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6. Troubleshooting

6-1 Electrical Malfunction

NOTE

Interlock monitor switch must be replaced when the fuse is blown out.

Parts

Cause

Diagnosis

Remedy

Fuse blows

out when

door is

opened.

Defective primary

interlock switch

are winding.

Check continuity of the primary switch terminals

with wire removed using a multimeter. If there is

continuity inter between switch terminals when door

is opened,the switch is defective.

Replace the primary

interlock switch

Defective interlock

monitor switch

Check continuity of the monitor switch terminals

with wire removed by using a multimeter.

If there is continuity between switch terminals

the

door is closed, the switch is defective.

Replace the interlock

monitor switch

Fuse is

Open

Layer short of the

secondary coil of

H. V. Transformer

The fuse will not blow right away, but if it blows in

a few seconds, then there is a layer short If the

fuse blows with H. V. Trans secondary open, the

transformer may be faulty.

Replace H. V.Transformer

Oven lamp

does not

light.

1) Fuse blown out

Check fuse.

Replace the fuse.

2) Poor contact of

power cord.

Check continuity of power supply cord. Also

check whether the power cord is securely wired.

Adjust or replace

the power supply cord

3) Defective lamp

The fan motor rotates, but lamp does not light.

Replace the lamp.

4) Defective timer

contacts

Check the terminals of timer for continuity,turning

the timer knob ON and OFF repeatedly.

Replace the timer.

5) Thermal cutout

S/W open

In this case the oven lamp and fan do not turn on

Replace the thermal

cutout S/W

Fan does

not operate.

1) Defective fan

motor.

If 230V is found at motor terminals, the motor

should be replaced.

Replace the motor.

2) Defective con-

tacts of timer

The oven lamp does not light and fan motor does

not operate.

Replace the timer.

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.

Содержание CE2813NR

Страница 1: ...ENTS MICROWAVE OVEN 1 Precaution 2 Specifications 3 Operating Instructions 4 Disassembly and Reassembly 5 Alignment and Adjustments 6 Troubleshooting 7 Exploded Views and Parts List 8 Schematic Diagrams Manual CE2813NR SRSC SALSC ...

Страница 2: ...s and latches 5 evidence of dropping or abuse c Before turning on microwave power for any service 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 s...

Страница 3: ...hould 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...

Страница 4: ...igure 1 1 2 The high voltage capacitor remains charged about 30 seconds after disconnection Short the negative 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 PRECAUTIO...

Страница 5: ...NETRON COOLING METHOD OUTSIDE DIMENSIONS SHIPPING DIMENSIONS OVEN DIMENSIONS SHIPPING WEIGHT APPROX 60 MINUTES 230V 50Hz AC MICROWAVE 1 300W GRILL 1100W FROM 100 TO 850W IEC 705 TEST PROCEDURE 2 450MHz OM75P 31 ESS COOLING FAN MOTOR 489 W x 275 H x 379 D 557 W x 329 H x 403 D 306 W x 211 H x 320 D NET 14 5kg GROSS 16 0kg ...

Страница 6: ...mm 489mm 342mm DEFROST INSTANT REHEAT CE2813NR 100 300 450 600 700 850W 0 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 VENTILATION HOLES GRILL LIGHT VARIABLE COOKING POWER CONTROL KNOB TIMER KNOB COUPLER DOOR DOOR LATCHES OPEN DOOR PUSH BUTTON METAL RACK SAFETY INTERLOCK HOLES ROLLER RING TURNTABLE ...

Страница 7: ... 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 4 2 Replacement of High Voltage Transformer 1 Discharge the high voltage capacitor 2 Disconnect all the leads 3 Remove the mounting bolts 4 Reconnect the leads correctly and firmly PRECAUTION Serviceme...

Страница 8: ...l when handling Door C because it is fragile Then remove the door assembly 4 3 3 Removal of Door E 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 spring from Door E and key d...

Страница 9: ...rate properly check if any other part such as the control circuit board blower motor or high voltage transformer is defective 4 5 Replacement of Drive Motor 1 Take out the glass tray guide roller and coupler from cavity 2 Turn the oven upside down to replace the drive motor 3 Remove a screw securing the drive motor cover 4 Disconnect all the lead wires from the drive motor 5 Remove screws securing...

Страница 10: ...4 6 1 Removal of Control Box Assembly 1 Disconnect the connectors from the control box assembly 2 Remove screws securing the control box assembly 3 Remove the knobs of the control box A ssy 4 Remove the screw securing the timer SCREWS CONTROL BOX ...

Страница 11: ...k across the magnetron filament terminals should indicate one ohm or less 4 A continuity check between each filament terminal and magnetron case should read open Primary Terminals Filament Terminals Secondary Terminal Magnetron Antenna Gasket Plate Cooling Fins PRECAUTION 1 High voltage is present at the high voltage terminals during any cook cycle 2 It is neither necessary nor advisable to attemp...

Страница 12: ...dy consult the figure 2 No specific adjustment during installation of Primary switch and Monitor switch to the latch body is necessary 3 When mounting the Latch Body to the 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 complet...

Страница 13: ...edure will cause a variance in the temperature rise Additional power test should be made if temperature rise is marginal NOTE 2 Output power in watts is computed by multiplying the temperature rise step 5 by a factor of 91 times the of centigrade temperature 5 8 Microwave Heat Distribution Heat Evenness The microwave heat distribution can be checked indirectly by measuring the water temperature ri...

Страница 14: ...n at the highest power level 4 Set survey meter dual ranges to 2 450MHz 5 Using the survey meter and spacer cone as described above measure near the opening of magnetron the surface of the air guide and the surface of the wave guide as shown in the following photo but avoid the high voltage components The reading should be less than 4mW cm 2 5 11 Note on Measurement 1 Do not exceed the limited sca...

Страница 15: ...ns secondary open the transformer may be faulty Replace H V Transformer Oven lamp does not light 1 Fuse blown out Check fuse Replace the fuse 2 Poor contact of power cord Check continuity of power supply cord Also check whether the power cord is securely wired Adjust or replace the power supply cord 3 Defective lamp The fan motor rotates but lamp does not light Replace the lamp 4 Defective timer c...

Страница 16: ...ell to the door hinge Fasten or tighten Timer does not operate 1 Defective timer motor If the timer does not operate with 230V applied to the terminals the timer motor amy be faulty Replace timer 2 Defective contacts of timer S W The lamp does not light Replace timer Cooking tray does not rotate 1 Defective drive motor Check to see if 230V exists at the motor terminals If so motor will be defectiv...

Страница 17: ...N and OFF repeatedly Replace or adjust 6 Open coil of H V Trans former Check the continuity of primary coil and secondary coil If there is no continuity H V Transformer is defective Replace the H V Transformer 7 Shorted H V capacitor Check the continuity of capacitor If the capacitor shorts the fuse blows Replace the H V Capacitor 8 Monitor fuse blown out Check the monitor fuse on the noise filter...

Страница 18: ...22 MM16 MC01 MC05 MC04 MC09 MC03 MC12 MC08 MM29 MM30 MM31 MM06 MM171 MM05 MM551 MM55 MM26 MM61 MM68 MM57 MM60 MM17 MM08 MM09 MM07 MM25 MM59 MM21 MM18 MM19 MM20 MM64 MM03 MM32 MM10 MD01 MM109 MM88 MD10 MD02 MD03 MD04 MD05 MD24 MD06 MD07 MD09 MD08 MM14 MM27 MM28 MB01 MB05 MB03 MB04 MB02 MM67 ...

Страница 19: ... 187Y 250V7 5A 120 1 CAV TCO MM18 DE74 20102B TRAY COOKING GLASS T5 0 M745 1 MM19 DE97 00193B ASSY GUIDE ROLLER NC2000 0 6 T2 P1198 14PI 1 MM20 DE67 00140A COUPLER NC2000 0 6 0 8 PPS ESS840 3G BRN NEW 1 MM21 DE39 10109A WIRE HARNESS E 230V50HZ M9G45 CTW 1 MM22 DE31 10154A MOTOR SYNCHRONOUS M2HJ49ZR02 ST 16 50 60HZ 1 MM25 DE65 20014A CABLE CLAMP NY 66 DA 6N 1 P CORD MM26 DE71 00148A COVER BLOWER MW...

Страница 20: ...Z CE2813NR BWT PURE WHT 1 MD01 DE94 00289V ASSY DOOR CE2813NR CE2833NR BWT P WHT CIS 1 MD02 DE64 40322Y DOOR A ABS P WHT M1733R BWT TDS S S 1 MD03 DE67 20186A SCREEN DOOR SAN T2 2 W354 L224 SMOG 3RD 0 7CU FT 1 MD04 DE92 50133F ASSY DOOR E CE2733 3RD 0 7 BLK CAOTING 2ND HINGE 1 MD05 DE01 00112B FILM DOOR 1 MD06 DE64 40008B DOOR C PP T1 5 BLK CE745G 1 MD07 DE61 00198A SPRING KEY M1877 HSWR D6 23 1 4...

Страница 21: ...OOTHED 1 COVER AIR DE60 10082H SCREW A 2S 4X12 TOOTHED 4 OUT PANEL DE60 10098A SCREW ASSY TAP TITE GLD SWRCH18A ZPC2 PH TC M4X8 WT 1 CVT TCO DE60 10098A SCREW ASSY TAP TITE GLD SWRCH18A ZPC2 PH TC M4X8 WT 1 D MOTOR DE60 10098A SCREW ASSY TAP TITE GLD SWRCH18A ZPC2 PH TC M4X8 WT 2 MGT TCO DE60 10122A SCREW TAP TH FE FN TAP TH 2 4X8 1 C CEIL DE60 10122A SCREW TAP TH FE FN TAP TH 2 4X8 1 P OUTER DE60...

Страница 22: ...MBOL COLOR BRN BROWN BLK BLACK RED RED BLU BLUE BLK BLU HIGH VOLTAGE TRANSFORMER HIGH VOLTAGE CAPACITOR HIGH VOLTAGE DIODE TO CHASSIS H V FUSE CONDITION OF OVEN DOOR IS OPENED BRN BROWN WHT WHITE RED RED BLK BLACK Y G YELLOW GREEN BLU BLUE ORG ORANGE YEL YELLOW COOK OFF WIRING COLOR ...

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