Sharp R-9200 Service Manual Download Page 17 | Manualshive

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Summary of Contents for R-9200

Page 1: ...er with the Base Model Service Manual Refer to the Base Model Service Manual for complete operation service information etc RD17101U TABLE OF CONTENTS Page APPEARANCE VIEW Inside front cover GENERAL IMPORTANT INFORMATION 1 CAUTION MICROWAVE RADlATlON WARNING 1 PRODUCT SPECIFICATIONS 2 OPERATION 3 FUNCTION OF IMPORTANT COMPONENTS 4 SERVICING 5 TEST PROCEDURE 6 TOUCH CONTROL ASSEMBLY 13 COMPONENT RE...

Page 2: ...perature or to select the Intelligent Sensor menus POWER LEVEL PADS Press to select microwave power setting If not pressed HIGH is auto matically selected STOP CLEAR PAD Press to erase during pro gramming Press once to stop operation of oven during cooking press twice to cancel cooking pro gramme AUTO I START CLOCK PAD Press to set clock or Auto Start time SENSOR INSTANT ACTION PADS Press once to ...

Page 3: ...he device without a microwave energy absorbing load attached Never look into an open waveguide or antenna while the device is ener gized RD36203U WARNING Never operate the oven until the following points are ensured A The door is tightly closed B The door brackets and hinges are not defective C The door packing is not damaged D The door is not deformed or warped E There is not any other visible da...

Page 4: ...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 Convection Temperature for Variable Cooking CONVECTION 40 to 250 C Temp control LOW M IX BAKE 180 C with 10 microwave power HIGH MIX ROAST m GRILL 200 C with 30 microwave power 250 C I...

Page 5: ...nce the oven is started in micro wave cooking condition The oven will stop its operation when the difference of the voltage is more than 0 3 volts in microwave cooking condition 1 2 3 4 Within a 32 second base first thermistor is ener gized for 3 seconds After 2 seconds since the thermistor is energized the voltage across the tem perature measurement circuit is measured And af ter 21 seconds since...

Page 6: ... on the turntable the gap between the elctrodes increases in direct pro portional to the weight of food The elctrodes have the function of a capacitor 2 The frequency of the oscilator changes according to the capacitance of the weight sensor 3 The micro computer meas ures the weight of food by detecting the change in the oscilating frequency ...

Page 7: ...he power transformer REMEMBER TO CHECK 4R 1 Reconnect all leads removed from components during testing 2 Replace the outer case cabinet 3 Reconnect the supply 4 Run the oven Check all functions Microwave ovens should not be run empty To test for the presence of microwave energy within a cavity place a cup of cold water on the oven turntable close the door and set the microwave timer for two 2 minu...

Page 8: ...es not operate Cooling fan motor does not operate After start pad is touched the oven stops and display shows ADD TURN TABLE Oven does not go into cook cycle when START pad is touched Oven seems to be operating but little MICROWAVE or no heat is produced in oven load Food in completely cooked or not cooked at all at end of cook cycle Oven goes into a cook cycle but extremely un even heating is pro...

Page 9: ... L E 8 wk 52 EE R z CK z 8 yi E N ig ii 2 3 T I I r r i 0 ER 4 Y d I J 0 FI t F A 1 A 52 1 E f R i 3 d 3 1 3 1 1 1 I 1 77 F ii T Es F iz 2 ii L Y 3 1 1 FT 3 ki ifi is G d 1 d Tit t Nu hJ 1 I 5 ER 4 F 4 J 0 ER ti t i a S ii ifi I I 4 i Y J 2 3 d J 1 2 1 3 2 2 7 7 ...

Page 10: ... heating 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 AT t Our condition for the water load is as follows Room temperature around 20 C Power supply Voltage Rated voltage Water load 2000 ml Initial temperature 1O 1 C Heating time 1min 45 sec P 80xAT Measuring method A Use two 1 litre Pyrex beakers with a diameter of approximately of 12cms B Plac...

Page 11: ...ameter of approximately 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 2 C 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 d...

Page 12: ...ding of the power transformer It is very dangerous to work near this part when the oven is on NEVER make any voltage measurements of the high voltage circuits including the magnetron filament CARRY OUT 3D CHECKS Disconnect the leads to the primary winding of the power transformer Drsconnect the filament and secondary winding connections from the rest of the HV circuitry Using an ohmmeter set on a ...

Page 13: ...or Coolina fan motor P PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD PWB IS OPEN To protect the electronic circuits this model is provided with a fine foil pattern added to the primary on the PWB this foil pattern serves as a substitute coil If the foil pattern is open follow the troubleshooting guide given below for repair Problem POWER ON indicator does not light UD ST...

Page 14: ... the POWER LEVEL pad Display shows fl 0 7 Press the INSTANT COOK START pad Display shows TEST with sound of buzzer 8 Press the 4 of number pads Display shows N DISH and oven lamps come on with sound of buzzer and tuntable 9 After 13 seconds make sure that the display shows 25000 35000 with sound of buzzer If display shows less than 25000 or more than 35000 weight sensor 10 Place the weight 2 Kg 2O...

Page 15: ...available in order to compose a basic standard time in the clock circuit It incorporates a very small error because it works on commercial frequency 4 5 6 1 7 8 9 ACL Circuit A circuit to generate signals resetting the LSI to the initial state when power is applied Buzzer Circuit The buzzer is responds to signals from the LSI to emit noticeable sounds key touch sound and completion sound Temperatu...

Page 16: ...I O IN Temperature measurement input OVEN THERMISTOR By inputting DC voltage corresponding to the temperature detected by the thermistor this input is converted into temperature by the A D converter built into the LSI RD935Al U PIN NO j 8 1 SIGNAL j IN1 I I O IN AH sensor input This input is an analog input terminal from the AH sensor circuit and connected to the A D converter built into the LSI R...

Page 17: ...ng signal To turn on and off the heater relay RY3 L level during convection cooking H level otherwise During convection cooking the signal becomes H level when the temperature of the oven cavity exceeds the predetermined tem perature PIN NO 21 1 SIGNAL 1 P34 I I O j OUT Convection motor driving signal To turn on and off the shut off relay RY5 L level during CONVECTION H level otherwise PIN NO 1 22...

Page 18: ...t of XIN PIN NO 1 30 1 SIGNAL XCIN I I O 1 IN Weight sensor data input PIN NO 31 I 1 SIGNAL 1 XCOUT I I O OUT Terminal not used PIN NO 1 32 1 SIGNAL 1 VSS I I O j IN Power source voltaqe 5V VC voltage of power source circuit input PIN NO 1 33 1 SIGNAL 0 I l O OUT Terminal not used PIN NO 34 1 SIGNAL R3 I I O IN Siqnal cominq from touch kev When any one of G l line keys on key matrix is touched a c...

Page 19: ...6 Kev strobe signal Signal applied to touch key section A pulse signal is input to RO R3 terminal while one of G 5 line keys on key matrix is touched RD939A3U PIN NO 1 43 1 SIGNAL 1 PI3 I I O 1 OUT Segment data siqnal Key strobe signal Signal similar to PI 6 Signal applied to touch key section A pulse signal is input to RO R3 terminal while one of G 6 line keys on key matrix is touched RD939A3U PI...

Page 20: ...s touched RD939A3U 1 SIGNAL 1 P27 I I O OUT RD938A2U PIN NO 1 56 1 SIGNAL j P26 I I O j OUT Segment data signal Signal similar to PI 6 RD939A2U PIN NO 1 57 1 SIGNAL j P25 I I O OUT Serrment data sianal Key strobe signal Signal similar to PI 6 Signal applied to touch key section A pulse signal is input to RO R3 terminal while one of G 10 line keys on key matrix is touched RD939A3U PIN NO 58 1 SIGNA...

Page 21: ... seconds clearing cycle occurs than the detector circuit starts to function and the LSI observes the initial voltage available 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 R50 1 Changing the resistance values results in that there is the same potential at both F 3 terminal of the absol...

Page 22: ...ted ones included of the touch control panel while keeping it connected to the oven 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...

Page 23: ...G OUTER CASE DISCHARGE HIGH VO LTAG E CAPACITOR BEFORE TOUCHING ANY OVEN COMPO NENTS OR WIRING RDAI 203U OUTER CASE REMOVAL To remove the outer case proceed as follows 3 1 2 3 4 Disconnect oven from power supply retaining clips on the cavity face plate Remove the eight 8 screws from rear and along 5 Lift the entire case from the oven the side edge of case CAUTION DISCHARGE HIGH VO LTAG E Remove th...

Page 24: ...wave ovens must be used for testing Recommended instruments are NARDA 8100 NARDA 8200 HOLADAY HI 1500 SIMPSON 380M 2 Place the oven tray into the oven cavity 3 Place the load of 275 l 5ml of water 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 an electrically non conductive material such ...

Page 25: ...tip SCEMATIC NOTE CONDITION OF OVEN I 1 DOOR CLOSED 2 COOKING TIME PROGRAMMED 3 VARIABLE COOKING CONTROL HIGH 4 START PAD TOUCHED r i L T uaz 419 r 7 L J yt i I c I r I GJ i _ i 1 if j g 0 t L J 6 z I4 iI b ii 77 i Figure O 2 Oven Schematic High or Defrost Sensor Cooking Condition 23 ...

Page 26: ...N I I f6p 5 Figure O 3 Oven Schematic Convection Cooking Condition SCEMATI C NOTE CONDITION OF OVEN r e m I 1 i _ i 8 EXE 2 ifi r 7 L J h P 7 4 1 2 iif I 1 3 tJ 0 tl i i 7 Figure O 4 Oven Schematic Automatic Mix Cooking Condition 24 ...

Page 27: ...1 2 3 4 5 6 I P 6 C E F G H Figure S l Pictorial Diagram 25 A 9 C D E F G H ...

Page 28: ...I t ASE d0001 23 I m AOE dl O 13 s 2 e 3 Ed R HI Ed II 1 2 3 4 5 6 t CI I z k _ 0 in 75 I 5 _ 5 I CL iI I II I 5 I i E 3 n E q 22 I 4 A ii dI f gl 9 f YiiGG l E S knL r wn c I L 1 s I 4 I 5 6 26 ...

Page 29: ...R 9Zoo A 0 C D E F G H 1 2 3 1 4 5 6 I r 1 I I I l RY6 x a m Y 4 Figure S 3 Printed Wiring Board _ ___ I 1 2 3 4 5 6 27 ...

Page 30: ...former AG l 22 RV MZA114WREO Magnetron BQ 1 23 FDTCTA126WRKO AH sensor assembly 1 AX CABINET PARTS I 2 FDAI A153WRYO Base plate assembly 1 AX FHNG A092WRMO Oven hinge lower 1 AF 2 3 GCABDA037WRWO Rear cabinet 1 AT 2 4 GCABUA277WRPO Outer case cabinet 1 BA 2 5 GCOVHA280WRPO Turntable motor cover 1 AC 2 6 GFTARAOOlWRWO Oven lamp access cover AC 2 7 GLEGPA034WREO Foot ii AB 2 8 LANGK0243WRPO Capacito...

Page 31: ... 7kn 1 4W R48 VRD B12EF103J Resistor 10ko 1 4W R49 63 VRD B12EFlOlJ Resistor 1OOR 1 4w R68 70 R51 VRS B13AA331J Resistor 33on 1w R62 VRN B12EK753F Resistor 75kn F 1 4W R64 VRN B12EK222F Resistor 2 2kO F 1 4W R71 VRD B12EF512J Resistor 5 lkfi 1 4W R80 VRD B12EF471J Resistor 4700 1 4w R200 VRD B12EF105J Resistor 1MR 1 4W RYl RRLY A084DREO Relay AJX3236 COl RY2 3 RRLY A077DREO Relay OMI SH 118LM RY4 ...

Page 32: ...ley M NPLYBA025WRFO Pulley M NSFTTA043WREO Damper shaft NTNT A019WRHO Turntable tray PCOVPA157WREO Waveguide cover PCOVPA167WRFO AH sensor cover R 9H52 only PCUSGA211WRPO Transformer cushion D PCUSUA146WRPO Magnetron duct cushion PCUSU0263WRPO Cushion PCUSU0329WRPO Cushion PCUSU0380WRPO Steam cushion C PDUC A267WRPO Heater duct PDUC A269WRWO Damper duct PDUC A270WRFO Cooling fan duct PFPF A138WREO...

Page 33: ...WW40P06000 XCPSD30P06000 XCPSD30P08000 XCPSD40P08000 XCTSD40P08000 XFPSD30P08000 Screw M4 x 25 Screw M4 x 30 Screw M4 x 6 Screw M4x 6 Screw M3x 6 Screw M3x 8 Screw M3 x 8 Screw M4x 8 Screw M4x 8 Screw M3 x 10 zinc plated steel zinc plated steel stainless steel chromium zinc plated steel zinc elated steel zinc plated steel zinc plated steel zinc plated steel zinc plated steel XFPSD40P08KOO Screw M4...

Page 34: ...1 2 3 4 5 6 F 2 5 zi 2 3 5 t 2 t 2 z a 0 1 2 3 4 5 6 32 ...

Page 35: ...CONTROL PANEL PARTS 6 14 0 DOOR ASSEMBLY 5 2 P A F _ I 1 2 3 4 5 6 ...

Page 36: ...ness may be different than illustration PACKING AND ACCESSORIES E PACKING ADD KIT l CPADBAO83WRKO DOOR PROTECTION SHEET HIGH RACK OPERATION RACK 1 DOOR PAD I _i H l SPADF0341 WREO obbb TRAY PACKING FOAM lSPADPA453WREO 1 2 l Not replaceble items 3 4 5 6 __F 92 0 SHARP CORP 03k0 73F ...

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