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R-2397

MAGNETRON THERMAL CUT-OUT 145˚C TC1

MAGNETRON THERMAL CUT-OUT 145˚C TC2

B. MOTOR THERMAL CUT-OUT 115˚C TC3

OVEN THERMAL CUT-OUTT 115˚C TC4

MONITOR RESISTOR R1

STIRRER MOTOR

MAGNETRON THERMISTOR

EXHAUST THERMISTOR

INTAKE THERMISTOR

OVEN LAMP OR SOCKET

BLOWER MOTOR

NOISE FILTER

POWER SUPPLY CORD

FUSE HOLDER

SHORTED WIRE HARNESS

OPENED WIRE HARNESS

TOUCH CONTROL PANEL

RELAY RY-1, RY-3, RY-4

FOIL PATTERN

BLOCKED VENTILATION OPENINGS

BLOCKED BLOWER MOTOR

MIS ADJUSTMENT OF SWITCHES

HOME FUSE OR BREAKER

NO POWER AT WALL OUTLET

OVER THE MAX. COOKING TIME

DUE TO PROGRAMME LOCK

TEMPERATURE OF EXHAUST THERMISTOR IS HIGH

TEMPERATURE OF INTAKE THERMISTOR IS HIGH

TEMPERATURE OF MAGNETRON THERMISTOR IS HIGH

BLOCKED STIRRER ANTENNA

KEY UNIT

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L

K

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N

P

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Содержание R-2397

Страница 1: ...5 SERVICING 7 TEST PROCEDURE 10 TOUCH CONTROL PANEL ASSEMBLY 17 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 24 MICROWAVE MEASUREMENT 29 WIRING DIAGRAM 30 PICTORIAL DIAGRAM 31 CONTROL PANEL CIRCUIT 32 PRINTED WIRING BOARD 33 PARTS LIST 34 S5708R2397H X In interests of user safety the oven should be restored to its original condition and only parts identical to those specified should be used COMM...

Страница 2: ...R 2397 ...

Страница 3: ...ergy absorbing load attached Never look into an open waveguide or antenna while the device is energized 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 damage with the oven Servicing and repair wo...

Страница 4: ...plement Touch Control System The combination of cooking time and microwave power The oven can be programmed a series of up to 3 cookling stages The combination of microwave power and cooking time that can be input as folllows Cooking Micrwave power level Sequence that can be used Cooking time that can be iused 1 Stage only 0 100 Max 30 minutes 0 40 all stages Max 30 minutes any stages Max 60 minut...

Страница 5: ...emory number indicator 3 Defrost indicator 4 Check mode indicator 5 Power level display 6 Time display 7 Filter indicator 8 Double quantity mode indicator 9 3rd stage indicator 10 2nd stage indicator 11 1st stage indicator OPERATING KEYS 12 DOUBLE QUANTITY key 13 DEFROST key 14 NUMBER keys 15 MANUAL REPEAT key 16 STOP CLEAR key 17 MICROWAVE POWER SETTING key 18 START key 19 SET key 20 VOLUME key 2...

Страница 6: ...pen 3rd latch switch COM NO Closed Open The circuits to the high voltage transformers are cut off when the 1st latch 2nd latch 3rd latch and stop switches are made open The blower motor stirrer motors and oven lamp remains on even if the oven door is opened after the cooking cycle has been interrupted because OPERATION SEQUENCE the relay RY1 stays closed Shown in the display is the remaining time ...

Страница 7: ...itor switch NOISE FILTER The noise filter assembly prevents radio frequency inter ference that might flow back in the power circuit WEAK POINT Ifthewireharnessorelectricalcomponentsmakeashort circuit this weak point blows to prevent an electric shock or fire hazard DOOR OPEN MECHANISM 1 The door release lever is pulled 2 The upper latch head is lifted up by the linked door release lever 3 The latc...

Страница 8: ...foods It is then exhausted through the exhausting air vents at the oven cavity STIRRER MOTOR The stirrer motor drives a stirrer antenna to stir the microwave radiation from the waveguide FUSE F6 3A 250V 1 If the wire harness or electrical components are short circuited this fuse blows to prevent an electric shock or fire hazard 2 The fuse also blows when 1st latch switch remains closed with the ov...

Страница 9: ... out 3D checks and reconnect the leads to the primary of the high voltage transformer When all service work is completed and the oven is fully assembled the microwave power output should be checked and microwave leakage test carried out 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 ...

Страница 10: ...not work Blower motor does not work Oven does not stop after end of cooking cycle or whenSTOP CLEARkeyistouched Ovenlamp blower motor and stirrer motors stop Home fuse blows when starting the oven Oven goes into cook cycle but shuts down before end of cooking cycle Oven seems to be operating but no heat is produced in oven load It passed more than 1 minute after cooking but oven lamp blower motor ...

Страница 11: ... POWER SUPPLY CORD FUSE HOLDER SHORTED WIRE HARNESS OPENED WIRE HARNESS TOUCH CONTROL PANEL RELAY RY 1 RY 3 RY 4 FOIL PATTERN BLOCKED VENTILATION OPENINGS BLOCKED BLOWER MOTOR MIS ADJUSTMENT OF SWITCHES HOME FUSE OR BREAKER NO POWER AT WALL OUTLET OVER THE MAX COOKING TIME DUE TO PROGRAMME LOCK TEMPERATURE OF EXHAUST THERMISTOR IS HIGH TEMPERATURE OF INTAKE THERMISTOR IS HIGH TEMPERATURE OF MAGNET...

Страница 12: ... having a maximum material thickness of 3 mm and an outside diameter 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 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 tempera...

Страница 13: ...ect 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 continuity of all three windings The following readings should be obtained a Primary winding approx 1 06 Ω b Secondary winding approx 57 3 Ω c Filament winding less than 1 Ω If the reading obtained are not stated as above then the high voltage transf...

Страница 14: ...ed O C S C NC Normally close terminal Depressed S C O C S C Short circuit O C Open circuit If incorrect readings are obtained make the necessary switch adjustment or replace the switch CARRY OUT 4R CHECKS D HIGH VOLTAGE CAPACITOR TEST CARRY OUT 3D CHECKS A Isolate the high voltage capacitor from the circuit B Continuity check must be carried out with measuring instrument which is set to the highes...

Страница 15: ...FF Indication of ohmmeter Parts Name condition closed circuit condition open circuit When room temperature C C is approx 20 C Thermal cut out 145 C This is not resetable type Above 145 C Closed circuit Thermal cut out 115 C This is not resetable type Above 115 C Closed circuit If incorrect readings are obtained replace the thermal cut out An open circuit oven thermal cut out 115 C indicates that t...

Страница 16: ...ace the thermistor CARRY OUT 4R CHECKS INTAKE THERMISTOR TEST CARRY OUT 3D CHECKS Disconnect connector D from the CPU unit Measure the resistance of the thermistor with an ohmmeter Connect the ohmmeter leads to the leads of the thermistor Room Temp Resistance 15 C Approx 15 88 kΩ 20 C Approx 13 03 kΩ 25 C Approx 10 74 kΩ If the meter does not indicate above resistance replace the thermistor CARRY ...

Страница 17: ...c Only one indicator does not light d The corresponding segments of all digits do not light up or they continue to light up e Wrong figure appears f A certain group of indicators do not light up g The figure of all digits flicker 2 3 Other possible problems caused by defective control unit a Buzzer does not sound or continues to sound b Cooking is not possible Note When defective components the Co...

Страница 18: ...N 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 acts as a fuse If the foil pattern is open follow the troubleshooting guide given below for repair Problem POWER ON indicator does not light up CARRY OUT 3D CHECKS STEPS OCCURANCE CAUSE OR CORRECTION 1 T...

Страница 19: ...oltage T1 transformer to volatges required at each part by full wave rectifying circuit constant voltage circuit etc 2 ACL Circuit This is an Auto clear Circuit i e a reset circuit which enables IC1 to be activated from initial state 3 Power SYNC Signal Generating Circuit This is a circuit for generating power SYNC signal by virtue of the secondary side output of transformer T1 This signal is used...

Страница 20: ...PROM clock output 12 P45 IN OUT Memory EEPROM data input output 13 14 P44 P43 OUT Magnetron high voltage circuit driving signal To turn on and off the cook relay In 100 power level operation L level during cooking H level otherwise In other power level operation 90 80 70 60 50 40 30 20 10 or 0 H and L level is repeated according to power level Power level ON OFF Power level ON OFF 100 48sec 0sec 4...

Страница 21: ...ne of G 9 line keys on key matrix is touched a corresponding signal will be input into R0 38 VP IN Anode segment of Fluorescent Display light up voltage 31V Vp voltage of power source circuit input 39 P17 OUT Segment data signal The relation between signals and indicators are as follows Signal Segment Signal Segment P24 i P13 f P23 j k P12 e P17 LB P11 d P16 UB P10 c P15 h P07 b P14 g P06 a Key st...

Страница 22: ...cending order from the maximum level of sound volume through the minimum level Sound Volume P21 P22 1 Max L L 2 H L 3 Min L H At Output terminal P32 rectangular wave signal of 2 5kHz is output 61 P21 OUT Sound level control signal Refer to above signal P22 62 P20 IN Input signal which communicates the door open close information to LSI Door closed H level signal 0V Door opened L level signal 31 0V...

Страница 23: ... those models check and repair all the controls sensor related ones included of the touch control panel while keeping it connected to the oven B On some models the power supply cord between the touch control panel and the oven proper is long enough that they may be separated from each other For those models therefore it is possible to check and repair the controls of the touch control panel while ...

Страница 24: ... total cook time 35 43 2 CHECK CHECK NUMBER 0 1sec BUZZER flashing 1 Denotes total service counts within the reach of user of which checking and clearing practices are described in this instruction manual 2 Denotes the procedure for the servicer to disable check ing clearing This procedure is instructed to service per sonnel only and is excluded from the operation manual 1 How to enter the content...

Страница 25: ...F CHECK 1 90 POWER B 2 0 00 DEF CHECK A DEF CHECK 2 0 POWER B 100 DEF CHECK 3 A POWER 100 Repeat CHECK PAD ORDER DISPLAY PHONE SET SET NUMBER DOUBLE NUMBER DOUBLE 1 NUMBER 1 0 00 DOUBLE 1 8 0 NUMBER 1 1 80 DOUBLE x 3 SET NUMBER DOUBLE SET 1 No key entry signal 2 How to clear all counter user and service and total cooking time and used time of filter PAD ORDER DISPLAY PHONE Door close SET SET NUMBE...

Страница 26: ...al screw CAUTION 1 DO NOT REPLACE ONLY HIGH VOLTAGE REC TIFIER WHEN REPLACE IT REPLACE HIGH VOLTAGE RECTIFIER ASSEMBLY 2 WHENREPLACINGHIGHVOLTAGERECTIFIER ASSEMBLY ENSURE THAT THE CATHODE EARTH CONNECTION IS SECURELY FIXED TO THE CHASSIS WITH A EARTHING SCREW 6 Now the two 2 high voltage capacitors are free To remove the components proceed as follows 1 CARRY OUT 3D CHECKS 2 Remove two 2 screws hol...

Страница 27: ...RY OUT 3D CHECKS 2 Disconnect the wire leads from the blower motor and the blower motor thermal cut out 3 Remove the one 1 screw holding the blower motor to the oven cavity 4 Remove the one 1 screw holding the blower motor to the chassis support 5 Remove the blower motor Now the blower motor is free STIRRER MOTOR UPPER REMOVAL 1 Remove the outer case cabinet referring to OUTER CASE REMOVAL and CAR...

Страница 28: ...able holder inwardly 10 Remove four 4 screws holding the control unit to the panel frame assembly 11 Push down the right side two 2 hooks fixing the control unit to the panel frame assembly and lift up the control unit upward 12 Now the control unit and control panel frame with key are free CAUTION At installing control panel unit assembly to main body set 1 Ensuretheinstallationofwiring relatedpa...

Страница 29: ...latch hook to the oven cavity 4 Open the door and pull the latch hook out of the oven cavity 5 For 1st latch 2nd latch or Monitor switch removal 5 1 Disconnect the wire leads from the switch 5 2 Push the retaining tabs outward slightly and then pull the switch forwards and remove it from the 1ST 2ND 3RD LATCH SWITCH STOP SWITCH AND MONITOR SWITCH ADJUSTMENT In case 1st latch switch 2nd latch stop ...

Страница 30: ...R ASSEMBLY LATCH HEADS OUTER CASE CABINET Figure C 5 Door Assembly Replacement and Adjustment CHOKE COVER REMOVAL 1 Insert an iron plate thickness of about 0 5mm or flat type screw driver to the gap between the choke cover and door panel as shown figure to free the engaging part The protect sheet may be used not to damage the door panel 2 Lift up the choke cover now cove is free DOOR REPLACEMENT A...

Страница 31: ...truments that comply with the requirement for instrumentations as prescribed by the perform ance standard for microwave 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 15ml of water initially at 20 5 C in the centre of the oven tray The water container should be a low fo...

Страница 32: ...NT F3 WEAK POINT A018 OL SM STIRRER MOTOR SM BM RY1 RY3 RY4 MAGNETRON THERMAL CUT OUT 145C UPPER B2 B3 D1 H1 H3 INTAKE THERMISTER MAGNETRON THERMISTER ASYMMETRIC RECTIFIER H V RECTIFIER C2 H V CAPACITOR MG2 MAGNETRON LOWER HIGH VOLTAGE TRANSFORMER REAR TC2 TC1 TC4 TC3 T1 T2 NOISE FILTER 1ST LATCH SWITCH PRIMARY INTERLOCK SWITCH MONITOR SWITCH MONITOR RESISTOR BLOWER MOTOR THERMAL CUT OUT 115C A7 A...

Страница 33: ...CTIFIER HIGH VOLTAGE CAPACITOR B L U EXHAUST THERMISTOR YLW WHT OVEN LAMP SOCKET O R G O R G PNK F4 WEAK POINT A018 TC4 OVEN THERMAL CUT OUT TC2 MAGNETRON THERMAL CUT OUT Lower F2 FUSE F6 3A G Y POWER SUPPLY CORD WHT ORG TC3 BLOWER MOTOR TAERMAL CUT OUT PNK GRY MONITOR SWITCH BLOWER MOTOR CN D ORG ORG BRN 1 GRN 3 GRY 2 RED CN B 1 BLK 3 BLK 2 CN D GRN GRN BLU INTAKE THERMISTOR WHT 2ND LATCH SWITCH ...

Страница 34: ...W Q20 KRA101M R20 15K C22 C20 Q81 DTD143ES C82 C81 1µF 50V 2 2µF 50V R80 470 Q80 DTA114YS C80 0 1µF 50V R32 2 7K R33 10K J2 8 2K J3 36K RY1 D81 OVEN LAMP BLOWER MOTOR MICRO 1 MICRO 2 CT1 RY3 D83 RY4 D84 CT2 Q83 DTB143ES Q84 DTB143ES R61 1 5KF D61 D62 R62 1 5KF R65 300K R66 300K R63 1K R64 1K C62 22µF 25V D70 11ES1 C70 0 01µF 50V D71 R70 100 DOOR R71 30K C71 R73 20K R74 3 3K R72 1 1K THERMISTOR DOO...

Страница 35: ... 5 3 9 7 9 D85 4 Q41 R41 10 4 5 5 0 5 5 4 0 6 0 6 4 12 R63 J11 R65 3 1 2 5 R40 1 5 10 12 2 J1 1 3 R300 J7 J8 R43 R42 D200 D201 E B Q201 B Q200 E R101 R100 R99 R96 R95 R94 R93 R92 R91 R97 R96 R71 D95 D94 D93 D92 D91 D97 D96 3 3 3 2 2 5 2 0 1 5 1 0 5 1 R20 5 4 R4 J3 J2 1 3 D74 R50 1 10 20 26 1 4 5 8 1 3 D I P ...

Страница 36: ...F 2 3 PSHEGA007WRE0 Rubber sheet B 2 AE 2 4 GCOVAA250WRW0 Rear cabinet 1 AX 2 5 FFTASA064WRY0 Oven lamp access cover assembly 1 AN 2 5 1 PCUSU0407WRP0 Cushion 1 AA 2 5 2 PREFHA059WRP0 Lamp reflector 1 AF 2 6 GCABUA523WRP0 Outer case cabinet 1 BA 2 7 PZETEA071WRP0 Cabinet insulation sheet 1 AF CONTROL PANEL PARTS 3 1 DPWBFB382WRU0 Control unit 1 BQ 3 1A QCNCMA308DRE0 4 pin connector A 1 AC 3 1B QCN...

Страница 37: ...or 1 8k ohm 1 4W 1 AA R61 62 VRN B12EK152F Resistor 1 5k ohm F 1 4W 2 AA R63 64 VRD B12EF102J Resistor 1 0k ohm 1 4W 2 AA R65 66 VRD B12EF304J Resistor 300k ohm 1 4W 2 AA R67 68 VRD B12EF473J Resistor 47k ohm 1 4W 2 AA R70 VRD B12EF101J Resistor 100 ohm 1 4W 1 AA R71 VRD B12EF303J Resistor 30k ohm 1 4W 1 AA R72 VRD B12EF112J Resistor 1 1k ohm 1 4W 1 AA R73 VRD B12EF203J Resistor 20k ohm 1 4W 1 AA ...

Страница 38: ...ct 1 AP 4 29 PCUSUA414WRP0 Cushion 1 AD 4 30 LANGQA251WRW0 Noise filter angle 1 AF 4 31 LANGQ0382WRM0 Earth angle 1 AB 4 32 LANGFA172WRP0 Chassis support 1 AH 4 33 LBSHCA012WRE0 Cord bushing 1 AD 4 34 PCUSGA441WRP0 Cushion 1 AL 4 35 FFIL A003WRK0 Air intake filter assembly 1 AV 4 36 HDECEA001WRP0 Decoration sash 1 AR 4 37 HDECQA146WRM0 Corner cap left 1 AE 4 38 HDECQA147WRM0 Corner cap right 1 AE ...

Страница 39: ...00 Screw 3mm x 8mm 4 AB 7 2 XFPSD50P12KS0 Screw 5mm x 12mm 4 AB 7 3 XFTSD40P10RV0 Screw 4mm x 10mm 1 AB 7 4 XOTSD40P06000 Screw 4mm x 6mm 2 AA 7 5 XFTSD40P12000 Screw 4mm x 12mm 1 AA 7 6 XWSSD40 10000 Washer 4mm x 1mm 1 AA 7 7 LX WZA035WRE0 Special washer 1 AB 7 8 XOTWW40P08000 Screw 4mm x 8mm 4 AB 7 9 LX CZA038WRE0 Special screw 2 AA 7 10 PSPA A101WRE0 Washer 4 AB 7 11 XTBWW40P30000 Screw 4mm x 3...

Страница 40: ...To have your order filled promptly and correctly please furnish the following information 1 MODEL NUMBER 2 REF NO 3 PART NO 4 DESCRIPTION 1 28 RFIL A004WRE0 1 28 RFIL A004WRE0 1 29 RFIL A002WRE0 POWER SUPPLY CORD These ferrite clamps are included in High voltage rectifire assembly 6 2 PTUB A042WRE0 ...

Страница 41: ... 1 10 4 7 4 10 1 21 6 5 4 51 4 4 7 14 7 37 7 18 7 8 4 27 4 53 7 19 7 13 7 24 4 27 4 29 7 25 6 18 4 26 7 18 7 1 7 8 7 22 7 20 7 33 4 25 7 15 7 33 4 28 7 25 7 24 7 16 7 16 4 23 7 34 7 3 7 21 6 15 7 35 7 21 7 2 4 52 7 30 7 4 7 17 7 16 7 17 7 27 4 31 4 34 7 2 7 30 7 15 7 26 7 26 7 1 7 38 7 16 4 17 4 1 4 32 7 36 6 12 7 4 6 8 7 18 7 32 7 32 7 36 7 1 7 12 4 26 7 11 1 7 7 18 x 2 7 16 7 17 4 54 7 1 6 17 2 ...

Страница 42: ...1 2 3 A B C D E F G H A B C D E F G H DOOR PARTS 5 15 5 16 5 17 5 18 5 4 5 20 5 12 5 10 5 11 5 11 5 14 5 21 5 1 5 9 5 8 5 7 5 6 5 19 5 13 5 13 5 2 5 3 5 5 5 6 5 CONTROL PANEL PARTS 1 3 3 6 3 4 3 5 3 3 3 2 1 3 2 2 3 2 3 2 3 3 1 3 7 ...

Страница 43: ...97 PACKING ADD KIT CPADBA203WRK0 WRAP COVER DOOR PROTECTION SHEET SPADPA552WRE0 PACKING CASE SPAKCC551WRE0 DOOR PAD SPADF0341WRE0 TRAY HOLDER SPADPA551WRE0 PRINTING MATER INSTRUCTION BOOK Not replaceable items ...

Страница 44: ...42 R 2397 97 SHARP CORP 5U0 10E Printed in Japan ...

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