-1. Doo

10R-340DKR-340DWTROUBLESHOOTING GUIDENever touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected.Whe

11R-340DKR-340DWHome fuse or circuit breaker blowswhen power cord is plugged into wallreceptacleMonitor fuse blows when power cordis plugged into wall

12R-340DKR-340DWB POWER TRANSFORMER TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3. Discharg

13R-340DKR-340DWTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block

14R-340DKR-340DWTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block

15R-340DKR-340DWH BLOWN MONITOR FUSE TESTTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2

16R-340DKR-340DW3) Re-install the outer case (cabinet).4) Reconnect the power supply cord after the outer case is installed.5) Run the oven and check

17R-340DKR-340DWunit and make sure the door sensing switch is closed (either close the door or short the door sensingswitch connector). Use the Key un

R-340DKR-340DWPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVEENERGY(a) Do not operate or allow

18R-340DKR-340DWWEIGHT 1ST STAGE 2ND STAGELEVEL TIME LEVEL TIME0.5lb 70% 40sec. 40% 30sec.(5) If improper operation is indicated, the control unit is

19R-340DKR-340DW12) Re-install the outer case (cabinet).13) Reconnect the power supply cord after the outer case is installed.14) Run the oven and che

20R-340DKR-340DWTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST9-6. The display will start to count down the remaining cooking time, and the oven will tu

21R-340DKR-340DWTOUCH CONTROL PANEL ASSEMBLYOUTLINE OF TOUCH CONTROL PANELThe touch control section consists of the following units.(1) Key Unit(2) Co

22R-340DKR-340DW1 TIOCA2 OUT Terminal not used.2 A20 OUT Terminal not used.3 Vcc IN Power source voltage : +5.0V.The power source voltage to drive LSI

23R-340DKR-340DW25 P44 OUT Key strobe signal.Signal applied to touch screen section. A pulse signal is input to PB1-PB5 terminal whileone of G10 line

24R-340DKR-340DWPin No. Signal I/O Description74 LWR OUT Terminal not used.75-76 MD0-MD1 IN Connected to VCC.77 MD2 IN Connected to GND.78 Avcc IN A/D

25R-340DKR-340DW(1) Structure of Absolute Humidity SensorThe absolute humidity sensor includes two thermistorsas shown in the illustration. One thermi

26R-340DKR-340DW1. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of thecircuits. When handling these part

27R-340DKR-340DWTo 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

1R-340DKR-340DWWARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowin

28R-340DKR-340DWPOWER TRANSFORMER REMOVALRe-installation1. Rest transformer on the bottom plate with its primaryterminals toward the oven face plate.2

29R-340DKR-340DWCONTROL PANEL ASSEMBLY REMOVALOVEN LAMP AND LAMP SOCKET REMOVAL1.Disconnect the power supply cord and remove outer case.2. Open the do

30R-340DKR-340DWCOOLING FAN MOTOR REMOVALREMOVAL1. Disconnect the power supply cord and then removeouter case.2. Open the door and block it open.3. Di

31R-340DKR-340DWDOOR REPLACEMENTDOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT1. Disconnect the power supply cord, and t

32R-340DKR-340DW11.Now, door panel with sealer film is free.12.Tear sealer film from door panel.13.Now, door panel is free.14.Slide latch head upward

33R-340DKR-340DW645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramHIGH VOLTAGECAPACITORHIGH VOLTAGEWIRE BH.V.RECTIFIERPOWER SUPPLY CORD 120V 60

34R-340DKR-340DW645123645123ABCDEFGHABCDEFGHFigure S-2. Power Unit Circuit+–A 1NONOCOMCOMSH-ASH-BA 2C 3C 5C 6T1ACINTVRVAGNDBZ/ENBUZZRMICRON.CN.CACMICR

35R-340DKR-340DW645123645123ABCDEFGHABCDEFGHFigure S-3. CPU Unit Circuit46GND1VLCD1COM99COM98COM51COM100SEG160SEG159SEG158SEG3SEG2SEG1COM50COM49COM3CO

36R-340DKR-340DW645123645123ABCDEFGHABCDEFGHFigure S-5. Printed Wiring Board of Power UnitR3 CN - CQ1SH-A(GREEN)EBR2D20RY3XAVHQKITPB031MREO(J1)VRS1CN

37R-340DKR-340DW*∆**∆∆PARTS LISTNote: The parts marked “∆” may cause undue microwave exposure.The parts marked “*” are used in voltage more than 250V.

2R-340DKR-340DWMICROWAVE MEASUREMENT PROCEDUREA. Requirements:1) Microwave leakage limit (Power density limit): The power density of microwave radiati

38R-340DKR-340DWHOW TO ORDER REPLACEMENT PARTSTo have your order filled promptly and correctly, please furnish the following information.1. MODEL NUMB

39R-340DKR-340DW645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS7-57-87-57-81-106-72-14-134-171-111-154-144-21-127-17-51-74-211-87-37-31-137-64-244-

40R-340DKR-340DW645123645123ABCDEFGHABCDEFGHCONTROL PANEL PARTSDOOR PARTSMISCELLANEOUSActual wire harness may be different from illustration.6-46-3(C

41R-340DKR-340DW645123645123ABCDEFGHABCDEFGHPACKING AND ACCESSORIESDOOR PROTECTION SHEETSPADPA204WRE0TOP PAD ASSEMBLYFPADBA416WRKZPLASTIC BAGSSAKHA034

42R-340DKR-340DW2000 SHARP CORP. (1S2.530E) Printed in U.S.ACOPYRIGHT © 2000 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may b

3R-340DKR-340DWSHARP ELECTRONICS CORPORATIONSHARP PLAZA, MAHWAH,NEW JERSEY 07430-2135SERVICE MANUALMICROWAVE OVENR-340DK/ R-340DWFOREWORDThis Manual h

4R-340DKR-340DWITEM DESCRIPTIONPower Requirements 120 Volts / 14 Amperes60 HertzSingle phase, 3 wire groundedPower Output 1150 watts (IEC TEST PROCEDU

5R-340DKR-340DWcontact a qualified electrician and have it replaced with a properlygrounded three-pronged wall receptacle or have a grounding adapterp

6R-340DKR-340DWOPERATIONDESCRIPTION OF OPERATING SEQUENCEThe following is a description of component functions duringoven operation.OFF CONDITIONClosi

7R-340DKR-340DWNote: The ON/OFF time ratio does not correspond withthe percentage of microwave power, becauseapprox. 2 seconds are needed for heating