3. Disassembly and Reassembly
Contents
1. NOISE FILTER CN201 MGT BO LITER BOTTOM UNIT IS PLUGGED IN Ww E NV AER AL en B a CLOCK 1S WORKING LOOT FUSE 20A L V T NOISE FILTER MGT CAVITY BOTTOM SR TCO _TCO TCO DOOR IS OPEN lw B B a B OVEN LAMP 1S ON LOOT e oa FUSE 20A LVT MAIN CN201 N RELAY Tale X6 0o NOISE FILTER um MCT CAVITY BOTTOM COOKTOP LAMP IS ON W E wt NAN at HS 007 FUSE 20A LVT LAMP CN201 7 RELAY 5 ZC NOISE FILTER MCT CAVITY BOTTOM SEET WOO 100 TCO VENT MOTOR IS ON B l ae ER C007 FUSE 20A AUTOMATICALLY ur CN202 TRIAC CN202 V NOISE FILTER Dum MGT CAVITY BOTTOM ICO on IO MICROWAVE L009 7 B a 6 6 B ob cave BoA 45 COOKING 1S ON FUSE 204 L VT MAIN CN201 n RELAY To ap ow PRIMARY SW jM en B OFM Y Ep IT MOTOR M 20 7 RELAY AN ERT 7 0 U DI POWER w RELAY BL Br HIGH VOLTAGE B e 9 S p ITE FUSE 20A D106 12V 5V ST101 UF4007 ST SM3GV C106 o 470uF PTC101 3904 KN p POWER SUPPLY in 5V 24V L15 NAGA F E 1N4007 C107 ll Zou ll ZNR101 5 100471 1l BEEN 2 SEEN Wee E bo2. COLOR SYMBOL GRAY GR WHITE BLACK RED R BLUE BL ORANGE 0 YELLOW y GREEN C PINK P AZURE A VIOLET Y AC120V 60Hz SC T N L EN 1 GROUND POWER CORD BOTTOM IC OU 120 0 C 248 32 F WZ B1 B2 _ 6 a B 202 E ds A 4 a 7 VENT l RELAY 2 VENT MOTOR 70uH MIN W2 Bi We VENT MOTOR CAP M a e TRIAC EE 470 kohm WO vA NA mn 5 a yi Shh WHS R3 Jo S B3 D 4 LAMP 3 s Cu BL4 i RELAY SE V COOKTOP LAMP E we DAVIS EE Bs 100 0 C 212732 F D 2 NIGHT BRI B4 M G T T C O 150 60 C 302 140 F B7 9 O B5 L V T 3 B6 9 PRIMARY NG e OVEN LAMP INTER LOCK Can o S IN ov e 120V ss g FAN MOTOS La O or 2 yA Y2 B11 I TABLE 2 i 202 1 02 om O B W4 o URI WE MOTOR 21V SECONDARY RELAY 1 gt Low Power j T R1 n Bg W5 MONIT TOR INTERLOCK SWITCH MIDDLE e Mr En H V TRANS FUSE Hi Power B2 H V TRANS FUSE BL3 g On O R2 DS I NRUSH e RELAY gt 0000000000 eh F R eegen MT A 60 660 d NT Fr H V CAPACITOR m FA m F R R 0 O R R e e gt d Amy MAGNE TRON Eu eg SE SE LO o SENSOR O DOOR Geen HOOD T C O SWITCH 40 70 C TOP 104 158 r CN40 1 CN O1 CN40 1 7 Wiring Diagrams 7 1 Wiring Diagrams This Document can not be used without Samsung s authorization
3. vs R403 gu LO 5 No TR501 CB R 2K mo fy DOOR KRC246M T LV R HIGH R lt Jus TR401 M R R404 R405 C402 R401 C401 SEN pa 470 2K 100nF 10K 100nF VENT LOW R lt TR502 TR503 TR504 3 KRC246M KRC246M KRC246M kEY 7 Ka SS C KEY 6 O kEv 5 7 1N4148M N4148M N4148M N4148M N4148M N4148M N4148M N4148M 1N4148M O B gt Ladder 1 gt lt IKEY 4 Door os eo Do Dos MA Deor NANG bes AL bebe Ad O i 4 BZ N Ladder 2 gt lt _ KEY 3 CN401 y D201 INT SMW250 05V_WHT E E 1N4148M lt Ikey 2 lt lt Vm 5 lt JKEY 1 CN201 a POWER L BZ S C113 SMW 250 09AV RED RY203 1nF O DU12D1 1P D202 O 1N4148M CN601 lt POWER L lt 7 12516HS 16 Q RY202 POWER H POWER H lt 9 Co O 00 Q G5T 1A 12VDC 9 s s N INRUSH lt TR201 TR202 TR203 O PTC201 YN MIU AR KRC246M KRC246M KRC246M Dale 270M 1N4148M O d lt CH CH OO XI rn INRUSH AE Ne R601 2K O RY205 412V NM KEY 1 lt Dei G5T 1A 12VDC 8 K C P R H HESS D204 D211 MM4148 1T4 lt rr R602 y 2K D214 lt 1N4148M icm m RY206 SR ZE 5V CN202 G5T 1A 12VDC SMW250 07AV_RED TR204 R60 2K Q N M48 BRIGUT eat Sek KEY 3 lt 14 d CN402 O lt mea SMW250 03V_WHT O RY207 KRC246M O G5T 1A 12VDG C KEY 4 lt R604 2K 13 VT C D206 A R201 LSI I NMM4148 100 Q lt C202 L1 1 LOUVER 10uF R605 2K OH RY208 VT HIGH KEY 5 lt 7 12 G5T 1A 12VDC LOUVER CIRCUIT
4. 24 5 Exploded Views and Parts List 66900 000054 065045 0048840000096 ARA EG R ROLE RREOEG XC 27 5 1 Exploded Views 21 A ANS EE 28 e DO Pars A 30 eo PP Rada quad RC EP RI ENTIRE TERRE RM eee dnd 31 Oo anga ONS M C 32 AA PP nn 33 O EE 33 6 2 PCB DIS TE EE 34 ENKE sarria ar a a A is ee e Nr 35 fG Kise DI aga Sa series saga TION OTT TOOL RTT TT LT LT Ji KN e a Ta Te Aa Ka a TK 35 B acne A e 37 8 1 Schematic Diagrams praia a ea 37 1 Precaution PRECAUTIONS TO 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 repaired
5. 3 2 Replacement of High Voltage Transformer and HVC and Base bottom Explaination Explaination Photo Disconnect Oven Power Remove Panel Outer Discharge The High Voltage Capacitor A ATTENTION When discharge must become ground terminal of HVC and metal of around High voltage capacitor 4 Remove screw 1 5 Disconnect the Lead Wire Remove Screw 5 Disconnect Lamp Housing Base Bottom Remove Base bottom Disconnect Oven Power Remove the Base bottom ae and Panel HV Trans mm s ee Outer i p LEE e Disassembly the Bracket Duct upper after remove screw 3 Disassembly and Reassembly 3 2 Replacement of High Voltage Transformer and HVC and Base bottom 4 Disconnect the Lead Wire HV Trans 5 Remove screw 3 6 Take out the HV Trans 3 Disassembly and Reassembly 3 3 Replacement of Magnetron Remove the magnetron including the shield case permanent magnet choke coils and capacitors all of which are contained in one assembly 1 Disconnect all lead wires from the magnetron Magnetron Remove nuts 4 securing the magnetron to the wave guide Take out the magnetron very carefully NOTE1 When removing the magnetron make sure that it antenna does not hit any adjacentparts or it may be damaged NOTE2 When replacing the magnetron be sure to remount the magnetron gasket in the correct position and make sure the gasket is in good condition A
6. D207 NMM4148 VT HIGH 5 C LOUVER KEY 6 lt P OR A E Gi RY201 T TABLE VT LOW G5T 1A 12VDC S NIGHT D208 S R60 2K Ge NMM4148 BRIGHT KEY 7 lt Go E lt T TABLE 5V 5V MAIN D RY209 hed G5T 1A 12VDC TR206 TR210 R301 R302 0 KRC246M KRC246M KRC246M KRC246M KRC246M 26 1K 19 1K N TEM D209 NMM4148 LV R HIGH R RS O lt lt i KIA75S358 VT LOW 47K G AR601 ZD301 irum D UZ5 6BSB LOW R L202 N R L1 1 72uH 5V C R CB R lt VENT PT201 R202 TR211 CN301 a TLP 560J 1 470 KRA226 AT SMW250 04V_RED GAS SENSOR CIRCUIT T835 600B TAC201 3 3K 0 Q L O js e D QO af d This Document can not be used without Samsung 6 2 PCB Diagrams 7 Wiring Diagrams 7 1 Wiring Diagrams This Document can not be used without Samsung s authorization
7. ELECTRONICS GSPN Global Service Partner Network Contry Web Site North America service samsungportal com latin samsungportal com cis samsungportal com europe samsungportal com china samsungportal com asia samsungportal com mea samsungportal com ISE EEES RENE EIER ee fan Samsung Electronics Co Ltd March 2009 Any unauthorized use of Manual can be punished under applicable Printed in Korea International and or domestic law Code No DE68 05344A
8. 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 4 3 Electrical Malfunction Oven is dead No display and no operation at all CAUSE Open or loose lead wire harness Open thermal cutout Magnetron Check fan motor when thermal cutout is defective Open low voltage transformer Check Ass y PCB when L V T is defective Defective Ass y PCB o NUES if Shorted lead wire harness Defective primary latch switch NOTE 1 CORRECTIONS Defective monitor switch NOTE 1 Check adjustment of primary interlock monitor E i power relay door sensing switch Shorted H V Capacitor E Shorted H V Transformer i NOTE 2 Oven does not accept key input Program CAUSE Key input is not in Sequence Refer to operation procedure Oven does not accept key input Open or loose connection of membrane key pad to Ass y PCB Shorted or open membrane panel Defective Ass y PCB Replace PCB main d Troubleshooting Timer starts countdown but no microwave oscillation No heat while oven lamp and fan motor turn on CAUSE Timer starts Off alignment of latch switches Adjust door and latch switches countdown but no microwave Open or loose connection of hi
9. eege pe lena fassvooore swmuscomws HH H o pes leen James Tanagra 1 sa pes oes Joer mermar 1 SA oer oes SPRNGKEY RuNGPSWReiespe SR i sa oo osse poonxev wopuamaeOW RK HH sa al Cs Dus ocorrera Lena Iosemae HH a a lI wech we wesch gt D059 DE64 02228A BADGE LOGO SMH9187 AL1070 H16 T1 3 W10 L 1 SN 5 Exploded Views and Parts List 5 4 Control Parts List S N A SERVICE NOT AVAILABLE No Code No Description Specification Q ty SA SNA Remark C001 DE94 02001A ASSY CONTROL PANEL SMH9187 BLACK PC C004 DE34 00330A SWITCH MEMBRANE SMH9187B PET 120V C082 DE94 01999A ASSY CONTROL BOX SMH9187 120V60HZ BLACK al 9 S Aa sua os pestes BRACKET CONTROL PANEL Lousen 1 9M os pese ASSY BRACKET Pane swewrseccma HHH ooo 5 Exploded Views and Parts List 5 5 Standard Parts List S N A SERVICE NOT AVAILABLE Level Code No Description Specification Q ty SA SNA Remark 6002 000643 SCREW TAPPING TH 2S M4 L10 ZPC YEL SW EE GE sw oue ooo BRACKET BARRIER BRACKET D 1 1 DE60 10062A SCREW TAP TH FEFZB TH M4 L12 EM UPPER CONTROL BOX BASE BOTTOM P OUTER V 1 1 DE60 10067A SCREW TAP TH FEFZB 2 SLOT TH MA L8 EM MOTOR PANEL OUTER B PLATE 8 CVT BACK BKT 1 1 DE60 10082I SCREW A 29 4X10
10. 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 A 1 All repairs should be done in accordance with the procedures described in this manual This product complies with Federal Performance Standard 21 CFR 2 Microwave emission check should be performed to prior to servicing if the oven is operative 3 Ifthe oven operates with the door open Instruct the user not to operate the oven and contact the manufacturer and the center for devices and radiological health immediately 4 Notify the Central Service Center if the microwave leakage exceeds 5 mW cm2 5 Check all grounds 6 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 7 When reinstalling the chassis and its assemblies be sure to restore all protective devices including nonmetallic control knobs and compartment covers 8 Make sure that there are no cabin
11. A B ODE 0000800 IN N CNN A CN KZ S WSS o E St e L X INNY SS SS NG lt SS WSs SS SS 5 Exploded Views and Parts List 5 2 Main Parts List S N A SERVICE NOT AVAILABLE No Code No Description Specification RA SA SNA Remark B001 3405 001034 SWITCH MICRO 125 250VAC 16A 200GF SPST N 2 SA B002 3405 001033 SWITCH MICRO 125 250VAC 16A 200GF SPSTNC ENN ER ebe Jena Jus prp Pss peos ooien Lea H sa wer oes ASSYNOSE FILTER Taaza o woroesanmssc ASSYCOVERMOTOR swwussueweasvwo i a emoewomes eem ra 1 S s pesar memwoswr Taassen leiwe wn peor Jong Lass EN a Eoo OC HTH ES wanns LAMPINCANDESCENT mwwwomeEWG 1 SA wose arsons LAMPINCANDESCENT Lezmeena aja rose Teams Tapan E EN S wn mwawen cot orzeka a 9 amp wen pesraorisa BRACKET Iammeseecnms HHH Eoo won oscmes Lean aaas net Ill AE Jaen Lasgsgen mawon ajaa wa pesraososa BASE PLATE Jemen 1 a em woroRs cvs A sa umee Des oer eessen Iessen 1715 mm 8 we eee Jomes jama pow p elen eene euni eeleren Josee mees ie we pesar ASSYBASEPLATE Imse geengen ln Fone a Leem Iagmseuag Jila wor oeren ASSYSTIRRER SUHTVSHSTERERMASTRRER i SA eer DETOGOSO1A PLATEMOUNTNG Jesse HH sa iessen emsoss f sa mis oesrooen Jemen Tae
12. FEFZY 16 DUCT REAR DUCT UPPER FAN 1 1 DE60 30015A NUT FLANGE M5 P0 8 MSWR10 FEFZY NA NA NA SA A SA NA SA A SA MOTOR MOUNTING PLATE PANEL SA 1 2 DE60 10111A SCREW LAG MSWR W1 4X50 NA NA NA NA SA NA NA SA SA A SA A SA PH 2S M3 L8 ZPC YEL SWR a Jemen NUTMOUNTING eene o a OO OOo EEN HANDLE DOOR E PCB S S S S S S OUTER VENT MOTOR S S DE60 20066A BOLT FLAT UNF1 4 L110 MSWR10 OTR6 S S S S ASSY DIODE S S S mot SNA SNA SNA 3 SNA SA SNA SNA Eu SA SA SA SA 8 9M MGY ARTS NO DE41 003524 HAR 20 2007 Number 1 CN201 JA Terminal for connecting with SMPS Power Supply A Terminal for Connecting with Inrush Relay Lamp Louver and SMPS Power Supply 2 CN202 A Terminal for connecting with T T and Vent A Terminal for Connecting with T T Vent and SMPS Power supply 8 CN301 A Terminal for connecting with Gas Sensor A Terminal for Detecting Gas Sensor and SMPS Power suppl 4 CN401 A Terminal for connecting with Door A Terminal for Connecting Door and SMPS Power suppl 5 CN601 JA Terminal for connecting with Connector A Terminal for Connecting with Connector and SMPS Power Supply 6 RY201 Main Relay Power Supply Relay 7 RY202 Inrush Rela Inrush Electric Current Decrease Device 9 RY203 Power High Relay MWO Control Relay Power High 9 RY204 Power Low Relay
13. MWO Control Relay Power Low 10 RY205 NightRelay Lamp Control Relay 11 RY206 Bright Rela Lamp Control Rela 12 RY207 Louver Relay LouverControlRelay 13 RY209 Vent High Relay Vent Control Relay Vent high This Document can not be used without Samsung s authorization 0 D i O x e DI O af d 6 1 PCB Diagrams D106 12V 5V ST101 UF4007 ST SM3GV C106 470uF PTC101 al POWER SUPPLY L102 5V 24V M SC D101 py 1N4007 m O SU BOUE 1 d J D102 1N4007 c407 C108 LZ A70uF 11 220uF ZNR101 i 10D471 c109 O D108 A7uF 24V 7 VFD S1 lt NP 4 23 2 EN Ke M EE e F1 F2 lt vrp s2 VFD S3 lt _ CG NP 2 21 Ss Ee KE E SES ZD101 E VFD S5 UZ5 1BSB pe E TTT INTERRUPT Co o Ee WEE oie a Kee rT O E 8 E pe F E A a JA lin I egg d dq EM dug EE KEE TIIIIIIITI fede WE O EE P a Wee 9 9 9 199 9 7 lt vFDp s12 VFD S13 7 um ILLLLELEDL TT LA ent 1 Ee Md TIIIIIITII 7 ka SEN KE ESE A 1 O id Wee Sree he BZ LL lt vFD S16 VFD G1 Qi Kc E WW E CH RAN ivan a O T 7 EE ac Eva aik aa PANA NA NA O NA AA NA NAN E q oo Gees KSC TIIIITIIII i TCO r VFD G6 oF ida EIE TI 99 9 7 DOOR _ gt VFD G4 VFD G7 gt Q VFD G5 ER 12V 5V 5V 12V P R H vFD G6 P R L VFD G7 R402 2K a LR BZ CN R lt _
14. Nc SE Wee SS SEN H Ze EE We IT dida PAL lt vFD s3 VFD S4 lt NP 1 20 zum M rT it a a 1 INTERRUPT rf 1111 1 777777777 Too pe We rT NA O AAN 8 Sg E TIIIIITIT TT es Mein LLL T T LT LT L o De oe We TF TELE a palais KEE TIIIIIIII A sv d jik TTT 5 Ee pan Eo Mon ILLI A Yi DA px ILLI O A R O Wee OlLLLLLLL BZ LL lt _ VFD S16 VFD 61 gt N EN s X W S R 5 Wa IIIIIITIT H 7 NS 62 8 Ee W mk TT S 7 on SE Weg lLLLLLLEL bas OE dido iiis i e noon F gt VFD G4 VFD G7 D gt 0 9 gt VFD G5 E 12V 5V 5V 12V P R H VFD G6 P R L lt VFD G7 R402 2K a IR N BZ CN R lt vs R403 20 LO aK NG akin T DOOR LV R HIGH R lt _ lt ILVv IN2 TR401 M R R404 C402 R401 C401 KRC246M Es 470 100nF 10K 100nF VENT lt LOW R lt _ TR503 TR504 O KRC246M KRC246M KRC246M lt KEY 7 O E lt _IKEY 6 O lt IKEY 5 Boch Ladder 1 gt ele A Y 71N4148M Y 71N4148M Y 7 RK d BE Ladder 2 gt lt _ KEY 3 CN401 y D201 INT SMW250 05V_WHT E 1N4148M gt lt kEY 2 l lt Vm lt KEY 1 CN201 A POWER L BZ S C113 SMW250 09AV RED BS E 4nF O D202 O IN 1N4148M CN601 O lt POWER L lt 125164 O RY202 POWER POWER 9 O G5T 1A 12VDC S INRUSH lt TR201 TR202 TR203 O A ere KRC246M KRC246M KRC246M im 1 2 3 4 5 OPTION SS SS SS H7 A i L L L R S emi mi ER E Q RY205 12V INRUSH POS KEY 1
15. PRECAUTION During replacement be certain R F anode gasket is in place around anode stub PERFORM MICROWAVE LEAKAGE TEST 3 Disassembly and Reassembly 3 4 Replacement of Door Assembly Disassembly Photo Explaination Removal of IN JM 1 Open the Assembly Door by degree 90 Door Assembly 1 4 JHUA 2 Seperate lifting Assembly Door from Set is T e 2 Insert flat screwdriver into the gap between Door Removal of s A and Door C to remove Door C Door C AS Becareful when handling Door C because it is CC fragile Removal of Key Door amp Spring 3 Detach the spring and key door from Door 3 Disassembly and Reassembly 3 4 Replacement of Door Assembly Removal of occ TE 4 Remove 2 screws then handle is detached from Handle r QW b m Door A 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 nsertion depth of the thin metal plate should be 0 5mm or less Removal of Door E A PRECAUTION PERFORM MICROWAVE LEAKAGE TEST 3 Disassembly and Reassembly 3 5 Replacement of Fuse The fuse is located on the noise filter Disconnect power and remove grilleand Assembly Control Box Replace the fuse When 20A fuse blows out by the operation of interlock monitor switch failure replace the primary interlock switch secondary interlock switch door sen
16. R with Stainless Steel it has professional look and the design matches great with other kitchen appliances so that it provides harmonious kitchen interior and finally completes total kitchen solution With 400CFM ventilation power New OTR can keep the comfortable cooking condition by absorbing smoke and odor from cook top Moreover it provides the silent condition that is equivalent noise Turbo vent level to other OTR with lower ventilation power Professional Design The Strongest power without additional noise That s the benefit you can feel from New OTR With the 1 8 cu ft capacity it offers enough space to cook The big capacity combined with 1 100 watts of output achieves superior cooking results Big Interior capacity for convenience Don t worry about failure of your cooking New OTR s sensor technology offers the best dish Only thing you need to do is just select the cooking menu and then you Will be satisfied with the cooking results by sensor cook Sensor cook With more informative VFD display the OTR helps you use all the function it has with ease e VED display 2 Specifications 2 2 Accessory Item Description TRAY COOKING ASSY GUIDE ROLLER ASSY HOOD DAMPER ASSY HARD WARE FILTER AIR FILTER CHARCOAL RACK WIRE Code No DE74 20002A DE97 00368A DE92 90242D DE92 90505E DE63 00196A DE63 00367D DE75 00036B 2 Specifications 2 3 Tab
17. e Numbering Rule 1 ERROR CODE NUMBERING RULE is applied to a microwave oven and an oven CMO OTR Grill Convection Commercial etc 2 All sensors and devices have their own number ex Gas Sensor 1 Temp Sensor 2 Of each device No 1 and No 2 refer to Open Error not sensed and Short Error respectively 4 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 SS DEVICE ERROR CASE 0 Others 1 Open 1 Gas Sensor 2 Short 2 Temp Sensor e 3 Weight Sensor e 4 Easy PH Sensor e 5 EEPROM 4 2 Error Code List Error Code Others E 0X Letter Solution Page Key Short Error 10 seconds Turn off set and restart 21 Page d Troubleshooting 4 2 1 Key Short Error SE is displayed YES Is the key not recognized at all NO Is the key recognized intermittently Is a specific key not recognized NO The membrane S W Error Replace the Control Panel After Power gt On does the symptom continue Replace the PCB Perform the operation again and check if it is working properly d Troubleshooting A 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
18. en MICROWAVE OVEN BASIC SMH9187W MODEL SMH9187B MODEL CODE SMH9187B XAA SERVICE Manual EHE MICROWAVE OVEN CONTENTS Precaution Product Specification Disassembly and Reassembly Troubleshooting Exploded Views and Part List PCB Diagrams Wiring Diagrams PT SS SS YS Schematic Diagrams Refer to the service manual in the GSPN see rear cover for the more information e Contents PECAR ados R a 3 salen EEGEN deeg so eee 4 are do union ao Et dee ed Oe oe eae ee ee 4 1 2 Special High Voltage Precautions 0 rn 5 o leo AAA A nn o deeg OR an 6 G Jee e AMP UU IS 6 A EE 7 2 5 EE de e EEN e Sees eee tai Boda ta SR 8 J Disassembly and RE e UE 9 3 1 Disassembly of Assembly Grille and Panel Outer ao 9 3 2 Replacement of High Voltage Transformer and HVC and Base bottom o oo o 11 3 3 Replacement of Magnetron hrs 13 3 4 Replacement of Door Assembly 0 0 0 0 ee rh 14 3 5 Replacement of FUSe ee eee eee aa nee teens 16 3 6 Replacement of Drive Motor 16 3 7 Replacement of stirrer moor ee eee rn 17 9 0 Removal HERE ess viana a re i et ee TTE 18 3 9 Replacement of Control Circuit Board rn 19 3 10 Replacement of Cooktop lamp RII RR n n 20 3 11 Replacement of Oven oh 21 A Troubleshooting EEN 22 4 1 Error Code Numbering Rule 22 iz mt 2Br P 22 4 3 Electrical Malfunction RR RIRIRRRRRIRRRRRIRR G4
19. et openings through which people particularly children might insert objects and contact dangerous voltages Examples Lamp hole ventilation slots 9 Inform the manufacturer of any oven foundto have emission in excess of 5 mW cm2 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 12 If the fuse is blown by the Interlock Monitor Switch Replace all of the following at the same time Primary door sensing switch and power relay as well as the Interlock Monitor Switch The correct adjustment of these switches is described elsewhere in this manual Make sure that the fuse has the correct rating for the particular model being repaired 13 14 15 16 18 19 Design Alteration Warning Use exact replacement parts only i e only those that are specified in thedrawings 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 v
20. gh Check high voltage component according to oscillation voltage circuit especially magnetron component test procedure and replace if it is filament circuit NOTE defective Defective high voltage components nA Transformer H V Capacitor H V Diode H V Fuse Magnetron Open or loose wiring of power relay Defective primary latch switch Defective power relay or Ass y PCB Replace PCB main CORRECTIONS Open or loose wiring of secondary Adjust door and interlock switches Oven can program interlock switch but timer does not start Off alignment of primary interlock Defective secondary interlock S W Microwave output is low Oven takes longer time to cook food CAUSE Decrease in power source voltage Consult electrician Microwave output is low Open or loose wiring of magnetron filament circuit Intermittent oscillation Aging of magnetron Fan motor turns on when plugged in CORRECTIONS Fan motor turns Consult electrician on when plugged in Oven does not S operate and return to Defective Ass y PCB Replace PCB main the plugged in mode d Troubleshooting Loud buzzing noise can be heard Loose fan and fan motor Tighten screws of fan motor Loud buzzing noise can be heard Loose screws on H V Transformer Tighten screws of H V Transformer Shorted H V Diode Replace H V Diode Turntable motor does not rotate 0 AA SULLO DES Open or loose wiring of Replace turntable mot
21. hat circuit breaker can operate 1 Precaution 1 2 Special High Voltage Precautions 1 High Voltage Warning Do not attempt to measure any of H V Capacitor the high voltages this includes the filament voltage of the magnetron High voltage is present during any cook cycle Before touching any components or wiring always 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 negative terminal of the high voltage capacitor to 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 components H V Diode A PRECAUTION There exists HIGH VOLTAGE ELECTRICITY with high current capabilities in the circuits of the HIGH VOLTAGE TRANSFORMER secondary and filament 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 A PRECAUTION Servicemen should remove their watches whenever working close to or replacing the magnetron A PRECAUTION Never touch any circuit wiring with your hand nor with uninsulated tool during operation 2 Specifications 2 1 Features Product Features Samsung New OT
22. le of Specifications Basic Model New Model SMH9187W XAA SMH9187B XAA Oven Cavity 1 8 1 8 Controls 10 power levels including defrost 10 power levels including defrost Timer 99 minutes 99seconds 99 minutes 99seconds Power Source 120VAC 60Hz 120VAC 60Hz Power consumption 1650 Watts 1650 Watts Power Output 1100 Watts 1100 Watts Oven Cavity 207 8 X 931 32 X 449 16 207 8 X 931 32 X 449 16 Outside lios 297 8 x 1612 x 1515 32 297 8 x 1612 x 1515 32 Shipping W x H x D inches 333 8 x 4915 16 X 4913 32 333 8 x 4915 16 y 4913 32 Net Gross Weight 51 6Kg 62 7lbs 51 6Kg 62 7lbs Export Zone USA USA 3 Disassembly and Reassembly 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 a RS Disassembly of Assembly Grille and Panel O Explaination Photo Explaination Disconnect oven power Remove Grille Grille 1 Remove 2 screws 2 Slide the Grille to the left then pull it straght out 1 Disconnect oven power 2 Remove Grille 3 Remove Screw 7 Panel Outer 4 Remove Screw 4 3 Disassembly and Reassembly 5 Remove Screw 4 6 Remove Screw 2 Panel Outer Remove Screw 2 E SEH E el E re 5 Explaination 8 Remove Panel Outer 3 Disassembly and Reassembly
23. lt 7 16 O G5T 1A 12VDC 4 a TIME P R H 7 OPTION Es D204 so D211 C ie COOK1 2 6 D214 R60 2K E 1N4148M KEY 2 7 l 15 D210 RY206 NIGHT iag 5V TIMED POWER OPTION CN202 114 G5T 1A 12VDC O Ie TA Kure e AT C201 KEY 3 lt SORA A 2K 14 A 100nF O ze 6 r as Seren WHT DELAYED TIMER OPTION TR205 PE AM PM CLOCK REMINDER O RY207 KRC246M START ON OFF 4 O 5T 1A 12VD C KEY 4 lt R604 2K 13 E PA VT C D206 R201 VENT LIGHT GT NMM4148 100 l TABLE CLEAR OPTION O lt C202 hilo oft bright oorr HELP BEE m L1 1 LOUVER 10uF R605 2K night off OD RY208 VT HIGH KEY 5 lt 7 12 G5T 1A 12VDC E LOUVER CIRCUIT TIMED TIMED ADD OPTION START T N D207 BEVERAGE POPCORN 30SEC 2 MM4148 VT HIGH R606 2K LOUVER KEY 6 lt 11 RY201 T TABLE VT LOW OPTION G5T 1A 12VDC m NIGHT NE D208 BRIGHT KEY 7 lt TE NMMA 148 Q0 c lt T TABLE 5V 5V O RY209 MAIN G5T 1A 12VDC TR210 R301 R302 KRC246M KRC246M KRC246M KRC246M KRC246M 26 1K 19 1K uff LV R HIGH R eher 1C301 O lt 1A758358 C VT LOW 5 22K AR601 D ZD301 D UZ5 6BSB LOW R O L202 C L1 1 72uH 5V CNR 3 CB R Y E lt VENT TT R PT201 R202 TR241 CN301 d TLP 560J 470 KRA226 AT SMW250 04V_RED 5 SE GAS SENSOR CIRCUIT R205 0 19 L O 470K e lw Ee bag 3 3K 0 E G Be e Q 2 C d E T Y co 8 1 Schematic Diagrams This Document can not be used w gt
24. oid the manufacturer s warranty Always unplug the unit s AC power cord from the AC power source before attempting to remove or reinstall any component or assembly Never defeat any of the B 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 components 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 Always connect a test instrument s ground lead to the instrument chassis ground before connecting the positive lead always remove the instrument s ground lead last 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 Components that are critical for safety are indicated in the circuit diagram by shading or A 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 characteristics as the original might create shock fire or other hazards NOTE Connect the oven to a 20A When connecting the oven to a 15A make sure t
25. or Turntable motor does turntable motor not rotate Defective turntable motor CORRECTIONS Open or loose wiring of primary Adjust door and latch switches Oven stops operation interlock switch during cookin R Operation of thermal cutout Magnetron Sparks CORRECTIONS Metallic ware or cooking dishes Inform the customer Do not use any type of touching on the oven wall cookware with metallic trimming Ceramic ware trimmed with gold or silver powder also causes sparks Uneven cooking CAUSE CORRECTIONS Uneven cooking Uneven intensity of microwave due Wrap thinner parts of the food with aluminum foil to its characteristics se 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 from the o c CORRECTIONS turntable motor when Noise may result from the motor Replace turntable motor it starts to operate H ed D 0 C L o A D G 0 E gt D d e 9 G gt n Te 5 1 Exploded Views o N SI 9 7 x Ee er AME NALNO LS s NUN ESG B002 Boos asss asss S oocooc m ZGasnnsss oocoocoo S ooooooooo 0 Q ss9999999995 3999990000000 999909909999909 699999999999999 TINITIIS 0000 0 0 9 AAMAR ARMA o 0 0 0 0 0 0 0 0 0 0000000000 0 0 0 0 0 0 0 0 0000 eg Bala 0 0 0 0 0 0 V 0 0 0 0 leg XS Kach 0 0 0 08 y AA
26. round any static electric charge in Removal of your body and never touch the control circuit Control Box Assembly Remove a screw securing the control box assembly Disconnect the connectors from the control circuit board Pull the lever end of the plastic fastener and remove the Flexible Printed Circuit FPC of membrane panel Remove screws 3 securing the control circuit board Lift up the control circuit board from the Ass y control box When reconnecting the FPC connector make sure that the holes on the connector are properly engaged with the hooks on the Plastic Fastener Removal of P C B Assembly 3 Disassembly and Reassembly 3 10 Replacement of Cooktop lamp When replacing the night light make sure that you are wearing gloves to avoid injury from the heat of the bulb Explaination Photo Explaination Unplug the oven or turn off the power at the main power Remove the bulb cover and mounting SCrews Replace the bulb with a 40 watt appliance bulb Cooktop Lamp Replace the bulb cover and mounting Screws Turn the power back on at the main power supply 3 Disassembly and Reassembly 3 11 Replacement of Oven Light Explaination Photo Explaination Disconnect Oven power Remove the Grille Oven Light Seed A ON Wi Remove the bracket Duct upper by E o BS C remove 1 screw Replace the bulb with a 40 watt appliance bulb d Troubleshooting 4 1 Error Cod
27. sing switch interlock monitor switch and power relay When the above four switches operate properly check if any other part such as the control circuit board blower motor or high voltage transformer is defective Disconnect power and remove Base bottom screws 5 Remove Base bottom and disconnect the turntable motor drive Remove turntable motor screws 1 and pull the turntable motor out When replacing the drive motor be sure to remount it in the correct position with the coupler Connect all the leads to the drive motor 3 Disassembly and Reassembly 3 7 Replacement of stirrer motor Explaination Photo Explaination Disconnect power and remove Grille screws 3 Remove the bracket duct upper Stirrer Motor Disconnect the stirrer motor wire Remove stirrer motor screws 1 and after turn to arrow direction pull the stirrer motor 3 Disassembly and Reassembly 3 8 Removal of stirrer The stirrer is motor driver and located on the upper side of the cavity The oven uses a top feed wave guide The stirrer is located in the wave guide and the motor is located on the wave guide Stirrer Disconnect power and open the door Remove the clip and turn the stirrer cover left Remove stirrer cover and the stirrer will come with it 3 Disassembly and Reassembly 3 9 Replacement of Control Circuit Board Explaination Disconnect power and remove Grille Be sure to g
28. zzeseaert 1 Pors raas BRACKET OUCTUPPER sumwsstcomsmn Jil a ms eremm emos H w p LI EE e o U m o o O o co 2 gt O I SZ O U lt O U C C 2 Al Dv 9 NS CEET TH CH O CO U m O PB O N CH O N gt 0 ER EZ mm m O lt lt gt 0 O T Sege P032 DE92 90508A ASSY HOLDER NUT Tm 1 SA fe 5 Exploded Views and Parts List 5 2 Main Parts List Continued S N A SERVICE NOT AVAILABLE No Code No Description Specification Q ty SAISNA Remark e pesronmesa ASSVDUCTURPER sMMrITSSENSORsMALOGEN aj a ml TT Poso peores COVERFRONT Immens ajaa EE A fif ad asa CR L EE EE EE Ao o prz een UN Lesen fef a h eler Lesen H EN ml A A ue louer Horoera sowrwzmerzagOm a sa us louer wonkmtue aasan asos 3 Lu peso BRACKETSOTTOMLANP Tanna na a SA us peseom a GLASS COOKTOP LAMP Tamra Teue sos S ls wes peores Joan SwwnsaLMESHT2ONWOEM 2 SA Fora pessaotara COVERGLASS COOKTOP swwussecomsws a a waz pewensr ASSYWIRE HARNESS A swwwrmwmnzg HH ma e 5 Exploded Views and Parts List 5 3 Door Parts List S N A SERVICE NOT AVAILABLE No Code No Description Specification Q ty SA SNA Remark Posa Ena
Download Pdf Manuals
Related Search