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Summary of Contents for R-2380

Page 1: ... INFORMATION 1 WARNING 1 PRODUCT SPECIFICATIONS 2 APPEARANCE VIEW 3 OPERATING SEQUENCE 4 FUNCTION OF IMPORTANT COMPONENTS 7 COUNTER CHECK 9 RESETTING THE COUNTER MEMORIES IO SERVICING 15 TEST PROCEDURE 20 TOUCH CONTROL PANEL 28 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 39 MICROWAVE MEASUREMENT 46 TEST DATA AT A GLANCE 47 TEST POINT ON CONTROL UNIT 47 WIRING DIAGRAM 48 PICTORIAL DIAGRAM 49 CON...

Page 2: ...R 2380 ...

Page 3: ...from the magnetron or other microwave generating devices if it is improperly used or connected All input and output microwave connections waveguides flanges and gaskets must be secured Never operate the device without a microwave energy absorbing load attached Never look into an open waveguide or antenna while the device is energized Note Parts List The parts marked rr rr are used in voltage more ...

Page 4: ...mm Depth 310 mm Touch Control System Microwave power level 100 90 80 70 60 50 40 30 20 10 0 MANUAL TIME SET key MICROWAVE POWER SETTING key STOP CLEAR key START key DOUBLE QUANTITY key EXPRESS DEFROST key SET key CHECK key VOLUME key Approx 30 0 kg Your oven can be programmed a series of up to 2 cooking stages r The combination of microwave power and cooking time that can be input is as follows Co...

Page 5: ...or latches 8 Air intake opening and filter 9 Ceramic shelf IO Hinges 11 See through door 12 Power supply cord 13 Mounting plate 14 TIME display Lighted digital display up to 60 minutes 00 seconds 15 Cooking indicator 16 SELECTAPOWER display percentage of microwave power is indicated 17 DOUBLE QUANTITY pad 18 EXPRESS DEFROST pad 19 Ten NUMBER pads for time and memory programming 20 SELECTATIME pad ...

Page 6: ...3 4 When the cooking time is up a signal tone is heard and the relays RY3 RY4 go back to their home position The circuits to the power transformers Tl T2 are cut off The relay RY1 remains and oven lamp and blower motor operate for 1 minute When the door is opened during a cook cycle the switches come to the following condition CONDITION DURING DOOR OPEN SWITCH CONTACT COOKING NO COOKING Upper latc...

Page 7: ...ed alternatively according to the frequency of the power supply Refer to the Figure 1 and 2 T2 POWER TRANSFORMER r 7 Tl POWER TRANSFORMER r J f 0 H V RECTIFIER C2 tZ P ITOR AC2 OO ASYMMETRIC RECTIFIER U 0 H V RECTIFIER Cl CAPACITOR 0 87pf AC2IOOV Figure 1 High Voltage Circuit COMMERCIAL FREQUENCY 150Hz POWER OUTPUT BY MAGNETRON 1 Y A Ezl OPERATION OF I MAGNETRON POWER OUTPUT BY MAGNETRON 2 Figure ...

Page 8: ...ing levels of microwaves power are given Number key Number key 9 Number key 8 Number key 7 Number key 6 Number key 5 Number key 4 Number key 3 Number key 2 Number key 1 Number key 0 30 set ON 26 set ON 24 set ON 22 set ON 18 set ON 16 set ON 12 set ON 1 8 set ON 6 set ON 0 set ON NOTE The ON OFF time ratio does not exactly correspond to the percentage of microwave power because aoprox 2 seconds ar...

Page 9: ...tch ASYMMETRIC RECTIFIER The asymmetric rectifier is solid state device that pre vents current flow is both directions And it prevents the temperature rise of the power transformer by blowing the fuse M8A Fl or F2 when the high voltage rectifier is shorted The rated peak reverse voltage of Dl of the asymmetric rectifier is 6 KV The rated peak reverse voltage of D2 of the asymmetric rectifier is 1 ...

Page 10: ...cause the blower motor is locked or the ven tilation openings are blocked the contacts of the ther mal cut out TC3 will open and the line voltage to the control unit will be cut off and the operation of the oven will be stopped The thermal cut out TC3 will be close its contacts again when its temperature goes down lower than 20 C OVEN TEMP FUSE 150 C TF This temp fuse protects the oven against ove...

Page 11: ... using memory 1 Touch SELECTATIME pad 3 pizGq I Times of manual cooking Touch EXPRESS DEFROST pad l EEq jl Times of EXPRESS DEF ROST cooking Although the owner can clear all memories including total times used the total times the oven has been used since the last service are retained in the memory To recall this information carry out the procedure as outlined in the below Carry out steps 1 and 2 a...

Page 12: ...SELECTAPOWER pad for 2 seconds pGq For 2 sec 4 After 2 seconds Display I WIJYRER CHECK Total times used Times of using memory 1 m 1 To cancel Counter Check modes touch STOP CLEAR pad 2 To clear times of manual cooking touch SELECTATIME pad at Step 3 instead of NUMBER pad To clear times of EXPRESS DEFROST cooking touch EXPRESS DEFROST pad at Step 3 instead of NUMBER pad 3 To clear total using times...

Page 13: ...01 and 5 Touch SELECTAPOWER pad Order Display Ez I After 2 sec an entry signal sounds I 6 Touch NUMBER pad 161 I 6 NOTE This machine would have been preset to suit the owner s requirements If you alter any memory set tings during the service please notify the owner when the oven is returned MEMORY CHECK l Suppose you want to know the information programmed into the memory 1 programmed for 4 minute...

Page 14: ... signal sounds 1 2 3 4 5 6 Touch DOUBLE QUANTITY pad for 2 seconds 1 NUMBER I For 2 sec After 2 sec an entry signal sounds El 1 Touch NUMBER pad II Touch SELECTATIME pad r j I I J NUMBER pads 1 161 and mm171 Touch SET pad El SET L DOUBLE QUANTITY CONSTANT CHECK Suppose you wish to know the double quantity constant entered into programme 1 Order Display tep Procedure I START Touch START pad for 2 s...

Page 15: ... time at 20 power itep Procedure Order Display Touch START pad for 2 seconds 1 izz i After 2 sec an entry signal sounds 2 Touch SET pad m 1 ___1 3 Touch START pad I r l 4 Touch EXPRESS DEFROST pad l EEq v il 5 Touch SELECTATIME pad LIEffEl v 6 Touch NUMBER pads 21 101 mm VI 7 Touch SELECTATIME pad piizz j v D1 8 Touch NUMBER pad 121 El I 9 Touch SELECTAPOWER pad I Continued on page 14 13 ...

Page 16: ...p x j 12 Touch NUMBER pads a 131 mEr r0 i3 Touch SELECTATIME pad 13 pzEq v 14 Touch NUMBER pad 131 m VI Touch SELECTAPOWER pad 15 ISELECTAPOWER 1 16 Touch NUMBER pad 131 m p ygq Touch SELECTATIME pad 17 y l I Touch NUMBER pad a El 18 il Touch SELECTAPOWER pad 19 p q 20 Touch NUMBER pad 21 m p q 21 Touch SET pad 14 ...

Page 17: ... primary of the 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 tray close the door and press the SELECTATIME key and ...

Page 18: ...utlet Keys are touched but the programme can not be entered When the door is opened FUSE F3 BSF 13A blows Home fuse blows when power supply cord is plugged into wall outlet OFF CONDITION FUSE BSF 13A F3 blows when power supply cord is plugged into wall outlet Oven lamp and blower motor do not work for 1 minute whenever the door is opened or after cooking When the door is opened blower motor works ...

Page 19: ...R 2380 17 ...

Page 20: ...ork IN ONDITION Digital display shows cooking time is 0 or STOP CLEAR key is touched but oven does not stop Oven lamp and blower motor does not work Oven goes into cook cycle but food is heated extremely uneven Oven goes into cook cycle but shuts down before end of cooking cycle Microwave power level is set in 1O 0 Oven seems to be operating but no heat is produced in oven load Microwave OOOOOOO O...

Page 21: ...B z 2 3 d I 1 1 I ii z 0 E 2 5 2 l 1 7 1 I i I z E 0 0 5 1 5 F 2 d I i 5 b B 2 d a 0 d 3 I 1 I 2 2 s 5 5 2 kc 5 1 1 E 3 E 5 z 3 IL s 1 L F 0 2 is 2 5 g 4 1 s 5 5 E 3 3 5 E El 5 SZ Y 8 SJ s 5 E 8 t El iz C v 8 z 5 5 5 ai 5 a1 El 0 1 0 II rm 22 uY 5 r r Ll 0 0 z CT p s E k zi 0 7 no00 00 or nnoo 0000 nnn 00 19 ...

Page 22: ...ing works for t second approximately P x t 4 2 calorie is generated On the other hand if the temperature of the water with V ml rises AT C during this microwave heating period the calorie of the water is V x AT The formulae 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 2O C Power supply Voltage 240 volts Water load 2000 ml ...

Page 23: ...ents are present at the secondary winding and filament winding 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 vltage circuits including the magnetron fil ament CARRY OUT 3D CHECKS Disconnect the leads to the primary winding of the power transformer Disconnect the filament and secondary winding connections fro...

Page 24: ... probably faultly and must be replaced with the high voltage rectifier When the asymmetric rectifier is defective check whether magnetron high voltage rectifier high voltage wire or fila ment winding of the power transformer is shorted CARRY OUT 9 CHECKS AA QLTAGE RECTlFlER NOTE FOR MEASUREMENT OF THE RESISTANCE OF THE RECTIFIRE THE BATTERIES OF THE MEASURING INSTRUMENT MUST HAVE A VOLYAGE AT LEAS...

Page 25: ... in the asymmetric rectifier or there is an earth in the wire harness A short in the asymmetric rectifier may be occured due to short or ground in H V rectifier magnetron power transformer or H V wire Check them and replace the defective parts or repair the wire harness CARRY OUT 4R CHECKS CAUTION Only replace fuse with the correct value replacement G FUSE BSF 13A F3 TEST CARRY OUT 3D CHECKS 1 If ...

Page 26: ...ncorrect readings are obtained replace the temp fuse or thermal cut out An open circuit MG thermal cut out indicates that the magnetron has overheated this may be due to resistricted ventilation cooling fan failure or a fault condition within the magnetron or HV circuit An open circuit oven temp fuse 150 C indicates that the oven cavity has over heated this may be due to no load operation An open ...

Page 27: ...sistance 1 68 F 2O C 86 F 3O C Approx 61 5kQ 39 5kf2 1 If the meter does not indicate above resistance replace the thermistor CARRY OUT R CHECKS MOTOR WINDING TEST CARRY OUT 3iJ CHECKS Disconnect the leads from the motor Using an ohmmeter check the resistance between the two terminals as described in the tab e below Table Resistance of Motor IM otors Resistance 1 Blower motor I Apuroximatelv 35 oh...

Page 28: ... a defective LED Unit Replace the LED Unit a When desired memory pad example No l is touched No 1 LED does not light or LEDs do not turn off b None of the LEDs light up c Only certain LEDs will not light up M KEY UNIT TEST If the display fails to clear when the STOP CLEAR pad is depressed first verify the flat ribbon is making good contact verify that the door sensing switch stop switch operates p...

Page 29: ...the leads from the primary of the power transformer Make sure that the leads remain isolated from other oven components and chassis Use insulation tape if necessary Reconnect the supply STEPS I OCCURANCE I CAUSE OR CORRECTION 1 The rated voltage is not applied to POWER terminal Check supply voltage and oven power cord of CPU connector CN A 2 The rated voltage is applied to primary side of Power Po...

Page 30: ...cuit This is a circuit for transmitting key input information to El 9 Sound body Driving Circuit This is a circuit for driving sound body by ICl output 10 Relay Driving Circuit This is a circuit for driving output relay by ICl output 11 Stop SW Circuit This is a circuit for driving ICl to detect door opening closing 12 Exhaust Gas Temperature Detecting Circuit This is a circuit for transmitting ou...

Page 31: ...wing tables VREF IN7 IN6 IN5 IN4 IN3 IN2 IN1 IN0 P47 P46 P45 P44 P43 P42 P41 P40 P37 P36 P35 P34 P33 P32 P31 P30 LSI IZA324DR AVCC P20 P21 P22 P23 P24 P25 P26 P27 PO0 PO1 PO2 PO3 PO4 PO5 PO6 PO7 PlO PI1 PI2 PI3 P14 PI5 PI6 P17 VP RO RI R2 R3 4 Figure T l Relationship between pin Nos and Signals LSI IZA324DR 29 I ...

Page 32: ...cording to the model Signal in accordance with the model in operation is applied to set up its function AID input for troubleshooting Magnetron 2 Connected to GND OV Terminal not used 1 VREF IN 2 IN7 IN 3 IN6 IN 4 IN5 IN IN4 IN 6 IN3 IN IN2 IN 8 IN0 IN P47 Memory fEEPROM data output Memory EEPROM clock ouput Memory EEPROM select output Magnetron high voltage circuit driving signal To turn on and o...

Page 33: ...l Square waveform 50Hz To turn on and off shut off relay RY 1 The Square waveform voltage is delivered to the RYl driving circuit and relays RY3 RY4 COOK RELAY control circuit 17 P40 OUT 20 0 msec 4 During cooking 18 P37 Terminal not used P36 OUT P35 OUT P34 OUT P33 OUT 23 P32 OUT Sianal to sound buzzer This signal is to control the 2 5 KHz continuous signal A Key touch sound 6 Guidance sound C Co...

Page 34: ...utput to control oscillation input of XIN 30 XCIN IN 31 XCOUT OUT 32 vss IN Terminal not used Power source voltage 5V VC voltage of power source circuit input 33 4 OUT 34 R3 IN Terminal not used Signal coming from touch key When either one of G l 2 line keys on key matrix is touched a corresponding signal out of Pll P17 will be input into R3 When no key is touched the signal is held at L level 35 ...

Page 35: ...nal 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 41 P15 OUT 1 Segment data signals Signal similar to PI 7 2 Key strobe signal Signal applied to touch key section A pulse signal is input to RO R3 terminal while one of G 4 line keys on key matrix is touched 42 P14 OUT 1 Segment data signal Signal similar to PI 7 43 PI3 OUT...

Page 36: ...ignal similar to P17 47 PO7 OUT Segment data signal Signal similar to P17 48 PO6 OUT Segment Signal similar to P17 49 PO5 OUT Digit selection signal The relation between digit signal and digit are as follows Digit signal digit Digit signal digit PO5 1St PO2 4th PO4 2nd PO1 5th PO3 3rd PO0 6th Normally one pulse is output in every R period and input to the grid of the Fluorescent Display H R 50HzJ ...

Page 37: ...gnal levels for P23 P22 and P21 Relationship of signal level combination to sound volume level is shown in the following table in the table however are indicated in the descending order from the maxi mum level of sound volume through the minimum level Table 60 61 62 63 64 AC l 0 Max 34 OV 0 23 6V At Output terminal P32 rectangular wave 0 18 8V 0 10 7v signal of 2 5 KHz is output 0 7 3v P22 OUT Sou...

Page 38: ... input output signal for IC3 are as shown in the following diagram TOP VIEW vcc GYD f 4 Data register t t output SK Clock generator Jo Figure T 2 Relation between Pin Nos and Signals Pin No Signal I O Description 1 cs OUT Chip Select accepts data input at HI y I I 1 2 SK IN Clock Signal Input inputs outputs serial data at every one pulse m I I 3 DI IN Serial data input receives instruction and dat...

Page 39: ...e by variation of the current flowing in high voltage transformer at the main body side During heating flows the primary side current of high voltage transformer in current transformers T2 or T3 Then generated in the secondary sides of current transformers in AC voltage which is determined by R61 or R62 Execute halfwave rectification of the se condary side AC current at D63 or D64 and then smooth ...

Page 40: ...contact with the oven proper On some models on the other hand the power supply cord between the touch control panel and the oven pro per is so long that they may be separated from each other For those models therefore it is allowed 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 on PWB...

Page 41: ... To remove the outer case proceed as follows 1 Disconnect oven from power supply 2 Open the oven door and wedge it open 3 Remove the screws from rear and along the side edge of case referring to Figure C l 4 Slide the entire case back about 1 inch 3cm to free it from retaining clips on the cavity face plate 5 Lift the entire case from the oven 6 Remove the screws holding the rear cabinet to the ov...

Page 42: ...olding the power transformer to the bottom plate 18 Remove the power transformer 19 Remove the one touch sleeve from the filament lead of power transformer Now the power trans former is free CAUTION WHEN THE POWER INSTALLED THE ONE TOUCH SLEEVE MUST BE FITTED IN THE FILAMENT LEAD OF IT BECAUSE IT DOES NOT HAVE ANY ONE TOUCH SLEEVE CONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVAL The complete contro...

Page 43: ...n and blue wires of power supply cord into the terminals of the cord connector and tighten the screws refer Figure C 3 Insert the green yellow wire of power supply cord into the earth angle and tight the screw holding the earth angle Re install the cord anchorage upper to the noise filter angle with the one l screw CARRY OUT 4R CHECKS Noise filter angle Terminal harness Cord connector Blue wire Po...

Page 44: ... the retaining tabs outward slightly and then pull the switch forwards and remove it from the latch hook 6 For upper latch and stop switches removal 6 l Disconnect the wire leads from the upper latch and stop switches i 2 Remove the single 1 screw and nut holding the 1st latch and stop switches to the latch hook CAUTION WHEN THE UPPER LATCH SWITCH AND STOP SWITCH ARE INSTALLED THE TWO 2 TABS OF TH...

Page 45: ...oose two 2 screws holding latch hook and adjust the latch hook position After adjustment make sure of the following I The stop switch and upper and lower latch switches interrupt the circuit before the door open when the door release lever is pulled and then and monitor switch close the circuit when the door is opened 2 Re install outer case and check for microwave eakage around the door with an a...

Page 46: ...sted to meet the following three conditions by keeping screws of hinge loose 1 2 3 4 Adjust door latch heads at a position where they smoothly catch the latch hook through the latch holes Refer to latch switch adjustments Deviation of the door alignment from horizontal line of cavity face plate is to be less than 1 Omm The door is positioned with its face depressed to ward the cavity face plate Re...

Page 47: ...el 15 Now the door glass as free 1 Pushing the lever of positive lock connecotr 2 Pull down the connector from the terminal 3 Now the connector is free Note If the positive lock has a insulation sleeve first remove it If you do not so you can not push the lever of positive lock CAUTION The positive lock terminal can not be disconnected by only pulling Because once you Service personnal have con ne...

Page 48: ...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 form of 600 ml beaker with inside diameter of approx 8 5cm and made of an electrically non conductive material s...

Page 49: ...nect the power plug and door is closed Input terminal Power supply 1 A5 A7 1 240V 1 Approx 775f2 Output terminal Stop switch 1 Bl B2 I 0 Output terminal Oven lamp Blower motor Output terminal Earth Output terminal Thermister Al A7 240V Approx 3OQ Bl Chassis 0 Bl 83 DC 5V Approx 61 5kn at20 C 39 5kn at 30 C I WARNING DISCONNECT THE PLUG WHEN MEASURING RESISTANCE 47 I ...

Page 50: ...0 u z 9 9 F6 w FY F9 2 gzl i2s 5 0 s 8 Be 32 LY B do z 2 ji 1 g g wz gg FE A ri m P I b m f77 c B g 4m tr OOQ B 3 ig 5 1 z 48 4Ht i ii 4 i g L f I 1 E z 00 E I 0 G E 2 G s 0 2 5 IA E a 5 E 0 k 0 I 0 ti E 2 5 6 z L 5 L ...

Page 51: ...1 2 3 4 5 6 I 1 2 3 4 5 6 I 49 ...

Page 52: ...1 2 3 4 5 6 Z s L 0 5 6 P 5 E 6 Ij g ta 3 7 2 3 4 5 6 1 A 6 C D E F G i H 50 ...

Page 53: ...R 2380 1 2 3 4 I 5 6 8 C r D I CONTROL PWB Figure S 3 Printed Wiring Board H 1 7 I e c 1 I z I J I 4 I 0 I Y 51 ...

Page 54: ...C QZA12OWREO C2 High voltage capacitor RV MZA12OWREO MGl Magnetron RV MZA120WREO MG2 Magnetron CABINET PARTS I 1 AN AU 2 AE 1 AH 1 AL 1 AF 1 AL 1 BL 1 AE 1 AE 1 AK 1AM 1 AG 1 AG 1 AG 1 AF 1 AF AF t AD 1 AW 1 AU AU i BG 1 BG 2 1 PSHEGAOOlWREO Rubber sheet A 2 2 PSHEGA002WREO Rubber sheet B I z 1 FFTASA045WRYO Oven lamp access cover assembly complete 2 3 2 GFTASA041WRPO Oven lamp access cover PCUSU0...

Page 55: ... 4W 1AA R44 VRD B12EF682J Resistor 6 8kn 1 4W 1AA R45 VRD B12EF471J Resistor 47on 1 4w AA R47 VRD B12EF562J Resistor 5 6kR 1 4W i AA R61 62 VRN B12EK162F Resistor 1 6kF 21 4W AA R65 66 VRD B12EF304J Resistor 300kO 1 4W AA R67 68 VRD B12EF473J Resistor 47kn 1 4W 2 AA R70 VRD B12EFlOlJ Resistor loon 1 4w AA R72 VRN B12EK223F Resistor 22KFfl 1 4W i AA R74 VRN B12EK302F Resistor 3 0kFO 1 4W AA R81 VRD...

Page 56: ...de C 4 40 PCUSUA246WRPO Blower cushion 4 41 FDAI A123WRTO Base plate 4 42 PCUSGA271WRPO Mg cushion 4 43 PCUSGA272WRPO Mg partation cushion 4 44 PCOVPA221WRPO Stirrer shaft cover 4 45 PCUSGA045WRPO Cushion 4 46 PZETEA043WRPO H V insulation sheet 4 47 PSKR A220WRPO Partition plate 4 48 PZETEA042WRPO H V cover 4 49 PZETEA046WRPO Insulation sheet 4 50 PZETEA047WRPO Switch insulator O TY CODI 1 AF 1 AB...

Page 57: ...HERS XFPSD40P08KOO Screw 4mm x 8mm XHTSD40P08RVO Screw 4mm x 8mm XHBSD30P18000 Screw 3mm x 18mm XWWSD50 06000 Washer 5mm x 0 6mm XFPSD40P20000 Screw 4mm x 20mm LX CZA038WREO Special screw LX EZAOO4WREO Special screw XBPSD5OP12KSO Machine screw XCPSD30P06000 Screw 3mm x 6mm XBPSD30P28KSO Screw 3mm x 28mm XFPSD40P08000 Screw 4mm x 8mm XOTSF40P12000 Screw 4mm x 12mm LX CZAO29WREO LHSTIX Screw LHSTIXL...

Page 58: ...R 2380 1 A B C D E F G i H 1 2 3 4 5 6 CABINET AND UNIT CHASSIS PARTS 1 2 3 4 5 6 56 ...

Page 59: ... A B C D E F G H i 1 I 2 3 4 5 6 CONTROL PANEL PARTS D 3 2 DOOR PARTS 1 2 3 4 5 6 57 ...

Page 60: ...OUNTING PLATE LANGKA453WRPO TRAY HOLDER SPADFA3lAWRFO DOOR PROTECTION SHEET SPADP0336WREO I DOOR PAD SPADF0341 WREO PACKING CASE sSPAKCB520WREO PRINTING MATTER INSTRUCTION BOOK Not Replacement Items 1 I 2 I 3 I 4 I 5 I 6 I A a C D E F G J H i 90 0 SHARP CORP 5K0 62E Printed in Australia 58 ...

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