Samsung CE979GSE Service Manual Download Page 1

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MICROWAVE OVEN

CE979GSE

SERVICE

Manual

MICROWAVE OVEN

CONTENTS

1. Precautions

2. Specifications

3. Operating Instructions

4. Disassembly and Reassembly

5. Alignment and Adjustments

6. Circuit Description

7. Troubleshooting

8. Exploded Views and Parts List

9. PCB Diagrams

10. Schematic Diagrams

TAWIL

Summary of Contents for CE979GSE

Page 1: ...AVE OVEN CONTENTS 1 Precautions 2 Specifications 3 Operating Instructions 4 Disassembly and Reassembly 5 Alignment and Adjustments 6 Circuit Description 7 Troubleshooting 8 Exploded Views and Parts List 9 PCB Diagrams 10 Schematic Diagrams TAWIL ...

Page 2: ...k 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 and secondary switches 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 Alteration Warn...

Page 3: ... this includes the filament 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 2 The high voltage capacitor remains charged for about 30 seconds after disconnection Short the negative terminal of the high voltage capacitor to to the oven chassis Use a screwdri...

Page 4: ...1 ESS COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 517 W x 340H x 435 D POWER LEVEL CE979GSE 10 85W 4 sec 26 sec 20 170W 7 sec 23 sec 30 255W 10 sec 20 sec 40 340W 13 sec 17 sec 50 425W 16 sec 14 sec 60 510W 19 sec 11 sec 70 595W 22 sec 8 sec 80 680W 25 sec 5 sec 90 765W 28 sec 2 sec 100 850W 30 sec 0 sec ON TIME OFF TIME 2 2 Comparison Chart MODEL FEATURE MORE LESS O AUTO COOK DISH O AUTO ...

Page 5: ... 1 Min STOP CANCEL 3 Operating Instructions 3 1 Control Panel Samsung Electronics 3 1 3 2 Features External Views DOOR LATCHES DOOR LIGHT HEATER DISPLAY CONTROL PANEL INHALATION SLOT GUIDE ROLLER VENTILATION HOLES GLASS TRAY SAFETY INTERLOCK HOLES ...

Page 6: ...ver 7 Remove screws 2 securing the thermal cutout switch 8 Remove screws securing the magnetron to the wave guide 9 Remove the magnetron very carefully 10 Remove screws from the back panel to take out fan motor 11 When removing the magnetron make sure that its antenna does not hit any adjacent parts 12 When replacing the magnetron be sure to remount the magnetron gasket in the correct position and...

Page 7: ...s securely 1 Remove bolts securing the upper hinge and lower hinge then remove the door assmbly 2 After replacing the door check the operation of the primary interlock switch the secondary interlock switch and the interlock monitor switch 3 Microwave emission should not exceed 5 All service adjustments should be made for minimum RF emission Disassembly and Reassembly H V TRANS H V FUSE HINGE UPPER...

Page 8: ...Remove screws securing the elevation motor to the cavity 6 Remove the elevation motor 7 When replacing the elevation motor be sure to remount it in the correct position 8 Reconnect all the leads to the elevation motor 9 Screw the elevation motor cover to the base plate with screw driver 10 Remount the coupler in the correct position 4 6 Replacement of Elevation Motor Disassembly and Reassembly ELE...

Page 9: ...ch 2 Push up the mounting tabs which support the primary interlock switch 3 Make necessary adjustments and microwave emision check according to ALIGNMENT AND ADJUSTMENTS on page 5 2 whenever they are repaired or replaced 4 7 Replacement of Grill Heater 4 8 Replacement of Interlock Monitor Switch and Door Sensing Switch 4 9 Replacement of Primay Interlock Switch 4 4 Samsung Electronics Disassembly ...

Page 10: ...id touching the Touch control clrcuitry 2 Disconnect the connectors from the control circuit board 3 Remove screws L and Msecuring the control circuit bord 4 Lift up the control circuit board from right side and remove the hooks holding the contol circuit board to the box assembly 1 Disconnect all lead wires from the gas sensor and the thermostat 2 Remove screws securing the air guide 4 10 Replace...

Page 11: ...filament terminal and the 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 readings a shown in the table PRECAUTION 1 High voltage is present at the high voltage terminals during any cook cycle 2 Do not attempt to measurement the high voltage 3 Before ...

Page 12: ... to the oven assembly adjust the Latch Body by moving it so that the oven door has vo play Check for play 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 re check that the the monitor circuit and all latch switches are secured see compon...

Page 13: ... in the temperature rise Additional power test should be done if temperature rise is marginal NOTE 2 Output power in watts is computed by multiplying the temperature rise step E by a factor of 91 times the centigrade temperature The microwave heat distribution can be checked indirectly by measuring the water temperature rise at certain positions in the oven 1 Prepare five beakers made of Pyrex eac...

Page 14: ...t survey meter dual ranges to 2 450MHz 4 When measuring the leakage always use the 2 inch spacer cone with the probe Hold the probe perpendicular to the cabinet door Place the spacer cone on the door seam and move the probe along the viewing windows and exhaust openings Move the probe at about 1 inch per second If the leakage from door seam is measured near a corner keep the probe perpendicular ma...

Page 15: ...exceed the limited scale 2 The test probe must be held on the grip of the handle otherwise a false reading may result when the operator s hand is between the handle and the probe 3 When high leakage is suspected do not move the probe horizontally along the oven surface this may cause damage to the probe 4 Follow the recommendation of the manufacturer of the microwave energy survey meter 5 9 5 Reco...

Page 16: ...er This 3 4V is applied to the magnetron to heat the magnetron filament through two noise preventing choke coils 6 High voltage 2 230 volts AC is generated by the high voltage transformer secondary This secondary voltage is increased by the diode and high voltage capacitor This resultant DC voltage is then applied to the anode of the magnetron As shown in Fig 2 the first half cycle of the high vol...

Page 17: ...rimary interlock switch open and the contacts of interlock monitor switch close 5 If the contacts of primary interlock switch do not function properly the monitor fuse blows out because of the large current surge caused by the monitor switch activation which stops magnetron oscillation see Fig 3 6 5 When the CANCEL pad is touched during cooking 1 Touching the CANCEL pad once stops cooking Touching...

Page 18: ...hen cookis in the basic location If the weight is 700g the cooking is done in the basic location 4 Manual cooking is done in the basic location with only the rotating motor operating Maximum of 4Kg including the dish if the weight exceeds 4kg an ÒE5Ó error occurs 7 1 3 Operating Principle of the Height Sensor The weight sensor converts the weight of the food into a series of pulses that are compar...

Page 19: ...nds A normal reading is between 0350 and 0650 8 Press the cancel key to complete the adjustment 7 1 5 Error codes Metal Rack roasting spitspit two skewers glass bowl Error indication Cause of occurrence Management method Remarks E0 Gas sensor open short Check the connection and Automatic sensor value cooking reheating reheating between 6 and 211 Put the power switch again and and use it after 10 m...

Page 20: ...ly contact the rotating dish Putting food that exceeds 4kg Total can damage the weight sensor 2 Use only genuine replacements that fit the model C E rotating dish and supporter 3 When food exceeding 300g Total is put on the rotating dish the oven operates for only 10 minutes Error E6 occwrs 7 1 8 Reppacing Parts 1 Discharge the capacitor for about 5 to 6 minutes after cutting the power and then co...

Page 21: ...G 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 Item Checking Procedwre Inspection of a Put about 200cc of tap water water temperature 10 18 on microwave oven cooking the rotating dish b Do the following Microwave oven high time setting 5 minute start cooking c...

Page 22: ...d poor Exchange c Monitor switch short switch Poor operation Latch adjustment d HVC Short circuit Exchange e Latch operation Poor operation Latch adjustment Problem location Cause Measures Electrical a Grounding wire Bad grounding Inspection shock b AC 230V power line is Lead wire not connected the chassis Exposed part of the power Adjustment line is shorting the chassis Lamp is not on a Lamp and ...

Page 23: ...ng left over Explanation c Piacement of the bupporter Poor placement of and adjustment rotating shaft Microwdve leakage a Condition of the door Assembly Not enough contact Adjust the door puring operation b The surface contacting the in the front side of the hinge front of the cooking room and cooking room and the Checktheoperating the door door condition of the Deformation safety switch Adjustmen...

Page 24: ...djustment c Alien substance in the motor Fan motor a Continuity between terminals Disconnection Exchange doesn t rotate Measure after disconnecting the Poor insertion and Adjustment power and lead wire disconnection b Lead terminal Bad contacts needs Adjustment c Rotate the fan by hand cleaning or exchange Poor defrosting a Check the connections to Poor connection Adjustment the weight sensor b Re...

Page 25: ...ction switch 3 Applicability of parts Check that exact replacement parts are being used AC 230V 4 Placement of Check for looseness jamming or terminal insertion lead wire of the lead wire check that there are no shorts to ground 5 Connection of Check the connection between he screw and bolt screw and bolt 6 Alien substance Check for a cut line within the equipment insertion check combustible forei...

Page 26: ...arts List 8 1 Exploded Views 8 1 37 NC NO COM NC NO COM 1 2 3 19 20 21 28 23 25 27 26 32 33 34 35 29 30 31 57 58 60 41 44 45 51 53 38 36 24 4 5 46 48 47 49 50 16 39 40 52 65 63 61 62 64 56 59 66 54 36 6 8 7 9 10 12 15 14 55 18 17 13 22 11 42 43 ...

Page 27: ...550 1 16 DE39 40005B ASSY WIRE HARNESS D 220V60HZ RE 642 652 1 17 DE39 40515A ASSY WIRE HARNESS A 220V 50HZ E9G88S ELE 1 18 DE61 30054A SUPPORTER MGT SECC T0 6 W33 2 L317 MW563 1 19 DE47 20052A THERMOSTAT PW 2N 160 60 TERMINAL Z BK T2 1 20 DE03 30035A MAGNETRON OM75PH 31 ESS 1 21 DE92 90421A ASSY COVER AIR RE 642 1 22 DE93 20020A ASSY BODY LATCH RE 43B 90B 1 23 3405 000178 SWITCH MICRO 250V 15A 20...

Page 28: ...4 1 48 DE39 40396A WIRE HARNESS D 110 220V RE 850V DOM 1 49 DE61 50301A BRACKET COVER SBHG1 A RE 707GMS 1 50 DE32 60013A SENSOR GAS ST MWO 1 51 DE47 20039A THERMOSTAT PW 2N 120 110 V TYPE 1 52 DE93 90002A ASSY BKT TCO RE 642 1 53 DE72 60035H GUIDE AIR SECC T 0 6 W 240 L 242 5 CE 1 54 DE39 30147A WIRE LEAD E 140 120 GRN BLK 1 55 DE65 20014A CABLE CLAMP DA 6N NY 66 1 56 DE74 20011A TRAY COOKING GLAS...

Page 29: ...L352 5 1 3 DE64 40076A DOOR SUB PC NTR 140G RE 642 1 4 DE92 50001A ASSY DOOR E SELANT BLK RE 642 1 5 DE64 40041A DOOR C PP A353 BLK MW5630T 1 7 DE64 40175A DOOR KEY POM TC3005 BLK 13G RE 330 1 8 DE61 70027A SPRING KEY HSW3 PI0 6 D5 BLUING 1 9 DE60 60008B PIN HINGE PI4 L15 NYLON 66 M301TBC NTR 2 10 DE68 10001A LABEL BRAND AL SAMSUNG S S 8 0 50 1 Exploded Views and Parts List 1 2 3 4 5 10 7 8 9 ...

Page 30: ...3G CE979GSE 1 4 DE71 60177A COVER LAMP POM T1 5 4G 1 5 DE64 10049A KNOB COVER ABS NTR 9G RE 642 1 6 DE66 20065A BUTTON SELECT D PC NTR 5G RE 642 1 7 DE66 20069A BUTTON SELECT C PC NTR 6G RE 642 1 8 DE66 20064A BUTTON CAP ABS NTR 6G RE 642 1 9 DE66 20066A BUTTON SELECT B PC NTR 6G RE 642 1 10 DE91 10427A ASSY P C B MAIN AC230V 60HZ S V F D CE979GSE 1 11 ASSY COVROL BOX 230V50HZ CE979GSE AMFO 1 Expl...

Page 31: ...HEAT DE02 00029A TAPE SCOTCHPAR POLYESTER 3M 893 W50 1 DE60 10003A SCREW TAPPING TH 2S M 4 L 6 STS410 N 2 P CEIL DE60 10098A SCREW ASSY TAPTITE PH TC M4X8 SWRCH18A Z 5 M GEAR DE60 10082H SCREW A 2S 4X12 TOOTHED 1 HVC DE60 10072A SCREW TAP TH TH M4 L16 FEFZY 2 SLOT 4 FOOT DE60 10045A SCREW TAP PH PH M3 L6 FEFZY 1 SENSOR DE60 10082H SCREW A 2S 4X12 TOOTHED 8 BAS P DE60 10082H SCREW A 2S 4X12 TOOTHED...

Page 32: ...9 P C B Diagrams 9 1 P C B Diagrams Samsung Electronics 9 1 C021 C020 4 194304MHz 220J 220J ...

Page 33: ...10 2001 000429 R CARBON 1Kohm 5 1 8W AA TP 1 8x3 2mm 5 R003 R011 R017 R018 R028 2001 000429 R CARBON 1Kohm 5 1 8W AA TP 1 8x3 2mm 6 R029 R036 R048 R052 R054 2001 000435 R CARBON 1Mohm 5 1 8W AA TP 1 8x3 2mm 1 R004 2001 000515 R CARBON 220ohm 5 1 8W AA TP 1 8x3 2mm 1 R047 2001 000613 R CARBON 3 9Kohm 5 1 8W AA TP 1 8x3 2m 7 R001 R002 R013 R014 R021 R022 R033 2001 000613 R CARBON 3 9Kohm 5 1 8W AA T...

Page 34: ...FUSE 250V 1 6A F FA MAGNETRON 0V HEATER GRILL RELAY E RELAY PCB PARTERN E MOTOR D MOTOR F MOTOR GRILL T C O H V T H V D H V C FUSE 1mH IND BLK BLK ORG ORG ORG YEL YEL BLU BLU BLU BRN PRIMARY S W L DM FM EM L V TRANS ASSY MAIN P C B MAIN RELAY GRILL RELAY POWER RELAY DOOR SENSING SWITCH E MOTOR RELAY H LAMP RELAY WHT BLK COM NO YEL YEL COM NO ORG BRN BRN COM NO ORG WHT NC L V T GND GND WEIGHT SENSO...

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