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Samsung Electronics

6-1

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

Содержание M735

Страница 1: ...NTENTS 400 560 120 M735 800W 1 2 3 4 5 6 7 8 9 10 20 30 40 60 0 50 250 1 Precaution 2 Specifications 3 Operating Instructions 4 Disassembly and Reassembly 5 Alignment and Adjustments 6 Troubleshooting 7 Exploded Views and Parts List 8 Wiring Diagram NSI ...

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: ...230V 50Hz SINGLE PHASE POWER CONSUMPTION 1300W OUTPUT POWER 120W 800W OPERATING FREQUENCY 2450MHz TIMER 60 MINUTES COOLING METHOD AIR COOLING MAGNETRON OM75SH 31 ESST OUTSIDE DIMENSIONS 489 W x 356 D x 275 H mm OVEN CAVITY DIMENSIONS 306 W x 322 D x201 H mm SHIPPING WEIGHT APPROX 14 5 Kg ...

Страница 5: ...3 Operating Instructions 3 1 Control Panel Samsung Electronics 3 1 400 560 120 M735 800W 1 2 3 4 5 6 7 8 9 10 20 30 40 60 0 50 240 ...

Страница 6: ...er level to 100 maximum 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 Door VentilationSlot Light ...

Страница 7: ...5 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 400 560 120 800W 240 3 7 Instant Cook Guide 1 Place the food in the oven and close the door 2 T...

Страница 8: ... 9 Remove the oven lamp by rotating to pull out from hole of air cover NOTE1 When removing the magnetron make sure that its antenna 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 Re...

Страница 9: ...crewdriver into the gap between Door E and Door C to remove 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...

Страница 10: ...ve motor be sure to remount 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 Disassembly ReaAssembly Screw Drive Motor Cover Base Plate Drive Motor 4 3 5 Reassembly Test After replacement of the defective component parts of the door reassemble it and follow the in...

Страница 11: ...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 Cooling Fins Gasket Plate 5 Alignment and Adjustments 5 1 High Voltage Transformer 5 2 Magnetron PRECAUTION 1 High voltage is present at the high voltage terminal of the high voltage transformer during any cook cycle 2 It is neit...

Страница 12: ... 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 Door Open Door Closed Primary switch 0 Monitor switch COM NC 0 Monitor switch COM NO 0 Secondary switch 0 Alignment and Adjustments 5 3 High Voltage Capacitor 1 Isolate the diode from the ci...

Страница 13: ...nd time tests with accurate equipment 1 Fill the one liter glass vessel with one liter of water 2 Stir water in glass vessel with thermometer and record glass vessel s temperature as T1 10 1ûC 3 After moving the water into another glass vessel place it on the center of the cooking tray Set the oven to high power and operate for 52 3 seconds exactly 2 seconds included as a holding time of magnetron...

Страница 14: ... 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 checked for accuracy by its manu...

Страница 15: ...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 lig...

Страница 16: ...e screw 1 Defective If the 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 21V exists at the motor terminals Replace drive motor does not drive motor If so motor will be defective rotate 1 Block...

Страница 17: ...eck the continuity of primary 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 Sym...

Страница 18: ...ploded Views and Parts List 7 1 Main Exploded View 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 D8 D4 D5 D9 D10 D6 C6 C5 C4 C7 C2 C3 C1 M32 ...

Страница 19: ... 10121B TRANS H V SHV 745EC1 230V 50HZ KEC 2230V 1 M16 DE61 50106A BRACKET HVC SECC T0 8 W31 L125 8 1 M17 2501 001016 C OIL 950nF 2 1KV BK 35x54x80 20mm 1 M18 DE91 70063A ASSY HVD V2M6 PI9 0 0 05MT 1 M19 DE91 70061B ASSY H V FUSE THV060T 0750 H 5KV0 75A RED 1 M20 DE61 40017A FOOT PP A353 BLK MW5630T 2 M21 DE31 10154A MOTOR DRIVE M2HJ49ZR02 ST 16 21V 05ø 06 œ 1 M22 DE80 10003A BASE PLATE SGCC1 Z T0...

Страница 20: ...COATIN M745 1 7 3 Assembly Door Parts List Exploded Views and Parts List Ref No Parts No Description Specification Q ty Remarks C 1 DE66 20006A BUTTON PUSH RESIN ABS HR 0370U P WHT M945 1 C 2 DE61 70076A SPRING BUTTON HSWR PI0 6 1 C 3 DE64 10123A KNOB PURE WHT M97G35 2 C 4 DE72 70006A CONTROL PANEL ABS WHT M735 SAW 1 C 5 DE45 10074A TIMER ASSY TMFK60MTAL 220 240V 50HZ CMO TYP 1 C 6 3501 000309 REL...

Страница 21: ...82H SCREW A 2S 4X12 TOOTHED 2 BD LAT DE60 10082H SCREW A 2S 4X12 TOOTHED 2 CN BOX DE60 10082H SCREW A 2S 4X12 TOOTHED 1 CV AIR DE60 10082H SCREW A 2S 4X12 TOOTHED 2 MO FAN DE60 10082H SCREW A 2S 4X12 TOOTHED 5 PN OUT DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 CV TCO DE60 10098A SCREW ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 2 M DRIV DE60 10098A SCREW ASSY TAP TITE PH TC M...

Страница 22: ...H S W MONITOR LATCH S W 1 0mH NO NO NO NO COM COM BRN ORG ORG BLK BRN BLU BLU ORG BRN COM BRN 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 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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