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Calex CMM17 Service Manual

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SERVICE
MICROWAVE OVEN
CALEX
MICROWAVE OVEN
CMM17
2. Statements
375
225
525
112
750W
0
1
2
3
60
50
4
40
5
30
6
20
7
10
8
9
Manual
CONTENTS

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Summary of Contents for Calex CMM17

  • Page 1: Table Of Contents

    MICROWAVE OVEN CMM17 SERVICE Manual MICROWAVE OVEN CONTENTS 1. Precaution 2. Statements 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments 750W 6. Troubleshooting 7. Exploded Views and Parts List 8. Wiring Diagrams CALEX...
  • 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 operated with the door open. for any service test or inspection within (b) Make the following safety checks on the microwave generating all ovens to be serviced before activating...

  • 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 Pretaution 1-2 Special Servicing Precautions (Continued) 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 indicated in the circuit diagram by shading, 19.
  • Page 5 2. Specifications 2-1 Table of Specifications CMM17 POWER SOURCE 230V 50Hz, AC POWER CONSUMPTION 1300W OUTPUT POWER FROM112W TO 750W (6 LEVEL POWER) (IEC-705 TEST PROCEDURE) OPERATING FREQUENCY 2450MHz TIMER 60 MINUTES COOLING METHOD COOLING FAN MOTOR MAGNETRON OM75S(31) OUTSIDE DIMENSIONS...

  • Page 6: Operating Instructions

    3. Operating Instructions 3-1 Control Panel DEFROST 750W...
  • Page 7 Operating Instruction 3-2 Features & External Views Ventilation Hole Light Door Safety Interlock Holes 750W Control Panel Door Latches Open Door Push Button Guide Roller Glass Tray 750W 200mm 357mm 489mm 351mm 3-3 Checking That Your Oven is Operating Correctly NOTE: The oven must be plugged into an appropriate wall socket.
  • Page 8 Operating Instruction 3-4 Variable Power Cooking Chart Operation: OUTPUT POWER LEVEL Set the COOKING POWER CONTROL CMM17 knob to the appropriate power level by turning it. HIGH 100% 750W MEDIUM HIGH 525W MEDIUM 375W 225W DEFROST 150W WARM 112W 3-5 Adjusting the Cooking Time During Cooking...

  • Page 9: Disassembly And Reassembly

    4. Disassembly & Reassembly 4-1 Replacement of Magnetron, Motor Assembly and Lamp Remove the magnetron including the shield case, permanent magnet, choke coils and capacitors (all Thermo S/W Lamp of which are contained in one assembly). Fan Motor 1. Disconnect all lead wires from the magnetron and lamp.
  • Page 10 Disassembly & Reassembly 4-3 Replacement of Door Assembly 4-3-1 Removal of Door Assembly Remove hex bolts securing the upper hinge and lower hinge. Then remove the door assembly. Upper Hinge Screws Lower Hinge Screws 4-3-2 Removal of Door "C" Insert flat screwdriver into the gap between Door "E"...
  • Page 11 Disassembly &Reassembly 4-3-5 Reassembly Test After replacement of the defective component parts of the door, reassemble it and follow the instructions 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 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.

  • Page 12: Alignment And Adjustments

    5. Alignment and Adjustments PRECAUTION 1. High voltage is present at the high voltage terminal of the high voltage transformer 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 discharge the high voltage capacitor.
  • Page 13 Alignment and Adjustments 5-3 High Voltage Capacitor 1. Check continuity of the capacitor with meter set at the highest ohm scale. 2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 10MΩ. 3.
  • Page 14 Alignment and Adjustments 5-6 Output Power of Magnetron CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR 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 of 190mm) * One glass thermometer with mercury column...
  • Page 15 Alignment and Adjustments 5-8 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 750W meter.

  • Page 16: Troubleshooting

    6. Troubleshooting WARNING FOR HIGH VOLTAGE 4000 VOLTS EXIST AT THE HIGH VOLTAGE AREA. DO NOT OPERATE THE OVEN WITH CABINET PARTS REMOVED. DO NOT REMOVE THE CABINET PARTS IF THE POWER SUPPLY CORD IS PLUGGED IN THE WALL OUTLET. UNPLUG THE POWER CORD BEFORE SERVICING.
  • Page 17 Troubleshooting 6-1 Electrical Malfunction (Continved) Parts Cause Diagnosis Remedy 1) Too small If a small amount of food is heated for a long time, To increase the oven a load period of microwave may turn off during operation. load, add a glass of Microwave water into the oven.
  • Page 18 Troubleshooting 6-2 Unsatisfactory Cooking Parts Cause Diagnosis Remedy 1) Open cathode Check the terminals with a multimeter to see Replace magnetron. of magnetron if the heater circuit is open. 2) Defective Check the H. V. Diode for continuity in the reverse and Replace H.

  • Page 19: Exploded Views And Parts List

    7. Exploded Views and Parts List 7-1 Main Exploded View...
  • Page 20 PP(A353),BLK,MW5630T DE31-10154A MOTOR-DRIVE M2HJ49ZR02,ST-16,50/60HZ DE80-10003A BASE-PLATE SGCC1-Z,T0.8,W340,L550,M745 DE47-20033A THERMOSTAT PW-2N,80/70,125V15A/250V7.5A,1 CV-TCO DE71-60011A COVER-MGT PP,T2.0,WHT,M745 DE92-40170Y ASSY DOOR CMM17(M633),PURE-WHT,CALEX DE93-30365L ASSY CONTROL-BOX CMM17(M633),PURE-WHT,CALEX DE74-20102B TRAY-COOKING GLASS,T5.0,PI288,780G,M745 DE92-90436A ASSY-GUIDE ROLLER D16.5,MW4370W DE67-60002A COUPLER PPS,5GR,BRN,M97G45 DE27-10020A COIL-MC CHOKE TC,101 : Electrostatically Sensitive Devices...
  • Page 21 7-3 Assembly Door Parts List Ref. No. Parts No. Description Specification Q'ty Remarks DE67-20158C SCREEN-DOOR ACRYL,T1.5,W372.5,L197.8,WHT,M DE02-00125A TAPE-DOUBLE FACE ACRYL,T0.45,W9,WHT,WF103,#4420 DOOR/A DE64-40252V DOOR-A ABS(HR0370),-,-,-,PURE-WHT,CMM17(M633) DE92-50126D ASSY DOOR-E M745,-,BLK,ASSY PURCHASING DE64-40008B DOOR-C PP,T1.5,BLK,CE745G DE01-00003A FILM-DOOR PE-FILM,T0.15,W142,L262,M745 DE64-40006A DOOR-KEY POM(TC3005),T2.0,12GR,BLK,CE94 DE61-70033A SPRING-KEY ES,HSWR10,PI0.6,D6.0,L22.3,BLU...
  • Page 22 Exploded Views and Parts List 7-5 Standard Parts List Parts No. Description Specification Q'ty Remarks DE60-10012A SCREW-TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH N-F-EA DE60-10012A SCREW-TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH P-C-EA DE60-10080A SCREW-WASHER M5,L12,2S DE60-10080A SCREW-WASHER M5,L12,2S TNS-HV DE60-10082H SCREW-A 2S-4X12,TOOTHED B-PLTE DE60-10082H SCREW-A 2S-4X12,TOOTHED BD-LAT DE60-10082H SCREW-A 2S-4X12,TOOTHED...

  • Page 23: Wiring Diagrams

    8. Wiring Diagram Wiring Diagram T.C.O PRIMARY V.P.C NOISE (MGT) FILTER H.V.D VOLTAGE FREG CAPACITOR 230V FUSE 0.95uF (0.75A) AC 230V H.V.C 50HZ H.V.T RESISTOR T.C.O TIMER SECONDARY INRUSH MAGNETRON (CAVITY) NOTE DOOR IS OPENDS BLU,ORG BROWN BRN,WHT BLUE BLU,ORG BRN,WHT ORANGE WHITE...