Sharp R-308DW Service Manual

R-308DWR-310DKR-310DWIn the interest of user-safety the oven should be restored to its originalcondition and only parts identical to those specified s

8R-308DWR-310DKR-310DWDESCRIPTION AND FUNCTION OF COMPONENTSDOOR OPEN MECHANISMThe door is opened by pulling the door. Refer to the FigureD-1.Figure D

9R-308DWR-310DKR-310DWTROUBLESHOOTING GUIDENever touch any part in the circuit with your hand or an uninsulated tool while the power supply is connect

10R-308DWR-310DKR-310DWA MAGNETRON ASSEMBLY TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3.

11R-308DWR-310DKR-310DWB POWER TRANSFORMER TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3. D

12R-308DWR-310DKR-310DWTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door an

13R-308DWR-310DKR-310DWTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door an

14R-308DWR-310DKR-310DWH BLOWN MONITOR FUSE TESTTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer

15R-308DWR-310DKR-310DWa) When touching the pads, a certain pad produces no signal at all.b) When touching a number pad, two figures or more are displ

16R-308DWR-310DKR-310DWWARNING : The oven should be fully assembled before following procedure.(1) Place one cup of water in the center of the turntab

17R-308DWR-310DKR-310DWTEST PROCEDURESPROCEDURELETTERCOMPONENT TESTTo protect the electronic circuits, this model is provided with a fine foil pattern

R-308DWR-310DKR-310DWPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVEENERGY(a) Do not operate or

18R-308DWR-310DKR-310DW1-2 VL2-VL1 IN Power source voltage input terminal.Standard voltage for LCD.3-6 AN7-AN4 IN Terminal to change cooking input acc

19R-308DWR-310DKR-310DW11 P57 OUT Back light circuit (Light emitting diodes) driving signal.12-13 P56-P55 OUT Terminal not used.14 CNTR0 OUT Signal to

20R-308DWR-310DKR-310DW33 P27 OUT Key strobe signal.Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45terminal whil

21R-308DWR-310DKR-310DW1. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of thecircuits. When handling the

22R-308DWR-310DKR-310DWTo remove the outer case, proceed as follows.1. Disconnect the power supply cord.2. Open the oven door and block it open.3. Rem

23R-308DWR-310DKR-310DWPOWER TRANSFORMER REMOVALRe-instal1. Rest transformer on the bottom plate with its primaryterminals toward the oven face plate.

24R-308DWR-310DKR-310DWCONTROL PANEL ASSEMBLY REMOVALOVEN LAMP AND LAMP SOCKET REMOVAL1.Disconnect the power supply cord and remove outer case.2. Open

25R-308DWR-310DKR-310DWCOOLING FAN MOTOR REMOVALREMOVAL1. Disconnect the power supply cord and then removeouter case.2. Open the door and block it ope

26R-308DWR-310DKR-310DWDOOR REPLACEMENTDOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT1. Disconnect the power supply cord

27R-308DWR-310DKR-310DW11.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

1R-308DWR-310DKR-310DWWARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withf

28R-308DWR-310DKR-310DW645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramHIGH VOLTAGECAPACITORHIGH VOLTAGEWIRE BH.V.RECTIFIERPOWER SUPPLY CORD

29R-308DWR-310DKR-310DW645123645123ABCDEFGHABCDEFGHFigure S-2. Power Unit Circuit+–A 1C 3C 5C 4C 6C 8C 1C 7C 2A 2NOSH-ACOMCOMGNDD1S1NB10T1ACACGNDINTVR

30R-308DWR-310DKR-310DW645123645123ABCDEFGHABCDEFGHFigure S-3. CPU Unit Circuit For R-308DW+–+–C-3G 9G 85 4 3 2 1 0 9 8 7 6 G 7 G 6 G 5 G 4 G 3 G 2 G

31R-308DWR-310DKR-310DW645123645123ABCDEFGHABCDEFGHFigure S-4. CPU Unit Circuit For R-310DK/DW+–+–C-3G 9G 85 4 3 2 1 0 9 8 7 6 G 7 G 6 G 5 G 4 G 3 G

32R-308DWR-310DKR-310DW645123645123ABCDEFGHABCDEFGHFigure S-5. Printed Wiring Board of Power Unit1121137429CN - CD1(D2)(D3)SP1OMDURY2XAVHCN - ASH - BS

33R-308DWR-310DKR-310DW**∆**∆∆PARTS LISTNote: The parts marked “∆” may cause undue microwave exposure.The parts marked “*” are used in voltage more th

34R-308DWR-310DKR-310DWHOW TO ORDER REPLACEMENT PARTSTo have your order filled promptly and correctly, please furnish the following information.1. MOD

35R-308DWR-310DKR-310DW645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS7-57-87-57-81-106-72-14-134-171-114-144-21-127-17-51-74-211-87-37-31-137-64-1

36R-308DWR-310DKR-310DW645123645123ABCDEFGHABCDEFGHCONTROL PANEL PARTSDOOR PARTSMISCELLANEOUSActual wire harness may be different from illustration.6

37R-308DWR-310DKR-310DW645123645123ABCDEFGHABCDEFGHPACKING AND ACCESSORIESDOOR PROTECTION SHEETSPADPA204WRE0TOP PAD ASSEMBLYFPADBA416WRKZPLASTIC BAGSS

2R-308DWR-310DKR-310DWMICROWAVE MEASUREMENT PROCEDUREA. Requirements:1) Microwave leakage limit (Power density limit): The power density of microwave

38R-308DWR-310DKR-310DW20' SHARP CORP. (1S2.530E) Printed in U.S.ACOPYRIGHT © 2000 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this public

3R-308DWR-310DKR-310DWSHARP ELECTRONICS CORPORATIONSHARP PLAZA, MAHWAH,NEW JERSEY 07430-2135SERVICE MANUALMICROWAVE OVENR-308DW/ R-310DK/ R-310DWFOREW

4R-308DWR-310DKR-310DWITEM DESCRIPTIONPower Requirements 120 Volts / 14 Amperes60 HertzSingle phase, 3 wire groundedPower Output 1150 watts (IEC TEST

5R-308DWR-310DKR-310DWcontact a qualified electrician and have it replaced with a properlygrounded three-pronged wall receptacle or have a grounding a

6R-308DWR-310DKR-310DWOPERATIONDESCRIPTION OF OPERATING SEQUENCEThe following is a description of component functions duringoven operation.OFF CONDITI

7R-308DWR-310DKR-310DWFigure O-1. Oven Schematic-Off ConditionSCHEMATICNOTE: CONDITION OF OVEN1. DOOR CLOSED2. CLOCK APPEARS ON DISPLAYSCHEMATICNOTE: