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Samsung CM1629 Service Manual

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SERVICE

MICROWAVE OVEN

SEF
MICROWAVE OVEN
CM1629
Version : 0001, 0002
Manual
CONTENTS
8. Schematic Diagrams

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Summary of Contents for Samsung CM1629

  • Page 1: Table Of Contents

    MICROWAVE OVEN CM1629 Version : 0001, 0002 SERVICE Manual 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. Schematic Diagrams 9. Wiring Diagram &...
  • Page 2 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 (c) Before turning on microwave power for operated with the door open. any service test or inspection within the (b) Make the following safety checks on all microwave generating compartments, ovens to be serviced before activating the...

  • Page 3: Precaution

    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 4: Special High Voltage Precautions

    1-2 Special High Voltage Precautions 1. High Voltage Warning Do not attempt to measure Discharge the 2 High Voltage Capacitors any of the high voltages --this includes the fila- before servicing! ment 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 5: Specifications

    2. Specifications 2-1 Table of Specifications TIMER Max. 25min POWER SOURCE 230V 50Hz, AC POWER CONSUMPTION MICROWAVE : 3,200W OUTPUT POWER 1,600W (ICE-705) OPERATING FREQUENCY 2,450MHz MAGNETRON OM75P(20)ESS COOLING METHOD VENTILATION MOTOR OUTSIDE DIMENSIONS 464(W) x 368(H) x 557(D) NET WEIGHT 32 Kg SHIPPING WEIGHT 34.5 Kg...

  • Page 6: Operating Instructions

    3. Operating Instructions 3-1 Control Panel + 20sec 1. DISPLAY 6. DEFROST SELECTOR PAD 2. PROGRAM PAD 7. DOUBLE QUANTITY PAD 3. PROGRAM LOCK PAD 8. +20sec PAD (ONE TOUCH COOK PAD) 4. NUMBER PADS (TIME, MEMORY 9. STOP/CANCEL PAD PROGRAMMING) 10.
  • Page 7 3-3 Operation Guide One-stage cooking This oven is preset at the factory for automatic operation. Make sure the oven is plugged into a properly earthed electrical outlet and ‘ON’ appears in the display window. Open the door (The oven lamp will be turned on.). Put the food into a suitable container, place it in the centre of the oven and then close the door securely (The oven lamp will go off.).
  • Page 8 3-3 Operation Guide (Continued) Multi-stage cooking 1. Select the desired power level by pressing the POWER LEVEL Selector pad or DEFROST pad. Result : The selected power level will be displayed in the display window. 2. Set the desired heating time by pressing the NUMBER pads. Result : The selected time is displayed in the display window.

  • Page 9: Using The Defrost Feature

    3-3 Operation Guide (Continued) Using the Defrost Feature NOTE : When the oven was operating for longer than 25 min under Defrosting cycle, you can NOT change the power level from Defrosting to Heating(Cooking/Reheating) mode. NOTE : The oven is designed not to work when power level is set to ‘0’ mode between the heating mode and the defrosting mode.
  • Page 10 3-3 Operation Guide (Continued) One-stage 1. Hold down PROGRAM LOCK( ) and then press PROGRAM ( ) pad. Hold together for 2 sec. * Be sure to press the pads firmly. Result : PROG indicator appears in the digital display. 2.
  • Page 11 3-3 Operation Guide (Continued) Multi-stage 1. Hold down PROGRAM LOCK( ) and then press PROGRAM( ) pad. Hold together for 2 sec. * Be sure to press the pads firmly. Result : PROG indicator appears in the digital display. 2. Press appropriate NUMBER pad for the desired memory number. Result : Selected memory program code appears below the PROGRAM indicator.

  • Page 12: How To Operate Memory Cooking

    3-3 Operation Guide How to Operate Memory Cooking After having finished memory programming, just press the NUMBER pad of the memory number you want to select. The oven will automatically start heating according to the pre-programmed cooking time and power level after a short delay (5 sec).

  • Page 13: Disassembly And Reassembly

    4. Disassembly and Reassembly 4-1 Replacement of Magnetron Remove the magnetron including the shield case, permanent magnet, choke coils and capacitor (all Duct-MGT-L of which are contained in one assembly). Nut-Flange 1. Remove the outer panel. Duct-Fan NOTE : Before servicing, make sure to discharge electric charge remaining on the high voltage capacitors or wait for more than 5 min.

  • Page 14: Replacement Of Door Assembly

    4-3 Replacement of Door Assembly 4-3-1 Removal of Door Assembly NOTE : Be sure to wear gloves when you disassemble or assemble the parts. 1. Remove hex bolts securing the upper hinge and lower hinge. Then remove the door assembly. 2.

  • Page 15: Replacement Of Drive Motor

    4-4 Replacement of Fuse and H.V.Fuse 1. Disconnect the oven from the power source. 2. Remove defective fuse from Noise filter. 3. When replacing the fuse, be sure to use an exact replacement part. If new fuse blows out again after replacement, check the primary interlock switch, door sensing switch and interlock monitor switch.
  • Page 16 4-6 Replacement of Control Box Assy and P.C.Board 4-6-1 Removal of Control Box Assembly 1. Be sure to discharge any static electric charge built up on your body and avoid touching the touch control circuitry. 2. Remove 3 screws securing the Control Box Ass’y to the oven cavity. 3.

  • Page 17: Replacement Of Lamp

    4-7 Replacement of Fan Motor 1. Remove the outer panel and back-cover. 2. Discharge the high voltage capacitor. Ventilation Motor 3. Remove all the lead wires from Magnetron and High Voltage Capacitor. 4. Remove 2 screws securing the duct fan. 5.
  • Page 18 4-10 Replacement of Air Filter 1. Pull out the spacer pins at both ends of the Air Filter. Then the locking clamps inside are released. 2. Lift the Air Filter off the post carefully. Note : Spacer pins are not detachable from the Air Filter.

  • Page 19: Alignment And Adjustments

    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.

  • Page 20: High Voltage Diode

    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).

  • Page 21: Output Power Of Magnetron

    5-8 Output Power of Magnetron CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE 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...

  • Page 22: Check For Microwave Leakage

    5-10 Check for Microwave Leakage 5-10-1 Procedure for Measurement of Microwave Energy Leakage 1. Pour 275±5cc of 20°C±5°C ( 68°CF±9°C ) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven. 2.

  • Page 23: Troubleshooting

    6. 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 LEAD WIRES 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.
  • Page 24 6-1 Electrical Malfunction(continued) SYMPTOM CAUSE CORRECTIONS Oven lamp goes off 1. Loose lead wire or open lamp filament Tighten lamp lead wire or replace 2. Misadjustment of latch switch with a new lamp 3. Defective primary latch switch Microwave output is low;. 1.
  • Page 25 6-1 Electrical Malfunction(continued) Code Cause Corrections 1. Improper input power freqency. Check if power frequency is 50Hz. 2. Defective Ass’y Main P.C.B Replace Ass’y Main P.C.B or MICOM 1. Overheating inside cavity Check if the oven was operating without load or (no load or little load aging) too little load and plug the power cord in again.

  • Page 26: Exploded Views And Parts List

    7. Exploded Views and Parts List 7-1 Exploded Views - 24 -...

  • Page 27: Main Parts List

    7-2 Main Parts List Code No. Description Specification Q’ty Remark B001 3405-001034 SWITCH-MICRO 125/250VAC,16A,200GF,SPST-N B001 3405-001055 SWITCH-MICRO 125/250VAC,16A,200GF,SPST-N B002 3405-001032 SWITCH-MICRO 125/250VAC,16A,200GF,SPDT B005 DE61-00066A SPRING-Q CM1819/1829,MSWR,PI0.8,-,-,-,-, B006 DE66-40062A LATCH-BODY -,-,-,-,-,-,- B012 DE66-90107A LEVER-SWITCH(U) PBT,CM-1819,-,-,-,-,- B013 DE66-90108A LEVER-SWITCH(L) PBT,CM-1819,-,-,-,-,- B018 DE93-20097E ASSY BODY LATCH CM1819/1829,EUROPE M001...

  • Page 28: Door Parts List

    7-3 Door Parts List D006 D008 D004 D021 D024 D022 D011 D008 D018 D007 D019 D026 Code No. Description Specification Q’ty Remark D004 DE92-50132B ASSY DOOR-E CM-1819,PP,-,-,-,- D006 DE64-40298A DOOR-C -,PP,-,-,-,-,-,- D007 DE61-70144A SPRING-KEY -,HSWR,PI1.0,-,OD6.5,L32.8,21 D008 DE61-80138A HINGE -,SHV-945EG1,KEC,T3.0,W24.5,L29.5, D011 DE64-40296A DOOR-KEY -,CR3C,-,-,-,-,-,-...

  • Page 29: Control Parts List

    -,STS430,T0.5,TC,CM-1829,-,- C022 DE71-60428B COVER-PANEL(L/L) CM1019,ABS,-,-,-,-,-,CM C023 DE71-60429B COVER-PANEL(L/R) CM1019,ABS,-,-,-,-,-,CM C033 DE39-40694A WIRE HARNESS-C 9PIN,-,-,-,-,-,-,-,-,-,-, WIRE2 C082 DE93-30442S ASSY CONTROL-BOX -,CM1629,-,COMMERCIAL 0001ver CM1629,230V50HZ,BLACK,STS,ABS, 0002ver C082 DE94-02182B ASSY CONTROL-BOX HEAVY-COMMERCIAL MWO,MEMBRANE W003 DE39-40692A WIRE HARNESS-B 11PIN,-,-,CM1819/29,-,-,- WIRE1 W007 DE39-40113B WIRE HARNESS-F 100V,50/60HZ,RE-CH1,-,-,- WIRE4 S.N.A : SERVICE NOT AVAILABLE...

  • Page 30: Standard Parts List

    7-4 Standard Parts List Code No. Description Specification Q’ty Remark DE60-20014A BOLT-FLANGE M5,L10,MSWR3,FEFZY,-,-,-,-,- 6011-001140 BOLT-STUD M4,L8,Ni PLT,BSW DE60-30015A NUT-FLANGE M5,P0.8,MSWR10,FEFZY,-,-,-,-,- DE60-10082I SCREW-A -,-,-,-,2S-4X12,FEFZY,-,-,-,- BODY LATCH DE60-10082I SCREW-A -,-,-,-,2S-4X12,FEFZY,-,-,-,- C-PANEL DE60-10082I SCREW-A -,-,-,-,2S-4X12,FEFZY,-,-,-,- C-FILM DE60-10082I SCREW-A -,-,-,-,2S-4X12,FEFZY,-,-,-,- VENT-MOTOR DE60-10199A SCREW-MACHINE -,MSWR18C,4,L10,TH(WASHER),+, BACK-COVER DE60-10199A SCREW-MACHINE...
  • Page 31 8. P.C.B Diagrams 8-1 P.C.B Diagrams ( This Document can not be used without Samsung’s authorization ) - 29 -...
  • Page 32 8-2 P.C.B Parts List Code No. Description Specification Remark DE92-01036A ASSY PCB AUTO 230V50HZ,VFD,RC-CM1819VI-03,CM1429 3002-000198 BUZZER-PIEZO 85DB,24,-,4KHZ,ST 2401-000037 C-AL 470uF,20%,16V,GP,TP,8x11.5,5 2401-000173 C-AL 1000uF,20%,35V,GP,TP,13x25,5 2401-000466 C-AL 10uF,20%,35V,GP,TP,5x7,5 C09,C24 2401-000598 C-AL 1uF,20%,50V,GP,TP,4x7,5 2401-000911 C-AL 22uF,20%,16V,GP,TP,5x7,5 2401-001415 C-AL 470uF,20%,35V,GP,TP,10x20,5 2401-002075 C-AL 4.7uF,20%,50V,GP,TP,5x11,5 2203-000260 C-CER,CHIP 10nF,10%,50V,X7R,TP,2012 C21,C22...
  • Page 33 8-2 P.C.B Parts List (Continued) Code No. Description Specification Remark 2007-000496 R-CHIP 2.2Kohm,5%,1/4W,TP,3216 R03,R04 2007-000671 R-CHIP 2Kohm,5%,1/8W,TP,2012 R08,R22,R24,R58 2007-000710 R-CHIP 3.9Kohm,5%,1/8W,TP,2012 R13,R16,R44~R47 2007-000766 R-CHIP 330ohm,5%,1/8W,TP,2012 R41,R42,R60~R65 2007-000931 R-CHIP 470ohm,5%,1/8W,TP,2012 R01,R02,R11 2007-000941 R-CHIP 47Kohm,5%,1/8W,TP,2012 R21,R23,R25~R28,R59 3501-001155 RELAY-MINIATURE 24VDC,200MW,3000MA,1FORMA,10MS, RY3,RY4,RY6,RY7 10MS 3501-001209 RELAY-POWER 24V DC,0.53W,-,1FORMA,9.3MS,10MS RY1,RY2,RY5...

  • Page 34: Wiring Diagram

    9. Wiring Diagram & Operating Sequence 9-1 Wiring Diagram ( This Document can not be used without Samsung’s authorization ) - 32 -...

  • Page 35: Description Of Operating Sequence

    9-2 Description of Operating Sequence When the oven is set to power level of 100%, 70% or 50% When the oven is operating under the power level of 100%, 70% or 50%, the coil of power relay 1 and 2 are energized intermittently by ON and OFF cycle of 30 seconds in order to supply power source to the High Voltage Transformer and thus to oscillate the magnetron.

  • Page 36: Operating Sequence

    9-2 Description of Operating Sequence (continued) Initial operating status of Power Relay when the START button is pressed. Relays are designed to work as shown in the figure below. When the oven is set to DEFROST power position, Inrush Relay1 and Power Relay1 are programmed to work with Inrush Relay2 and Power Relay2 not simultaneously but alternately.
  • Page 37 9-2 Description of Operating Sequence (continued) High Voltage Transformer input power sensing circuitry Refers to the circuitry that detects and check if the input power is correctly supplied to the primary terminal of High Voltage Transformer when the microwave oven is operating. If any abnormal condition(eg. Micro S/W, Re- lay open) is detected, the error code (E41, E42) shows on the display window.
  • Page 38 © Samsung Electronics Co., Ltd. October. 2010 This Service Manual is a property of Samsung Electronics Co.,Ltd. Printed in Korea Any unauthorized use of Manual can be punished under applicable Code No. : DE68-06007A International and/or domestic law.

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