Samsung M945CE Specifications

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Samsung M945CE Specifications | Manualzz

MICROWAVE OVEN

M945CE

SERVICE Manual

MICROWAVE OVEN

1. Precaution

CONTENTS

2. Specifications

3. Operating Instructions

4. Disassembly and Reassembly

5. Alignment and Adjustments

6. Troubleshooting

7. Exploded Views and Parts List

8. PCB Diagrams

9. Schematic Diagrams

SEAU

1. Precaution

Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use, repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as potentially lethal high voltages and currents.

1-1 Safety precautions ( )

1. All repairs should be done in accordance with the procedures described in this manual. This product complies with

Federal Performance Standard 21 CFR

Subchapter J (DHHS).

2. Microwave emission check should be performed to prior to servicing if the oven is operative.

3. If the oven operates with the door open :

Instruct the user not to operate the oven and contact the manufacturer and the center for devices and radiological health immediatly.

4. Notify the Central Service Center if the microwave leakage exceeds 5 mW/cm 2

5. Check all grounds.

6. Do not power the MWO from a "2-prong"

AC cord. Be sure that all of the built-in protective devices are replaced. Restore any missing protective shields.

7. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including: nonmetallic control knobs and compartment covers.

8. Make sure that there are no cabinet openings through which people--particularly children--might insert objects and contact dangerous voltages. Examples: Lamp hole, ventilation slots.

9. Inform the manufacturer of any oven found to have emmission in excess of 5 mW/cm 2 ,

Make repairs to bring the unit into compliance at no cost to owner and try to determine cause.

Instruct owner not to use oven until it has been brought into compliance.

CENTRAL SERVICE CENTER

10. Service technicians should 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 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 Warning:

Use exact replacement parts only, i.e., only those that are specified in the drawings and parts lists of this manual.

This is especially important for the

Interlock switches, described above.

Never alter or add to the mechanical or electrical design of the MWO. Any design changes or additions will void the manufacturer's warranty.10.Always unplug the unit's AC power cord from the AC power source before attempting to remove or reinstall any component or assembly.

14. Never defeat any of the B+ voltage interlocks. Do not apply AC power to the unit (or any of its assemblies) unless all solid-state heat sinks are correctly installed.

15. Some semiconductor ("solid state") devices are easily damaged by static electricity. Such components are called Electrostatically

Sensitive Devices (ESDs). Examples include integrated circuits and field-effect transistors.

Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground.

16. Always connect a test instrument's ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument's ground lead last.

Samsung Electronics 1-1

Pretaution

1-2 Special Servicing Precautions (Continued)

17. When checking the continuity of the witches or transformer, always make sure that the power is OFF, and one of the lead wires is disconnected.

18. Components that are critical for safety are indicated in the circuit diagram by shading, or .

19. Use replacement components that have the same ratings, especially for flame resistance and dielectric strength specifications. A replacement part that does not have the same safety characteristics as the original might create shock, fire or other hazards.

1-3 Special High Voltage Precautions

1. High Voltage Warning

Do not attempt to measureany of the high voltages--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 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.

Fig. 1-1. Discharging the High Voltage Capacitor

1-2 Samsung Electronics

2. Specifications

2-1 Table of Specifications

TIMER

POWER SOURCE

99 MINUTES 90 SECONDS

240V 50Hz, AC

POWER CONSUMPTION MICROWAVE : 1,550W

OUTPUT POWER FROM 100 TO 1000W (10 LEVEL POWER)

(IEC-705 TEST PROCEDURE)

OPERATING FREQUENCY 2,450MHz

MAGNETRON

COOLING METHOD

OUTSIDE DIMENSIONS

OM75PH(31)

COOLING FAN MOTOR

517(W) x 297(H) x 385(D)

POWER LEVEL

% M945CE

10% 100W

20% 200W

30% 300W

40%

50%

400W

500W

60%

70%

80%

600W

700W

800W

90% 900W

100% 1000W

ON TIME OFF TIME

4 sec

7 sec

10 sec

13 sec

16 sec

19 sec

22 sec

25 sec

28 sec

30 sec

26 sec

23 sec

20 sec

17 sec

14 sec

11 sec

8 sec

5 sec

2 sec

0 sec

2-2 Comparison Chart

FEATURE

MORE/LESS

AUTO COOK/DISH

AUTO DEFROST

TIME COOK

POWER LEVEL

INSTANT COOK

MEMORY

BOOST

CHILD LOCK

CLOCK

GRILL

COMBI

MODEL

M945CE

O

O

O

O

-

-

O

O

O

O

O

O

Samsung Electronics 2-1

3. Operating Instructions

3-1 Control Panel

Instant Cook Button

Plated meals

Drinks Soup~

Sauce

Casserole~

Stew Pasta & sauce

Chicken

& rice

Auto Cook Button

Weight Entering Button

Power Level Selection Button

Cooking Timer/

StandingTime Button

Auto Defrost Auto Cook kg~lbs.

g~oz.

More~

Less

Clock

Hold~

Timer

Power levels

Memory

10 min~ hours

1 min~ min portion~

10 s

Auto Defrost Button

More/Less Button

Clock Setting Button

Memory Button

Timer Setting Button

Stop/Clear Button

3-2 Features & External Views

Door Ventilation Holes

Stop~Cancel Start~1min+

M945CE

Standard Boost Button

Heater Light

Safety Interlock Holes

Door Latches

Control Panel

Open Door Push Button

Glass Plate Guide Roller

Samsung Electronics

517mm

385mm

3-1

4. Disassembly and Reassembly

4-1 Replacement of Magnetron, Motor Assembly and Lamp

Remove the magnetron including the shield case, permanent magnet, choke coils and capacitors (all of which are contained in one assembly).

1. Disconnect all lead wires from the magnetron and lamp.

2. Remove a screw securing the magnetron supporter.

3. Remove the thrmo S/W.

4. Remove the air cover.

5. Remove screws securing the magnetron to the wave guide.

6. Take out the magnetron very carefully.

7. Remove screws from the back panel.

8. Take out the fan motor.

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.

Lamp

Cover Air Thermo S/W

Fan Motor

Magnetron

H. V. Trans

H. V. Capacitor

Screw

4-1 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

Servicemen should remov their watches whenever working close to or replacing the magnetron.

PRECAUTION

There exists HIGH VOLTAGE ELECTRICITY with high current capabilities in the circuits of the HIGH

VOLTAGE TRANSFORMER secondary and filament terminals. It is extremely dangerous to work on or near these circuits with the oven energized.

DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron.

Screws

H. V. Trans

Samsung Electronics 4-1

Disassembly and Reassembly

4-3 Replacement of Door Assembly

4-3-1 Removal of Door Assembly

Remove hex bolts securing the upper hinge and lower hinge. Then remove the door assembly.

Screws

Upper Hinge

4-3-2 Removal of Door "C"

Insert flat screwdriver into the gap between Door

"E" and Door "C" to remove Door "C". Be careful when handling Door "C" because it is fragile.

Lower Hinge

Screws

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 door.

4-2

Door "E"

Key Door Spring

Samsung Electronics

Disassembly and Reassembly

4-3-5 Reassembly Test

After replacement of the defective component parts of the door, reassemble it and follow the instructions below for proper installation and adjustment so as to prevent an excessive microwave leakage.

1. When mounting the door to the oven, be sure to adjust the door parallel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment.

2. Adjust so that the door has no play between the inner door surface and oven front surface. If the door assembly is not mounted properly, microwave energy may leak from the space between the door and oven.

3. Do the microwave leakage test.

4-4 Replacement of Fuse

1. Disconnect the oven from the power source.

2. Remove the 10A fuse in the fuse holder.

3. When replacing the 10A fuse, be sure to use an exact replacement part. If new 10A fuse blows out again after replacement, check the primary interlock switch, door sensing switch and interlock monitor switch.

4. When the above three switches operate 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 the drive motor to the cavity.

6. Remove the drive motor.

7. When replacing the drive 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.

Samsung Electronics

Screw

Drive Motor

Drive Motor Cover

Base Plate

4-3

Disassembly and Reassembly

4-6 Replacement of Control Circuit Board

4-6-1 Removal of Ass'y Control Box

1. Be sure to ground any static electric charge in your body and never touch the touch control circuitry.

2. Disconnect the connectors from the control circuit board.

3. Remove screws securing the control box assembly.

4. Remove the screw securing the ground tail of the keyboard.

4-6-2 Remonal of Ass'y P.C.B

1. Pull the lever end of the plastic fastener and remove the Flexible Printed Circuit(FPC) of membrane panel.

2. Remove screws securing the control circuit board.

3. Lift up the control circuit board from the Ass'y control box.

4. When reconnecting the FPC connector, make sure that the holes on the connector are properly engaged with the hooks on the Plastic Fastener.

Control Box

FPC Connector

4-6-3 Removal of Window Display & Membrane Panel

1. Window display should not be disassembled as its mounting tabs will be broken. If repair work is difficult, replace with Ass'y control panel.

2. The membrane key board is attached to the escutcheon base with doublefaced adhesive tape. Therefore, applying hot air such as using of hair dryer is recommended for smoother removal.

3. When installing new membrane key board, make sure that the surface of escutcheon base is cleaned sufficiently so that any problems

(shorted contacts or uneven surface) can be avoided.

Window

Display

Membrane

Panel

4-4

Screw

Screw

Samsung Electronics

5. Alignment and Adjustments

PRECAUTION

1. High voltage is present at the high voltage terminals during any cook cycle.

2. It is neither necessary nor advisable to attempt measurement of the high voltage.

3. Before touching any oven components or wiring, always unplug the oven from its power source and discharge the high voltage capacitor.

5-1 High Voltage Transformer

1. Remove connectors from the transformer terminals and check continuity.

2. Normal resistance readings are as follows:

Secondary

Filament

Primary

(Room temperature = 20ûC)

Approx. 130 W

Approx.0

W

Approx.1.700

W

Filament Terminals

Primary

Terminals

Secondary

Terminal

5-2 Low Voltage Transformer

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 reading is shown in the table.

Terminals

1~2(Input)

3~4(Output 2.9V)

5~6(Output13V)

Resistance

1,000 W

3.947

W

2.117

W

5-3 Magnetron

1. Continuity checks can indicate only an open filament or a shorted magnetron. To diagnose an open filament or shorted magnetron :

2. Isolate the magnetron from the circuit by disconnecting its leads.

3. A continuity check 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.

Magnetron Antenna

Gasket Plate

Cooling Fins

Samsung Electronics 5-1

Alignment and Adjustments

5-4 High Voltage Capacitor

1. Check continuity of the capacitor with the meter set at the highest resistance scale.

2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 9M

W.

3. A shorted capacitor will show continuous continuity.

4. An open capacitor will show constant 9M W.

5. Resistance between each terminal and chassis should read infinite.

5-5 High Voltage Diode

1. Isolate the diode from the circuit by disconnecting its leads.

2. With the ohm-meter set at the highest resistance scale, measure across the diode terminals. Reverse the meter leads and read the resistance. A meter with 6V, 9V or higher voltage batteries should be used to check the front-to back resistance of the diode (otherwise an infinite resistance may be read in both directions). The resistance of a normal diode will be infinite in one direction and several hundred K

W in the other direction.

5-6 Main Relay and Power Control Relay

1. The relays are located on the PCB Ass'y. Isolate them from the main circuit by disconnecting the leads.

2. Operate the microwave oven with a water load in the oven. Set the power level set to high.

3. Check continuity between terminals of the relays after the start pad is pressed.

5-7 Adjustment of Primary Switch, Door Sensing Switch and Monitor Switch

Precaution

For continued protection against radiation hazard, replace parts in accordance with the wiring diagram and be sure to use the correct part number for the following switches: Primary and secondary interlock switches, and the interlock monitor switch

(replace 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.

1. When mounting Primary switch and Interlock

Monitor switch to Latch Body, 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 completed.

Completely tighten the screws holding the Latch

Body to the oven assembly.

4. Reconnect to Monitor switch and check the continuity of the monitor circuit and all latch switches again by following the components test procedures.

5. Confirm that the gap between the switch housing and the switch actuator is no more than

0.5mm when door is closed.

5-2

Body Latch

Primary switch

Monitor switch (COM-NC)

Monitor switch (COM-NO)

Door Sensing S/W

Primary Interlock Switch

Interlock

Monitor

Switch

Door Open

¥

0

Lever Door(B)

Door Sensing

Switch

Door Closed

0

¥

0

0

Samsung Electronics

Alignment and Adjustments

5-8 Output Power of Magnetron

CAUTION

MICROWAVE RADIATION

PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS

CONDUCTING MICROWAVE ENERGY.

The output power of the magnetron can be measured by performing a water temperature rise test.

Equipment needed :

* Two 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm)

* One glass thermometer with mercury column

NOTE: Check line voltage under load. Low voltage will lower the magnetron output. Make all temperature and time tests with accurate equipment.

1. Fill the one liter glass vessel with water.

2. Stir water in glass vessel with thermometer, and record glass vessel's temperature ("T1", 10±1ûC).

3. After moving the water into another glass vessel, place it in the center of the cooking tray. Set the oven to high power and operate for 54 seconds exactly. (2 seconds included as a holding time of magnetron oscillation:)

4. When heating is finished, stir the water again with the thermometer and measure the temperature ("T2").

5. Subtract T1 from T2. This will give you the water temperature rise. ( DT)

6. The output power is obtained by the following formula;

Output Power =

4.187 x 1000 x

DT

42

* Output (W) = 100 x DT

42 : Heating Time (sec)

4.187 : Coefficient for Water

1000 : Water (cc)

DT : Temperature Rise (T2-T1)

7. Normal 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 factor of 91 times the of centigrade temperature.

Samsung Electronics 5-3

Alignment and Adjustments

5-9 Procedure for Measurement of Microwave Energy Leakage

1) Pour 275±15cc of 20±5ûC(68±9ûF) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven.

2) Start to operate the oven and measure the leakage by using a microwave energy survey meter.

3) Set survey meter with 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 of the probe on the door and/or cabinet door seam and move along the seam, the door viewing window and the exhaust openings moving the probe in a clockwise direction at a rate of 1 inch/sec. If the leakage testing of the cabinet door seam is taken near a corner of the door, keep the probe perpendicular to the areas making sure that the probe end at the base of the cone does not get closer than 2 inches to any metal. If it gets closer than 2 inches, erroneous readings may result.

5) Measured leakage must be less than 4mW/cm 2 , after repair or adjustment.

Maximum allowable leakage is 5mW/cm

2

.

4mW/cm

2

is used to allow for measurement and meter accuracy

5-10 Check for Microwave Leakage

1. Remove the outer panel.

2. Pour 275±15cc of 20±5ûC(68±9ûF) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven.

3. Start the oven 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 arnear 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 neading should be less than 4mW/cm 2 .

5-11 Note on Measurement

1) Do not 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.

5-12 Leakage Measuring Procedure

5-13-1 Record keeping and notification after 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/cm 2 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 manufacturer.

Samsung Electronics

6. Troubleshooting

PRECAUTION

1. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE.

2. BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT.

3. DISCHARGE THE HIGH VOLTAGE CAPACITOR.

4. WHEN CHECKING THE CONTINUITY OF THE SWITCHES OR TRANSFORMER, DISCONNECT ONE LEAD WIRE FROM THESE

PARTS AND THEN CHECK CONTINUITY WITHOUT THE POWER SOURCE ON. TO DO OTHERWISE MAY RESULT IN A FALSE

READING OR DAMAGE TO YOUR METER.

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.

6-1 Electrical Maltunction

SYMPTOM CAUSE CORRECTIONS

Oven is dead.

1. Open or loose lead wire harness

Fuse is OK.

2. Open thermal cutout (Magnetron)

No display and no operation at all. 3. Open low voltage transformer

4. Defective Ass'y PCB

Check fan motor when thermal cutout is defective.

Check Ass'y PCB when LVT is defective.

No display and no operation at all. 1. Shorted lead wire harness

Fuse is blown.

2. Defective primary latch switch (NOTE 1)

3. Defective monitor switch (NOTE1)

Check adjustment of primary, interlock monitor, door sensing switch.

4. Shorted HVCapacitor

5. Shorted HVTransformer (NOTE2)

Oven does not accept key input (Program)

Timer starts countdown but no microwave oscillation.

(No heat while oven lamp and fan motor turn on.)

NOTE 1: All of these switches must be replaced at the same time.

(refer to adjustment instructions)

Check continuity of power relay contacts and if it has continuity, replace power relay also.

NOTE 2: When HVTransformer is replaced, check diode and magnetron also.

Refer to operation procedure.

1. Key input is not in-Sequence

2. Open or loose connection of membrane key pad to Ass'y PCB

3. Shorted or open membrane panel

4. Defective Ass'y PCB Replace PCB main.

1. Off-alignment of latch switches

2. Open or loose connection of high voltage circuit especially magnetron filament circuit

NOTE: Large contact resistance will bring lower magnetron filament voltage and cause magnetron to lower output and/or intermittent oscillation.

3. Defective high voltage components

H.V.Transformer

H.V.Capacitor

H.V.Diode, H.V.Fuse

Magnetron

4. Open or loose wiring of power relay

5. Defective primary latch switch

6. Defective power relay or Ass'y PCB

Adjust door and latch switches.

Check high voltage component according to component test procedure and replace if it is defective.

Replace PCB main.

Samsung Electronics 6-1

Troubleshooting

6-1 Electrical Maltunction(continved)

SYMPTOM

Oven lamp and fan motor turn on

Oven can program but timer does not start.

Microwave output is low;.

Oven takes longer time to cook food.

CAUSE

1. Misadjustment or loose wiring of primary latch switch

2. Defective primary latch switch

1. Open or loose wiring of secondary interlock switch

2. Off-alignment of primary interlock

3. Defective secondary interlock S/W

1. Decrease in power source voltage.

2. Open or loose wiring of magnetron filament circuit. (Intermittent oscillation))

3. Aging of magnetron

Loose wiring of door sensing switch

Defective Ass'y PCB

Fan motor turns on when plugged in

Oven does not operate and return to the plugged in mode.

Loud buzzing noise can be heard.

Turntable motor does not rotate.

Oven stops operation during cooking

Sparks

Uneven cooking

1. Loose fan and fan motor

2. Loose screws on H.V.Transformer

3. Shorted H.V.Diode

1. Open or loose wiring of turntable motor.

2. Defective turntable motor.

1. Open or loose wiring of primary interlock switch

2. Operation of thermal cutout(Magnetron)

1. Metallic ware or cooking dishes touching on the oven wall.

2. Ceramic ware trimmed with gold or silver powder also causes sparks.

Uneven intensity of microwave due to its characteristics.

Noise from the turntable motor when it starts to operate.

Noise may result from the motor.

CORRECTIONS

Adjust door and latch switches.

Adjust door and interlock switches.

Consult electrician.

Check wire of door sensing switch.

Replace PCB main.

Tighten screws of fan motor.

Tighten screws of H.V.Transformer.

Replace H.V.Diode.

Replace turntable motor.

Adjust door and latch switches.

Inform the customer.

Do not use any type of cookware with metallic trimming.

Wrap thinner parts of the food with aluminum foil.

Use plastic wrap or cover with a lid.

Stir once or twice while cooking foods such as soup, cocoa, or milk.

Replace turntable motor.

6-2 Samsung Electronics

7. Exploded Views and Parts List

7-1 Exploded Views

D2

D1

D3

D9

D8

M26

C3

C4

C5

C6

C7

C1

C2

D6

D7

D5

D4

D9

M1

M25

M2

M32

M3

M4

M34 M33

M5

M7 M11

M6

M31

M24 M14

M23

M21

M15

M13

B1

M17

B3

B2

M9

M10

M30

M8

B4

M12

M16

M18

M19

M22

M27

M20

M29

M28

Samsung Electronics 7-1

Exploded Views and Parts List

7-2 Main Parts List

Ref. No.

M29

M30

M31

M32

M25

M26

M27

M28

M33

M34

M21

M22

M23

M24

M17

M18

M19

M20

M13

M14

M15

M16

M 9

M10

M11

M12

M 5

M 6

M 7

M 8

M 1

M 2

M 3

M 4

Parts No.

Description/Specification

DE70-30001H PANEL-OUTER;C/STEEL,T0.6,W360,L1128,P/WHT

DE63-90035G CUSHION-RUBBER;DFA20,T2,W190,L100,BLK

DE39-20042B ASSY POWER CORD;KKP-550A/B207,1.0/3C,250V10A,L

DE39-40537A WIRE HARNESS-A;230V50HZ,M945(SAW)

DE91-40093A ASSY NOISE FILTER;SN-E10D,250V,10A

DE31-10156A MOTOR-FAN;SMF-945EA,230/50,2400,M97G45

DE47-20009A THERMOSTAT;PW2N-520PB,160/60,250V/7.5A,H,

DE03-30035A MAGNETRON;OM75PH((31)ESS

DE93-20001C ASSY BODY LATCH;M745(EUW),2ND-W/0.7,NYLON66

4713-001004 LAMP-INCANDESCENT;230V,-,40W,ORG,-,-,25x71mm

DE61-50490A BRACKET-TCO;SECC1,T0.6,34,58

DE71-60016A COVER-AIR;PP,2,WHT,M945/M245

DE73-90027A FERRITE-CORE;NI-ZN,T13.8,W21.0,L28.0,BNF-14

DE66-90013B LEVER-DOOR;NYLON66,(2021SW),NTR,M745(EUW)

DE26-10100C TRANS-H.V;SHV-945EG1-3,240V,2380V/3.20V

DE61-50106A BRACKET-HVC;SECC,T0.8,W31,L125.8

2501-001014 C-OIL;1.05uF,2100V,BK,35X54X85,20mm

DE59-40001A DIODE-H.V;HVR-1X-32B-12

DE91-70061A ASSY-H.V.FUSE;THV060T-0800-H,5KV/0.8A,WHT

DE61-40017A FOOT;PP(A353),BLK,MW5630T

DE31-10154A MOTOR-DRIVE;M2HJ49ZR02,ST-16,50/60HZ

DE80-10001A BASE-PLATE;SGCC,T0.8,345,565

DE47-20173A THERMOSTAT;PW-2N(90/60)30,187Y,250V7.5A,9

DE71-60382A COVER-CEILING;MICASHEET,T0.5,70,133

DE92-40196M ASSY DOOR;M945CE/XSA,P/WHT,SEAU

DE94-00070B ASSY CONTROL-BOX;240V50HZ,M945CE/XSA,P-WHT

DE74-20015B TRAY-COOKING;GLASS,T6.0,PI318,1050G,MW5630T

DE92-90189A ASSY-GUIDE ROLLER;MW5630T,D17.5

DE67-60002A COUPLER;PPS,5GR,BRN,M97G45

DE63-90065N CUSHION-GUIDE;PUT-FOAM,T10,W10,L200,BLK,MW55

DE63-90065O CUSHION-GUIDE;PUT-FOAM,T35,W20,L135,BLK,MW55

DE63-90065O CUSHION-GUIDE;PUT-FOAM,T35,W20,L135,BLK,MW55

3601-000448

3601-001126

FUSE-FERRULE;250V,10A,SLOW-BLOW,CERAMIC,6.3

FUSE-FERRULE;250V,1.6A,QUICK-ACTING,CERAMIC

: Option Parts : Warning

Remarks

PN/OUT

CV/AIR

CV-TCO

CV/AIR

BASE

CAVITY

:Electrostatically Sensitive Devices

Q'ty

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

7-2 Samsung Electronics

Exploded Views and Parts List

7-3 Door Parts List

Ref. No

D 5

D 6

D 7

D 8

D 1

D 2

D 3

D 4

D 9

D10

Parts No.

Description / Specification

DE67-20003W SCREEN-DOOR(B);ACRYL ,T1.5,W107.4,L401.5,WHT,M945CE/XSA,-

DE02-00125A TAPE-DOUBLE FACE;ACRYL,T0.45,W9,WHT,WF103,#4420

DE64-40011A DOOR-A;RESIN-ABS(HR-0370U),T2.5,M945(

DE92-50127H ASSY DOOR-E;COATING,BLACK,T0.8,-,-,-,-

DE64-40012A DOOR-C;RESIN-PP(TB53),T2.0,CE945GF,BL

DE64-40006D DOOR-KEY;NYLON#66,(2021SW),BLK,M945(EUW

DE61-70032A SPRING-KEY;ES,HSWR,PI0.6,D5.4,L25,MW8640T

DE61-80002A HINGE-UPPER;SCP1,T2.3,26,77,ZPC3,WHT,CE945

DE61-80003A HINGE-LOWER;SCP1,T2.3,26,77,ZPC3,WHT,CE945

DE01-00002B FILM-DOOR;PC,T0.15,275,175,MW5574W

Q'ty

1

1

1

1

1

0.58

1

1

1

1

Remarks

DOOR/A

7-4 Control Parts List

Ref. No.

C 5

C 6

C 7

C 1

C 2

C 3

C 4

Parts No.

Description/Specification

DE66-20006E BUTTON-PUSH;ABS(VH-0855),P/WHT,M745(EUW)

DE61-70076A SPRING-BUTTON;HSWR,PI0.6

DE34-00003B SWITCH-MEMBRANE;PET,M945CE/XSA,-,-,-,-,-,SEAU

DE67-40002A WINDOW-DISPLAY;RESIN-ACRYLIC,T2.3,M945(IDEO),

DE72-70007B CONTROL-PANEL;RESIN-ABS,120GR,WHT(VH-0800),M

DE91-10401A ASSY PCB-MAIN;230V50HZ,NS,VFD,M945(EURO)NEW,

DE93-30539F ASSY CONTROL-PANEL;M945(EUW)

Q'ty

1

1

1

1

1

1

1

Remarks

7-5 Body Latch Parts List

Ref. No

B 1

B 2

B 3

B 4

Parts No.

DE66-40001A

3405-000178

3405-000175

DE66-90001A

Description / Specification

LATCH-BODY;POM(F20-02),40GR,NTR

SWITCH-MICRO;250V,15A,200gf,SPST-NO

SWITCH-MICRO;250V,15A,200gf,SPST-NO

LEVER-SWITCH;P.O.M(F20-02),2,6,NTR,2ND-W-P/

Samsung Electronics

Q'ty Remarks

1

1

1

2

7-3

Exploded Views and Parts List

7-6 Standard Parts List

Parts No.

DE60-10012A

DE60-10012A

DE60-10012A

DE60-10033A

DE60-10033A

DE60-10045A

DE60-10080A

DE60-10080A

DE60-10082H

DE60-10082H

DE60-10082H

DE60-10082H

DE60-10082H

DE60-10082H

DE60-10088A

DE60-10098A

DE60-10098A

DE60-10045A

DE60-10098A

DE60-10012A

Description / Specification

SCREW-TAP TITE;TH,+,3,M4,L10,SWR10,ZPC2,TOOTH

SCREW-TAP TITE;TH,+,3,M4,L10,SWR10,ZPC2,TOOTH

SCREW-TAP TITE;TH,+,3,M4,L10,SWR10,ZPC2,TOOTH

SCREW-TH;TH,+,M4,L10,MSWR10,FEFZY

SCREW-TH;TH,+,M4,L10,MSWR10,FEFZY

SCREW-TAP PH;PH,M3,L6,FEFZY

SCREW-WASHER;M5,L12,2S

SCREW-WASHER;M5,L12,2S

SCREW-A;2S-4X12,TOOTHED

SCREW-A;2S-4X12,TOOTHED

SCREW-A;2S-4X12,TOOTHED

SCREW-A;2S-4X12,TOOTHED

SCREW-A;2S-4X12,TOOTHED

SCREW-A;2S-4X12,TOOTHED

SCREW-TAP PH;PH,M3,L8,FEFZY,PLAIN

SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W

SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W

SCREW-TAP PH;PH,M3,L6,FEFZY

SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W

SCREW-TAP TITE;TH,+,3,M4,L10,SWR10,ZPC2,TOOTH

Remarks

B-PLTE

BD-LAT

CN-BOX

CV/AIR

MO/FAN

PN/OUT

PCB

CV-TCO

N-F-EA

P-C-EA

S-M-EA

HI-LOW

HI-UPP

MG-TCO

MGT

TNS-HV

-

-

M/GEAR

-

Q'ty

2

1

2

5

2

1

2

2

1

1

2

1

4

4

2

1

1

2

1

1

7-4 Samsung Electronics

8. P.C.B Diagrams

8-1 P.C.B Diagrams

Samsung Electronics 8-1

P.C.B Diagrams

8-2 P.C.B Parts List

No.

Parts No.

Description / Specification Q'ty Remarks

P 1 0401-001002 DIODE-SWITCHING;1N4148M,100V,200mA,DO-34,TP

P 1 0401-001002 DIODE-SWITCHING;1N4148M,100V,200mA,DO-34,TP

P 2 0402-000559 DIODE-RECTIFIER;D4G,400V,1A,T-1

P 3 0403-000525 DIODE-ZENER;1N4733A,5.1V,5%,1W,DO-41,TP

P 4 0501-000283 TR-SMALL SIGNAL;KSA539,PNP,400mW,TO-92,TP,120-

P 5 0501-000388 TR-SMALL SIGNAL;KSC815,NPN,400mW,TO-92,BK,120-

P 6 0504-001014 TR-DIGITAL;KSR1005,NPN,300mW,4.7K-10K,TO-

P 7 0504-001015 TR-DIGITAL;KSR2005,PNP,300mW,4.7K-10K,TO-

P 8 2001-000037 R-CARBON(S);330OHM,5%,1/2W,AA,TP

P 9 2001-000273 R-CARBON;100KOHM,5%,1/8W,AA,TP

P10 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP

P11 2001-000429 R-CARBON;1KOHM,5%,1/8W,AA,TP

P12 2001-000435 R-CARBON;1MOHM,5%,1/8W,AA,TP

P13 2001-000613 R-CARBON;3.9KOHM,5%,1/8W,AA,TP

P14 2001-000780 R-CARBON;470OHM,5%,1/8W,AA,TP

P15 2011-000157 R-NETWORK;10K,5%,1/8W,A,SIP,6P,BK

8 D04,D05,D06,D07,D08,D09,D10,D11

8 D12,D13,D14,D15,D16,D17,D18,D19

3 D01,D02,D03

3 ZD01,ZD02,ZD03

1 TR01

1 TR03

6 TR02,TR04,TR05,TR06,TR07,TR08

1 TR09

2 R01,R02

1 R16

6 R12,R13,R14,R19,R20,R21

8 R05,R06,R08,R09,R10,R18,R22,R23

1 R07

7 R11,R15,R17,R24,R25,R26,R27

2 R03,R04

1 AR01

P16 2202-000173 C-CERAMIC,MLC-AXIAL;1nF,10%,50V,Y5P,TP,1.9x3.5

P17 2202-000205 C-CERAMIC,MLC-AXIAL;22pF,5%,50V,SL,TP,1.9x3.5

4 C11,C12,C13,C14

2 C07,C08

P18 2202-000780 C-CERAMIC,MLC-AXIAL;100nF,+80-20%,50V,Y5V,TP,3.5x1

5 C05,C06,C09,C10,C19

P19 2401-000244 C-AL;100uF,20%,10V,GP,TP,6.3x7,5 1 C03

P20 2401-000914 C-AL;22uF,20%,16V,GP,TP,5x11,5

P21 2401-001415 C-AL;470uF,20%,35V,GP,TP,10x20,5

1 C04

1 C01

P22 2401-001573 C-AL;47uF,20%,50V,GP,TP,6.3x11,2.5

1 C02

P23 2802-000143 RESONATOR-CERAMIC;4.19MHz,0.5%,TP,10.0x5.0x7.5mm

1 XTL1

P24 3711-000203 CONNECTOR-HEADER;1WALL,3P,1R,3.96mm,ANGLE,SN 1 CN01

P25 3711-000240 CONNECTOR-HEADER;1WALL,4P,1R,3.96mm,STRAIGHT,SN 1 CN02

P26 3711-000881 CONNECTOR-HEADER;BOX,3P,1R,2.5mm,STRAIGHT,SN

P27 DE13-20009A IC;KA7533,DIP

1

1

CN03

IC02

P28 DE39-60001A WIRE-SO COPPER;PI0.6,SN,T,52MM,TAPING_WIRE

P28 DE39-60001A WIRE-SO COPPER;PI0.6,SN,T,52MM,TAPING_WIRE

P28 DE39-60001A WIRE-SO COPPER;PI0.6,SN,T,52MM,TAPING_WIRE

P29 3501-001016 RELAY-MINIATURE;24V,12.5mA,5A,1FormA,8mS,4mS

8

8

3

1

J01,J02,J03,J04,J05,J06,J07,J08

J09,J10,J11,J12,J13,J14,J15,J16

J17,J18,J19

RY02

P29 3501-001016 RELAY-MINIATURE;24V,12.5mA,5A,1FormA,8mS,4mS

P30 3501-001062 RELAY-POWER;24VDC,523.2mW,16A,1FormA,15mS

P31 3708-000528 CONNECTOR-FPC/FC/PIC;13P,2.54mm,STRAIGHT,SN

P32 DE07-10081A V.F.DISPLAY;SVM-4SM03,GRN/RSHORG,4,51,81.7

P33 DE09-30530A IC-MCU;HD404316-C31S,DIP,M945/M245(EU

P34 DE26-20141A TRANS-L.V;SLV-945E,230V,50HZ,AC17/2.9V

P35 DE30-20016A BUZZER;CBE2220BA,STICK

P36 DE61-90004A HOLDER-DIGITRON;NYLON#66,1.5,85,36,8GR,BLK

1 RY03

1 RY01

1 CN04

1 VFD1

1 IC01

1 LVT1

1 BUZ1

1 -

8-2 Samsung Electronics

9. Schematic Diagrams

9-1 Schematic Diagrams

230V~

50Hz

VOLTAGE

FREG

E

NOTE

1. INPUT : 230V

2. DOOR : OPEN

3. LAMP : ON

4. : P.C.B PATTERN

5. : P.C.B IN/OUT

POINT

ASSY NOISE FILTER

1mH

L.V.T

BRN

MGT

TCO

BRN

CAVITY

TCO

BRN

BLK

PRIMARY

SWITCH

BLU

MAIN

RELAY

YEL

L 230V

YEL

FM

0V

21V

ORG

BLU

ORG

BLU

DM

E

YEL

BRN

INRUSH RELAY

RESISTOR

MONITOR

SWITCH

BLK

WHT

YEL

BLU BLU

POWER RELAY

H.V.T

0V

H.V.FUSE

H.V.D

H.V.C

F FA

MAGNETRON

MAIN

RELAY

INRUSH

RELAY

POWER

RELAY

DOOR

SENSING

SWITCH

ORG

ASSY MAIN P.C.B

PRIMARY

LATCH

SWITCH

DOOR

SENSING

SWITCH

MONITOR

SWITCH

SYMBOL COLOR

BRN

BLU

ORG

RED

WHT

BLK

YEL

GRN

Y/G

BROWN

BLUE

ORANGE

RED

WHITE

BLACK

YELLOW

GREEN

YELLOW/GREEN

Samsung Electronics 9-1

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