Samsung SMH7187STG Service Manual
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Samsung SMH7187STG 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:
SMH7185STG
MODEL:
SMH7187STG
MODEL CODE: SMH7187STG/XAA
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 SMH7187STG

  • Page 1 BASIC: SMH7185STG MODEL: SMH7187STG MODEL CODE: SMH7187STG/XAA 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 ( All repairs should be done in accordance with the 13.

  • Page 5: Special High Voltage Precautions

    1. Precaution 1- Special High Voltage Precautions 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 -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 - Accessory Item Description Code No. Q’ty TRAY COOKING DE74-20002C ASSY-GUIDE ROLLER DE97-00368A ASSY-HOOD DAMPER DE92-90242D ASSY-HARD WARE DE92-90505E FILTER AIR DE63-00196A FILTER CHARCOAL DE63-00367D RACK-WIRE DE75-00036A...

  • Page 8: Table Of Specifications

    2. Specifications 2-3 Table of Specifications Basic Model New Model Items SMH7185STG SMH7187STG Cavity Size (cu .ft .) 1 .8 1 .8 Power 120V / 60Hz Power Source Output Power (Watts) 1100 1100 Power Consumption (Watts/Amp) 1650 1650 Characteristics Control Method Touch Touch Display...
  • Page 9 2. Specifications Basic Model New Model Items SMH7185STG SMH7187STG Turntable Distribution Stirrer + Turntable Stirrer + Turntable Turntable On/Off End Signal Sound Special Function Hood Ventilation Vent Fan CFM Vent Orientation Vertical Vertical Vent Fan Control Turbo / Hi / Low / Off...

  • Page 10: 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 ( 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 11 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 12: Replacement Of High Voltage Transformer And Hvc And Base Bottom

    3. Disassembly and Reassembly 3- Replacement of High Voltage Transformer and HVC and Base bottom Parts Explaination Photo Explaination 1. Disconnect Oven Power . . Remove Panel Outer . 3. Discharge The High Voltage Capacitor . ATTENTION : When discharge must become ground terminal of HVC and metal of around .
  • Page 13 3. Disassembly and Reassembly 3- Replacement of High Voltage Transformer and HVC and Base bottom Parts Explaination Photo Explaination 4. Disconnect the Lead Wire . HV Trans 5. Remove screw .(3) 6. Take out the HV Trans .

  • Page 14: 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) . Disconnect all lead wires from the magnetron .

  • Page 15: Replacement Of Door Assembly

    3. Disassembly and Reassembly 3-4 Replacement of Door Assembly Parts Disassembly Photo Explaination Removal of Open the Assembly Door by degree 90º Door Assembly . Seperate lifting Assembly Door from Set . 90º Insert flat screwdriver into the gap between Door Removal of “A”...
  • Page 16 3. Disassembly and Reassembly 3-4 Replacement of Door Assembly Removal of Remove 2 screws, then handle is detached from Handle Door “A” . Following the procedure as shown in the figure, insert and bend a thin metal plate between Door Removal of “E”...

  • Page 17: Replacement Of Fuse

    3. Disassembly and Reassembly 3-5 Replacement of Fuse Parts Explaination Photo Explaination The fuse is located on the noise filter. Disconnect power and remove grilleand Assembly Control Box . . 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 18: Replacement Of Stirrer Motor

    3. Disassembly and Reassembly 3-7 Replacement of stirrer motor Parts Explaination Photo Explaination Disconnect power and remove Grille screws(3) . . 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 19: 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 20: Replacement Of Control Circuit Board

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

  • Page 21: 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 Unplug the oven or turn off the power at the main power .

  • Page 22: Replacement Of Oven Light

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

  • Page 23: 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 .) . All sensors and devices have their own number . ex) Gas Sensor = 1, Temp . Sensor = 2, . . . 3.
  • Page 24 4. Troubleshooting 4--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 25: Electrical Malfunction

    4. Troubleshooting PRECAUTION 1. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE . . BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT . 3. 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 .
  • Page 26 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 27 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 28: Exploded Views

    5. Exploded Views and Parts List 5-1 Exploded Views P007 P012 T017 P013 P090 P014 T001 P032 M060 W022 P088 P087 M015 P089 P091 M219 C089 P034 P039 P178 P179 M024 M001 P097 P113 P122 P030 P098 M036 P112 M050 H032 U003 W023...

  • Page 29: Exploded Views And Parts List

    P090 DE60-30022A NUT-TOGGLE SBC1,ZPC2,WHT,-,-,-,-,-,- P091 DE63-10011A GROMMET -,MS,-,-,-,DACB-16,-,-,- SNA - P032 DE92-90508A ASSY-HOLDER NUT OTR6,-,-,-,-,- M067 DE94-01618A ASSY-GRILLE 120V/60HZ,SMH7187STG,STS,AUT D060 6107-001175 SPRING-ES HSWR,BLUING,PI0 .95,D8 .5,L48 .4 SNA - P099 DE61-00128A HINGE-GRILLE(R) JVM-1860,SECC,T0 .8,-,-,- P100 DE61-00129A HINGE-GRILLE(L) JVM-1860,SECC,T0 .8,-,-,- P104 DE61-00177A HINGE-GRILLE(M) JVM-3660,SECC,T1 .6,-,-,-...
  • Page 30 5. Exploded Views and Parts List 5- Main Parts List (S.N.A : SERVICE NOT AVAILABLE) Level Code No. Description Specification Q’ty Remark M041 DE91-70063D ASSY-HVD HV03-12,MWO-GE,RED M041 0402-001554 HVDIODE-RECTIFIER HV03-12T01,12000V,0 .4A B018 DE96-00414A ASSY BODY LATCH RVM-1625BJ,- B002 3405-001033 SWITCH-MICRO 125/250VAC 16A,200GF,SPSTNC B001 3405-001034...

  • Page 31: Door Parts List

    D020 DE94-01625C ASSY-HANDLE 120V/60HZ,NEW WAVE 2,STS,AL C089 C082 D073 DE63-00445A EARTH-DOOR NEW WAVE 2,STS430,T0 .15,-,-,- M011 D127 DE64-01802A HANDLE-TUBULAR SMH7187STG,AL,-,-,-,-,-,- C074 D085 DE67-00222C CAP-HANDLE NEW WAVE 2,PC,-,-,-,STS SPRAY C073 D037 DE94-01626A ASSY DOOR-A SMH7185STG/XAA,STS,NEW WAVE D016 DE64-01769A DOOR-SUB NEW WAVE 2,PC,-,-,-,-,BLACK,-...

  • Page 32: Control Parts List

    C082 M011 C074 C073 C001 (S.N.A : SERVICE NOT AVAILABLE) Level Code No. Description Specification Q’ty SA/SNA Remark C082 DE94-01613D ASSY-CONTROL BOX -,SMH7187STG/XAA,STS,12 C001 DE94-01614C ASSY-CONTROL PANEL -,SMH7185STG/XAA,STS, C004 DE34-00205F SWITCH MEMBRANE SMH7187STG/XAA,-,-,-,-,1 C009 DE64-00766D WINDOW-DISPLAY SMH7185,SAN(CR-5381),-,W3 C005 DE64-01766A CONTROL-PANEL...

  • Page 33: Standard Parts List

    5. Exploded Views and Parts List 5-5 Standard Parts List (S.N.A : SERVICE NOT AVAILABLE) Level Code No. Description Specification Q’ty Remark 6002-000643 SCREW-TAPPING TH,+,2S,M4,L10,ZPC(YEL),SW CVT FRONT+B .PLATE 6002-001173 SCREW-TAPPING FH,+,2S,M4,L12,ZPC(BLK),MS O/PANEL,GRILLE 6003-001568 SCREW-TAPTITE FH,TORX,-,B-TITE,M4,L14,NI BODY LATCH 6006-001170 SCREW-ASSY TAPP WS,TH,+,M4,L10,ZPC(YEL) P .CORD,N .FILTER E .&...

  • Page 34: Pcb Diagrams

    6. PCB Diagrams 6. PCB Diagrams 6-1 PCB Diagrams (This Document can not be used without Samsung’s authorization)

  • Page 35: Wiring Diagrams

    7. Wiring Diagrams 7-1 Wiring Diagrams (This Document can not be used without Samsung’s authorization)
  • Page 36 7. Wiring Diagrams 7-1 Wiring Diagrams (This Document can not be used without Samsung’s authorization)

  • Page 37: Schematic Diagrams

    8. Schematic Diagrams 8-1 Schematic Diagrams (This Document can not be used without Samsung’s authorization) BZ501 CBE2220BA IC101 TMP86CM72FG-CHUN DSP101 SVM-07SS25...
  • Page 38 .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 . July . 2007 Printed in Korea Code No . : DE68-04537A...

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