Sharp R-5H53 Service Manual Download Page 1 | Manualshive

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Summary of Contents for R-5H53

Page 1: ...IDE COVER GENERAL IMPORTANT INFORMATION _ I CAUTION MICROWAVE RADIATION WARNING 1 PRODUCT SPECIFICATIONS 2 OPERATION SEQUENCE 3 FUNCTION OF IMPORTANT COMPONENTS 4 SERVICING 5 TEST PROCEDURE TOUCH CONTROL ASSEMBLY COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDl MICROWAVE MEASUREMENT WIRING DIAGRAM PICTORIAL DIAGRAM 6 16 RE 23 27 28 29 CONTROL PANEL CIRCUIT 30 PRINTED WIRING DIAGRAM 31 PARTS LIST 32 PA...

Page 2: ...l j L Touch to erase during pro gramming Touch once to stop operation of oven during cooking touch twice to cancel cooking pro gramme SENSCG C03K Ross bee Z qoast lamb cioast zh1cke n 1 c 4 Lorned nea 5 Desserts 0 Cake Pudciric 7 Stewed iruc b Preserves iI I 9 Bacon lC Porrlcge ii 6 1 11 SOUP It 12 Casserole 3 Fish fillets j 7 i 1 4 Fice I J 15 Pasta 16 Frozen o nners l Pastrces js MEMaRY I Place ...

Page 3: ...s a3 Aap ayl al m euuaiue Jo apln6anem uado ue o u yoo JaAaN pay3el e peoi 6u Sqe A6Jaua aAenlion t u e Inoyl m ayr ap ayr a eJadO JaAaN psJn3as aq lsnw slayse6 pue sa6uelJ sapin6aAeM suo i auuo aAeMolD Lu lndlno pue lndu 11 paisauuo Jo pasn AjJadcJdut s li 4 sa3iAap fju lcJaua aAeMoJD u Jay10 JO uo lau6eur ayi UJGJ ale peJ AeL u yZ y A6Jaua aAeM OJS LC ayl 0 pasodxa aq IOU pinoqs sJaau Bua a3 nJa...

Page 4: ...Control Complement Width 406 mm Height 248 mm Depth 422 mm Touch Control System Clock I 00 12 59 Timer 0 99 min 99 sec Microwave Power for Variable Cooking Repetition Rate HIGH Full power throughout the cooking time MED HIGH approx 70 of Full Power MED approx 50 of Full Power MED LOW DEFROST approx 30 of Full Power LOW approx 10 of Full Power SENSOR COOK Fresh 1 I 5 Frozen 11 17 INSTANT COOKSTART ...

Page 5: ...s placed to be cooked 5 Upon completion of the cooking time the power transformer oven lamp etc are turned off and the generation of microwave energy is stopped The oven will revert to the OFF condition 6 When the oven door is opened during a cooking cycle the monitor switch upper and lower latch switches are activated with the followrng resuits The crrcuits to the turntable motor fan motor and hi...

Page 6: ...condition contacts open due to their being normally open contact switches 2 As the door goes to a closed position the monitor switch contacts are opened first and then the con tacts of upper and lower latch switches close On opening the door each of these switches operate tnverselv 3 If the door is opened and the contacts of the upper latch switch and lower latch switch fail to open the fuse blows...

Page 7: ... 3 3 checks and reconnect the leads to the primary of the power transformer REMEMBER TO CHECK B 11 Reconnect all teads removeo fro m car D 2 2 c _ during testing 2 Replace the ourer case i catsl nel 3 Reconnect the suppiy a Run the oven Checic ail ftii ct cr s Microwave ovens should not be ru rn T l 0s for the presence of m Zrovvave 3nerf v JV s 3 cavltjf p aca a czg of CsiC a 2 r e 3 r urc table ...

Page 8: ...or breaker operates when the IN STANT COOK START pad is touched oven seems to be operating but little or no heat is produced in oven load Microwave cooking control is set at FULL POWER position Oven does not cook properly when programmed for variable cooking powers Oven operates properly at FULL POWER Oven goes into cook cycle but shuts down before end of cooking cycle Oven stop as soon as when th...

Page 9: ... c d u V i t iFi L A M P A N 3 k F Q V x 4 ii S i i 0 F E y H A R N z u e L I u r 4 n d 3 ZK z z E D w i H i x E s s c n LA 3 5 hi A i 0 Y iJ 5 7 V 5 I E F TJ s E 0 2 I E 3 E W s 0 i T r s __ 3 3 cx M A D J g s ti 7 Ii q d A u 1 V m w r L w 4 __ 7 ...

Page 10: ...period the calorie of the water is V x AT The formula is as follows P x t 4 2 V x AT P W 4 2 x V x CIT t Cld rcondition for the water load s as follows Room temperature around 20 C Water load 2300 mi Initial temperature Power supply Voltage Rated voltage IO 1 C P 75 x CT Heating time 1min 52 sec I Vieeasurin method Li i Use two i iitre Pyrex beakers with a diameter of approximately of 72cms 51 Pla...

Page 11: ...imately 190 mm 2 Temperature of the oven and vessel The oven and the empty vessel are at ambient temperature prior to the start of the test 3 Temperature of the water The initial temperature of the water is 10 f 2 X 4 Select the initial and final water temperature so that the maximum difference between the final water temperature and the ambient temperature is 5 C 5 Select stirring devices and mea...

Page 12: ... 3 lT 32 CHECKS Disconnect the leads to the primary winding of the power transformer Disconnect the filament and secondary winding connections from the rest of the HV circuitry Using an ohmmeter set on a low range it is possible to check the continurty of al three windings The following readings shouid be obtained a Primary wrnding less than 7 5 ohms 5 Secondary winding 80 ohms c Filament wending ...

Page 13: ...NITE RESISTANCE MIGHT BE SHC VN iiN BGik DIRECTIONS G x 4rOL3 d D HIGH VOLTAGE CAPACITOR TEST CARRY OUT 30 CHECKS A B C D E F G Isolate the high voltage capacitor from the circuit Continuity check must be carried out with measuring instrument which is set io the highesT resistance range A normal capacitor shows continuity for a short time kick and then a resisiance of about 10 MR after it has been...

Page 14: ...dicates a open err cuit replace the temperature fuse and check for restricted air flow to the magnetron through the opening In the chassis especrally the air duci ant fan motor CARRY OUT R CHECKS THERMAL CUT OUT TEST CARRY OUT 3D CHECKS A continuity check across the thermal cut out terminals sould indicate a closed circuit If the temperature of the steam duct reaches approximately 115 C the therma...

Page 15: ...oduces no signal at ail b When touching a number pad two figures or more are displayed c When touching the pads sometimes a pad produces no signal 2 Control Panel The following symptoms indicate a defective control unit Replace the controi unit 2 l tn connection with pads a When touching the pads a certain group of pads do not produce a signal b When touching the pads no pads produce a signal 2 2 ...

Page 16: ...ndicator does not light up __ ____ __ ZTEPC Lj i OCC JRRENCE CAL SE OR CORRECTION __ 7 TL ____ I I e rated vo tage IS no apolled to POWER terminal Check supply voltage and oven main unit si CPU connector CN A ____ ___ _ Therated voltage IS spoiled to pr mar srde of power Power transformer or secondary cIrcuIt defective transfcrmer Check and repair ____ 3nli latterr a a IS broken inser lumper wire ...

Page 17: ...r check the control unit refer to explanation below TESTING METHOD FOR AH SENSOR AND OR CONTROL UNIT To determine if the sensor is defective the simplest method is to replace it with a new replacement sensor 1 Disconnect oven from power supply and remove outer case 2 Discharge the high voltage capacitor 3 Remove the AH sensor 4 Install the new AH sensor 5 Re install the outer case 6 Reconnect the ...

Page 18: ... driving signai for oven function and indicator sig nal 2 Power Source Circuit This circuit generates contra unit voltage necessary in the Symbol Voltage Application VC 5 ov VP LSI ICI ACL circuit 26V Fluorescent display tube Grid VF 3Vac and anode voltage Filament of fluorescent display VF tube VF to VF C voltage 3 4 5 fi 71 8 9 Synchronizing Signal Circuit The power source synchronizing signal i...

Page 19: ... converter built into the LSI i c1 t u__r PIN NO 9 ___ __7z G lpIN0 _ _ T IN Used for initial balancing of the bridge circuit absoiu e humidity sensor This input s an anal05 i rermlnai from the AH sensor circuit and connected to the A D converter burit into the LS PIN NO IO 14 1 SIGNAL P47 P43 __ __ _ L i O OUT _ Used for initial balancing of the bridge circuit absolute humidity sensor PIN NO 15 l...

Page 20: ...c PO2 t b PO a moq 1 i JxrKI z 2w PIN NO 42 1 SIGNAL PI4 I I O OUT Seqment data siqnil Signal similar to PI 5 Key strobe siqnai Signal applied to touch key section A pulse signal is input to RO R3 terminal while one of G l line keys on key matrix is touched RD939A3U1 PIN NO i 43 1 SIGNAL PI3 I I O OUT Seqment data siqnal Signal similar to PI 5 RD939AZUl PIN NO 44 Segment data signal Signal similar...

Page 21: ...lar to PI 5 Signal applied to touch key section A pulse signal is input to RO R3 terminal while one of G 7 line keys on key matrix is touched RD939A3U PIN NO 52 53 1 SIGNAL 1 PO2 PO1 I l O I OUT Segment data signal Signal similar to PI 5 RD939A2U PIN NO 54 _____ 1 SIGNAL PO0 I i O OUT Diqit selection signal The relation between digit signal and digit are as follows Digit signal Digit P23 1 st 334 ...

Page 22: ...it to allow the LSl to control the sensor cooking of the unit When the unit is set in the sensor cooking mode 16 seconds later the detector circuit starts to func tion and the LSI observes the initial voltage avail able at its IN1 terminal With this voltage given the switches SW1 to SW5 in the LSI are turned on in such a way as to change the resistance values in parallel with R l Changing the resi...

Page 23: ...it connected to the oven B On some models the power supply cord be tween the touch control panel and the oven proper is long enough that they may be sepa rated from each other For those models therefore it is possible to check and repair the controls of the touch control panel while keeping it apart from the oven proper in this case you must short both ends of the door sensing switch on PWB of the...

Page 24: ...s 9 A pp HIGH VOLTAGE COMPONENTS REMOVAL HIGH VOLTAGE CAPACITOR AND HIGH VOLTAGE RECTIFIER ASSEMBLY To remove the comoonents oroceed as foilows 3 4 5 CARRY OUT CHECKS Remove one 1 screw holding capacitor hoider to oven unit Remove one I screw holding earth side termfnai of rectifier ass y and remove capacitor holder Disconnect wire leads and terminal of high voltage rectifier assembly from high vo...

Page 25: ...AND MONITOR SWITCH REMOVAL 1 CARRY OUT 3D CHECKS 2 Disconnen Lo wire leads from switches 4 Remove upper latch hook from fiange by moving it downward 3 Remove one 1 screw holding the upper latch 5 To remove the switch from upper latch hook push hook to the oven cavity flange outward two i 2j retaining tabs holding individual switch in place LOWER LATCH SWITCH STOP SWfTCH AND LATCH SWITCH REMOVAL 1 ...

Page 26: ...ith the two 2 mounting screws 7 Make sure door is parallel with oven face lines left and upper side lines and the door latch heads pass through the latch holes correctly Note After any service to the door A Make sure that the upper latch switch lower latch switch and latch switch are operating properly 4 Re install outer case ant cneck ior mtc owa fe leakage around the door with an approved T I c ...

Page 27: ...p the choke cover Now the choke cover is free from the door panel Remove the latch spring from the door panel Pushing up the latch head it is now free from door panel R n FLAT TVCE EcnLw oaIVEa IiF WOlECl lv TAPE Latch Head Remove and Door Disassembly POSITIVE LOCK CONNECTOR NO CASE TYPE REMOVAL Push the lever of positive lock connector Pull down on the positive lock connector Termicul CAUTION WHE...

Page 28: ...vens must be used for testing Recommended instruments are NARDA 8100 NAR DA 8200 HOLADAY HI 1500 SIMPSON 380M 2 Place the oven tray into the oven cavity 3 Place the load of 275 l 5ml of swater initially at 20 5 C in the centre of the oven tray The water container should be a low form of 600 ml beaker with inside diameter of approx 8 5cm and made of MEASUREMENT an electrically non conductive materi...

Page 29: ...Condition SCEMATIC NOTE CONDITION OF C VEN 1 DOOR CLOSED 2 COgKiNG TIIME PROGRAMMED 3 VARlABLE COOKING CONTROL hIGH i START I2 O JCHIED SCEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED FRESH OR FROZEN PAD TOUCHED 5 DESIRED SENSOR SETTING NO TOUCHED 4 START PAD TOLlCHED _____ I L 0 aa i 0 IzL g 2E r r 1 I L 3 i J 8 84 z Figure O 2 Oven Schematic Cooking or Sensor Cooking Condition 28 ...

Page 30: ...U j CN WHT j 1 d H V C WHT WHT k I II 4 CAB SIDE RED CN A EEI 1 I q UUO 1 3 i 7 1 E4 I OVEN THERMAL MP f PNK CUT OUT FUSE NO GRN t OVEN CAVITY SIc E a COM Y STOP E SWITCH I 2 t I t IU _ __ _ CN B CAHTEII 1 I I lH V RECTIFIER P4 t e l is Positive lock connector T1 YELLOW lead wire may be Pink a Figure S l Pictorial Diagram I 0 _ _I __ n m 0 I C m Y u YI l 1 LI1 yyIIY b II_ L 1 ...

Page 31: ...R 5H53 I I I I I i i 5 g I L p g 1 I fZ 1 1 WV 1 I 1 SO W s t 0 dp F2 j IJ SE dOOOl 13 i gi 65 Zi I h i i 1 2 3 4 5 6 30 ...

Page 32: ...1 2 3 4 5 6 Cll Figure S 3 Printed Wiring Board I 1 I 2 3 I I 4 I 5 6 31 ...

Page 33: ...FO Cord anchorage Upper 1 AA 2 7 LSTPP0066WRFO Cord anchorage Lower AA 2 8 LANGQ0382WRMO Earth angle t AB 2 9 PCUSGAlGOWREO Vibration proof cushion 1 AD 2 10 PCUSGA24OWRPO Vibration cushion 1 AD CONTROL PANEL PARTS 3 1 CPWBFA470WRKO Control unit Not Replaceble Item 1 3 1A QCNCMA23ODREO 4 pin connector A BQ 3 1B QCNCMA275DREO 2 pin connector B 3 1c QCNCMA145DREO 3 pin connector F 3 1D QCNCWA030DREO...

Page 34: ...WRFO Control panel frame 3 3 DUNTKA491WRKO Key unit assembly 3 4 JBTN A710WRFO Open button 3 5 MSPRDA003WREO Open button spring 3 6 XEPSD30PlOXSO Screw Control unit mounting OVEN PARTS AA BN AN AV AF AA AC AB AD AD AD AD AA AM AH AH AE AA AE AM AK AB AA AB AB AD AA 4 1 4 2 4 3 4 4 4 5 DOVN A171WRTO Oven cavity FROLPA036WRKO Roller stay NTNT AOOlWRFO Turntable tray PCOVP0279WREO Waveguide cover PCL...

Page 35: ...2WREO Special screw XOTSD40P12000 Screw M4 x 12 LX EZA004WREO Special screw LX BZ0174WREO Special screw XFPSD30P14000 Screw M3 x 14 zinc plated steel XFPSD40PlOOOO Screw M4 x 10 zinc plated steel XHTSD40P08RVO Screw M4 x 8 zinc plated steel XFPSD40PlOKOO Screw M4 x 10 zinc plated steel XNESD40 32000 Nut M4 x 3 2 zinc plated screw XHPSD40P08KOO Screw m4 x 8 zinc plated steel XWWSDSO 06000 Washer MS...

Page 36: ...R 5H53 1 I 2 3 4 5 6 OVEN PARTS 1 2 3 4 5 6 35 ...

Page 37: ...R 5H53 I B I I i cl I D E F G H i 1 2 3 4 5 6 __ __ CABINET PARTS 1 2 3 4 5 6 36 ...

Page 38: ...R 5H53 1 2 I 3 I 4 5 6 CONTR I OL PANEL PARTS C 0 3 4 DOOR ASSEMBLY H 1 I 2 3 4 5 6 37 ...

Page 39: ...itor Transformerj l Actual wire harness may be different than illustration PACKING AND ACCESSORIES l TRAY HOLDER SPADFA075WRE ___I_ jH RAY PACKING FORM i 1 SPADPAi 28WREO l Not replaceable items 91 0 SHARP CORP 9k0 55E Printed in Australia 38 ...

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