Sanyo EM-F3400SW Microwave Oven User Manual
Contents
1. SERVICE MANUAL Microwave Oven EM F3400SW 5 Product Code No 437 450 57 9 CAUTION WARNING TO SERVICE TECHNICIANS PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY Do not operate or allow the oven to be operated with the door open Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source and make repairs as necessary 1 Interlock operation 2 proper door closing 3 seal and sealing surfaces arcing wear and other damage 4 damage to or loosening of hinges and latches 5 evidence of dropping or abuse Before turning on microwave power for any service test or inspection within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment integrity and connections Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner Amicrowave leakage check to verify compliance with the Federal performance standard should be performed oneach oven prior to release to the owner REFERENCE NO SM 860304 CAUTION For microwave energy emission2. 10 10408401d JOIOA Jo Joeuooul 104 10 409 401d Owy Owo eounoisise JO SIDUIUJJOL SSOJOD sun 81 596 6 1 151590 47 e peuono si 10 101291OJd 101 1012910Jd O UUM IOON Pwy JO JO JOY JO 945 suna 10 JOLOSLOIC Pwy eob dee JOUUON D o JOUUON 9 6 11140484 JOMOd MOT JeuJoJSUupJ eUJ10JSUDJ joeuooul sun IDUJON NH oouDisiso AH A H Jo AH JO JOJ 2OClO S JoJuoodo2 A H UODe JO 22420 suny Josoyoodea NHeooreil N H JOWJON ME Fn soode A HIDUUON saM UD NH4O A H 10538 3oN3anois 4115 poog iino ino pJoog JO sun JOUOD SoKjdey puou YOOUD
3. JO pue 40 PUD shox Buiuono Aq Bulzzng 9 9UJJOJSUDJ A H JO poog poog SPOS SIM eui BUNOS suna JOYUOD 1 esu ulejqoud JO PUD UO Jo 104 poe SM YOD G PUD PDS AM SLUM 13 16 068 40 19S 13 o si JBMOCd YOOO D USUM SARS yy uo 9 9 110534 JONINGAS 4315 10 7 DISASSEMBLY INSTRUCTIONS e OVEN MUST BE DISCONNECTED FROM ELECTRICAL OUTLET WHEN MAKING REPLACEMENTS REPAIRS ADJUSTMENTS AND CONTINUITY CHECKS BEFORE PROCEEDING WITH ANY REPAIR WORK AFTER DISCONNECTING WAIT AT LEAST 1 MINUTE UNTIL THE CAPACITOR IN THE HIGH VOLTAGE AREA HAS FULLY DISCHARGED WHEN REPLACING ANY DOOR MICROSWITCH REPLACE WITH THE SAME TYPE SWITCH SPECIFIED ON THE PARTS LIST A REMOVING DOOR SENSING SWITCH Figures 1 on page 1 10 a 1 Disconnect all wire leads from the door sensing switch Figure 1 on page 1 2 Remove 2 screws securing the lever stopper 3 Push the door sensing switch upward while pressing adjacent
4. 5 Further tighten the screws nuts with a box wrench giving one or two turns to each of the Blower Motor screws or nuts alternatively so that the magnetron is mounted on to the bracket uniformly Figure 12 6 After replacing the magnetron be sure to check the microwave energy leakage with a leakage detector and confirm the leakage is below 4mW cm 12 REMOVING FUSE Remove the 20A fuse with a screwdriver NOTE When replacing 20A fuse be sure to use an exact repair part the 20A fuse blows immediately check the primary interlock switch the relay 2 on the control circuit board and the interlock monitor switch according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 And make sure to check the microwave energy leakage according to 1 ADJUSTMENT PROCEDURES on page 1 when the primary interlock switch the relay 2 or the interlock monitor switch is adjusted or replaced the primary interlock switch the relay 2 and the interlock monitor switch operate properly determine which of the following is defective control circuit board blower motor high voltage transformer high voltage capacitor high voltage diode or magnetron REMOVING CONTROL CIRCUIT BOARD See exploded view on page 18 and Figure 13 1 Remove the connector 1 5102 and the connector for the relay 2 from the control circuit board 2 Remove 1 screw securing the control panel complete to the oven
5. Test Point TP 1 TP 2 Voltage 5V 15V DC DC CHECKOUT PROCEDURE RESULT Measure the resistance between terminals of not FPC connector after removing it from 101 Resistance Touched touched Figure 9 value Less than More than Ohms 1 MEG Ohms TOUCH KEY NOTE BOARD When reconnecting the FPC connector make When checking START key connect sure the holes on the connector are properly Ohm Meter as illustration below inserted in hooks of the plastic fastener in 101 MATRIX CIRCUIT FOR TOUCH KEY BOARD FPC CONNECTOR Hide 2275 20 12220220 POWER MORE 0 6 5 LEVE BEVERA LESS OF 2 QUICK FROZEN KITCHEN DEFROST ENTRE TIME 1C3 PIZZA FROZEN ADD 113 SLICE START VEGETABLE 30 SEC 1 4 SIOP CUSTOM 18 4 CLOCK 27 2 15 Figure 9 CHECKOUT PROCEDURE FOR SWITCHES Disconnect the lead wires from the switches and check for the continuity of the switches connecting an Ohm Meter to its terminals SWITCHES CHECKOUT PROCEDURES DOOR OPEN DOOR CLOSED See Figure 1 on page 1 Primary Interlock 0 0 Terminals COM and NO 4 Door Sensing oN oc 0 0 Interlock Monitor Terminals COM and
6. 2 2 Disassembly Instructions 11 14 Power Output eene 2 Exploded View and Parts List 15 _ 20 Precautions and Repair Service 2 Overall Circuit Diagram eee 21 Circuit 3 1 ADJUSTMENT PROCEDURES NOTE Ifthe interlock monitor circuit operates and at the TO AVOID POSSIBLE EXPOSURE TO MICROWAVE ENERGY LEAKAGE THE FOLLOWING ADJUSTMENT OF THE INTERLOCK SWITCHES SHOULD BE MADE ONLY BY AUTHORIZED SERVICE PERSONNEL The SANYO service center should have the designated detector to measure the microwave energy leakage after the repair or adjustment NOTE Detector to be used at the service center is NARDA 8100 8200 or the equivalent PRIMARY INTERLOCK SWITCH INTERLOCK MONITOR SWITCH AND DOOR SENSING SWITCH ADJUSTMENT Figure 1 1 Loosen 2 screws securing the lever stopper 2 Adjust the lever stopper position so that it is pushed forward and pull backward until there is about zero gap between the latch lever and switch body on the primary interlock switch and at the same time there is about zero gap between the door latch and the switch body on the door sensing switch when the door latch is securely locked 3 Tighten the lever stopper screws securely 4 Make sure the interlock monitor switch closes after the primary interlock switch opens when the door is opened very slowly
7. a UN CAUTION Afterchecking the switches make sure that the interlock monitor switch is properly connected according to the CIRCUIT DIAGRAM on page 3 6 pJoog JOMUOD JOUUON poog Uono DUJJON 000 000 000 JOMUOD JOUUON Plog OMJUOD rd 10 NO OOUOOU yono eopidee eounjsiseg E p pIoog eopidei JO LOLS 0 JO 20u00 4903 JO MOOU BAN C 9 eGod poog JO 2945 000 TE 7 ooo poog uono 2 260d jo4juo2 amod 22450 9 1 IN318O ld 556 JI eobideel uo 3504 SNIAOIA3 I 3 ees UMOJA si 94 JI POD OV pub ALIADD JO PUSY 10 JOLOSLOld JOUUSUL esn4 Jo 2945 poog JOUJUOD S JOLOBUUOD IHO PUD 5 JOJOSUUOD JO DYA0Z L 22420 Ssko Aq ul Ap dsip situ Jo ON 01 110534 JONINGIAS 4115 5314
8. 15 617 005 5147 Lamp 120 20W 1 29 617 124 3796 Lead Wire Ass y 1 16 617 230 2713 Lamp Socket 1 16 DOOR PARTS ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK d Part No Description Q ty quid Part No Description Q ty 617 229 2403 Door Cover 5 617 222 0123 DoorSheet 2 617 181 4170 Door Panel 1 6 411 054 1903 Nut Hex W SRT 5 2 3 617 229 2007 1 7 617 180 6151 Hinge Upper 1 order Door Sheet when replacing 8 411 011 0802 Bolt Hex SW W 5 14 2 Door Main Frame 9 617 101 1494 Spring 4 617 124 0948 Choke Dielectric 10 617 179 2478 Door Latch 17 CONTROL PANEL PARTS 1 xxx ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK 12 Description Q ty acy Part No Description Q ty 617 230 7787 Control Sheet Also order 1 4 617 151 4377 Control Base 1 Touch Key Board when replacing 5 411 160 6205 SCR TPG TRS SRT 4 x 1071 Control Sheet 6 617 230 2324 Power amp Control Ci
9. H327n8 ij ed 1 RE a 2 E 10H1NOO p NIYIN po 77 LINOYID 5 m 95 4 5 m AW1dS10 7 53 UNIV 484 041 284 oNIv 054 noglo E oi 88 59 itd Zi 9 A 59 Sid 29 Std 2 Std aez vial 7 65 T ONSE Od _ 2 alo vL 3 bi iao1 i 1 2045 2858 sad 21 17 eld KO 019 4 394 Lld ee AOS 070 10195 OOFNL KC 00 NOSISNOVIA HOLIMS YOLINOW MOO TH3LENI 012 10 4 THAIAHL 21
10. On every service calls check for microwave energy emission must be made according to the following manner Measurement of energy emission Measurement must be made with the microwave oven operating at its maximum output and containing a load of 275 15 milliliters of water initially at 20 5 celsius 68 9 F placed within the cavity at the center NOTE The water container must be a 600 milliliter beaker and made of an electrically none conductive material such as glass or plastic The cook tray must be in place when measuring emission A properly operating door and seal assembly will normally register emission on greater than 4mW cm to allow measurement uncertainty with the cooking shelf or tray in place All repairs must be performed such a manner that microwave energy emission are minimal Follow the instructions supplied with a detector being used and performed an R F emission test around the door front and edges and all edges and vent of the outer case The cabinet wrapper must be in place and the oven fully assembled When performing emission survey with the meter on FAST RESPONSE the movement of a detector probe shall not exceed one 1 inch per second In the area emitting the highest reading switch the meter to SLOW RESPONSE and take a reading for minimum of three 3 seconds We recommended the pattern outline shown below when the door surface is surveyed NOTE Periodi
11. 041 14 9 6 IN318O ld pjoog OMUOD DU JON AH JO eui JeullOJSuDJL ArH 0 SHOA 021 OV Jo 104 P08 PUD PDS SIM SLUM einsoeuJ Ae dn joey jou seop USACE 1 bod uoJ gs Bursues 100q JOOQ DUJON eopj doeiJo Joojuoo Joojuoo JOUWON joeuo2 JOOd joojuoo 4015 JOLO UUOD JO joojuooxoeuo 2 AUD 10 JOLOSLOld JOUWEUL PINOY OMUOD 2015 1012euuoo pesojo Joop eui ui 14 PUD 2015 Jojoeuuoo JO YOOUD PUD 10 JOLO JOld JOUUEUL 6 OPMS 77 US Q A dding amod 11018 Jou m 0 110534 36 4315 HNO 65 OWON JOUUON SUJUo 9 10JO A JO poe 1eduunf 8uisn Aq 66
12. 102 617 111 1392 Connector 1 1 617 230 4984 Step Down Transformer 1 410 2 617 178 4268 1 JB1 2 617 132 5744 Noise Fitter 2 19 13 617 079 4299 Jumper 7 16 17 101_103 617 079 4237 Jumper 3 20 9 OVERALL CIRCUIT DIAGRAM 2 AS LINDYIO ASO 154 5 ASL O 1 H3MOd db g 1 E 1581 Nad0 0 5 NIX 11 0 7 2 0 0 7 Nado sad 81938 6193S 4 0 E 888 9NIv 9Sd 2 ASI 22 og s Qus ae LINDHID 90001 SOLD 9012 3578 awit SNIv SGd 8 9000 em 068 POLO TNIV TS 8064 4064 1 deg 1 Ix SES Aggy n 70 19 ous up 28536 EOLA uem GJ sew 8 8 Deo 82 936 06 newsean 3216 2 0 nado E 1013 E NES 6 290 aani g O Nado 55 95 e 2 N340 8831 3321 5 2 nado 4008 86 Nado J XA 20684 128 5 LINDYID OO i Inout
13. 6 5 ALL SERVICE ON MICROWAVE OVENS SHOULD PERFORMED A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK Description Q ty ne Part No Description Q ty 617 228 8321 Cabinet 14 617 120 8481 Insulation Sheet 2 411 082 5201 SCR TPG TRS 4 x 1071 8 15 617 220 9401 Turn Table Shaft 3 411 160 6007 SCR TPG TRS SRT 4x 1071 2 16 617 204 9489 Roller Base Assy 4 617 171 6863 PowerCord 17 617 073 5889 Rotating Tray 5 411 160 6106 SCR S T TRS SRT 4 x 1071 18 617 204 9403 AntennaComplete 6 617 228 8345 Oven Cavity Not Service 1 19 617 162 1938 Cavity Cover 7 617 221 3590 GearMotor 20 411 069 1707 SCR TPG TRS 4 x 6 DA 8 411 010 5808 SCR EVR PAN 4 x 1071 2 21 411 006 6604 SCR TPG PAN 3 x 6 Z1 1 9 617 138 5601 Bottom Plate Not Service Part 1 22 617 200 0381 Thermal Fuse 167 C 10 617 221 6089 Plastic Foot with Canoe Clip 4 23 617 080 5315 Special Washer 11 411 011 0802 Bolt Hex SW W5 x 14 ZI 2 24 12 617 180 6137 Hinge Lower 25 13 411 089 2500 Washer 5 x 10 x 0 8 26 617 229 9013 Special Screw 2 15 SWITCHES AND MICROWAVE PARTS NOTE The parts marked with Nhave special characteristics of safety if replace the mark parts only S
14. ANYO specified parts ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING 4 APPROVED TESTING EQUIPMENT CUSTOMERS SHOULD ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK Part Description 1 Part Description Q ty 1 411 082 5201 SCR TPG TRS 4 x 10 Z1 9 17 617 197 7417 Blower Motor 1 2 617 229 9020 H V Transformer N6T P410 1 18 411 082 5201 SCR TPG TRS 4 x 10 Z1 2 3 617 199 8283 Stay Cavity amp Magnetron 1 19 617 196 8507 Blower Fan 1 4 411 006 6604 SCR TPG PAN 3 671 1 20 617 245 6256 Latch Lever 1 5 617 129 1001 Thermostat Magnetron 135 C 1 21 617 221 4078 Micro Switch Primary Interlock 1 6 415 002 9508 Magnetron 2M253H M N 1 AM51630C53F2 7 423 020 3408 Fuse 125V 20A 1 22 617 221 4061 Micro Switch Interlock Monitor 1 8 617 233 0006 Fuse Holder 1 AM50620C53 9 617 221 3606 Lead Wire Ass y including Diode 1 23 617 221 4078 Micro Switch Door Sensing 1 10 617 162 1990 Blower Base 1 AM51630C53F2 11 617 197 6670 H V Capacitor including Resistor 1 24 0 97uf 2 2KV 25 617 245 6096 Lever 1 12 617 182 2373 Capacitor Band 1 26 411 102 5907 5 TRS 4 10 2 2 13 411 011 5609 Bolt Hex 4x 10 21 4 27 411 129 5805 SCR TPG BIN 3 x 10 Z1 1 14 617 229 7903 Duct Mag Exhaust 1 28 617 117 3505 Harness Door Sensing 1
15. FMAGA 1 R902 905 401 038 6406 MI Glaze 4 7K ohms 4 Q103 405 035 4809 25C1685 Q TP 1 e 2 Q101 102 405 082 4609 DTA123YS TP 2 R106 401 012 4404 Carbon 1000hms 1 5 1 4W R101 112 401 012 5609 Carbon 1IKohms 2 5 1 4W R11 14 401 013 4106 Carbon 1200hms 4 DIODES 4 595 1 AW D11 407 012 0200 1 4002 AES COR jaw 7 2105 401 016 4707 Carbon 22K ohms 1 5 1 4W 20101 407 13252306 HIZO 1 R107 108 401 016 9603 Carbon 27 ohms 2 7011 407 056 8507 RD5 1ESB2 4 595 1 AW 2109 401 018 2701 Carbon 3300hms 1 5 1 4W 103 104 401 020 2805 Carbon 47K ohms 5 51 53 4 595 1 AW CAPACITORS RESISTOR BLOCK C104 105 403 069 1207 Ceramic 1000 3 RB101 617 010 3558 Resistor Network 1 bs RB902 402 080 7700 MI Glaze 10K x 4 War ree 3 RB901 401 083 2108 47Kx 7 1 59 r A C101 403 049 2606 Electrolytic 1mfd 1 MISCELLANEOUS 220 BZ1 420 000 6800 B 22 C12 403 105 3806 Electrolytic 47mfa 1 She eae 20 407 118 5505 Varistor 4710 10 1 C11 403 152 7208 Electrolytic 1000mfd 1 LCDI 617 209 2218 Display Tube 1 20 29V RLI 617 201 3978 Relay G5N 1A DC12 1 RL2 617 141 0549 Relay DU12D1 1PR 1 RSI 617 128 3372 Ceramic Oscillator 1 51 617 169 4109 Connector 1 5101 617 126 8959 Connector 1
16. Output Minimum 19 6 10 9 C 763W Maximum 20 0 F 14 0 C 980W 7 Power Output is affected by line voltage under load For correct Power Output measurement the line voltage under load must 120 1 volts 4 PRECAUTIONS AND REPAIR SERVICE TIPS PRELIMINARY A SINCE NEARLY 2 000 VOLTS EXISTS IN SOME CIR CUITS OF THIS MICROWAVE OVEN REPAIRS SHOULD BE CARRIED OUT WITH GREAT CARE TO AVOID POSSIBLE EXPOSURE TO MICROWAVE ENERGY LEAKAGE THE FOLLOWING PRECAUTIONS MUST BE TAKEN BEFORE SERVICING 1 Before the poweris applied Open and close door several times to make sure the primary interlock switch the interlock monitor switch and the door sensing switch operate properly Listen for the clicking sound from the switches Make sure the interlock monitor switch closes after the primary interlock switch is opens when the door is opened See pages 1 and 6 b Make sure the perforated screen and the choke die lectric of the door are correctly mounted 2 After the power is applied Open and close the door to see if the interlock mech anism operates properly b Check microwave energy leakage with a leakage detector and confirm the energy leakage should be no greater than 4AmW crr to allow for measurement uncertainty 3 Do not operate the unit until it is completely repaired if any of the following conditions exists Door does not close firmly against the cavity front The
17. according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 5 Make sure the interlock monitor switch opens before the primary interlock switch closes when the door is closed very slowly according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 6 Make sure the microwave energy leakage should be no greater than 4mW crr to allow for measurement uncertainty when measured with a detector All service adjustments must be made for minimum microwave energy leakage readings same time the fuse blows with the door opened besure to replace the control circuit board because relay 2 on the control circuit board the door sensing switch and the electric circuit related on the door sensing switch which act as Secondary Interlock Switch Door Latch Lever Stopper Door Sensing a Switch Interlock Monitor Switch Screws Latch Primary Lever Interlock Figure 1 Switch 2 SPECIFICATIONS Rated Power Consumption 1 480W Microwave Output 1050W Frequency esie 2 450MHzx50MHz 120V 12V 60Hz Rated Current 12 9 Amp Safety Devices Thermal Fuse open at 332 F 167 C for Cavity Thermal Protector open at 252 F 122 C for Magnetron Fuse Cartridge Type 20A Primary Interlock Switch Door Sensing Switch and Relay 2 Interlock Monitor Switch ettet cree Ele
18. arked with A have special characteristics of safety if replace the A mark parts use only SANYO specified parts SECONDARY INTERLOCK PRIMARY INTERLOCK DOOR INTERLOCK MONITOR SENSING RELAY 2 SWITCH MADE SWITCH SWITCH SWITCH CONDITION 6 TEST PROCEDURES AND TROUBLESHOOTING CAUTION DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHENEVER REMOVING THE CABINET FROM THE UNIT PROCEED WITH THE TESTS ONLY AFTER DISCHARGING THE HIGH VOLIAGE CAPACITOR AND REMOVING THE LEAD WIRES FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER SEE FIGURE 3 Secondary Windings Filament Windings Primary Windings A TEST PROCEDURES Figure 3 COMPONENT CHECKOUT PROCEDURE RESULT 1 Check for resistance Across the filament Normal reading terminals of the Magnetron with an Ohm Meter Less than 1 Ohm on Rx 1 scale Ohm Meter MAGNETRON 2 Check for resistance Between each filament Normal reading terminal of the Magnetron and the chassis ground with an Ohm Meter on highest scale a Figure 5 Infinite Ohms 2 HIGH VOLTAGE TRANSFORMER Measure the resistance With an Ohm Meter on R x 1 scale Primary winding b Filament winding c Secondary winding Measure the resistance With an Ohm Meter on highest scale Primary winding to ground b Filament winding to ground Figure 6 Note Remove v
19. arnish of measured point Normal readings Approximately 0 38 Ohms Less than 1 Ohm Approximately 82 0 Ohms Normal readings Infinite Ohms Infinite Ohms CHECKOUT PROCEDURE RESULT CAPACITOR including BLEEDER RESISTOR Measure the resistance Across two terminals with an Ohm Meter on highest scale Ohm Meler Figure 7 Normal reading Momentarily indicates several Ohms and gradually returns to 10 Meg Ohms Abnormal reading Indicates continuity or 1O Meg Ohms from the beginning HIGH VOLTAGE DIODE Measure the resistance Across two terminals with an Ohm Meter on R x 10 000 scale Figure 8 Normal reading Indicates about the middle position in one direction forward direction and infinite ohms in the reverse direction using meter which is provided with 9 volt battery NOTE Some digital meter may show over evenin aforward direction because low measuring voltage of meter does not allow the meter current to pass through the High Voltage Diode Abnormal reading Indicates continuity or infinite Ohms in both directions CONTROL CIRCUIT BOARD Measure the voltage Between test point TP 1 TP 2 and Ground See Control Circuit Board on page 19 NOTE Proceed with the check of the Step Down Transformer to see if any one of the measured values is different from the specified values
20. cally check to be sure that the probe tip is not worn or dirty The following U S standard applies to microwave ovens 21 CFR 1030 10 Performance Standard for Microwave Ovens It requires that the power density of the microwave radiation emitted by a microwave oven shall not exceed five 5 milliwatts per square centimeter at any point 5 centimeter about 2 inches or more from the external surface of the oven All microwave ovens exceeding the emission level of 4mW cm must be reported to Dept of Service for microwave ovens and the manufacturer immediately and the owner should be told not to use the microwave oven until it has been repaired completely If a microwave oven is found to operate with the door open report to Dept of Service the manufacturer and CDRH immediately Also tell the owner not to use the oven CDRH Center for Device and Radiological Health The interlock monitor switch acts as the final safety switch protecting the customer from microwave radiation If the interlock monitor switch operates to blow the fuse with interlocks failed you must replace all interlock switches primary and secondary interlock switches and the monitor switch with new ones because the contacts of those interlock switches may be melted and welded together TABLE OF CONTENTS Adjustment Procedures 1 Test Procedures and Troubleshooting 4 _ 10 Specifications
21. cavity 3 Remove the FPC connector from the connector 5101 while grasping up both lever ends of the plastic fastener 4 Remove 2 screws securing the control circuit board to The control base 5 Lift up the control circuit board from its lower side and take it out from the control base REMOVING TOUCH KEY BOARD Figure 14 After removing the control circuit board 1 Remove control base while lifting it up at the right side and take it out from the control frame 2 Remove control sheet which is glued to touch key board 3 Remove the touch key board which is held on the control base bracket with the adhesive tape 13 Control Sheet Control Frame Control Base Figure 13 Control Frame Touch Key Board Figure 14 REMOVING DOOR 1 Remove 2 hex nuts securing the upper hinge 2 Tilt the top of the door toward you 3 up the door to remove it NOTE After replacing the door be sure to check that the primary interlock switch the door sensing switch and the interlock monitor switch operate normally See page 1 leakage with a leakage detector Microwave energy leakage must be below the limit of AmW crre to allow for measurement uncertainty DISASSEMBLING DOOR Figure 15 1 Insert a thin flat olade screwdriver between the choke dielectric and the door main frame and lift up the choke dielectric to release hooks one by one Figure 15 After replaci
22. ctronic Digital up to 99 min 99 sec Overall Dimensions 205 s W x 16 2 D x 113 s H Oven Cavity Size 135 4 x 145 s D x 8 2 H Turn Table Diameter 107 8 Effective Capacity of Oven 1 1 Cubic Feet Net Weight Approx 34 5 Lbs 3 POWER OUTPUT MEASUREMENT NOTE The power output specification 1050W on this model is measured with IEC measurement The power output is measured with two 2 liters water is equivalent to 1050W in measurement with IEC when measured with the following power output 1 Fill wo beakers glass or plastic with each one liter of tap water about 20 C and measure the water temperature Use a thermometer with a 1 10 degree gauge 2 Place the beakers side by side in the center of the glass tray 3 Close the door set the TIME for two minutes 72007 in the display window Touch the START key and heat the water exactly for two minutes 4 Take the beakers out immediately stir the water and measure the water temperature respectively 5 Calculate the temperature rise of water in each beaker Then calculate the average value of two temperature rises Output power can be calculated by the equation Power Output W 70 x At Where Atis an average temperature rise in degrees Centigrade 6 Power Output shall be in the following range Average Temperature Rise Power
23. hinge is broken The choke dielectric or the door seal is damaged door is bent or warped or there is any other visible damage to the oven that may cause microwave energy leakage NOTE Always keep seal clean Make sure that there are no defective parts in the interlock mechanism f Make sure there are no defective parts in the microwave generating and transmission assembly especially waveguide 4 The following items should be checked after the unit is repaired The interlock monitor switch is connected correctly and firmly The magnetron gasket on the magnetron is properly positioned Waveguide and oven cavity are intact no leakage of microwave energy The door can be properly closed and the safety switches work properly The oven must be stopped when the door is opened or the time is up The oven must not be operated any of the above components removed or bypassed 5 CIRCUIT DIAGRAM 120V 60Hz N L GN CAVITY TEMP FUSE FUSE 20 167 EC GROUND MAGNETRON THERMAL PROTECTOR INTERLOCK MONITOR OPEN 135 59 SWITCH CLOSE 105 109C 1 1 1 CONNECTOR SWITCH CONNECTOR ep Te KEY 7 prone 101 CAPACITOR 0 97MFD STEP DOWN TRANSFORMER CIRCUIT BOARD MAGNET en 2 2 RESISTOR 10MEG OHM Figure 2 NOTE The parts m
24. ng the door check for microwave energy J REMOVING CAVITY COVER Figure 16 1 Remove ascrew from the cavity compartment K REMOVING TURNTABLE MOTOR COVER 2 Remove the choke dielectric 3 To detach the door cover insert a thin flat blade Figure 17 screwdriver between door cover and door panel 1 Turn over the oven on its back and release the projections inside door cover 21 4 detach the door panel insert a thin flat blade 2 e Rp S screwdriver between the door cover and door main frame 3 Separate the motor cover from bottom plate Hooks 4 Remove 2 screws securing turntable motor to the cavity and take it out Bent the cut joints inside slightly for safety and be careful of sharp edge Hook Join Motor Cover Hooks 9988 6 Joints Bottom Plate Door Main a S Frame EIER 9 44 Choke off Dielectric NOTE The choke dielectric may be damaged when itis removed When reinstalling it replace it with new ones if it is damaged After installing the door in place check for microwave energy leakage with a detector Microwave energy leakage must be below the limit of to allow for measurement uncertainty 990809606406 6660 606 8906600 Figure 17 8 EXPLODED VIEW AND PARTS LIST CAVITY PARTS a Te ue 1938
25. r otherwise deficient in their ability to secure the switches in place 11 C REMOVING BLOWER Figures 11 View and 12 1 Remove screw securing the stay Duct mag exhaust Blower Base 2 Disconnect all lead wires from the blower motor and H V capacitor Thermal Protector 3 Remove 3 screws securing the blower base and disengage 3 hooks from the rear plate of cavity Figure 12 4 Remove 1 screw securing the blower motor with the blower base D REMOVING MAGNETRON Figure 11 View Stay Duct mag intake After removing the blower motor 1 Remove duct mag exhaust Remove the screw Figure 11 Top View securing the stay 2 Remove 1 screw securing the thermal protector 3 Disconnect 2 lead wires from the magnetron 4 Remove 4 screws securing the magnetron to waveguide 5 Take out Magnetron VERY CAREFULLY NOTE 1 When removing the magnetron from the cavity or wave guide use a proper care so that the dome of the magnetron does not hit any adjacent parts of microwave oven 2 Make sure that the contact face of the magnetron gasket is free from any damage or deformation 3 Adjust the position of the magnetron properly so that it correctly sits in place and the magnetron gasket is in contact with the mounting rim evenly 4 While holding the magnetron under this condition tighten mounting screws or nuts with your fingers temporarily
26. rcuit Board 1 2 617 233 5872 Touch Key Also order 1 7 411 129 5805 SCR TPG BIN 3 x 1071 Control Sheet when replacing 8 617 080 9559 Spring Door Release Lever Touch Key Board 9 617 229 3691 Door Release Lever 3 617 229 3646 Control Frame 1 PRINTED MATTER Items Not Illustrated Key 7 No Part No Description Q ty 617 232 7594 617 230 9095 617 230 7664 Operating Instructions English Spanish Carton Box Complete Name Plate CONTROL CIRCUIT BOARD Part No 617 230 2324 54594V 0 LCDI J105 J104 Di Q106 1J108 Q105 W107 109 C CO 8118 5 3 ax 00 1 6000 10184 50 60 SA zoo 8 fon o 2 C ozr eon 01 GQ a S 5 113 a c IJ 3 178 2 gt 0107 8 0 D 6 170101 GROUND 4 2295 49600 0 0 19 CONTROL CIRCUIT BOARD Part No 617 230 2324 Key No OrderPartNo Description Q ty OrderPartNo Description Q ty INTEGRATED CIRCUIT RESISTORS 409 468 0209 LM8847B 1A43 1 R901 906 401 037 5608 10K ohms 3 909 1 TOW R903 401 038 3603 MT Goze 3 3K ohms 1 Q901 405 138 8506 TR
27. upper switch stopper of lever stopper and lower switch stopper down Figure 10 a 4 Then remove it by lightly pressing the switch toward you Figure 10 5 Make necessary adjustments or replacements of the door sensing switch by reversing step 3 and check microwave energy leakage according to 1 ADJUSTMENT PROCEDURES on page 1 after it is replaced with new one and check proper operation of it according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 Upper Switch Stopper Door Sensing Switch Lower Switch Stopper Figure 10 a REMOVING PRIMARY INTERLOCK SWITCH AND INTERLOCK MONITOR SWITCH Figure 10 b 1 Disconnect all wire leads from primary interlock and Interlock monitor switch 2 Pull the primary interlock switch or Interlock monitor switch upward at the same time while pushing the switch stoppers to allow a space between the switch body and catches 3 Make necessary adjustments or replacement of switch by the reversing step 2 and check micro wave energy leakage according 10 1 ADJUSTMENT PROCEDURES on page 1 after it is replaced with new one and check proper operation of it according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 Switch Stoppers Interlock Monitor Switch Primary Interlock Switch Switch Stoppers Figure 10 b Interlock Switch Replacement when replacing faulty switches be sure switch mounting tabs are not bent broken o
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