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Parts

Cause

Diagnosis

Remedy

Fuse blows

Defective primary

Check continuity of the primary switch terminals with

Replace the primary

out when

interlock switch

wire removed using a multimeter. If there is continuity

interlock switch

door is

ary winding.

between switch terminals when door is opened,

opened.

the switch is defective.

Defective interlock

Check continuity of the monitor switch terminals

Replace the interlock

monitor switch

with wire removed by using a multimeter.

monitor switch

If there is continuity between switch terminals
when the door is closed, the switch is defective.

Fuse is

Layer short of the

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

Replace H. V. Transformer

open.

secondary coil of

few seconds, then there is a layer short.

H. V. Transformer

If the fuse blows with H. V. Trans secondary open, the
transformer may be faulty.

1) Fuse blown out

Check fuse.

Replace the fuse.

2) Poor contact of

Check continuity of power supply cord. Also check

Adjust or replace the

power cord

whether the power cord is securely wired.

power supply cord.

3) Defective lamp

The fan motor rotates, but lamp does not light.

Replace the lamp.

Oven lamp

4) Defective timer

Check the terminals of timer for continuity,

Replace the timer.

does not

contacts

turning the timer knob ON and OFF repeatedly.

light.

5) Thermal cutout

In this case the oven lamp and fan do not

Replace the

S/W open

turn on

thermal cutout S/W

1) Defective

If 220~230V is found at motor terminals, the motor

Replace the motor.

Fan does

fan motor.

should be replaced.

not operate.

2) Defective con-

The oven lamp does not light and fan motor

Replace the timer.

tacts of timer

does not operate.

NOTE

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

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.

6-1 Electrical Malfunction

6. Troubleshooting

Samsung Electronics

6-1

Содержание M736

Страница 1: ...CONTENTS 800w M736 120w 240w 400w 560w 0 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 1 Precaution 2 Statements 3 Operating Instructions 4 Disassembly and Reassembly 5 Alignment and Adjustments 6 Troubleshooting 7 Exploded Views and Parts List 8 Wiring Diagrams ...

Страница 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...

Страница 3: ...es 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 about 30 seconds after disconnection Short the negative terminal of the high voltage capacitor to to the oven chassis Use a screwdrive...

Страница 4: ...SOURCE 230V 50Hz AC POWER CONSUMPTION 1300W OUTPUT POWER FROM120W TO 800W 9 LEVEL POWER IEC 705 TEST PROCEDURE OPERATING FREQUENCY 2450MHz TIMER 60 MINUTES COOLING METHOD COOLING FAN MOTOR MAGNETRON OM75S 31 OUTSIDE DIMENSIONS 489 W x 275 H x 344 D mm SHIPPING WEIGHT APPROX 14 5 Kg ...

Страница 5: ...3 Operating Instructions 3 1 Control Panel Samsung Electronics 3 1 800w M736 120w 240w 400w 560w 0 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 DEFROST INSTANT REHEAT OPEN DOOR PUSH BUTTON ...

Страница 6: ...mum by turning COOKING POWER CONTROL knob 3 Set the time to 4 to 5 minutes by turing TIMER knob Important If any problem is experienced in the operation of the oven please refer to the section on page 4 what to do if you are in doubt or have a problem Operating Instruction 3 3 Checking That Your Oven is Operating Correctly 3 2 Features External Views TIMER KNOB SAFETY INTERLOCK HOLES LIGHT VARIABL...

Страница 7: ...RM 15 120W 3 5 Adjusting the Cooking Time During Cooking Stopping the Cooking Adding Extra Time To stop the cooking Press Temporarily Open Door To resume cooking close the door Completely Turn the TIMER knob to O Simply move the timer knob to any increased setting that you require 3 6 Manual Defrosting Food 800w 120w 240w 400w 560w 3 7 Instant Cook Guide 1 Place the food in the oven and close the ...

Страница 8: ...sket 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 Lamp Magnetron H V Trans H V Capacitor Nuts or Screw Thermo S W Fan Motor Supporter MGT P HVT H V Trans Screws 4 Disassembly Reassembly Samsung Electronics 4 1 PRECAUTION There exists HIGH...

Страница 9: ...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 spring from Door E and key door 4 3 2 Removal of Door C 4 3 3 Remo...

Страница 10: ...unt 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 Samsung Electronics 4 3 Disassembly ReaAssembly Screw Drive Motor Cover Base Plate Drive Motor 4 3 5 Reassembly Test After replacement of the defective comp...

Страница 11: ...ty check across the magnetron filament terminals should indicate one ohm or less 4 A continuity check between each filament terminal and the magnetron case should read open Magnetron Antenna Gasket Plate Cooling Fins 5 Alignment and Adjustments Samsung Electronics 5 1 PRECAUTION 1 High voltage is present at the high voltage terminal of the high voltage transformer during any cook cycle 2 It is nei...

Страница 12: ...rlock switches and the interlock monitor switch all together Then follow the adjustment procedures below After repair and adjustment be sure to check the continuity of all interlock switches and the interlock monitor switch Alignment and Adjustments 5 3 High Voltage Capacitor 1 Check continuity of the capacitor with meter set at the highest ohm scale 2 Once the capacitor is charged a normal capaci...

Страница 13: ...mal 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 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 E by a power factor of 91 in case of centigrade temperature 5 7 Microwave Heat Distribution He...

Страница 14: ... measurement 1 After adjustment and repair 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 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 th...

Страница 15: ...heck continuity of power supply cord Also check Adjust or replace the power cord whether the power cord is securely wired power supply cord 3 Defective lamp The fan motor rotates but lamp does not light Replace the lamp Oven lamp 4 Defective timer Check the terminals of timer for continuity Replace the timer does not contacts turning the timer knob ON and OFF repeatedly light 5 Thermal cutout In t...

Страница 16: ...he timer does not operate with 220 230V applied to the Replace timer Timer does timer motor terminals the timer motor amy be faulty not operate 2 Defective The lamp does not light Replace timer contacts of timer S W Cooking tray 1 Defective Check to see if 21A exists at the motor terminals Replace drive motor does not drive motor If so motor will be defective rotate 1 Blocking of Check if the air ...

Страница 17: ...imary coil and secondary Replace the H V Trans coil If there is no continuity H V Transformer is H V Transformer former defective 7 Shorted H V Check the continuity of capacitor Replace the capacitor If the capacitor shorts the fuse blows H V Capacitor 8 Monitor fuse Check the monitor fuse Replace the blown out on the noise filter Monitor fuse 6 2 Unsatisfactory Cooking Symptom Related Parts Check...

Страница 18: ...d Parts List 7 1 Main Exploded View Samsung Electronics 7 1 M1 M2 M3 M4 M5 M6 M7 M8 M13 M12 M9 B2 B3 B4 B1 M10 M21 M23 M24 M25 M26 M27 M28 M29 M30 M31 M15 M17 M16 M19 M18 M14 M22 M20 D3 D2 D1 D7 D4 D5 D6 C6 C5 C4 C2 C3 C1 ...

Страница 19: ... MW5630T 1 M 15 DE26 10121B TRANS H V SHV 745EC1 230V 2230V 3 35V 50 1 M 16 DE61 50106A BRACKET HVC SECC T0 8 W31 L125 8 1 M 17 2501 001036 C OIL 950nF 2100V BK 35x54x85 20mm 1 M 18 DE59 40001A DIODE H V HVR 1X 32B 12 1 M 19 DE91 70061B ASSY H V FUSE THV060T 0750 H 5KV 0 75A RED 1 M 20 DE61 40017A FOOT PP A353 BLK MW5630T 2 M 21 DE31 10154A MOTOR DRIVE M2HJ49ZR02 ST 16 1V 5 6 1 M 22 DE80 10003A BA...

Страница 20: ...Ref No Parts No Description Specification Q ty Remarks C 1 DE66 20010E BUTTON PUSH ABS HR 0370D WHT W9501 17 6G 1 C 2 DE61 70076A SPRING BUTTON HSWR PI0 6 1 C 3 DE64 10146A KNOB ABS WHT 5G NEW NEWGUAD 2 C 4 DE72 70163D CONTROL PANEL ABS HR 0370U W9501 PURE WHT 1 C 5 DE45 10074A TIMER ASSY TMFK60MTAL 220 240V 50HZ CMO TYP 1 C 6 3501 000309 RELAY POWER CHP11 A240S 250V15A 240V 3750VA 1 7 4 Assembly ...

Страница 21: ...080A SCREW WASHER M5 L12 2S 4 MGT DE60 10080A SCREW WASHER M5 L12 2S 4 TNS HV DE60 10082A SCREW A M4 L12 2S THOOTHED 5 B PLTE DE60 10082A SCREW A M4 L12 2S THOOTHED 2 BD LAT DE60 10082A SCREW A M4 L12 2S THOOTHED 1 CV AIR DE60 10082A SCREW A M4 L12 2S THOOTHED 2 MO FAN DE60 10082A SCREW A M4 L12 2S THOOTHED 4 PN OUT DE60 10098A SCREW ASSY TAPTITE PH TC M4X8 SWRCH18A ZPC2 1 B HVC DE60 10098A SCREW ...

Страница 22: ...H S W MONITOR LATCH S W 1 0mH NO NO NO NO COM COM BRN WHT BRN BLU ORG BLK BRN WHT BLU ORG BRN COM BRN 230V OV 21V BRN BRN BRN BRN BLU T C O CAVITY TIMER S W SECONDARY S W INRUSH S W BLU BLU BLU BLU BLK BLU BLU BLU ORG ORG ORG WHT WHT WHT WHT PRIMARY S W T C O MGT V P C S W NOISE FILTER NOTE 0 95uF RED RED BRN BLU FA F HIGH VOLTAGE TRANSFORMER H V FUSE HIGH VOLTAGE CAPACITOR HIGH VOLTAGE DIODE TO C...

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