Samsung SMH9207ST Service Manual
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Samsung SMH9207ST Service Manual

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See also: User Manual
Refer to the service manual in the GSPN(see rear cover) for the more information.
BASIC:
SMH7185BG
MODEL:
SMH9207ST
MODEL CODE: SMH9207ST/XAC
1. Precaution
2. Product Specification
3. Disassembly and Reassembly
4. Troubleshooting
5. Exploded Views and Part List
6. PCB Diagrams
7. Wiring Diagrams
8. Schematic Diagrams

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Summary of Contents for Samsung SMH9207ST

  • Page 1 BASIC: SMH7185BG MODEL: SMH9207ST MODEL CODE: SMH9207ST/XAC 1. Precaution 2. Product Specification 3. Disassembly and Reassembly 4. Troubleshooting 5. Exploded Views and Part List 6. PCB Diagrams 7. Wiring Diagrams 8. Schematic Diagrams Refer to the service manual in the GSPN(see rear cover) for the more information.

  • Page 2: Table Of Contents

    • Contents 1. Precaution ................3 1-1 Safety precautions .

  • Page 3: Precaution

    1. Precaution...

  • Page 4: Safety Precautions

    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.

  • Page 5: Special High Voltage Precautions

    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)

  • Page 6: Specifications

    2. Specifications 2-1 Features Product Features Samsung New OTR with Stainless Steel, it has professional look and the design matches great with other kitchen appliances, so that • Professional Design 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.

  • Page 7: Accessory

    2. Specifications 2-2 Accessory Item Description Code No. Q’ty TRAY COOKING DE74-20002A ASSY-GUIDE ROLLER DE97-00637A ASSY-HOOD DAMPER DE92-90242D ASSY-HARD WARE DE92-90505E FILTER AIR DE63-30011A FILTER CHARCOAL DE63-00367D RACK-WIRE DE75-00036B...

  • Page 8: Table Of Specifications

    2. Specifications 2-3 Table of Specifications Basic Model New Model Items SMH9207ST/XAA SMH9207ST/XAC Oven Cavity 2 .0 2 .0 Controls 10 power levels, including defrost 10 power levels, including defrost Timer 99 minutes, 99seconds 99 minutes, 99seconds Power Source 120VAC, 60Hz 120VAC, 60Hz 1650 Watts...

  • Page 9: Disassembly And Reassembly

    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 . 3-1 Disassembly of Assembly Grille and Panel Outer Parts Explaination Photo...
  • Page 10 3. Disassembly and Reassembly 3-1 Disassembly of Assembly Grille and Panel Outer Parts Explaination Photo Explaination 5. Remove Screw .(4) 6. Remove Screw .(2) Panel Outer 7. Remove Screw .(2) Explaination Photo Explaination 8. Remove Panel Outer .

  • Page 11: Replacement Of High Voltage Transformer And Hvc And Base Bottom

    3. Disassembly and Reassembly 3-2 Replacement of High Voltage Transformer and HVC and Base bottom Parts Explaination Photo Explaination 1. Disconnect Oven Power . 2. Remove Panel Outer . 3. Discharge The High Voltage Capacitor . ATTENTION : When discharge must become ground terminal of HVC and metal of around .
  • Page 12 3. Disassembly and Reassembly 3-2 Replacement of High Voltage Transformer and HVC and Base bottom Parts Explaination Photo Explaination 4. Disconnect the Lead Wire . HV Trans 5. Remove screw .(4) 6. Take out the HV Trans .

  • Page 13: Replacement Of Magnetron

    3. Disassembly and Reassembly 3-3 Replacement of Magnetron Parts Explaination Photo Explaination 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 .

  • Page 14: Replacement Of Door Assembly

    3. Disassembly and Reassembly 3-4 Replacement of Door Assembly Parts Disassembly Photo Explaination 1. Disconnect the lead wire . Removal of 2. Open the Assembly Door by degree 90º Door Assembly 3. Seperate lifting Assembly Door from Set . 4. Insert flat screwdriver into the gap between Door Removal of “A”...
  • Page 15 3. Disassembly and Reassembly 3-4 Replacement of Door Assembly Removal of 4. Remove 2 screws, then handle is detached from Handle Door “A” . 5. Following the procedure as shown in the figure, insert and bend a thin metal plate between Door Removal of “E”...

  • Page 16: Replacement Of Fuse

    3. Disassembly and Reassembly 3-5 Replacement of Fuse Parts Explaination Photo Explaination The fuse is located on the noise filter. 1. Disconnect power and remove grilleand Assembly Control Box . 2. Replace the fuse . Fuse 3. When 20A fuse blows out by the operation of interlock monitor switch failure, replace Fuse the primary interlock switch, secondary...

  • Page 17: Replacement Of Stirrer Motor

    3. Disassembly and Reassembly 3-7 Replacement of stirrer motor Parts Explaination Photo Explaination 1. Disconnect power and remove Grille screws(3) . 2. Remove the bracket duct upper . Stirrer Motor 3. Disconnect the stirrer motor wire . 4. Remove stirrer motor screws(1) and after turn to arrow direction pull the stirrer motor .

  • Page 18: Removal Of Stirrer

    3. Disassembly and Reassembly 3-8 Removal of stirrer Parts Explaination Photo Explaination 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 .

  • Page 19: Replacement Of Control Circuit Board (Power)

    3. Disassembly and Reassembly 3-9-1 Replacement of Control Circuit Board (Power) Parts Explaination Photo Explaination 1. Disconnect power and remove Grille . 2. Be sure to ground any static electric charge in your body and never touch the control circuit . Removal of Control Box 3.

  • Page 20: Replacement Of Cooktop Lamp

    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 . Parts Explaination Photo Explaination 1. Unplug the oven or turn off the power at the main power .

  • Page 21: Replacement Of Oven Light

    3. Disassembly and Reassembly 3-11 Replacement of Oven Light Parts Explaination Photo Explaination 1. Disconnect Oven power . 2. Remove the Grille Oven Light 3. Remove the bracket Duct upper by remove 1 screw . 4. Replace the bulb with a 40 watt appliance bulb .

  • Page 22: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4-1 Error Code 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, . . . 3.
  • Page 23 4. Troubleshooting 4-2-1 Key Short Error “- SE -” is displayed. Is the key not recognized at all? Is the key recognized intermittently? Is a specific key not recognized? The membrane is defective. S/W Error Replace the Control Panel. After Power > On, does the symptom continue? Replace the PCB.

  • Page 24: Electrical Malfunction

    4. Troubleshooting PRECAUTION 1. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE . 2. BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT . 3. DISCHARGE THE HIGH VOLTAGE CAPACITOR . 4. 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 .
  • Page 25 Oven does not accept key input Open or loose connection of membrane key pad to Ass’y PCB 4. Troubleshooting Shorted or open membrane panel Replace PCB main. Defective Ass’y PCB Timer starts countdown but no microwave oscillation . (No heat while oven lamp and fan motor turn on.) Off-alignment of latch switches Adjust door and latch switches.
  • Page 26 Consult electrician. Loose wiring of door sensing switch on when plugged in (Intermittent oscillation) Aging of magnetron Fan motor turns Consult electrician. Loose wiring of door sensing switch on when plugged in Aging of magnetron Fan motor turns Consult electrician. Loose wiring of door sensing switch on when plugged in 4.

  • Page 27: Exploded Views And Parts List

    5. Exploded Views and Parts List 5-1 Exploded Views M060 P007 U008 P012 M061 G361 P034 T001 P036 M015 P039 P024 P025 P124 M036 T030 M001 M444 M024 P105 C309 H093 P086 M102 M067 M040 P001 H024 P226 M068 P106 M528 M039 M527 M017...

  • Page 28: Main Parts List

    5. Exploded Views and Parts List 5-2 Main Parts List (S.N.A : SERVICE NOT AVAILABLE) Code No. Description Specification Q’ty SA/SNA Remark B013 DE66-90106B LEVER SWITCH-LOWER OTR6,PP,T1 .4,-,-,-,-, B022 DE96-00414A ASSY BODY LATCH RVM-1625BJ,- B047 3405-001033 SWITCH-MICRO 125/250VAC,16A,200gf,SPST-N B048 3405-001034 SWITCH-MICRO 125/250VAC,16A,200gf,SPST-N B064...
  • Page 29 P226 DE64-02222A INLAY-GRILLE SMH9207,STS430,T0 .4,-,-,-,- T001 DE74-20002A TRAY-COOKING -,GLASS,T6,NEG,PI360,1 .2CUF T030 DE75-00036B RACK-WIRE SMH7175,SNCR,W315,D4 U001 DE94-02136B ASSY BASE BOTTOM SMH9207ST/XAC,SECC,T0 .4 U005 DE67-40063A GLASS-COOK TOP LAMP -,GLASS,T3 .2,W59,L15 U008 DE63-30011A FILTER-AIR -,AL, U057 DE63-00100B COVER-COOKTOP LAMP OTR-9,SECC,T0 .4,-,-,- U060 DE61-01179B BASE-BOTTOM SMH9207ST/XAA,SECC,T0 .4,BLAC...

  • Page 30: Door Parts List

    D073 W005 D195 D063 D077 D064 (S.N.A : SERVICE NOT AVAILABLE) Code No. Description Specification Q’ty SA/SNA Remark C003 DE92-02135A ASSY PCB-MAIN RAS-ML9M-00,SMH9207ST/XAA, C004 DE34-00333A SWITCH MEMBRANE SMH9207ST/XAA,PC,BLACK C009 DE64-02268A WINDOW-DISPLAY SMH9207,SAN(CR-5381),BLUE D002 DE64-02217A DOOR-A SMH9207,PC,-,-,-,-,BLK,- D003 DE64-02226A SCREEN-DOOR SMH9207,REINFORCE GLASS,T3 .2...

  • Page 31: Control Parts List

    C005 DE64-02218A CONTROL-PANEL SMH9207,PC,-,-,-,-,BLK,- C010 DE64-02219A BUTTON-SELECT SMH9207,PC,-,-,BLK,- C082 DE94-02097A ASSY CONTROL BOX SMH9207,120V60HZ,STS,PC C084 DE96-00789A ASSY KEY MODULE SMH9207ST/XAA,DKM-ML9-00 C301 DE92-02136A ASSY PCB-POWER RAS-ML9P-00,SMH9207ST/XAA C302 DE01-00259A FILM-KEY MODULE SMH9207,PET,T0 .1 C303 DE63-00603A EARTH-CONTROL SMH9207,STS301,T0 .15,-,-,- P157 DE94-02099A ASSY BRACKET C/PANEL SMH9207,SECC,T0 .4...

  • Page 32: Standard Parts List

    5. Exploded Views and Parts List 5-5 Standard Parts List (S.N.A : SERVICE NOT AVAILABLE) Code No. Description Specification Q’ty SA/SNA Remark 6002-000643 SCREW-TAPPING TH,+,NO,2S,M4,L10,ZPC(WHT) 6002-001173 SCREW-TAPPING FH,+,2S,M4,L12,ZPC(BLK),MS 6003-001568 SCREW-TAPTYPE FH,TORX,B,M4,L16,NI PLT,SW 6006-001170 SCREW-TAPPING TH,+,WT,TC,M4,L10,ZPC(WHT) DE60-10045A SCREW-TAPPING PH,M3,FEFZY DE60-10051A SCREW-TAPPING PH,+,M4,L6,NI PLT,SWRCH18A DE60-10062A SCREW-TAPPING...

  • Page 33: Pcb Diagrams

    6. PCB Diagrams 6-1 PCB Diagrams (ML9M) (This Document can not be used without Samsung’s authorization)
  • Page 34 6. PCB Diagrams 6-2 PCB Diagrams (ML9M) (This Document can not be used without Samsung’s authorization)
  • Page 35 6. PCB Diagrams 6. PCB Diagrams 6-1 PCB Diagrams (KEY-ML9) (This Document can not be used without Samsung’s authorization)
  • Page 36 6. PCB Diagrams 6. PCB Diagrams 6-2 PCB Diagrams (KEY-ML9) (This Document can not be used without Samsung’s authorization) C N 01 1) + 5V 2) K E Y 7-A D 3) G N D...
  • Page 37 6. PCB Diagrams 6. PCB Diagrams 6-1 PCB Diagrams (ML9P) (This Document can not be used without Samsung’s authorization)
  • Page 38 6. PCB Diagrams 6. PCB Diagrams 6-2 PCB Diagrams (ML9P) (This Document can not be used without Samsung’s authorization) C N 05 1) R Y -P O W E R -L 14) -34V 2) R Y -P O W E R -H...

  • Page 39: Wiring Diagrams

    7. Wiring Diagrams 7-1 Wiring Diagrams (This Document can not be used without Samsung’s authorization)
  • Page 40 7. Wiring Diagrams 7-2 Wiring Diagrams (This Document can not be used without Samsung’s authorization)

  • Page 41: Schematic Diagrams

    8. Schematic Diagrams 8-1 Schematic Diagrams (ML9-Main) (This Document can not be used without Samsung’s authorization) BUZZER RESET C-S-O DSP1 VFD33-1802F...
  • Page 42 8. Schematic Diagrams 8. Schematic Diagrams 8-2 Schematic Diagrams (ML9-Sub) (This Document can not be used without Samsung’s authorization) CN02 CN01 SMW250-09AV_RED SMW250-07AV_RED L-IN L-IN SOURCE RY-V_DOOR CN04 SMW250-05V(RED) CN03 SMW250-04V_RED SMW250-03V_WHT BZ01 CBE2220BA BUZZER...
  • Page 43 .samsungportal .com cis .samsungportal .com Europe europe .samsungportal .com China china .samsungportal .com Asia asia .samsungportal .com Mideast & Africa mea .samsungportal .com © Samsung Electronics Co ., Ltd . March . 2010 Printed in Korea Code No . : DE68-05792A...

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