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Samsung Electronics

6. Troubleshooting

6-1

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 ONE LEAD WIRE 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.

5. DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE STATIC DISCHARGE MAY DAMAGE IT.

ALWAYS TOUCH GROUND WHILE WORKING ON IT TO DISCHARGE ANY STATIC CHARGE BUILT UP.

6-1 Electrical Malfunction

SYMPTOM

CAUSE

CORRECTIONS

Oven is dead.

1. Open or loose lead wire harness

Check fan motor when thermal cutout is defective.

Fuse is OK.

2. Open thermal cutout (Magnetron)

No display and no operation at all.

3. Open low voltage transformer

Check Ass'y PCB when LVT is defective.

4. Defective Ass'y PCB

No display and no operation at all.

1. Shorted lead wire harness

Check adjustment of primary, interlock monitor,

Fuse is blown.

2. Defective primary latch switch (NOTE 1)

door sensing 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-Sequence

Refer to operation procedure.

key input (Program)

2. Open or loose connection of membrane

key pad to Ass'y PCB

3. Shorted or open membrane panel
4. Defective Ass'y PCB

Replace PCB main.

1. Off-alignment of latch switches

Adjust door and latch switches.

2. Open or loose connection of high voltage

circuit especially magnetron filament
circuit

NOTE: Large contact resistance will bring
lower magnetron filament voltage and

Timer starts countdown but no

cause magnetron to lower output and/or

microwave oscillation.

intermittent oscillation.

(No heat while oven lamp and

3. Defective high voltage components

Check high voltage component according to

fan motor turn on.)

H.V.Transformer

component test procedure and replace if it is

H.V.Capacitor

defective.

H.V.Diode,H.V.Fuse
Magnetron

4. Open or loose wiring of power relay
5. Defective primary latch switch
6. Defective power relay or Ass'y PCB

Replace PCB main.

Содержание CE2733R

Страница 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 ...

Страница 2: ...ce test 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...

Страница 3: ...nicians should 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 sensi...

Страница 4: ...h 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 Samsung Electronics 1 2 Special Servicing Precautions Continued 1 3 Special High Voltage Precautions PRECAUTION Never touch any...

Страница 5: ...ECONDS POWER SOURCE 230V 50HZ AC POWER CONSUMPTION MICROWAVE 1 400W GRILL 1 100W OUTPUT POWER FROM100 TO850W 6 LEVEL POWER IEC 705 TEST PROCEDURE OPERATING FREQUENCY 2 450MHz MAGNETRON OM75PH 31 COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 489 W x 275 H x 368 D NET WEIGHT 15 5 Kg SHIPPING WEIGHT 17 Kg ...

Страница 6: ...G START BUTTON INSTANTREHEAT COOK SELECTION 1 2 3 h 10 min min 1 min 10 s Kg g Auto 1 2 3 4 30 s AUTO DEFROST SELECTION 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 METAL RACK SAFETY INTERLOCK HOLES ROLLER RING CONTROL PANEL TURNTABLE 489mm 306mm 275mm 193mm 368mm ...

Страница 7: ...enna does 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 Servi...

Страница 8: ... 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 Remove pin hinge from Door E Detach spring from Door E and key door 4 3 2 Removal of Door C 4 3 3 Removal of Door E Upper Hinge Lower Hinge Scre...

Страница 9: ...the above three switches operate properly check if any other part such as the control circuit board blower motor or high voltage transformer is defective 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 4 Reassembly Test After replacement of the defective component parts of the door reassemble it and ...

Страница 10: ...cting the 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 o...

Страница 11: ...ament 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 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...

Страница 12: ... oven assembly 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 swi...

Страница 13: ...r glass vessel 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 ther...

Страница 14: ...r of 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 check...

Страница 15: ...witch 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 Sequence R...

Страница 16: ...d 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 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 d...

Страница 17: ... List 7 1 Exploded Views 7 1 M1 M4 M5 M27 M25 M36 C1 C2 C3 C4 C5 C6 C7 M30 M31 M33 M29 M32 M28 M3 M2 M18 M26 M17 M6 M7 M9 M8 M20 M21 M22 M23 B1 B2 B4 B3 M11 M12 M14 M13 M37 M38 M39 M40 M15 M34 M19 M35 M10 D6 D1 D2 D3 D5 D4 D7 M24 M41 M42 M16 M43 D8 ...

Страница 18: ...60 250V 7 5A H 1 MG TCO M21 OM75PH 31 ESS ASSY MAGNETRON OM75PH 31 ESS 1 M22 DE71 60457A COVER AIR PP T1 7 W115 5 L150 WHT 3RD W0 1 M23 DE93 20101A ASSY BODY LATCH 3RD 0 7 P BUTTON PP 1 M24 DE66 90113A LEVER DOOR PP TB53 GH10 T2 5 W31X100 5 12G NTR 3RD W 1 M25 DE71 60462A COVER CEILING MICA SHEET T0 3 W109 2 L114 2 1 M26 DE47 20010A THERMOSTAT PW 2N 120 60 187Y 250V7 5A 120 1 CAV TCO M27 DE31 1015...

Страница 19: ...GRILL 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 00018C SWITCH MEMBRANE PET FILM CE2733R BWT WHT 1 C 4 DE72 70210A CONTROL PANEL ABS WHT 100g MW779BW 3RD 0 7 1 C 5 DE67 40174A WINDOW DISPLAY SAN T2 W39 387 L93 CLEAR 5g 3R 1 C 6 RC W3LCD3 01 ASSY PCB ...

Страница 20: ... TOOTHED 4 OUT PANEL DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 CVT TCO DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 2 D MOTOR DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 2 MGT TCO DE60 10122A SCREW TAP TH TAP TH 2 4X8 FE FN 1 CV CEILING DE60 10122A SCREW TAP TH TAP TH 2 4X8 FE FN 1 P OUTER DE60 10195A SCREW STAR POLE TH 2 4 12 SWCH18A ZNC...

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

Страница 22: ...ON 10KOHM 5 1 8W AA TP 1 8X3 2MM 4 R08 R10 R14 R28 P19 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM 7 R03 R07 R31 R32 R33 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 470OH...

Страница 23: ...OW 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 Samsung Electronics ...

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