Samsung CE2974R, Service Manual

Page 1: ...CEManual 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 SRSC ...

Page 2: ... or inspection within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment integrity and connections d Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is releas...

Page 3: ...hes 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 and power relay as well as the Interlock Monitor Switch The correct adjustment of these switches is described elsewhere in this manual Make sure that the fuse has the correct rating for the particular model being repaired 13 Design Alteratio...

Page 4: ...e terminal of the high voltage capacitor to 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 Samsung Electronics 1 2 Special Servicing Precautions Continued 1 3 Special High Voltage Precautions PR...

Page 5: ...MICROWAVE 1 500W GRILL 1300W OUTPUT POWER FROM 100 TO 900W IEC 705 TEST PROCEDURE OPERATING FREQUENCY 2 450MHz MAGNETRON OM75PH 31 COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 517 W x 297 H x 424 D 2 2 Comparison Chart AUTO REHEAT O AUTO COOK O POWER LEVEL O TIME SETTING AND WEIGHT O AUTO DEFROST O GRILL COOK O COMBI COOK O ...

Page 6: ...lection Stop Cancel Button Combi Mode Selection Grill Mode Selection Auto Cook Selection Dual Cook Selection Cooking Control Knob 3 Operating Instructions 3 1 Control Panel Samsung Electronics 3 1 3 2 Features External Views Door Door Handle Ventilation Holes Light Safety Interlock Holes Control Panel Display Roller Ring Coupler Glass Plate Door Latches Grill 517mm 297mm 424mm ...

Page 7: ...es 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 1 Replacement of High Voltage Transformer PRECAUTION Servicemen s...

Page 8: ... screwdriver into the gap between Door E and Door C to remove Door C Be careful when handling Door C because it is fragile 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 4 Removal of Key Door Spring Remove pin hinge from Door E Detach spri...

Page 9: ... remount it in the correct position 8 Connect all the leads to the drive motor 9 Screw the deive motor cover to the base plate with a screw driver 10 Remount the coupler in the correct position 4 4 Replacement of Fuse 4 5 Replacement of Drive Motor Disassembly and Reassembly Screw Drive Motor Cover Base Plate Drive Motor After replacement of the defective component parts of the door reassemble it ...

Page 10: ...emove the screw securing the ground tail of the keyboard 1 Pull the lever end of the plastic fastener and remove the Flexible Printed Circuit FPC of membrane panel 2 Remove screws securing the control circuit board 3 Lift up the control circuit board from the Ass y control box 4 When reconnecting the FPC connector make sure that the holes on the connector are properly engaged with the hooks on the...

Page 11: ...t terminal 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 Filament Terminals Secondary Terminal Primary Terminals Secondary Approx 100W Filament Approx 0W Primary Approx 1 450W Terminals Resistance 1 2 Input 1 000W 3...

Page 12: ...ust 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 again by fol...

Page 13: ...on 4 When heating is finished stir the water again with the thermometer and measure the temperature T2 5 Subtract T1 from T2 This will give you the water temperature rise DT 6 The output power is obtained by the following formula Output W 90 x DT 7 Normal temperature rise for this model is 9ûC to 11ûC at HIGH NOTE 1 Variations or errors in the test procedure will cause a variance in the temperatur...

Page 14: ... 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 12 2 At least once a year have the microwave energy survey meter checked f...

Page 15: ...sing switch 3 Defective 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 Sequ...

Page 16: ...noise can be heard 1 Loose 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 Replace turntable motor 2 Defective turntable motor Oven stops operation during cooking 1 Open or loose wiring of primary Adjust door and latch swi...

Page 17: ...M1 M2 M21 M22 M23 M24 M25 M26 M36 M37 M38 M39 M15 M14 M16 M18 M19 M41 M20 M3 M4 M5 M6 M7 M8 M9 M10 M12 M13 M11 M44 M42 M17 M4O M45 D1 D12 D2 D3 D4 D5 D6 D10 D11 D7 D9 D8 B1 B2 B2 B3 B4 NC NO COM C2 C1 C3 C7 C5 C8 C6 C10 C11 C9 C13 C4 C12 M27 M28 M29 M43 M30 M32 M31 M33 M34 M35 ...

Page 18: ... 001031 LAMP INCANDESCENT 230V 173mA 40W ORG 25x69mm 1 M21 DE93 20020A ASSY BODY LATCH RE 43B 90B 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 10001G BASE PLATE SGCC T0 8 W345 L565 3RD 1 M2...

Page 19: ... 00173P ASSY DOOR A CE2914R BWT WHITE RUSSIA FISH2 1 Exploded Views and Parts List 7 3 Door Parts List Ref No Parts No Description Specification Q ty Remarks C 1 DE67 40145A WINDOW DISPLAY ACRYL T2 W40 L77 SMOG 30G 1 C 2 DE71 00031V COVER PANEL ABS CE2974R BWT WHITE 3RD 1 0 FISH2 1 C 3 DE72 00006V CONTROL PANEL ABS CE2974R BWT WHITE RUSSIA 1 C 4 DE66 20176E BUTTON SELECT C ABS HR0370U 5G WHT M959 ...

Page 20: ...TAP TH TH M4 L10 FRFZY 3 B UPPE DE60 10069A SCREW TAP TH TH M4 L10 FRFZY 1 CV AIR DE60 10072A SCREW TAP TH TH M4 L16 FEFZY 2 SLOT 1 CB CMP 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 O...

Page 21: ...8 1 Samsung Electronics 8 P C B Diagrams 8 1 P C B Diagrams ...

Page 22: ... 180OHM 5 1 4W AA TP 2 4X6 4MM 5 R27 R28 R29 R30 R31 P26 2001 000032 R CARBON 180OHM 5 1 4W AA TP 2 4X6 4MM 2 R32 R33 P27 2001 000034 R CARBON 220OHM 5 1 4W AA TP 2 4X6 4MM 2 R34 R40 P28 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM 5 R07 R08 R10 R15 R16 P29 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM 5 R17 R20 R21 R23 R35 P29 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM 2 R36 R3...

Page 23: ...VICE REPLACEMENT USE 16 GA 105ûC THERMOPLASTIC COVERED WIRE EXCEPT FOR HIGH VOLTAGE LEADS OR AS NOTED ON SPECIAL LEADS POWER MUST BE DISCONNECTED BEFORE SERVICING THIS APPLIANCE R RED RED ORG RED BLK MAGNETRON HIGH VOLTAGE DIODE TO CHASSIS FA F HIGH VOLTAGE TRANSFORMER HIGH VOLTAGE CAPACITOR BLK RED ORG SYMBOL COLOR BLK RED ORANGE BLACK ...