Sanyo EM-C1800MK Service Manual Download Page 22 | Manualshive

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Summary of Contents for EM-C1800MK

Page 1: ...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...

Page 2: ...o CHECKOUT PROCEDURE FOR SWITCHES on page 6 5 Make sure the interlock monitor switch opens be fore the primary interlock switch closes when the door is closed very slowly according to CHECK OUT PROCEDURE FOR SWITCHES on page 7 CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT BE EXPLOSED TO THE MICROWAVE ENERGY WHICH MAY RADIATE FROM THE MAGNETRON OR OTHER MICROWAVE GENE RATING DEVICE IF IT IS IMPR...

Page 3: ...isten for the clicking sound from switches make sure the interlock monitor switch is closed after the latch interlock switch is open when the door is opened See pages 1 and 8 b Make sure the perforated screen and the choke dielectric of the door are correctly mounted 2 After the power is applied a Open and close the door to see if the interlock mechanism operates properly b Check microwave energy ...

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Page 5: ... filament terminal of the magnetron and the chassis ground with an ohm meter on highest scale COMPONENT MAGNETRON HIGH VOLTAGE TRANSFORMER 1 Measure the resistance With an ohm meter on R x1 scale a Primary winding b Filament winding c Secondary winding 2 Measure the resistance with an ohm meter on highest scale a Primary winding to ground b Filament winding to ground CHECKOUTPROCEDURE RESULT Norma...

Page 6: ...bout the middle position in one direct forward and infinite ohms in the reverse direction using meter with a 9 volt battery NOTE Some digital meter may show over even in a forward direction because low mea suring voltage of meter does not allow the meter to pass through the high volt age diode Abnormal reading Indicates continuity or infinite ohms in both directions FUSE DIODE Measure the resistan...

Page 7: ...he connector S104 and S105 from the power circuit board c Plug the power supply cord d And then measure each voltage COMPONENT POWER P C B CONTROL P C B Measure the voltage Between test points TP 1 TP 2 TP 3 and ground See figure 14 on page 23 Note Proceed with the check of the control P C B to see if any one of the measured values is differ ent from the specified values CHECKOUTPROCEDURE RESULT N...

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Page 9: ...uity Replace Control circuit board See page 6 Voltage incorrect Replace Control circuit board See page 6 Voltage incorrect Replace H V Transformer See page 4 Resistance incorrect Replace H V Capacitor See page 5 Resistance incorrect Replace Magnetron See page 4 Resistance incorrect Replace Monitor switch See page 7 Contact on No continuity Replaceor Adjust Blower motor Shorted Replace Step down Tr...

Page 10: ...lf diagnosis functions Display shows E depending on the trouble CONDITION TROUBLE CHECK RESULT REMEDY Shorted Replace H VTransformer Shorted Replace H V Capacitor Shorted Replace Magnetron Shorted Replace H V Diode Shorted Replace Fuse Diode Poor oscillation Replace Magnetron Low microwave output Rotation stop Repair or replace Rotation of top or bottom anttena Uneven heating U 10 Thermistor for M...

Page 11: ...check the microwave en ergy leakage according to 1 ADJUSTMENT PROCE DURE FOR SWITCHES on page 1 when the primary interlock switch the relay 3 and 4 or the interlock moni tor switch is adjusted or replaced If the primary interlock switch the relay 3 and 4 or the interlock monitor switch operate properly deter mine which of the followings is defective control cir cuit board blower motor gear motor h...

Page 12: ...rlock monitor swich operate normally See pages 1 and 7 After replacing the door check for microwave ene rgy leakage with a leakage detector Microwave energy leakage must be below the limit of 5mW c u I HOW TO RESET THE MEMORY OF ACCUMU LATIVE COOKING TIME 1 Push the keys step by step as follows Turn the Timer Knob to left until display shows 0 Touch START key first and also touch POWER SELLECTION ...

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Page 14: ...EXPLODED VIEW AND PARTS LIST Main body Parts 1 Parts marked with this sign have special Characterstics important for microwave leakage When replacing any of these parts use only Manufacturers specified parts ...

Page 15: ...ith this sign have special Characterstics important for microwave leakage When replacing any of these parts use only Manufacturers specified parts Parts marked with this sign are supplied with high voltage exceeding 250V ...

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Page 17: ... marked with this sign are supplied with high voltage exceeding 250V Parts marked with this sign have special Characterstics important for microwave leakage When replacing any of these parts use only Manufacturers specified parts ...

Page 18: ...ith this sign are supplied with high voltage exceeding 250V Parts marked with this sign have special Characterstics important for microwave leakage When replacing any of these parts use only Manufacturers specified parts ...

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