Calex CME28GT, Service Manual

Page 1: ...anual 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 PCB Diagrams 9 Schematic Diagrams CALEX ...

Page 2: ...ould 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 ...

Page 3: ... the negative terminal of the high voltage capacitor 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 1 2 Pretaution 1 2 Special Servicing Precautions Continued 1 3 Special High Voltage Precautions PRECAUTION Se...

Page 4: ...0 SECONDS POWER SOURCE 230V 50HZ AC POWER CONSUMPTION MICROWAVE 1 500W GRILL 1 300W OUTPUT POWER FROM100 TO900W 6 LEVEL POWER IEC 705 TEST PROCEDURE OPERATING FREQUENCY 2 450MHz MAGNETRON OM75P 31 COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 517 W x 297 H x 379 D NET WEIGHT 18 Kg ...

Page 5: ...ING TIME SETTING INSTANTREHEAT COOK SELECTION AUTO DEFROST SELECTION WEIGHT SELECTION START BUTTON 3 Operating Instructions 3 1 Control Panel 3 2 Features External Views VENTILATION HOLES GRILL LIGHT DISPLAY COUPLER DOOR DOOR LATCHES OPEN DOOR PUSH BUTTON SAFETY INTERLOCK HOLES ROLLER RING CONTROL PANEL TURNTABLE 489mm 306mm 275mm 193mm 368mm ...

Page 6: ...not hit any adjacent parts 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 1 Discharge the high voltage capacitor 2 Disconnect all the leads 3 Remove the mounting bolts 4 Reconnect the leads correctly and firmly 4 2 Replacement of High Voltage Transformer PRECAUTION Servicemen shou...

Page 7: ...he door assembly 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 1 Insertion depth of the thin metal plate should be 0 5mm or less 4 3 3 Removal of Key Door Spring Remove pin hinge from Door E Detach spring from Door E and key door 4 3 1 Removal of Door C 4 3 2 Removal of Door E Door E Key Door Spring Door E ...

Page 8: ...orrect position with the coupler 8 Connect all the leads to the drive motor 9 Screw the drive motor cover to the base plate with a screw driver 4 4 Replacement of Fuse 4 5 Replacement of Drive Motor Disassembly and Reassembly Screw Drive Motor Cover Base Plate Thermo Switch Drive Motor 4 3 5 Reassembly Test After replacement of the defective component parts of the door reassemble it and follow the...

Page 9: ...FPC connector make sure that the holes on the connector are properly engaged with the hooks on the Plastic Fastener 1 Window display should not be disassembled as its mounting tabs will be broken If repair work is difficult replace with Ass y control panel 2 The membrane key board is attached to the escutcheon base with doublefaced adhesive tape Therefore applying hot air such as using of hair dry...

Page 10: ...inal and magnetron case should read open 1 The low voltage transformer is located on the control circuit board 2 Remove the low voltage transformer from the PCB Ass y and check continuity 3 Normal resistor reading is shown in the table 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 ...

Page 11: ...mbly adjust the Latch Body by moving it so that the oven door will not have any play in it Check for play in the door by pulling the door assembly Make sure that the latch keys move smoothly after adjustment is completed Completely tighten the screws holding the Latch Body to the oven assembly 4 Reconnect to Monitor switch and check the continuity of the monitor circuit and all latch switches agai...

Page 12: ...ssel with water 2 Stir water in glass vessel with thermometer and record glass vessel s temperature T1 10 1 C 3 After moving the water into another glass vessel place it in the center of the cooking tray Set the oven to high power and operate for 48seconds exactly 1 5 seconds included as a holding time of magnetron oscillation 4 When heating is finished stir the water again with the thermometer an...

Page 13: ...a radiarion preventing device make a repair record for the measured values and keep the data 2 If the radiation leakage is more than 4 mW cm2 after determining that all parts are in good condition functioning properly and the identical parts are replaced as listed in this manual notift that fact to CENTRAL SERVICE CENTER 5 13 2 At least once a year have the microwave energy survey meter checked fo...

Page 14: ...fective monitor switch NOTE1 4 Shorted HVCapacitor 5 Shorted HVTransformer NOTE2 NOTE 1 All of these switches must be replaced at the same time refer to adjustment instructions Check continuity of power relay contacts and if it has continuity replace power relay also NOTE 2 When HVTransformer is replaced check diode and magnetron also Oven does not accept 1 Key input is not in Sequence Refer to op...

Page 15: ...fan and fan motor Tighten screws of fan motor 2 Loose screws on H V Transformer Tighten screws of H V Transformer 3 Shorted H V Diode Replace H V Diode Turntable motor does not rotate 1 Open or loose wiring of turntable motor Check the wire of turntable motor 2 Defective turntable motor Replace turntable motor Oven stops operation during cooking 1 Open or loose wiring of primary Adjust door and la...

Page 16: ... 1 C1 C2 C3 C4 C5 C6 C7 M36 M35 D6 D1 D2 D3 D5 D4 D10 D7 D9 D8 M1 M2 M21 M22 M23 M24 M45 M25 M26 M37 M38 M39 M15 M14 M16 M18 M19 M41 M20 M3 M4 M5 M6 M7 M8 M9 M10 M12 M13 M46 M11 M44 M42 M17 M4O B1 B2 B2 B3 B4 NC NO COM M27 M28 M29 M43 M30 M32 M31 M33 M34 ...

Page 17: ...H MW7896W 3RD W WONWOO PP FB53WH P BUT 1 M22 2501 001107 C OIL 1 1uF 2 1KV BK 54x35x85 20mm 1 M23 DE61 50106A BRACKET HVC SECC T0 8 W31 L125 8 1 M24 DE91 70061A ASSY H V FUSE THV060T 0800 H 5KV 0 8A WHT 1 M25 DE91 70063A ASSY HVD V2M6 PI9 0 0 05MT 1 M26 DE61 40066A FOOT PP BLK 3RD W 2 M27 DE80 10001F BASE PLATE SGCC T0 8 W345 L565 MW5896W 1 M28 DE26 00008A TRANS H V SHV 293EC 230V50HZ 2230V 3 15V ...

Page 18: ... 0 1 7 4 Control Parts List Ref No Parts No Description Specification Q ty Remarks C 1 DE66 20281A BUTTON PUSH ABS 15g T2x37x86 WHT 3RD W B D 1 C 2 DE61 70076A SPRING BUTTON HSWR PI0 6 1 C 3 DE34 00032A SWITCH MEMBRANE PET CME 28GT CE2933T 1 C 4 DE72 70209B CONTROL PANEL ABS HR0370U M1933 T2 0 284 160G WHT W9501 1 C 5 DE67 40175A WINDOW DISPLAY SAN SMG 5g 1 C 6 RC W3EURO 00 ASSY PCB PARTS CE2933 2...

Page 19: ... DE60 10080A SCREW WASHER M5 L12 2S 4 MGT DE60 10080A SCREW WASHER M5 L12 2S 4 TNS HV DE60 10082H SCREW A 2S 4X12 TOOTHED 2 B PLTE DE60 10082H SCREW A 2S 4X12 TOOTHED 2 CN BOX DE60 10082H SCREW A 2S 4X12 TOOTHED 2 LATCH DE60 10082H SCREW A 2S 4X12 TOOTHED 5 PN OUT DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 CV TCO DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W ...

Page 20: ...8 P C B Diagrams 8 1 P C B Diagrams 8 1 ...

Page 21: ...14 R28 P19 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM 4 R03 R04 R06 R07 P20 2001 000435 R CARBON 1MOHM 5 1 8W AA TP 1 8X3 2MM 1 R25 P21 2001 000515 R CARBON 220OHM 5 1 8W AA TP 1 8X3 2MM 1 R15 P22 2001 000577 R CARBON 2KOHM 5 1 8W AA TP 1 8X3 2MM 1 R05 P23 2001 000613 R CARBON 3 9KOHM 5 1 8W AA TP 1 8X3 2MM 1 R11 P24 2001 000780 R CARBON 470OHM 5 1 8W AA TP 1 8X3 2MM 3 R09 R29 R30 P25 2001 ...

Page 22: ...K Y G YELLOW GREEN BLU BLUE ORG ORANGE YEL YELLOW COOK OFF WIRING COLOR 1 INPUT 230V 2 DOOR OPEN 3 LAMP ON 4 P C B PATTERN 5 P C B IN OUT POINT MAGNETRON FA F RED RED RED RED SYMBOL COLOR BRN BROWN BLK BLACK RED RED BLU BLUE WHT BLK HIGH VOLTAGE TRANSFORMER HIGH VOLTAGE CAPACITOR HIGH VOLTAGE DIODE TO CHASSIS H V FUSE ...