MICROWAVE OVEN SERVICE Manual
Contents
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3. Gas Sensor Error Code Gas Sensor Error Case E 1X E 11 Open E 12 Short E 13 T1 Max Time Error E 14 Dry Up No Load Temp Sensor Error Code Temp Sensor Error Case E 2X E 21 Open E 22 Short E 23 T1 Max Time Error Preheating not completed E 24 Over temperature error E 25 In case abnormal temperature is sensed at Micro Cook E 26 In case the temperature is not over the fixed AD in first 3 minutes after cooking by heater starts Weight Sensor ErorCode Sensor Error E 31 Open When value of HEX is above FF for 5 seconds E 32 Short E 33 In case the initial value of HEX 5 14 30 seconds while a weight sensor in operation E 34 In case the initial value of K calculated by a weight sensor is above and under 28 as value of HEX E 35 In case the value of A is as a weight sensor calculates E 36 In case the door opens during sensor cooking Easy Ph Sensor Error Code Easy PH Sensor Error Case 4 E 41 Open E 42 Short E 43 T1 Max Time Error E 44 Dry Up E 45 Cooling Error 3minutes E 46 Primary Open Error 3minutes E 47 The door opens during cooking 25 6 2 Error Code Numbering Rule continued Eeprom Error Error Code EEPROM Error Case E 5X E 51 Open Sense Failure E 53 Read Write Error E 54 Zero not to
4. 410 3mm 758 8mm 3 3 55 Depending on the model that you have purchased you are supplied with several accessories that used in a variety of ways a Registration Wall Template Owner s Manual Installation Hardware Kit Instructions Glass Tray Roller Guide Ring Charcoal Filter Grease Filters 3 4 Installation The Microwave Oven is supported by a special bracket assembly mounting system supplied with the oven The bracket assembly must be mounted to the wall with toggle bolts through the wall and lag screw into a wall stud After the bracket assembly is installed the unit can be slid over the two rails of the bracket assembly Two bolts are run down through the cabinet bottom and into the oven case to the oven up against the cabinet bottom NOTE For easier removal and personal safety it is recommended that two people remove this product Mounting Plate 3 4 1 Caution The mounting surface must be capable of support ing the cabinet load in addition to the 64 pound product plus additional loads of up to 50 pounds or a total weight of 114 pounds This product cannot be installed to cabinet arrangements such as an island or peninsula
5. sna 1 sna ior DE61 90164A HOLDER DIGITRON BLK NYLON 66 BLK MW437 NI 35 9 Schematic Diagrams 9 1 Schematic Diagrams This Document can not be used without Samsung s authorization AC 120V 60Hz BOTTOM 0 129 248 32 F POWER CORD BLK GRA BLK BLK TURBO 5 VENT MOTOR VENT RELAY s L COLOR SYMBOL GRAY GRA VENT MOTOR GRA s TRIAC 1 ORG WHITE WHT zl MOTOR BLACK E CAPACITOR RED D H HOOD T C RED _ BLUE BLU ORANGE ORG 40700 104 158 L 1 AZU 2 EIN YELLON YEL 1472 VIL VIL GREEN GRN PINK PIN P AZURE AU VIOLET VIL LAMP ag BROWN BRN 2 MAIN FUSE p E ZA YEL GRN L 120V 4 4 GRN CO wr ERN if Tav NU gy LOUVER MOTOR BLK 5 CAVITY 0 BLK 120 0C 248 32 F 4 C M G T T C O 150 606 302 140 BLK BLK BLK 9 L V T OVEN LAMP wr aLK BLK 2 T20V MAIN RELAY 3 4 TT AS PRIMARY 9 INTER LOCK S N BLK BLK B F
6. o A qz 1 1 1 1 Pona De72400 2A _ s L moso oeszsosose assvmanpwARE M a CS B018 DE96 00082C ASSY BODY LATCH SMH7175WE XAA ra eS B002 3405 001033 SWITCH MICRO 125 250 16A 200GF SPSTNC MONITOR 001 3405 001034 SWITCH MICRO 125 250VAC 16A 200GF SPST N 2 S 1 2 uos ASSY POWER CORD OTR9 r20ve0HZ Ge suTana 1 S L DE06 00208A BASE PLATE _ sa a xz P122 Erase THERWOSTAT fasse M039 2501 001011 910nF 2100V BK 54x35x75mm 2 2 wes assvevo s L woo DEssoo4soA ASSYAMRERARNESSA SMHTiTaSTEDKAATa001 wo oesrono ASSV BASE BOTTOM SHTITSINCANDESCENTIA 1 SA x2 LaMPANGANDESCENT wowaowonoemm 2 NA SA SA SA SA SA SA SA SA SA SA 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 2 1 2 28 7 2 Main Parts List S N A SERVICE NOT AVAILABLE 1 2 uoos 0 47 00006 HOLDER LAMP 250V 75W 250X187 2POLE OTR 2 SA 1 2 0007 0 61 004068 BASE BOTTOM SMH7175 SEC
7. Qik u er p e 14 93 P 14 5 4 High Voltage Capacitors sseparata Se ag hada eae 15 S o Rigi a pe ao ete antes ed Bien esos E m saan 15 5 6 Relay and Power Control 15 5 7 Adjustment of Primary Switch Door Sensing Switch and Monitor Switch 15 5 8 Vent Exhaust Blower Motor x m _ _ ___ _ ___ _____ ____ 16 5 9 Thermal Gutout S emer peo Dated acies p re 17 5 9 2 Replacement of Flame 17 5 9 1 Oven Thermal Cutout Flame Sensor asea maaua koe aed deve dean ea uha hast 17 5 9 3 Bottom Thermal sre eae n OK e ck c a opa e a T 18 5 9 4 Magnetron Thermal 18 5 9 5 Magnetron Thermal Cutout zi presisa cereo tine WE Eades ee eae 19 5 10 SENSOR edd eee ena WAG og Wigs Me Ea E 19 5 11 Output Power ofMag
8. CR IT LAN e 7 3 4 2 Vent BIOWET rS 7 SAI CHOP LIOM S gt ade 7 95454 OVen Light Lawes what 7 3 5 Reusable Grease Filters isi ccc eck tie Cp aaa as sau uuu sapakama 8 3 5 1 Removing Charcoal 1 8 3 5 2 acu 8 325 3 Grille iis cco tae ate ws eS ape ae 8 3 5 4 Removing Oven From Walli ps scssi eye us qas dea ever neu 8 4 Disassembly and _ _ dee _______ _ Ae 9 4 1 Replacement of High Voltage Transformer and Fan Motor 9 4 2 Replacement of Magnetron acc u us yQ ede arae e wid ob on Robe e Dua 9 4 3 Replacementof DoorASSOmMbly sig 2 rnm o ea aA sucre ws fre osa sug Sede Gd 10 4 3 1 DOOR GET PT 10 4 3 2 Removal OM DOOR
9. MAGNETRON MOTOR ASSEMBLY VENT BLOWER AND HIGH VOLTAGE TRANSFORMER Oven must be removed from wall REMOVING OVEN FROM WALL 2 PEOPLE REQUIRED Oven is hooked on metal tabs at bottom of wall mounting plate and to cabinet by 3 top cabinet bolts 4 1 Replacement of High Voltage Transformer and Fan Motor Assembly Disconnect oven power SCREW SCREW TOP Remove Grille amp Control Box Assembly 2 SCREW i BACK 1 Discharge the high voltage capacitor W i 2 Disconnect all the leads 3 Remove 2 screws from the fan motor assembly 4 Remove 3 screws from the duct side 5 Remove the duct side SCREW 6 Take out the fan motor 7 Remove 4 Screws from the H V Trans SCREW 8 Take out the H V Trans XMEB SCBEWS SIDE 2 EACH SIDE DUCT SIDE 4 2 Replacement of Magnetron Remove the magnetron including the shield case permanent magnet choke coils and capacitors all of MGT NUTS 4 which are contained in one assembly 1 Disconnect all lead wires from the magnetron 2 Remove nuts 4 securing the magnetron to the wave guide 3 Take out the magnetron very carefully NOTE 1 When removing the magnetron make sure that it s antenna does not hit any adjacentparts or it may be damaged NOTE 2 When replacing the magnetron be sure to remount the magnetron gasket in the correct position and make sure the gasket is in good condition CAUTION During replacement be certain R F an
10. eL MICROWAVE OVEN SMH7177STE SERVICE Manual sa MICROWAVE OVEN CONTENTS 1 Precaution 2 Specifications 3 Operating Instructions 4 Disassembly and Reassembly 5 Alignment and Adjustments 6 Troubleshooting 7 Exploded Views and Parts List 8 PCB Diagrams 9 Schematic Diagrams 10 Reference SEA Contents Me ure E 1 1 1 Safety precaullOlis u u u uu epi der _ __ _ 1 1 2 Special Servicing Precautions Continued 1 2 1 3 Special High Voltage Precautions ates bone eu a e e dd te ks aed rdi 2 2 5 DN a 3 2 Table EN CDS Re SNR S 3 3 Operating Instructloris iude eroi d d e 4 3 1 Control Panel nm mote het POR RP Line m ROS RR RR UR PRU ae RUBORE 4 3 2 Features m IB menase drien tiean C r 5 3 2 ACCESSORY L 6 3 4 Installati n LP 7 3 4 1 Caution ak ele A ae genes opa
11. It must be mounted to both a top cabinet and wall 3 4 2 Vent Blower The vent or exhaust blower is located at the top of the oven It is shipped for vertical exhaust but can be changed to rear exhaust or recirculating See installation instrustions on how to change and or blower section on how to remove REMOVE SCREWS 3 4 3 Cooltop Lights One 40 watt screw base incandescent bulbs are located on the bottom between the two grease filters The bulbs are user replaceable by removing one screw and lowering access cover The bulbs could be difficult to remove when replaced for the first time a silicone glue is used to secure them during shipping 3 4 4 Oven Light A 40 watt screw base incandescent bulb is located in the top of the oven cavity at the front It is user replaceable by removing the top grill 2 screws On the front of outer case The bulb is then accessible by removing a metal cover 1 screw 3 5 Reusable Grease Filters The metal filter trap grease released by foods on Charcoal Filter the cooktop They also prevent flames from foods on the cooktop from damaging the inside of the microwave For this reason the filters must ALWAYS be in place when the hood the vent fan is used The grease filter should be cleaned once a month or as needed 3 5 1 Removing Charcoal Filter To remove the charcoal filter disconnect power at the main fuse or circuit breaker panel or pull the
12. TO TEST THE CAPACITOR 1 Remove grille discharge capacitor and disconnect one capacitor lead 2 Make appropriate capacitor check with analog meter needle should rise then fall cap is charging then discharging TO TEST BLOWER WINDINGS 1 Disconnect power and remove grille 2 Open control panel and discharfe capacitor 3 Disconnent two wires to run capacitor Continuity test across the two wires should ve approximately 75 ohms of resistance This test allows you to read across all three windings at the same time TO REMOVE VENT BLOWER 1 Remove unit from its installation 2 Remove 5 screws securing damper and motor as sembly to top and back of unit and lift off 1 screw is located under damper 3 Disconnect blower plug NOTE Place blower wires in routing slots to avoid pinching of wires 16 5 9 Thermal Cutout TCO S There are 4 different thermal cutouts in this unit with 4 different purposes They are 1 Oven thermal cutout flame sensor on cavity top 2 Hood thermal cutout inside control area on duct 3 Bottom thermal cutout on floor of control area 4 Magnetron thermal cutout on magnetron 5 9 1 Oven Thermal Cutout Flame sensor The oven thermal cutout Cavity TCO is located OVEN THERMAL CUTOUT on the top side of the oven cavity beside exhaust duct with a temperature rating of 2480F 120OC and is non resetable The cutout is tightly held to the top of the oven cavity by duct
13. TRIO Yom ar Lom Congelado Congelada de Polo de Pizza 56K Ew MM4148 MM4148 J 47 PO4 44 20 R38 C27 p 47K CN05 SMW250 04V BED VENT m P30 Rie Zt oO P31 P60 48 1 lt w Asar 30 P21 6 mn 002 R20 Rot D F MMESCV1 26 1 5 200K TTE 2 393 8 2 P C B Parts List S N A SERVICE NOT AVAILABLE lever CodeNo Deseo Specification SNSNA Remar RAS OTRTHVOs ASSYPGB PARTS ovnov r sorone RELAWINIATURE avpczonwwaowa rone 9 sa Rn s sono CONNEGTOR HEADER soxaeme mzswusras 3 sna onoo seco aoxemeszamms sw sema 3 SA um Lr 23 sna 58 2096 Reason ________ vawaares x4 2203000192 10onra0 20 sovvevTe 6 sna cis 34 8 2 P C B Parts List S N A SERVICE NOT AVAILABLE Description Specification Qty SNSNA Remark ca 2002 000186 _
14. plug Remove the top grille by removing the 2 Reusable Grease Filters screws that hold it in place 5 Screws Slide the filter towards the filter towards the front of the oven and remove it P di 3 5 2 Automatic Fan An automatic fan feature protects the microwave x from too much heat rising from the cooktop below it If you turned the fan on you may find that you cannot turn it The fan will automatically turn off when the internal parts are cool If may stay on for 30 minutes or more after the cooktop and microwave controls are turned off Remove 2 grille screws to remove the grill 3 5 3 Grille Removal The top full width grille is removable for service B to some components such as oven light cavity T C O vent motor capacitor and fuse TO REMOVE GRILLE 1 Disconnect oven power 2 Remove screws 2 from grille outer case 3 Lift off grille 3 5 4 Removing Oven From Wall 2 Peuple Required Oven is hooked on metal tabs at bottom of wall mounting plate and fastened to cabinet by 3 top cabinet bolts CAUTION Oven weights 63 1 Ibs Requires 2 people for removal 1 Disconnect power cord Top vented models disconnect duct and remove damper assembly 2 Remove 3 top cabinet bolts 3 Pull unit forward slowly providing adequate support to prevent dropping unit during remov al of last top cabinet bolts 4 Disassembly
15. the magnetron filament terminals should indicate one ohm or less 4 A continuity check between each filament terminal and magnetron case should read open 14 Room temperature 20 Filament Terminals Secondary Terminal Primary Terminals Resistance Terminals SLV 1350U P 1 2 Input 127 7 Q 4 5 Output 2 7V 1 80 6 7 Output 7 0V 200 7 8 Output 19 0 480 Magnetron Antenna Gasket Plate 5 4 High Voltage Capacitor 1 Check continuity of the capacitor with the meter set at the highest resistance scale 2 Once the capacitor is charged a normal capacitor shows continuity for a short time and then indicates 9MO 3 A shorted capacitor will show continuous continuity 4 An open capacitor will show constant 9MO 5 Resistance between each terminal and chassis should read infinite 5 5 High Voltage Diode 1 Isolate the diode from the circuit by disconnecting its leads 2 With the ohm meter set at the highest resistance scale measure across the diode terminals Reverse the meter leads and read the resistance A meter with 6V 9V or higher voltage batteries should be used to check the front to back resistance of the diode otherwise an infinite resistance may be read in both directions The resistance of a normal diode will be infinite in one direction and several hundred KO in the other direction 5 6 Main Relay and Power Control Relay 1 The relays are located on the P
16. upper STIRRER MOTOR 5 9 2 Replacement of Flame Sensor Disconnect oven power Remove Grille amp Panel outer 1 Remove screws 3 securing the duct upper 2 Loft up the duct upper from the cavity 3 Disconnect two wire leads 4 Press the top of the thermal cutout and pull out it in the duct upper Press the Flame Sensor After press 17 5 9 3 Bottom Thermal Cutout This cutout will protect the touch control from exces sive heat by turning the vent fan on at low speed If the surface units of the range are used for long periods of time heat will build up and could damage the micro wave control In order to prevent this a thermal cutout is installed on the duct behind the control This cutout will close 158 70 vent fan energized and open 104 40 vent fan de energized depending on temperatures it sense To Remove hood Thermal Cutout 1 Disconnect power and remove grille 2 Remove control box assembly 3 Remove two wire leads and unscrew one screw capturing cutout on base plate NOTE It this cutout were to open it would be difficult to detect The only time it functions is during an overheat condition It will be normally open when checked with an ohmmeter 5 9 4 Magnetron Thermal Cutout THIS COMPONENT REQUIRE REMOVAL OF MICROWAVE OVEN FROM INSTALLATION FOR SERVICING During a fire on the stove the heat could be intense enough to close the Hood Ther
17. 2 P O B Pants List ate ee honing oe we aere 31 9 Schematic Diagrams WES bee weeds png E Verg ade M diis AP 33 10 34 10 1 Model Standen edens up ah ca aa 34 10 2 Customer inquiry cases countermeasures 1 7 35 PRECAUTIONS BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY a Do not operate or allow the oven to be operated with the door open b 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 c 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 d Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be re
18. AN MOTOR 1 BLK BLK rca WT ABT w WHT PIN Bik STIRRER MOTOR 9 1 Wir T TABLE 3 MOTOR RELAY t NS RED BLK LOUVER T MOTOR RELAY 7 BRN SECONDARY INTERLOCK 7 WHT MONITOR INTERLOCK SWITCH MIODLE 4 BLK BLK M WHT 1 SECONDARY INTERL ENSE t H BLY BLU pno ac BLK BLK 0 30 WHTAWT runs ETAT RED INTERNAL GND IN TRANS INRUSH RELAY 0 0459 WHT 69 9 EB t 0 91uF 1 RED MAGNETRON gt BLK HEAT SHRINK H V DIODE NOTE DOOR IS OPEN DDOR SENSE GAS SWITCH TOP SENSOR 36 10 10 1 Model Model name standard Baoad Distin Middle Distin Product Classification guisher Classfication guisher Code USA CMO CMO Counter USA CMO EPOXY CAVITY top MWO iden USA RV Browner Grill COMME USA GRILL Convection EL USA CONVECTION USA Junior Sensor USA CMO SENSOR DC MWO USA DC MWO Hospital MWO USA Hospital MWO Ceramic Enamel ME USA CMO CERAMIC ENAMEL SOLO CONVECTION USA RV SOLO USA RV CONVECTION BUILT IN USA RV BUILT IN USA Junior MWO USA OTR SOLO USA OTR CONVECTION EUROPE Epoxy Cavity SOLO EUROPE SOLO EPOXY CAVITY GRILL EUROPE GRILL EPOXY CAVITY EUROPE Ceramic Enamel EUROPE Quartz GRILL EUROPE Power Grill EUROPE Convection SOLO EUROPE SOLO CERAMIC ENAMEL GRILL EUROP
19. AVE RADIATION FROM MICROWAVE GENERA TOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY The output power of the magnetron can be measured by performing a water temperature rise test Equipment needed Two 1 liter cylindrical borosilicate glass vessel Outside diameter 190 mm One glass thermometer with mercury column NOTE Check line voltage under load Low voltage will lower the magnetron output Make all temperature and time tests with accurate equipment 1 Fill the one liter glass vessel with water 2 Stir water in glass vessel with thermometer and record glass vessel s temperature T1 10 1 3 After moving the water into another glass vessel place it in the center of the cooking tray Set the oven to high power and operate for 41 seconds exactly 3 seconds included as a holding time of magnetron oscillation 4 When heating is finished stir the water again with the thermometer and measure the temperature 2 5 Subtract T1 from T2 This will give you the water temperature rise AT 6 The output power is obtained by the following formula Output Power 4 187 x 1000 x AT 0 55xMcx T2 T1 38 Heating Time sec 38 41 Counting Time sec 4 187 Coefficient for Water 1000 Water cc AT Temperature Rise T2 T1 To Room Temperature Mc Cylindrical borosilicate glass weight 7 Normal temperature rise for this model is 9 9 C to 10 3 C at HIGH NOTE 1 Variations or errors in the tes
20. C BKT DUCT U 1 sa P016 DE61 00410A BRACKET DUCT UPPER SMH7175 SECC T0 5 W20 M067 DE97 00496A ASSY GRILLE SMH7178 mp sss P099 DE61 00128A HINGE GRILLE R JVM 1860 SECC 10 8 1 SA GRILLE P100 DE61 00129A HINGE GRILLE L JVM 1860 SECC 10 8 1 SA GRILLE 1 2 1 2 1 2 1 3 1 3 1 3 1 3 1 3 1 3 1 2 1 3 1 3 1 3 1 3 29 7 2 Main Parts List S N A SERVICE NOT AVAILABLE 1 2 1 2 3 068 DE64 01294A GRILLE SMH7178 PC T2 5 W75 L757 xs 0661 00672 BRACKET COVER swrrwesecoriaw 1 s _ _ 2 _ 55 5 ____ 1 sa OMISPLIOERHN 30 7 3 Control amp Door Parts List S N A SERVICE NOT AVAILABLE D049 DE94 01118C ASSY DOOR SMH7176STE XAA BLACK Pa s SS 1 2 2060 6107 001175 SPRING ES HSWR BLUING PIO 95 D8 5 L4 9 4 0005 DE01 00127A FILM DOOR JVM 1860 POLYESTER 1 1479 0 0 DE64 00759A SMH7175 PP 11 5 BLK DE64 00760A SMH7175 PBT BLK D037 DE94 01117A ASSY DOOR A SMH7178 BLK SCREEN ADHE SION D024 DE64 01292A SCREEN DOOR B SMH7178TEMP GLASST3 2W 1 SA D002 DE64 01295A DOOR A SMH7178 PC T2 5 L619 W327 Lape BLK P156 DE61 00673A BRACKET CONTROL SMH7178 SECC T0 5 FFE PANEL C003 RAS OTR7HV 04 ASSY PCB PARTS SMH7178 120V 60HZ C004 DE34 00205C SWITCH ME
21. C T0 5 W354 5 L75 1 S _____ 1 2 uoo4 DE61 00407A LAMP SMH7175 SECC T0 4 A sn ____ 1 2 0012 DE63 00137B COVER GLASS COOKTOP SMH7175 SECC T0 5 W9 j o 1 2 0005 DE64 00911A GLASS COOKTOP LAMP SMH7175 TEMP GLASS T2 1 sa 1 1 Pooe 0 97 00363 55 PLATE SMH7175 MOUNTING WIR 1 2 125 DE66 00121A WIRE MOUNTING SMH7175 MSWR10 ZNC2 2 1 2 7 DE70 00378A PLATE MOUNTING 7175 T0 8 W130 1 SA 1 1 M021 DE97 00365C ASSY COVER MOTOR SMH7175 SMH7478AS8SYNO 1 SA 12 023 DE31 10177E MOTOR FAN SMF 1850UA1 SMH7175WC 60HZ prs DE2720059A THERMOSTAT ewzuexoosviw wins 1 CAPACITORMOTOR SHM fourazovr0UR oMB S W023 WIRE HARNESS CAM JVM 1860 1 _ ASSY SENSORHUWMITY 1 sa SVHTITSWEDAA P001 DE97 00367A ASSY STIRRER SMH7175 H STIRRER B STIR 1036 DE31 00023A BLADE STIRRER SMH7175 ALP1050 P182 T 7017 DE97 00368A ASSY GUIDE ROLLER SMH7175 SPS G ROLLER R 1 SA TO32 DE97 00369A ASSY WIRE RACK SMH7175WIRACK S RACKASS 1 SA 7030 DE75 00036A RACK WIRE SMH7175 SNC2 D5 1 sna P015 0 97 00411 UPPER SMHT7175B
22. CB Ass y Isolate them from the main circuit by disconnecting the leads 2 Operate the microwave oven with a water load in the oven Set the power level set to high 3 Check continuity between terminals of the relays after the start pad is pressed 5 7 Adjustment of Primary Switch Door Sensing Switch and Monitor Switch PRECAUTION For continued protection against radiation hazard replace parts in accordance with the wiring diagram and be sure to use the correct part number for the following switches Primary and secondary interlock switches and the inter lock monitor switch replace all together Then follow the adjustment procedures below After repair and adjust ment be sure to check the continuity of all interlock switches and the interlock monitor switch 1 When mounting Primary switch and Interlock Moni am tor switch to Latch Body consult the figure 2 No specific adjustment during installation of Pri mary switch and Monitor switch to the latch body is Primary Interlock Switch necessary Ch t 3 When mounting the Latch Body to the oven assem bly adjust the Latch Body by moving it so that the oven door will not have any play in it Check for play in the door by pulling the door assembly Make sure 11 that the latch keys move smoothly after adjustment is completed Completely tighten the screws holding the Latch Body to the oven assembly 4 Reconnect t
23. E GRILL CERAMIC ENAMEL EUROPE Quartz GRILL POWER GRILL EUROPE CONVECTION EUROPE CONVECTION EUROPE Fully SOLO EUROPE SOLO FULLY BUILT IN Built In GRILL EUROPE GRILL FULLY BUILT IN EUROPE CONVECTION FULLY BUILT IN USA SOLO CONVECTION 37 10 2 Customer inquiry cases and countermeasures Symptom Air is evacuated from the oven The oven works au tomatically whenever the power is turned on Heating Ground Turn table occasion ally rotates in reverse order The oven sometimes beeps Cause The vent of the oven is designed to be placed on the bottom of the prod uct and air is evacuated from the oven It may happen due to power failure or abnormal voltage It may happen when the door does not close completely In many cases it may happen when the power level is incorrectly set It may happen when the door does not close completely It may happen when the oven is out of order Ground problem may happen when the oven is placed in a humid area and the over is not grounded Ground is not provided by an extended electric outlet Turntable has been designed to rotate in ei ther direction since 1994 The oven beeps every minute unless the food is in the oven after the food is cooked completely The oven occasionally beeps during cooking Countermeasures In the past the vent was placed on the back panel of the oven Since t
24. ER 5 15 2 At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer 24 6 Troubleshooting PRECAUTION CHECK GROUNDING BEFORE CHECKING FOR TROUBLE BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT DISCHARGE THE HIGH VOLTAGE CAPACITOR WHEN CHECKING THE CONTINUITY OF THE SWITCHES OR TRANSFORMER DISCONNECT ONE LEAD WIRE FROM THESE PARTS AND THEN CHECK CONTINUITY WITHOUT THE POWER SOURCE ON TO DO OTHERWISE MAY RESULT IN A FALSE READING OR DAMAGE TO YOUR METER DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD SINCE STATIC DISCHARGE MAY DAMAGE IT ALWAYS TOUCH GROUND WHILE WORKING ON IT TO DISCHARGE ANY STATIC CHARGE BUILT UP 6 1 Electrical Malfunction SYMPTOM CAUSE CORRECTIONS Oven is dead Fuse is OK No display and no operation at all Q N Open or loose lead wire harness Open thermal cutout Magnetron Open low voltage transformer Defective Ass y PCB Check fan motor when thermal cutout is defective Check Ass y PCB when LVT is defective No display and no operation at all Fuse is blown Q N Shorted lead wire harness Defective primary latch switch NOTE 1 Defective monitor switch NOTE1 Shorted HVCapacitor Shorted HVTransformer NOTE2 Check adjustment of primary interlock monitor power relay door sensing switch NOTE 1 All of these switches must be replaced at th
25. MBRANE SMH7178STE XAA 129 1 P 0011 12 pore EE 1 D024 CEEA 12 coso 1 2 12 coo1 13 coos 1 2 73 13 R066 237 7 4 Standard Parts List S N A SERVICE NOT AVAILABLE uve Description Specification aw SANA 6002 00063 SCREW TAPPING miszewarrzecyensw SAWTYFFONT sweoowrs sceewassv aee wsmsmerzecwe 3 sma DE60 10051A SCREW TAP PH MSWR PH M4 L6 TURNTABLE MOTOR L3 _ vro eorna ____ fe 9 ra soren meene rz SoREW TAPPNG PuazewouazPGveL SWR 2 screw aP Ta remm2sormaeaus 1 2 DE60 100821 SCREW A 77 7 28 AX10 FEFZY 1 SA N FILTER SCREW 6002 000630 SCREW TAPPING PH 2S M3 L8 ZPC YEL SWR HUMIDITY SEN SOR 6002 000643 SCREW TAPPING TH 2S M4 L10 ZPC YEL SW HINGE GRILLE 232 SMW250 07AV_RED 8 1 P C B Diagrams This Document not be used without Samsung s authorization 8 P C B Diagrams IC01
26. MER POWER SOURCE POWER CONSUMPTION OUTPUT POWER OPERATING FREQUENCY MAGNETRON COOLING METHOD OVEN CAVITY DIMENSIONS OUTSIDE DIMENSIONS NET WEIGHT SHIPPING WEIGHT 99 MINUTES 99 SECONDS 120VAC 60Hz MICROWAVE 1 650W FROM 100 TO 1100W 10 LEVEL POWER IEC 705 TEST PROCEDURE 2 450 2 OM75P 10 ERHN COOLING FAN MOTOR 207 W 10 2 H 1412 D mm 29 W x 151519 165520 mm 58 4 Ibs 64 4 Ibs 3 Operating Instructions 3 1 Control Panel 1 2 Sensor Custom Defrost Reheat Cook Popcorn Potato 3 Frozen Pizza Dinner Reheat Frozen Frozen Vegetables Breakfast 4 Handy Helper 5 _ 6 Kitchen T Timer 16 9 Turntable 10 On Off Sensor Reheat Power Defrost Sensor Cook Buttons Handy Helper Kids Meals Snack Bar More Less Number Buttons Power Level Clock am pm Light On Night Off Button Beverage Chicken Breast Fresh Vegetables Turbo Vent 10 Turntable On Off Button 11 One Minute 12 My Choice 13 Custom Cook 14 Start 15 Kitchen Timer 16 Pause Cancel 17 Help 18 Vent Fan Turbo Hi Low Off Button 3 2 Features amp External Views Grill Venilation Holas Oven Light Safety Interlock Holes Control Panel Handle Glass Tray Guide Roller Intake Holes Door Key 404 8mm
27. Sere membrane panel FPC 2 Remove screws 3 securing the control circuit connector board 3 Lift up the control circuit board from the Ass y Screw control box 4 When reconnecting the FPC connector make sure that the holes on the connector are properly engaged with the hooks on the Plastic Fastener M em 5 Alignment and Adjustments PRECAUTION 1 High voltage is present at the high voltage terminals during any cook cycle 2 It is neither necessary nor advisable to attempt measurement of the high voltage 3 Before touching any oven components or wiring always unplug the oven from its power source and dis charge the high voltage capacitor 5 1 High Voltage Transformer 1 Remove connectors from the transformer terminals and check continuity 2 Normal resistance readings are as follows SHV U1870AR Secondary 80 5 2 Filament Shows Continuity Primary 1100W 0 330 2 1000 0 375 2 5 2 Low Voltage Transformer 1 The low voltage transformer is located on the control circuit board 2 Remove the low voltage transformer from the Ass y and check continuity 3 Normal resistor reading is shown in the table 5 3 Magnetron 1 Continuity checks can indicate only an open filament or a shorted magnetron To diagnose an open filament or shorted magnetron 2 Isolate the magnetron from the circuit by disconnecting its leads 3 A continuity check across
28. TRO P85 16 56 8 8 1 Matas 1 5 POWER HIGH P32 P87 18 lao 7G 5 i RAS Z ATK m 24V 5V R52 R53 gt R54 i 55 D10 P33 4 5V 005 65 6 Pos m 10K F3AA024E Roe T 1 d M TRIS MAIN 1 MM O KRC246 m G e 1 100nF i wel LL I 1 E Lc A LOUVER 1 Mo 2 38 52 6 7 8 9 Ayuda oo POO R32 21 47K 37 7 N pasas comida sara do Cancelar Potencia Ayuda Botanas TABLE f D12 35 P15 R33 C22 J i 1 4TK 1 P14 R pido Auo Receta Cron metro Plato Giratorio 250 03AV RED Xm 31 P22 P62 50 T Inicio Descongelado Personalizada de Cocci n rmdidaApagado Mi Opci n Or R34 23 PIR 2 4TK 1 ULL 42 P11 9 VENT r Pilaras Rie 45V POT 47 porso Luz t KRC246 1900F R35 024 R25 R24 se R23 47K aL T Stk Sik 1 AM Kor Se 46 Palomitas Bebida Ventas ow rescos Congelados 47K 24LCO4B E i Ou 5 a 105 Desayuno Cena Puchuga Recalentado K 7
29. al gas sensor which detects both humidity steam and VENT MOTOR hydrocarbons food odors during the cooking process Before conducting either of the sensor tests below ensure the unit is plugged into a will outlet for at least 5 minutes If already plugged in proceed The sensor is a plug in device located in the vent area at the top left hand corner of the cavity behind the grille To Service 1 Disconnect power and remove grille 2 Separate retainer from receptacle and unplug sensor GAS SENSOR SENSOR COOKING TEST 1 Place 1 3 cup tap water in oven 2 Touch the oven starts immediately 3 Control Beeps and Shuts off 4 Touch 1 Test OK Normal 2 Test Fails Check Sensor See Sensor Test Below SENSOR TEST QUICK TEST 1 With 2 fingers touch and hold the following pads at the same time Power Defrost and Sensor Reheat 2 Observe diagnostic number in display Numbers approximate e 15 185 Normal verify with detection test e 213 or Higher Sensor failed to open sensor unplugged wiring or smart board e Less then 6 shorted sensor or smart board NOTE Only heater terminals H Black and Red leads can be checked with ohmmeter 30Q CAUTION DO NOT ATTEMPT TO CHECK SENSOR TERMINALS White and Orange leads CAN DAMAGE SENSOR 19 5 11 Output Power of Magnetron CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROW
30. are with metallic trimming Uneven cooking Uneven intensity of microwave due to its characteristics Wrap thinner parts of the food with aluminum foil Use plastic wrap or cover with a lid Stir once or twice while cooking foods such as soup cocoa or milk Noise from the turntable motor when it starts to operate Noise may result from the motor 23 Replace turntable motor 6 2 Error Code Numbering Rule ERROR CODE NUMBERING RULE is applied to a microwave oven and an oven CMO OTR Grill Convection Commercial etc All sensors devices have their own number ex Gas Sensor 1 Temp Sensor 2 Of each device No 1 and 2 refer to Open Error not sensed and Short Error respectively 4 For unusual cases errors can be indicated in letters after discussion in advance ex Key Short Error SE Error code not mentioned below should be discussed advance and approved by P L numbered reported to relevant departments This numbering rule has been applied to models to have been developed since January 1 2005 But GE or Customize model are excluded E 1 1 T E DEVICE Error Case 0 Others 1 Open 1 Gas Sensor 2 Short 2 Temp Sensor e 3 Weight Sensor 4 Easy PH Sensor 5 24 6 2 Error Code Numbering Rule continued Error Code List
31. be set Humidity Sensor Error Code Humidity Sensor Error Case E 6X E 61 Open E 62 Short E 63 T1 Max Time Error Others Error Code Others E 0X Letter SE Key Short Error 10 seconds E 01 The door opens in case the door should not be opened E 02 Cooking Time Setting Over Error MWO E 03 Cooking Time Setting Over Error Grill E 04 Cooking Time Setting Over Error Convection E 05 Cooking Time Setting Over Error Combination It fails to sense that the swing heater has stopped for 20 id seconds during cooking E 08 In case function of MWO starts with spit inserted into cavity inside E 09 In case the damper is not set to be positioned for 2 minutes 26 7 Exploded Views and Parts List 7 1 Exploded Views 7037 a 27 7 2 Main Parts List S N A SERVICE NOT AVAILABLE 1 1 4713 001013 LAMP INCANDESCENT 130V 40W ORG E17 20 1 SA ASSY DUCT UPPER 1 0 26 000826 TRANS SHV U1870B 120V 60HZ 2460 2220 woos DEsroo2o6 MOTOR VENTILATION r sa oss De6 00576a HOLDER RACK DE63 00196A FILTER AIR SMH7175 AL MESH T2 0 W150 L34 M061 0 63 300160 FILTER CHARCOAL SMH7175 AL T10 W222 L100 001 DE64 00754A PANEL OUTER SMH7175 V STEEL TO 5 0 2 W40 gt wn gt 1 1 1 1 1 5 1 1
32. d the manufacturer s warranty Always unplug the unit s AC power cord from the AC power source before attempting to remove or reinstall any com ponent or assembly Never defeat any of the voltage interlocks Do not apply AC power to the unit or any of its assemblies unless all solid state heat sinks are correctly installed Some semiconductor solid state devices are easily damaged by static electricity Such compo nents are called Electrostatically Sensitive Devices ESDs Examples include integrated circuits and field effect transistors Immediately before handling any semiconductor components or assemblies drain the electrostatic charge from your body by touching a known earth ground 1 2 Special Servicing Precautions Continued 16 Always connect a test instrument s ground lead to the instrument chassis ground before con necting the positive lead always remove the instrument s ground lead last 17 When checking the continuity of the witches or transformer always make sure that the power is OFF and one of the lead wires is disconnected 18 Components that are critical for safety are indi cated in the circuit diagram by shading or 1 3 Special High Voltage Precautions 1 High Voltage Warning Do not attempt to measure any of the high volt ages this includes the filament voltage of the magnetron High voltage is present during any cook cycle Before touching any components or wiring a
33. door parallel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment 2 Adjust so that the door has no play between the inner door surface and oven front surface If the door assem bly is not mounted properly microwave energy may leak from the space between the door and oven 3 Do the microwave leakage test 4 4 Replacement of Main Fuse amp H V Trans Fuse The fuse is located behind the control panel mounted to the installation bracket 1 Disconnect power and remove grille 2 Remove a screw that secure the installation bracket MAIN FUSE 1 When 20A fuse blows out by the operation of interlock monitor switch failure replace the primary interlock switch door sensing switch interlock monitor switch and power relay MAIN FUSE FUSE amp FUSE HOLDER When the above 3 switches operate properly check if any other part such as the control circuit board blower motor or high voltage transformer is defective H V TRANS FUSE 1 When 20 Amp fuse is blown due to operation of the H V Trans fall mode the H V Trans Fuse must be replaced 4 5 Replacement of Drive Motor 1 Disconnect power 2 Remove the three screws at the assy base bottom 3 Remove the plastic cover fixed with a screw that BASE PLATE covers the motor 4 Remove all of the wires connected 5 Remove a screw from the motor 6 Turn the motor to th
34. e right and remove it T After replacing the motor you should re install it on the accurate position of the coupler 8 Assembling is in the reverse order to disassebling DRIVE MOTOR 11 4 6 Replacement of stirrer motor Disconnect power and remove grille screws 2 2 Remove grille and the bracket duct upper screw 1 3 Remove the bracket duct upper and disconnect the stirrer motor wire 4 Remove stirrer motor screws 1 and lift up stirrer motor after turn left 4 7 Removal of stirrer STIRRER MOTOR The stirrer is located on the upper side of the cavity The oven uses a top feed wave guide 1 Disconnect power and open the door 2 Remove the clip and turn the stirrer cover left 3 Remove stirrer cover and the stirrer will come with it 4 Replace the clip if the clip head broken CLIP COVER STIRRER STIRRER ASSEMBLY COVER STIRRER 12 4 8 Replacement of Control Circuit Board 4 8 1 Removal of Control Box 1 Disconnect power and remove grille 2 Remove a screw securing the control box assembly 3 Be sure to ground any static electric charge in your body and never touch the control circuit 4 Disconnect the connectors from the control circuit board 4 8 2 Removal of P C B Assembly Pull the lever end of the plastic fastener and remove the Flexible Printed Circuit FPC of
35. e same time refer to adjustment instructions Check continuity of power relay contacts and if it has continuity replace power relay also NOTE 2 When HVTransformer is replaced check diode and magnetron also Oven does not accept key input Program Key input is not in Sequence Open or loose connection of membrane key pad to Ass y PCB Shorted or open membrane panel Defective Ass y PCB Refer to operation procedure Replace PCB main Timer starts countdown but no microwave oscillation No heat while oven lamp and fan motor turn on Off alignment of latch switches Open or loose connection of high volt age circuit especially magnetron fila ment circuit NOTE Large contact resistance will bring lower magnetron filament voltage and cause magnetron to lower output and or intermittent oscillation Defective high voltage components H V Transformer H V Capacitor H V Diode Magnetron Open or loose wiring of power relay Defective primary latch switch Defective power relay or Ass y PCB Adjust door and latch switches Check high voltage component ac cording to component test proce dure and replace if it is defective Replace PCB main 22 6 1 Electrical Malfunction continued SYMPTOM CAUSE CORRECTIONS Oven lamp and fan motor turn on 1 Misadjustment or loose wiring of pri mary latch switch 2 Defective primary latch
36. he oven was placed near the wall of a kitchen the wall behind the oven was discolored Thus the vent of a new oven is placed on the bottom of the product and air is evacuated from the oven Connect the power plug three seconds after discon necting the power plug Close the door completely gt Press the Cancel button gt Press the Start button Select HIGH by rotating the Cooking Power Control knob KEEP WARM This function is used to warm the cooked food for a certain time period not to heat the food MEDIUM LOW This function is used to cook the food slowly Close the door completely gt Press the Cancel button gt Press the Start button Contact the nearest Samsung after sales service center If the oven is placed in a humid area buy an electric wire in a store selling electrical products Electric wires for home use are also allowed Ground the oven through the electric wire Buy an electric wire in a store selling electrical products Electric wires for home use are also allowed Ground the oven through the electric wire In the past the gear of the turntable was easily worn by turning it during cleaning Now the turntable of the oven is designed to rotate in both directions to prevent damage during cleaning Rotation direction is set when the oven initially operates Open and close the door again Beeping sounds indicate that the food is ready to be removed from the oven after cooking is c
37. icrowave Leakage 1 Remove the outer panel 2 Pour 275 15 of 20 5 68 9 water a beaker which is graduated to 600cc and place the beaker in the center of the oven 3 Start the oven at the highest power level Set survey meter dual ranges to 2 450 2 5 Using the survey meter and spacer cone as described above measure near the opening of magnetron the surface of the air guide and the surface of the wave guide as shown in the following photo but avoid the high voltage components The reading should be less than 4mW cm 5 14 Note on Measurement 1 Do not exceed the limited scale 2 The test probe must be held on the grip of the handle otherwise a false reading may result when the opera tor s hand is between the handle and the probe 3 When high leakage is suspected do not move the probe horizontally along the oven surface this may cause damage to the probe 4 Follow the recommendation of the manufacturer of the microwave energy survey meter 5 15 Leakage Measuring Procedure 5 15 1 Record keeping and notification after measurement 1 After adjustment and repair of a radiation preventing device make a repair record for the measured values and keep the data 2 If the radiation leakage is more than 4mW cm 2 after determining that all parts are in good condition function ing properly and the identical parts are replaced as listed in this manual notify that fact to CENTRAL SERVICE CENT
38. lways unplug the oven and discharge the high voltage capacitor See Figure 1 1 2 The high voltage capacitor remains charged about 30 seconds after disconnection Short the nega tive terminal of the high voltage capacitor to the oven chassis Use a screwdriver 3 High voltage is maintained within specified limits by close tolerance safety related components and adjustments If the high voltage exceeds the specified limits check each of the special compo nents PRECAUTION There exists HIGH VOLTAGE ELECTRICITY with high current capabilities in the circuits of the HIGH VOLTAGE TRANSFORMER secondary and fila ment terminals It is extremely dangerous to work on or near these circuits with the oven energized DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron 19 Use replacement components that have the same ratings especially for flame resistance and dielectric strength specifications A replacement part that does not have the same safety charac teristics as the original might create shock fire or other hazards High Voltage Capacitor Fig 1 1 Discharging High Voltage Capacitor PRECAUTION Never touch any circuit wiring with your hand nor with uninsulated tool during operation PRECAUTION Servicemen should remove their watches when ever working close to or replacing the magnetron 2 Specifications 2 1 Table of Specifications TI
39. mal Cutout and force the fan to run While at moderate high temperature we do want it to run however during a fire it is advantage ous to NOT have the vent fan running So if a fire were to start on the stove top the Bottom Thermal Cutout would open at 248 F 120 C and remove all power to the microwave oven This cutout is designed to not be resetable To Remove Bottom Thermal Cutout 1 Disconnect power and remove grille 2 Remove control box assembly 3 Remove two wire leads and unscrews one screw capturing cutout on base plate 18 HOOD THERMAL CUTOUT BOTTOM THERMAL CUTOUT HOOD THERMAL CUTOUT BOTTOM THERMAL CUTOUT 5 9 5 Magnetron Thermal Cutout The magnetron thermal cutout is located above the MAGNETRON THERMAL CUTOUT leads to the magnetrons It is designed to prevent damage to the magnetron if an overheated condition develops in the tube to cooling fan failure obstructed air ducts dirty or blocked air intake Under normal operation the magnetron thermal cutout remains closed However when abnormally high temperatures are reached within the magnetron the magnetron thermal cutout will open at 320 160 causing the oven to shut down After the temperature drops to 140 F 60 C it will reset and cooking will be able to resume To Remove Magnetron Thermal Cutout 1 See Removing Magnetron MAGNETRON 5 10 Sensor The Sensor Cooking Function uses a speci
40. nelrorni oh que ede Whe So veda tele Andee eae 20 5 12 Procedure for Measurement of Microwave Energy 21 5 13 Check for Microwave Leakage toris eee cence in tte Up BACK OUR 21 5 14 Note on Measurement ua error x edad Heese SERA Oba OCT RO Rond REOR Ra e Ue Ro Ro RU eae don 21 5 15 Leakage Measuring Procedure cs seas nerra daa ineo ore E e d oe val aides Ron e Rb eR 21 SET FOUDISSMOOUMG u aZ Dam S TELE 22 6 1 Electrical Malfunction 6 2 Error Gode Numbering iea mpi E Y UR 22 7 Exploded Views and List secsi bet ed ora eot s dea a obs bod ded 24 7 1 Exploded VIeWS pr tk eec x deceat Pee d didi O 24 1 2 P mm 25 7 3 Control amp Door Parts Dist eot bad DR UR EUR AR UR a RU LR 28 7 4 Standard Parts aie dah e n tar epa 29 S P O s MB Te Ir TO aaa waya 30 8
41. o Monitor switch and check the continu ity of the monitor circuit and all latch switches again by following the components test procedures Lever Switch A Confirm that the gap between the switch housing and the switch actuator is no more than 0 5mm Body Latch Interlock Monitor Switch Door Sensing Switch Secondary Interlock Switch when door is closed Door Open Door Closed 6 Interlock Switch Replacement When replacing Primary Interlock S W 0 faulty switches be sure switch mounting tabs are Monitor switch COM NC 0 not bent broken or otherwise deficient in their abil Door Sensing S W 0 ity to secure the switches in place Secondary Interlock S W 15 5 8 Vent Exhaust Blower Motor THIS COMPONENT REQUIRE REMOVAL OF MICROWAVE OVEN FROM INSTALLATION FOR SERVICING The blower is a two speed HI LO capacitor run blower assembly located on top of the micro wave oven The blower is operated by low voltage relays located on the smart board The blower motor has 3 winding which can be tested for continuity from the front by removing the top grille and opening the control panel RUN CAPACITOR The run capacitor is located behind the top grille above the control area The capacitor is used for more torque and electrical phasing Without the capacitor the blower might run but would be much slower
42. ode gasket is in place around anode stub PERFORM MICROWAVE LEAKAGE TEST 4 3 Replacement of Door Assembly 4 3 1 Removal of Door Open the door and remove the door by pulling up from hinge holes 4 3 2 Removal of Door E Following the procedure as shown in the figure insert and bend a thin metal plate between Door E and Door A until you hear the tick sound e Insertion depth of the thin metal plate should be 0 5mm or less 4 3 3 Removal of Key Door amp Spring Remove pin hinge from Door Detach spring from Door E and key door Door icf u 0 LI LI D Da HJ dE G Eb Lr tu TN fu Ry L IE B m Door E H m m m Key Door E Sprin m 5 2 Pie id cpu OZS aJ 10 4 3 4 Reassembly Test After replacement of the defective component parts of the door reassemble it and follow the instruc tions below for proper installation and adjustment so as to prevent an excessive microwave leakage 1 When mounting the door to the oven be sure to adjust the
43. omplete 38 10 2 Customer inquiry cases and countermeasures Continued Strange popping sounds are produced while fish is cooked Since fish is salty and maintains its moisture it is cooked while making a series of soft popping sounds The liquid may come out of the fish when the fish is cooked Strange smell is produced in the oven It may happen when food particles stuck to oven walls or floor Errors are classified into the case which is out of order and the case which is not out of order u Number does not It happens when the appear on the display power saving function Screen is activated Food with bones such as fish e g mackerel and pork e g pork chops is cooked while making a series of soft popping sounds Wrap the food completely so that food particles or spattered oils do not stick to the oven walls or floor Clean the inside of the oven gt Remove strange smell through the Deodorant button gt If the strange smell still remains place a piece of lemon on the turntable and operate the oven for 5 minutes by pressing the Deodorant button However the smells produced from the food exposed such as herbal remedies are not removed Clean the inside of the oven gt Remove strange smell through the Deodorant button gt If the strange smell still remains place a piece of lemon on the turntable and operate the oven for 5 minutes by pressing the Deodorant button Howeve
44. paired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A Microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner 1 Precaution Follow these special safety precautions Although the microwave oven is completely safe during ordinary use repair work can be extremely hazardous due to possible exposure to microwave radiation as well as potentially lethal high voltages and currents 1 1 Safety precautions 1 repairs should be done in accordance with the procedures described in this manual This product complies with Federal Performance Standard 21 CFR Subchapter J DHHS Microwave emission check should be performed to prior to servicing if the oven is operative If the oven operates with the door open Instruct the user not to operate the oven and con tact the manufacturer and the center for devices and radiological health immediately Notify the Central Service Center if the microwave leakage exceeds 5 mW cm Check all grounds Do not power the MWO from a 2 prong AC cord Be sure that all of the built in protective devices are replaced Restore any missing protective shields When reinstalling the chassis and its assemblies be sure to restore all protective devices including nonmetallic control knobs and compartment covers Make
45. r the smells produced from the food exposed such as herbal remedies are not removed Visit the nearest Samsung Service Center or local dealer to buy accessories Before visiting check the model name printed on the lower right side of the front panel of the oven Since the government recommends the reduction of electricity the power saving function is performed for number display like that power cord is unplugged when the oven is not used Numbers are displayed when another button is pressed or when the door opens 30 ELECTRONICS This Service Manual is a property of Samsung Electronics Co Ltd 2 Co Ltd July 2005 Any unauthorized use of Manual can be punished under applicable 25 j Bead International and or domestic law Sue tes
46. sure that there are no cabinet openings through which people particularly children might insert objects and contact dangerous voltages Examples Lamp hole ventilation slots Inform the manufacturer of any oven found to have emission in excess of 5 mW cm Make repairs to bring the unit into compliance at no cost to owner and try to determine cause Instruct owner not to use oven until it has been brought into compliance CENTRAL SERVICE CENTER 10 Service technicians should remove their watches while repairing an MWO 11 To avoid any possible radiation hazard replace parts in accordance with the wiring diagram Also use only the exact replacements for the following parts Primary and secondary interlock switches interlock monitor switch If the fuse is blown by the Interlock Monitor Switch Replace all of the following at the same time Pri mary door sensing switch and power relay as well as the Interlock Monitor Switch The correct adjust ment of these switches is described elsewhere in this manual Make sure that the fuse has the cor rect rating for the particular model being repaired Design Alteration Warning Use exact replacement parts only i e only those that are specified in the drawings and parts lists of this manual This is especially important for the Interlock switches described above Never alter or add to the mechanical or electrical design of the MWO Any design changes or additions will voi
47. switch Adjust door and latch switches Oven can program but timer does not start 1 Open or loose wiring of secondary interlock switch 2 Off alignment of primary interlock 3 Defective secondary interlock S W Adjust door and interlock switches Microwave output is low Oven takes longer time to cook food Decrease in power source voltage Open or loose wiring of magnetron fila ment circuit Intermittent oscillation 3 Aging of magnetron Consult electrician Fan motor turns on when plugged in Loose wiring of door sensing switch Check wire of door sensing switch Oven does not operate and return to the plugged in mode Defective Ass y PCB Replace PCB main Loud buzzing noise can be heard 1 Loose fan and fan motor 2 Loose screws on H V Transformer 3 Shorted H V Diode Tighten screws of fan motor Tighten screws of H V Transformer Replace H V Diode Turntable motor does not rotate 1 Open or loose wiring of turntable motor 2 Defective turntable motor Replace turntable motor Oven stops operation dur ing cooking 1 Open or loose wiring of primary inter lock switch 2 Operation of thermal cutout Magnetron Adjust door and latch switches Sparks 1 Metallic ware or cooking dishes touch ing on the oven wall 2 Ceramic ware trimmed with gold or Silver powder also causes sparks Inform the customer Do not use any type of cookw
48. t procedure will cause a variance in the temperature rise Additional power test should be made if temperature rise is marginal NOTE 2 Output power in watts is computed by multiplying the temperature rise step 5 by a factor of 91 times the of centigrade temperature 20 5 12 Procedure for Measurement of Microwave Energy Leakage 1 Pour 275 15cc of 20 5 C 68 9 F water in a beaker which is graduated to 600cc and place the beaker in the center of the oven 2 Start to operate the oven and measure the leakage by using a microwave energy survey meter 3 Set survey meter with dual ranges to 2 450MHz 4 When measuring the leakage always use the 2 inch spacer cone with the probe Hold the probe perpendicular to the cabinet door Place the spacer cone of the probe on the door and or cabinet door seam and move along the seam the door viewing window and the exhaust openings moving the probe in a clockwise direction at a rate of 1 inch sec If the leakage testing of the cabinet door seam is taken near a corner of the door keep the probe perpendicular to the areas making sure that the probe end at the base of the cone does not get closer than 5cm to any metal If it gets closer than 5cm erroneous readings may result 5 Measured leakage must be less than 4mW cm after repair or adjustment Maximum allowable leakage is 5bmW cm 4 is used to allow for measurement and meter accuracy 5 13 Check for M
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