Samsung CM-1819, CM-1829, CM-1419, CM-1429 Schematic

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Page 1

MICROWAVE OVEN

CM-1819 / CM-1419 CM-1829 / CM-1429

SERVICE

Manual

MICROWAVE OVEN

CONTENTS

1. Precaution

2. Specifications

3. Operating Instructions

4. Disassembly and Reassembly

5. Alignment and Adjustments

6. Troubleshooting

7. Exploded Views and Parts List

8. PCB Circuit Diagrams and Parts List

9. Wiring Diagram & Operating Sequence

SEUK

1 2 3 4 5 6 7 8 9 0

+ 20sec

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Samsung Electronics

1. Precaution

1-1 Safety precautions ( )

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. All repairs should be done in accordance with the procedures described in this manual.

2. Microwave emission check should be performed 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 centre for devices and radiological health immediately.

4. Notify the Central Service Centre if the microwave leakage exceeds 5 mW/cm2.

5. Check all grounds.

6. Do not power the microwave oven from a "2prong" AC cord. Be sure that all of the builtin 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 5mW/cm2. 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.

10. Service technicians should remove their watches while repairing an microwave oven.

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 door sensing 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 door sensing 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. Never alter or add to the mechanical or electrical design of the microwave oven. Any design changes or additions will void the manufacturer's warranty.

14. Always unplug the unit's AC power cord from the AC power source before attempting to remove or reinstall any component or assembly.

15. 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.

16. 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.

17. 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.

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

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

20. 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.

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Samsung Electronics

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 here)

2. The high-voltage capacitor remains charged about 30 seconds after disconnection. Short the negative terminal of the high-voltage capacitor 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.

Precaution

1-2 Special High Voltage Precautions

Note :Touch chassis side first then short to

the high voltage capacitor terminal by using a screwdriver.

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.

PRECAUTION

Never touch any circuit wiring with your hand nor with an insulated tool during operation.

PRECAUTION

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

H.V.Capacitors

Negative Terminal

Screwdriver

Discharge the 2 High Voltage Capacitors before servicing !

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Samsung Electronics

2. Specifications

2-1 Table of Specifications (CM-1819 / CM-1419)

MODEL CM-1819 CM-1419

ITEM TIMER Max. 25 min Max. 25 min POWER SOURCE 230V/50HZ, AC 230V/50HZ, AC POWER CONSUMPTION MICROWAVE : 3,150W MICROWAVE : 2,600W

240V: 1,800W 240V: 1,400W

OUTPUT POWER (IEC-705) (IEC-705)

230V: 1,730W 230V: 1,340W OPERATING FREQUENCY 2,450MHz 2,450MHz MAGNETRON OM75P(20)ESS OM75P(20)ESS COOLING METHOD VENTILATION MOTOR VENTILATION MOTOR OUTSIDE DIMENSIONS 464(W) x 368(H) x 557(D) 464(W) x 368(H) x 557(D) NET WEIGHT 32 Kg 32 Kg SHIPPING WEIGHT 34.5 Kg 34.5 Kg

2-2 Table of Specifications (CM-1829 / CM-1429)

MODEL CM-1829 CM-1429

ITEM TIMER Max. 25 min Max. 25 min POWER SOURCE 230V/50HZ, AC 230V/50HZ, AC POWER CONSUMPTION MICROWAVE : 3,150W MICROWAVE : 2,600W

240V: 1,800W 240V: 1,400W

OUTPUT POWER (IEC-705) (IEC-705)

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Samsung Electronics

3. Operating Instructions

3-1 Features (CM-1819 / CM-1419)

OVEN LAMP

DISPLAY

OVEN LAMP COVER

DOOR HANDLE

DOOR

+20sec PAD STOP/CANCEL PAD

START BUTTON

CEILING COVER

SAFETY INTERLOCK HOLES

VARIABLE COOKING POWER CONTROL DIAL

TIMER DIAL

DOOR LATCHES PLATE TRAY AIR FILTER

1 2 3 4 5 6 7 8 9 0

+ 20sec

OVEN LAMP

DISPLAY

OVEN LAMP COVER

DOOR HANDLE

DOOR

CONTROL PANEL +20sec PAD

STOP/CANCEL PAD

START BUTTON

CEILING COVER

SAFETY INTERLOCK HOLES

3-2 Features (CM-1829 / CM-1429)

DOOR LATCHES PLATE TRAY AIR FILTER

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Samsung Electronics

3-4 External Views (CM-1819 / CM-1419)

514

1000

368

444

464

486

530

557

514

1000

368

444

464

486

530

557

3-3 Control Panel (CM-1829 / CM-1429)

1. DISPLAY

2. PROGRAM PAD

3. PROGRAM LOCK PAD

4. NUMBER PADS(TIME, MEMORY PROGRAMMING)

5. POWER LEVEL SELECTOR PAD

6. DEFROST SELECTOR PAD

7. DOUBLE QUANTITY PAD

8. +20sec PAD (ONE TOUCH COOK PAD)

9. STOP/CANCEL PAD

10. START BUTTON

1 2 4

3 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 0

+ 20sec

Operating Instructions

3-4-1 External Views (CM-1819 / CM-1419)

3-4-2 External Views (CM-1829 / CM-1429)

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Samsung Electronics

3-5 Operation Guide (CM-1819 / CM-1419)

Cooking/Reheating

1. Make sure the oven is plugged into a properly earthed electrical outlet and ‘ON’ appears in the display window.

2. Open the door. The oven lamp will be turned on.

3. Put the food into a suitable container, place it in the center of the oven and then close the door securely. Result: The oven lamp will go off.

4. Select the desired power level by rotating the COOKING POWER CONTROL DIAL. Result: The selected power level will be displayed in the display window.

5. Set the desired heating time by rotating the TIMER DIAL. Result: “ON” blinks and the selected time is displayed in the display window.

6. Press pad: Result:The oven lamp and cooling fan will be turned on. Heating will start. The time on digital display will count down.

7. When all time is elapsed, the end of cycle Beep Tone will sound 4 times and all heating will stop. The oven lamp will go off. For 1 min, the display shows and the cooling fan will keep working in order to cool

down the interior parts. During the time, the fan will not stop even when you open the door. 1 min later it will stop and ON appears again. Food may be removed from oven whilst the fan is still running.

8. Open the door and take the food out.

9. Close the door. The oven lamp will go off.

NOTE: Whilst heating, one press on pad stops the oven. You can restart it by pressing the pad or a

second press on pad will cancel the selected program. When it is NOT in a heating cycle, one tap on pad cancels the selected program. You can set the power level first and then the cooking time

next, or vice versa. You can press +20sec button one or more times in order to add the cooking time by 20 seconds.

Operating Instructions

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Samsung Electronics

3-5 Operation Guide (CM-1819 / CM-1419 continued)

To stop the cooking

You can stop cooking at any time so that you can:

• Check the food

• Turn the food over or stir it

• Leave it to stand

* Temporarily ; Open the door or press button once.

Result: Cooking stops. To resume cooking, close the door and press again.

* Completely ; Press the button twice.

Result: The cooking settings are cancelled.

If you want to cancel any cooking settings before starting cooking, simply press once.

Using the Defrost Feature

The Defrost feature enables you to defrost meat, poultry, fish. NOTE: Only use containers that are microwave-safe.

1. Open the door.

2. Place the frozen food in the centre of the plate tray.

3. Close the door.

4. Rotate the Variable Cooking Power Control dial to the DEFROST HIGH( ) or DEFROST LOW( ) as you wish. Result: The DEFROST indicator appears on the digital display.

5. Rotate the TIMER dial to set the defrosting time. The Maximum time that can be set under defrosting mode is 50min.

6. Press button. Result: Defrosting begins.

Operating Instructions

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Samsung Electronics

3-5 Operation Guide (CM-1829 / CM-1429)

Cooking/Reheating

NOTE: When you first plug in the power cord, the oven beeps once and all the indicators show for 5 sec in

the display window.

NOTE: When heating cycle is completed and you open the door, the oven lamp automatically turns on and

goes off 1 min later.

NOTE: When you open the door whilst in a heating cycle, the oven stops operating and the oven lamp

automatically turns on for 1 min and goes off 1 min later. If you leave the oven door open for more than 1 min, the oven beeps once every minute and after 5 min the power source check indicator ‘ON’ appears in the display window.

This oven is preset at the factory for automatic operation.

1. Make sure the oven is plugged into a properly earthed electrical outlet and ‘ON’ appears in the display window.

2. Open the door. The oven lamp will be turned on.

3. Put the food into a suitable container, place it in the centre of the oven and then close the door securely. Result: The oven lamp will go off.

4. Select the desired power level by pressing the Power Level Selector pad. Result: The selected power level will be displayed in the display window.

5. Set the desired heating time by pressing the Number pads. Result: The selected time is displayed in the display window.

6. Press START button: Result: The oven lamp and cooling fan will be turned on. Heating will start. The time on digital display will count down.

cool down the interior parts. During the time, the fan will not stop even when you open the door. 1 min later it will stop and ‘ON’ appears again. Food may be removed from oven whilst the fan is still running.

8. Open the door and take the food out.

9. Close the door. The oven lamp will go off.

Operating Instructions

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Samsung Electronics

3-5 Operation Guide (CM-1829 / CM-1429 continued)

Using the Defrost Feature

NOTE: When the oven was operating for longer than 25 min under Defrosting cycle, you can NOT change

the power level from Defrosting to Heating(Cooking/Reheating) mode.

NOTE: The oven is designed not to work when power level is set to ‘0’ mode between the heating mode

and the defrosting mode.

* Use only containers that are microwave-safe.

1. Open the door.

2. Place the frozen food in the centre of the plate tray.

3. Close the door.

4. Press the Defrost selector pad to set DEFROST HIGH ( ) or DEFROST LOW ( ) as you wish. Result: The selected DEFROST indicator appears in the display.

5. Press the Number pads to set the defrosting time. (Max. 50 min)

6. Press button. Result: Defrosting begins.

NOTE: It is not possible to set a defrosting time for longer than 50min. The defrost indicator will flash and it

is advisable to press CANCEL and enter a new defrost level and time.

Repeat Feature

You can repeat the previous cooking setting (regardless of manual or automatic memory heating) by pressing the START button. The oven starts with exactly the same heating time and power level that were used in the last operation. NOTE: Repeat feature does not support for +20sec pad. The repeat feature will be cancelled once the

power source is cut off.

Using +20sec Pad

This is a ONE TOUCH COOK pad. By touching the +20sec pad once, you can start heating instantly. You can increase the cooking time by pressing the +20sec pad while heating is being done. A cooking time increases by 20 seconds at each press on +20sec pad. But it can not exceed the maximum time. Like traditional cooking, you may find that, depending on the food’s characteristics or your tastes, you have to adjust the cooking times slightly. Before operating the oven, times can be increased/decreased using either the time pads or +20sec button. During the operating, time may only be added by using the +20sec button.

Operating Instructions

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Samsung Electronics

3-5 Operation Guide (CM-1829 / CM-1429 continued)

Memory Pads Programming

1. Hold down PROGRAM LOCK pad and then press PROGRAM pad. Hold together for 2 sec. Be sure to press the pads firmly. Result: PROG indicator appears in the digital display.

2. Press appropriate NUMBER pad for the desired memory number. Result: Selected memory program code appears below the PROGRAM indicator.

3. Select power level by pressing the POWER LEVEL pad. Result:Default power level HIGH appears in the display at first press of the POWER LEVEL pad.

Press the POWER LEVEL pad one or more times until you get the desired power level.

4. Press NUMBER pads to set the cooking time. Result: The maximum time according to each cooking power level can be referred to in the title “Power Levels and Time Variations” on page 12~13. The NUMBER pads will not operate or respond when you press a cooking time exceeding the maximum value.

NOTE: It is not possible to set a cooking time for longer than the maximum time allowed on the chosen

program. The power level indicator will flash and it is advisable to press CANCEL and to enter a new power level and cooking time.

5. Hold down PROGRAM LOCK pad and then press PROGRAM pad. Hold together for 2 sec once again. Result: PROG indicator and memory number indicator blink 3 times in the digital display with a beep

sound. And then the display goes blank.

Caution: Be sure to press the pads firmly in the right position.

6. When you want to program more, repeat the procedures above again. Memory programs are available up to 30 items. Make sure the unit is properly programmed. After programming is finished, all you have to do for memory cooking is to press the NUMBER pad. Then the selected memory program automatically starts cooking.

Operating Instructions

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Samsung Electronics

3-5 Operation Guide (CM-1829 / CM-1429 continued)

How to Operate Memory Cooking

After having finished memory programming, just press the NUMBER pad of the memory number you want to select. The oven will automatically start heating according to the pre-programmed cooking time and power level after a short delay (5 sec).

1. Make sure the oven is plugged into a properly earthed electrical outlet and ‘ON’ appears in the display window.

2. Open the door. The oven lamp will be turned on.

3. Put the food into a suitable container, place it in the centre of the oven and then close the door securely. Result: The oven lamp will go off.

4. Press NUMBER pad. Result: After 2 seconds, the selected memory program automatically starts heating.

Stopping the Cooking

You can stop cooking at any time so that you can:

• Check the food

• Turn the food over or stir it

• Leave it to stand

To stop the cooking;

* Temporarily: Open the door or press pad once.

Result: Cooking stops. To resume cooking, close the door and press again.

* Completely: Press the pad twice.

Result: The cooking settings are cancelled.

If you want to cancel any cooking settings before starting cooking, simply press CANCEL pad once.

Operating Instructions

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Samsung Electronics

3-5 Operation Guide (CM-1829 / CM-1429 / CM-1819 / CM-1419)

Power Levels and Time Variations

The power level function enables you to adapt the amount of energy dissipated and thus the time required to cook or reheat your food, according to its type and quantity. You can choose between the power levels below.

.....................................................................................................................................................

Power Level Percentage CM-1819/1829 Percentage CM-1419/1429

.....................................................................................................................................................

HIGH( ) 100% 1800 W 100% 1400W MEDIUM( ) 70% 1260 W 70% 980W LOW( ) 50% 900 W 50% 700W HIGH DEFROST( ) 20% 360 W 25% 360W LOW DEFROST( ) 10% 180 W 13% 180W

.....................................................................................................................................................

You cannot set the cooking time longer than maximum value allowed to each specific power level. (see below.)

..................................................................

Power Level Max. Time

..................................................................

HIGH 25 min. MEDIUM 40 min. LOW 40 min. HIGH DEFROST 50 min. LOW DEFROST 50 min.

..................................................................

Operating Instructions

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Samsung Electronics

4. Disassembly and Reassembly

4-1 Replacement of Magnetron

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

1. Remove the outer panel. NOTE: Before servicing, make sure to discharge

electric charge remaining on the high voltage capacitors or wait for more than 5 min.

2. Remove the back cover.

3. Disconnect all lead wires from the magnetron.

4. Remove screws securing the duct-MGT and duct-fan.

5. Remove the nut-flanges securing the magnetron by using a box wrench.

6. Take out the magnetron very carefully.

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. (See page 19 for adjustment

instructions.)

1. Discharge the high voltage capacitor.

2. Disconnect all the leads.

3. Remove the mounting bolts securing the HVT.

4. Reconnect the leads correctly and firmly.

4-2 Replacement of High Voltage Transformer

Magnetron

Duct-Fan

Nut-Flange

Duct-MGT-L

DuctMGT-R

H. V. Trans

4 Mounting Bolts

LVT

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Samsung Electronics

Disassembly and Reassembly

4-3 Replacement of Door Assembly

4-3-1 Removal of Door Assembly

NOTE: Be sure to wear gloves when you

disassemble or assemble the parts.

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

2. Insert the flat screwdriver or thin metal plate into the gap between the door E and door C to remove Door C from the door assembly.

3. Remove 2 screws securing the Door Handle.

4. Unbend the 6 metal tabs around the trim of Decoration Door Cover.

5. Remove 3 screws securing the Door E Ass’y.

6. Remove upper hinge and lower hinge.

7. Remove Decoration Door, Screen B, Key-Door, Spring-Key, Pin-Key as needed.

4-3-2 Removal of Door Handle

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

2. Insert the flat screwdriver or thin metal plate into the gap between the door E and door C to remove Door C from the door assembly.

NOTE: Be careful when handling Door C as is

fragile.

NOTE: The thickness of the flat screwdriver or

thin metal plate inserted into the gap should be 0.5mm or less.

3. Remove 2 screws securing the Door Handle to the Door E Ass’y.

4. Unbend the 2 metal tabs at both ends of the Door Handle to remove the Door Handle Cover from the Door Handle.

Upper Hinge

Lower Hinge Spring-Key

2 screws securing Door Handle

Key-Door Pin-Key

Screen B

Door C

Door E Ass’y

Decoration Door

Decoration Door Cover

Door Handle

Door Handle Cover

4-3-3 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.

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Samsung Electronics

Disassembly and Reassembly

1. Disconnect the oven from the power source.

2. Remove defective fuse from Noise filter.

3. When replacing the fuse, be sure to use an exact replacement part. If new 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, ventilation motor or high voltage transformer is defective.

4-5-1 Replacement of Drive Motor

1. Remove outer panel and back-cover.

2. Disconnect all the lead wires from the drive motor.

3. Remove a screw securing the drive motor.

4. When replacing the drive motor, be sure to remount it in the correct position with the coupler.

5. Connect all the leads to the drive motor.

6. Screw the drive motor to the bracket motor with a screw driver.

4-5-2 Replacement of Ass’y Stirrer

1. Remove a screw securing the drive motor.

2. Open the door.

3. Hold side stoppers of ceiling cover (Ass’y Stirrer Cover) with both hands and pull them in and down.

4. Take the ceiling cover out of the oven cavity.

5. Remove plastic clips securing the Ass’y Stirrer.

Caution: When removing the Ass’y Stirrer Cover,

be sure to be extremely careful about the exposed inside components on the top of the oven cavity. If any of them are deformed, abnormal symptom can happen such as arcing or sparks during operation.

4-4 Replacement of Fuse and H.V.Fuse

4-5 Replacement of Drive Motor & Ass’y Stirrer

Screw

To remove Ass’y Stirrer Cover: Hold side stoppers of ceiling cover with both hands and pull them in and down.

H.V.Fuse

10A Fuse

1.6A Fuse

Drive Motor

Ass’y Stirrer

Ass’y Stirrer Cover

Plastic Clips

1 2 3 4 5 6 7 8 9 0

+ 20sec

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Samsung Electronics

4-6 Replacement of Control Box Ass’y and P.C.Board

4-6-1 Removal of Control Box

Assembly

1. Be sure to discharge any static electric charge

built up on your body and avoid touching the touch control circuitry.

2. Remove 3 screws securing the Control Box Ass’y to the oven cavity.

3. Disconnect all the lead wires, connectors and ground taping (CM-1829/1429) from the main control circuit board (PCB1).

4. Lift up the FPC connector hooks about 5mm upward which connects to the main control circuit board (PCB1) from the tail of switch membrane of the control box assembly. (CM1829/1429)

5. Remove a screw securing the tapped taping to PCB1. (CM-1829/1429)

6. Remove Control Box Ass’y.

7. To replace Digitron, remove 2 screws securing the PCB4.

8. To replace Start Button Circuitry, remove 3 screws securing the PCB3. (CM-1829/1429)

9. Unbend the metal tabs holding the Panel-Base to Control Box body.

4-6-2 Removal of main P.C.Board

1. Remove Control Box Assembly by following the

steps 1~ 5 at left.

2. Remove 4 screws securing the main PCBoard

to the bracket PCBoard.

NOTE: When handling the the touch control

circuitry, be most careful to avoid damage.

Disassembly and Reassembly

Control Box Ass’y (CM-1819/1419)

Control Box Ass’y (CM-1829/1429)

Switch-Membrane

Digitron(PCB4)

PCB3

Main P.C.Board (PCB1)

Wire Harness-C

Wire Harness-D

Wire Harness-F

Wire Harness-B

Window-Display

Cover-Panel/L

Cover-Panel/R

Panel-Base

Button-Start

PCB2

Button-Select

Main P.C.Board (PCB1)

Panel Base

Cover Panel

Wire Harness-B

Wire Harness-C

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Samsung Electronics

1. Remove the outer panel and back-cover.

2. Discharge the high voltage capacitor.

3. Remove all the lead wires from Magnetron and High Voltage Capacitor.

4. Remove 2 screws securing the duct fan.

5. Remove 2 screws securing the Supporter-FanMount.

6. Lift the Ventilation Motor Ass’y slightly upward and pull it out.

7. Remove lead wires and connectors.

8. Remove a screw securing the C-Film to the Supporter-Fan-Mount.

9. Turn the fan motor ass’y over so that the bracket side is up.

10. Remove 4 screws securing the Ventilation Motor.

NOTE: You don’t need to remove the outer panel

or other parts in order to replace a lamp.

1. Remove a screw securing the lamp cover.

2. Remove the lamp by rotating it clockwise.

3. Replace with a new lamp by rotating it counterclockwise.

NOTE : If it is necessary to replace the lamp

holder, you can disconnect lead wires by pushing down on the hole of lead wires using a long pointed tool.

1. Open the door.

2. Remove the tray by inserting a thin metal tool into the gap between the oven wall and the tray silicon cover.

3. Insert the new tray by tilting it across the oven cavity.

4. Firstly fix the front part (refers to the place where the silicon cover is thinner than the other 3 edges) and then place the backward part carefully and firmly.

NOTE: Be careful when you handle the tray since

it is fragile.

Lamp Holder

Tray

Supporter-Fan-Mount

Duct-Fan

Ventilation Motor

C-Film

Lamp Cover

Outer Panel

Disassembly and Reassembly

4-7 Replacement of Ventilation Motor

4-8 Replacement of Tray

4-9 Replacement of Lamp

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Samsung Electronics

1. Pull out the spacer pins at both ends of the Air Filter. Then the locking clamps inside are released.

2. Lift the Air Filter off the post carefully.

Note: Spacer pins are not detachable from the

Air Filter.

NOTE: It is not necessary to remove Magnetron in

order to remove HVC.

1. Remove the outer panel and back cover.

2. Discharge the high voltage capacitor.

3. Remove HVT wire and H.V.Fuse.

4. Remove screws securing HVC bracket.

4-10 Replacement of Air Filter

Plastic Spacer Pins

Disassembly and Reassembly

4-11 Replacement of High Voltage Capacitor

H.V.Capacitor

Page 20

5. Alignment and Adjustments

5-1 High Voltage Transformer

5-2 Low Voltage Transformer

5-3 Magnetron

1. Remove connectors from the transformer terminals

and check continuity.

2. Normal resistance readings are as follows:

(Room temperature = 20˚C)

Continuity checks can indicate only an open

filament or a short magnetron. To diagnose an open filament or short magnetron :

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

2. A continuity check across the magnetron filament terminals should indicate one ohm or less.

3. A continuity check between each filament terminal and magnetron case should read open.

1. The low voltage transformer is located on the base plate.

2. Remove the low voltage transformer from the base plate and check continuity.

3. Normal resistor reading is shown in the table.

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.

Filament Terminals

Primary Terminals

Secondary Terminal

Terminal Resistance

Secondary Approx. 98Ω

Filament Approx. 0Ω Primary Approx. 1.3Ω

Terminals Resistance Wire

1~2(input) Approx. 296Ω WHT 3~4(output 20V) Approx. 5.1Ω RED 5~6(output 3.2V) Approx. 1.1Ω YEL

Samsung Electronics

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 9MΩ.

3. A shorted capacitor will show continuous continuity.

4. An open capacitor will show constant 9MΩ.

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

Magnetron Antenna

Gasket Plate

Cooling Fins

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Samsung Electronics

5-5 High Voltage Diode

5-6 Main Relay and Power Control Relay

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

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 KΩ in the other direction.

1. When mounting Primary switch and Interlock Monitor switch to Latch Body, consult the figure.

NOTE:No specific adjustment during installation

of Primary switch and Monitor switch to the latch body is necessary.

2. 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.

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

4. Confirm that the gap between the switch housing and the switch actuator is no more than 0.5mm when door is closed.

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 to high.

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

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 door sensing 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.

Alignment and Adjustments

COM NO

COM

Door Open Door Closed

Primary S/W ∞ 0 Monitor S/W(COM-NC) 0 ∞ Monitor S/W(COM-NO) ∞ 0

Door Sensing S/W

∞

Primary S/W Interlock Monitor S/W Door Sensing S/W

RED/YEL

BRN PINK/PINK ORG

WHT WHT ORG

RED/WHT

BLU BRN/AZR

BRN/ORG BRN

Latch-Body

Door Sensing S/W Lever-Switch/U

Interlock Monitor S/W

Primary S/W

Lever-Switch/L

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Samsung Electronics

7. Normal temperature rise for this model is 9˚C to 11˚C 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 5) by a factor of 90 times of centigrade temperature.

4.187 x 1000 x ∆T+ 0.88 x MC x (T2-T0)

Output Power =

23.3(29.9)

* 23.3: CM-1819/1829(1800W) * 29.9: CM-1419/1429(1400W)

23.3(29.9): Heating Time (sec)

4.187 : Coefficient for Water 1000 : Water (cc)

∆T : Temperature Rise (T2-T1) MC : Cylindrical borosilicate glass weight

T0 : Room temperature

5-8 Output Power of Magnetron

Alignment and Adjustments

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±1˚C).

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 26 seconds for CM-1819/1829 or 33 seconds for CM-1419/1429 exactly. (3 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. (∆T)

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

The microwave heat distribution can be checked indirectly by measuring the water temperature rise at certain positions in the oven:

1. Prepare five beakers made of 'Pyrex', having 100 milliliters capacity each.

2. Measure exactly 100milliliters of water load with a measuring cylinder, and pour into each beaker.

3. Measure the temperature of each water load. (Readings shall be taken to the first place of decimals.)

4. Put each beaker in place on the plate tray as illustrated in figure below. Start heating.

5. After heating for 1 minute, measure the water temperature in each beaker.

6. Microwave heat distribution rate can be calculated as follows: Minimum

Temperature Rise

Heat Distribution = X 100(%)

Maximum

Temperature Rise

The result should exceed 65%.

5-9 Microwave Heat Distribution - Heat Evenness

D/4

Plate Tray

Beaker

Page 23

Samsung Electronics

Alignment and Adjustments

5-10 Check for Microwave Leakage

Maximum leakage allowed is 5mW/cm2. 4mW/cm2is used to allow for measurement and meter accuracy

WARNING

AVOID THE HIGH VOLTAGE COMPONENTS.

5-10-1 Procedure for Measurement of

Microwave Energy Leakage

1) Pour 275 ±15cc of 20°C±5°C ( 68°F±9°F ) 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/cm2, after repair or adjustment.

5-10-2 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.

5-10-3 Record keeping and notification

after measurement

1) After adjustment and repair of a radiation preventing device, make a repair record for the measured values, and keep the data.

2) If the radiation leakage is more than 4mW/cm

after determining that all parts are in good condition, functioning properly and the identical parts are replaced as listed in this manual, notify that fact to ; CENTRAL SERVICE CENTRE

3) At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer.

5-11 Check the Thermistor sensor

If the Thermistor sensor does not fall into range of maximum and minimum, it is fault. (eg. Resistor is 235KΩ ±12% at 25°C. Refer to figure below.)

Probe Spacer Cone

KΩ

Thermistor sensor

Thermistor Sensor Temperature

Circuit Tester

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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 LEAD WIRES 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 Malfunction

SYMPTOM CAUSE CORRECTIONS

Oven is dead. 1. Open or loose lead wire harness Check magnetron or cavity thermal cutout Fuse is OK. 2. Open thermal cutout (magnetron, cavity) switch is defective. No display and no 3. Open low voltage transformer Check Ass'y PCB when LVT is defective. operation. 4. Defective Ass'y PCB

No display and no 1. Shorted lead wire Check adjustment of primary, interlock operation 2. Defective primary latch switch (NOTE1) monitor, door sensing switch. Fuse blown out. 3. Defective monitor switch (NOTE1) (10A, 1.6A) 4. Shorted HVCapacitor

5. Shorted HVTransformer (NOTE2) NOTE 1: All of these switches must be replaced at the same time.

(refer to adjustment instructions)

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

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

Oven does not accept 1. Key input is not in-Sequence Refer to operation procedure. key input (Program) 2. Open or loose connection of membrane (CM-1829/1429) key pad to Ass'y PCB

3. Shorted or open membrane panel

4. Defective Ass'y PCB Replace PCB main.

1. Open or loose connection of high voltage Adjust door and latch switches. circuit especially magnetron filament circuit

NOTE: Large contact resistance will bring

lower magnetron filament voltage and Timer starts countdown cause magnetron to lower output and/or but no microwave intermittent oscillation. oscillation. 2. Defective high voltage components Check high voltage component (No heat while oven lamp H.V.Transformer according to component test procedure and fan motor turn on.) H.V.Capacitor and replace if defective.

H.V.Diode, H.V.Fuse Magnetron

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Samsung Electronics

Troubleshooting

SYMPTOM CAUSE CORRECTIONS

Oven lamp goes off 1. Loose lead wire Tighten lamp lead wire or

or open lamp filament replace with a new lamp

2. Misadjustment of latch switch

3. Defective latch switch

Microwave output is low;. 1. Decrease in power source voltage. Consult electrician. Oven takes longer time 2. Open or loose wiring of magnetron

to cook food. filament circuit. (Intermittent oscillation) (No heat while oven 3. Aging of magnetron lamp and 4. Defective high voltage components Check high voltage component ventilation H.V.Transformer according to component test procedure motor.) H.V.Capacitor and replace if defective.

H.V.Diode,H.V.Fuse Magnetron

Oven does not operate and Defective Ass'y PCB Replace Ass’y PCB.

return to plugged-in mode.

Loud buzzing noise can 1. Loose fan and ventilation motor Tighten screws of ventilation motor.

be heard. 2. Loose screws on H.V.Transformer Tighten screws of H.V.Transformer.

3. Shorted H.V.Diode Replace H.V.Diode.

4. Loose or missing screws on Tighten screws of Cover-Back Cover-Back

Drive motor not 1. Open or loose wiring of drive motor. Check the wire of drive motor work. (Assy stirrer 2. Defective drive motor. Replace drive motor. does not rotate.) 3. Defective ass’y stirrer Replace ass’y stirrer.

Oven stops operating 1. Operation of thermal cutout Adjust door and latch switches. during cooking. (Magnetron or Cavity)

2. Ventilation motor does not rotate. Replace ventilation motor.

Sparks 1. Metallic ware or cooking dishes Inform the customer of proper use.

touching on the oven wall.

2. Ceramic ware trimmed with gold or Do not use any type of cookware silver powder also causes sparks. with metallic trimming.

Uneven cooking Uneven intensity of microwave due to Wrap thinner parts of the food with

its characteristics. aluminum foil.

Use plastic wrap or cover with a lid. Stir once or twice while cooking foods such as soup, cocoa, or milk.

Noise from turntable motor Noise may result from the motor. Replace turntable motor. when it starts to operate.

Oven can program Defective circuitry of Start function Check circuitry of Start function but timer does not of Main PCB Ass’y. of Main PCB Ass’y and replace if start. defective.

Loose lead wires Adjust or repair loose wires.

6-1 Electrical Malfunction(continued)

Page 26

Samsung Electronics

Troubleshooting

Code Cause Corrections

E1 1. Improper input power Check if power frequency is 50Hz.

frequency

2. Defective Ass’y Main PCB Replace Ass’y Main PCB or MICOM.

E21 1. Thermistor sensor failure Check resistance of thermistor sensor

2. Thermistor sensor open and replace if defective.

3. Loose connector CN2 Check the circuitry around thermistor sensor.

E22 1. Thermistor sensor failure Check resistance of Thermistor sensor

and replace if defective.

2. Thermistor sensor short If Thermistor sensor is short, replace.

3. Thermistor sensor wire short Check the circuitry around Thermistor sensor.

E3 1. Overheating inside cavity Check if the oven was operating

(no load or little load aging) without load or too little load

and plug the power cord in again. If error code ‘E3’ appears again in the window display, check resistance of Thermistor sensor and replace if defective.

2. Air ventilation blocked around Check if any blocking amterials exist exhaust area around the Air Exhaust or ventilation

openings and follow the instructions above.

3. Ventilation motor failure and Check if the ventilation motor is operative magnetron overheating and replace the motor if defective.

E41 1. Main Relay (RY1) or Check Main Relay (RY1), Power Relay (RY2)

Power Relay (RY2) failure Primary S/W and Monitor S/W and replace

2. Loose lead wires of relay if defective.

3. Primary or Monitor S/W Check if lead wires are loosened failure and connect firmly if loose.

4. Loose lead wires of Primary or Monitor S/W

5. H.V.Trans input power sensing Check the circuitry and replace if defective. circuitry failure (Refer to Operating Sequence

as shown in page 42.)

E42 1. Power Relay (RY5) failure Check Power Relay2, Primary S/W,

2. Loose lead wires of Monitor S/W or Fuse Power Relay (RY5) and replace if defective.

3. Primary or Monitor S/W failure Check if lead wires are loosened

4. Loose lead wires of and repair as necessary. Primary or Monitor S/W

5. Fuse(10A) blown out on neutral area of Ass’y Noise Filter

6. H.V.Trans input power sensing Check the circuitry. (Refer to Operating Sequence circuit failure as shown in page 42.)

E5 1. Memory IC (EEPROM IC) Check Memory IC (IC3) and replace if defective. (CM-1829 failure

/1429) 2. MICOM failure Replace Assy Main PCB or MICOM.

6-2 Error Codes & Corrections

Page 27

Samsung Electronics26

7. Exploded Views and Parts List

7-1 Exploded Views

CM-1829 CM-1429

(CM-1829/1429)

CM-1819 CM-1419

(CM-1819/1419)

Page 28

Samsung Electronics

7-2 Main Parts List

Exploded Views and Parts List

No Parts No Parts Name Description/Specification Q'ty Remarks

1 DE70-30123A PANEL-OUTER STS430 T0.6 CM-1819 1 2 DE39-20075H ASSY POWER CORD UD13A 250V13A L1500 MWO-COMMER 1 3 DE71-60421A COVER-BACK SECC T0.6 W481.8 L363.9 CM-181 1 4 DE71-60422A COVER-LAMP STS430 T0.6 CM-1819 1

5 DE03-30070A MAGNETRON OM75P(20)ESS 1KW 4.4KV COMM 2 6 DE26-10150A TRANS H.V SHV-906BG1 240V 2360V/3.35V 50 2

7 2501-001015 C-OIL 1.0uF 2100V BK 35X54X80 20mm 2 CM-1819/1829 7 2501-001018 C-OIL 800nF 2100V BK 35X54X70 20mm 2 CM-1419/1429 8 DE91-70061A ASSY-H.V.FUSE THV060T-0800-H 5KV/0.8A WHT 2 CM-1819/1829 8 DE91-70061C ASSY-H.V.FUSE THV060T-0700-H 5KV/0.7A BLU 2 CM-1419/1429

9 DE59-40001A DIODE-H.V HVR-1X-32B-12 2 10 DE26-20162A TRANS L.V SLV-1829E 230 19.7/3.1V 50Hz 4 1 11 DE31-10180A MOTOR-VENTILATION SMV-1829EA 120V60Hz 2250rpm CM 1 12 DE61-30189A SUPPORTER-FAN-MOUNT SECC T1.0 CM-1819 1 13 DE72-50088A DUCT-FAN ALCOAT T0.5 CM-1819 1 14 DE72-50089A DUCT-MGT/R SECC T0.5 CM-1819 1 15 DE72-50090A DUCT-MGT/L ALCOAT T0.5 CM-1819 1 16 DE61-50529A BRACKET-SUPPORT STS,0.8,NOISE 1 17 DE91-40105A ASSY NOISE FILTER SN-1829 230V/50Hz 1

18 DE91-10513A ASSY PCB-MAIN CM-1829 230V50Hz VFD 1 CM-1829 18 DE91-10515A ASSY PCB-MAIN CM-1429 230V50Hz VFD 1 CM-1429 18 DE91-10512A ASSY PCB-MAIN CM-1819 230V50Hz VFD 1 CM-1819 18 DE91-10514A ASSY PCB-MAIN CM-1419 230V50Hz VFD 1 CM-1419

19 DE39-40695A WIRE HARNESS-D 230V50Hz CM-1819 EUROPE 1 CM-1419/1819 19 DE39-40113B WIRE HARNESS-F 100V 50/60HZ RE-CH1 1 CM-1829/1429 20 DE39-40692A WIRE HARNESS-B 230V50HZ CM1819/29 EUROPE 1 21 DE39-40694A WIRE HARNESS-C 230V50Hz CM-1819/29 EUROPE 1 22 DE61-50520A BRACKET-PCB SECC T0.8 CM-1819 1 23 DE31-10164B MOTOR-DRIVE M2CK34A709-H(B) 120V60HZ 34.9r 2 24 DE92-90515A ASSY-STIRRER CM-1819 CM-1829 2 25 DE69-90054A CLIP-STIRRER PFA 5mm CM1819/29 6 26 DE71-60423A COVER-STIRRER PP CM-1819 1 27 DE74-20116A TRAY-CERAMIC CERAMIC T3.0 CM-1819 1 28 4713-000168 LAMP-INCANDESCENT 230V 25W ORG 2 29 DE47-40029A SOCKET-LAMP 250V2A 22.230 E14 BJB 2 30 DE61-90318A HOLDER-LAMP SECC T0.8 W134 L40.5 1 31 DE72-50091A DUCT-OVEN STS430 T0.4 CM-1819 1 32 DE66-40062A LATCH-BODY PP CM-1819 1 33 3405-000178 SWITCH-MICRO 250V 15A 200gf SPST-NO 3 34 DE66-90107A LEVER-SWITCH/U PBT CM-1819 1 35 3405-000175 SWITCH-MICRO 250V 15A 200gf SPST-NO 2 36 DE61-50120A BRACKET-HVC SECC T0.6 W62 L72 2 37 DE66-90108A LEVER-SWITCH/L PBT CM-1819 1 38 DE80-10113A BASE-PLATE SECC1 T1.0 BLK_COATING 1 39 DE92-90516A ASSY-BRACKET FILTER CM-1819 STS430 16MESH 1

40 DE92-40195B ASSY DOOR CM-1829 STS 1800W 1 CM-1829 40 DE92-40195A ASSY DOOR CM-1819 STS 1800W 1 CM-1819 40 DE92-40195D ASSY DOOR CM-1429 STS 1400W 1 CM-1429 40 DE92-40195C ASSY DOOR CM-1419 STS 1400W 1 CM-1419 41 DE93-30442A ASSY CONTROL-PANEL CM-1829 TOUCH 1 CM-1829 41 DE93-30443A ASSY CONTROL-PANEL CM-1819 ME 1 CM-1819 41 DE93-30442B ASSY CONTROL-PANEL CM-1429 TC 1 CM-1429 41 DE93-30443B ASSY CONTROL-PANEL CM-1419 ME 1 CM-1419

: Warning

:Electrostatically Sensitive Devices

Page 29

Samsung Electronics

7-2 Main Parts List (continued)

Exploded Views and Parts List

No Parts No Parts Name Description/Specification Q'ty Remarks

42 DE63-90191E CUSHION-GUIDE-E PUT-FOAM T10 W2 L450 CM1819/29 1 43 DE47-20197A THERMOSTAT NT-101NA(8XV)P 100/60 250V/7.5 1 44 DE92-10157A ASSY CAVITY CM-1819 1 * S.N.A. 45 3601-001034 FUSE-FERRULE 250V 10A TIME-DELAY CERAMIC 6. 2 46 2301-001204 C-FILM,PEF 1.5uF 5to+10% 450VAC 48x17. 1 47 3601-001126 FUSE-FERRULE 250V 1.6A QUICK-ACTING CERAMIC 1 48 DE93-90112A ASSY-B/RESISTOR CM-1819/29 2 49 DE61-50541A BRACKET-EARTH SGCC2 T1.0 W15 L8 1 50 DE71-60424A COVER-CEILING MICA_SHEET T0.5 W348 L319 CM-1 1 51 DE47-20017A THERMOSTAT PW-2N(150/60 187Z) 250V/7.5A 1 1 52 DE32-10013A SENSOR-THERMISTOR PT-312-K2 1 53 DE63-90191F CUSHION-GUIDE-F PUT-FOAM T10 W2 L700 CM1819/29 1 54 DE39-40693A WIRE HARNESS-A 230V50HZ CM-1819/29 EUROPE 1

* S.N.A : Service Not Available

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Samsung Electronics

Exploded Views and Parts List

7-3 Exploded View & Parts List - Door Parts

Ref. No. Parts No. Parts Name Description/Specification Q'ty Remark

1 DE64-40298A DOOR-C PP CM-1819 1 2 DE92-50132B ASSY DOOR-E CM-1819 COATING BLK 1 3 DE64-90145A DECORATION-DOOR ABS CM-1819 1 4 DE67-20174A SCREEN-DOOR(B) TEMP-GLASS T3.2 1 5 DE64-90146A DECORATION-COV/DOOR STS CM-1819 1 6 DE64-20123A HANDLE ZN-DICASTING 500G CM-1819 1 7 DE71-60433A COVER-HANDLE STS430 T0.5 CM-1819 1 8 DE64-40296A DOOR-KEY CR3C 2

9 DE60-60080A PIN-KEY A M3.95 L21 STS304 CM-1819 2 10 DE61-70144A SPRING-KEY PI6.5 D0.8 CM-1819 2 11 DE61-80138A HINGE SCP1 T3.0 W24.5 L29.5 2

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Samsung Electronics

7-4 Exploded View & Parts List - Control Parts (CM-1819/1419)

Ref. No Parts No. Parts Name Description/Specification Q'ty Remarks

1 DE91-10512A ASSY PCB-MAIN CM-1819 230V50Hz VFD 1 CM-1819 1 DE91-10514A ASSY PCB-MAIN CM-1419 230V50Hz VFD 1 CM-1419 2 DE70-30126A PANEL-BASE RESIN-ABS ME CM-1819 1 3 DE71-60427A COVER-PANEL STS430 T0.5 ME CM-1829 1 4 DE71-60428A COVER-PANEL/L RESIN-ABS CM-1819 Ni Cr-platin 1 5 DE71-60429A COVER-PANEL/R RESIN-ABS CM-1819 Ni+Cr PLATIN 1 6 DE66-20212A BUTTON-START RESIN-ABS CM-1819 Ni Cr-platin 1 7 DE64-10143A KNOB-POWER RESIN-ABS CM-1819 Ni Cr-platin 1 8 DE64-10144A KNOB-TIMER RESIN-ABS CM-1819 Ni Cr-platin 1 9 DE66-20211A BUTTON-SELECT RESIN-ABS CM-1829 Ni Cr-platin 1

10 DE67-40161A WINDOW-DISPLAY RESIN-PMMA 82555 CM-1819 1 11 DE39-40695A WIRE HARNESS-D 230V50Hz CM-1819 EUROPE 1 12 DE39-40694A WIRE HARNESS-C 230V50Hz CM-1819/29 EUROPE 1 13 DE39-40692A WIRE HARNESS-B 230V50HZ CM-1819/29 EUROPE 1

Exploded Views and Parts List

Page 32

Samsung Electronics

7-4 Exploded View & Parts List - Control Parts (CM-1829/1429)

Ref. No Parts No. Parts Name Description/Specification Q'ty Remarks

1 DE91-10513A ASSY PCB-MAIN CM-1829 230V50Hz VFD 1 CM-1829 1 DE91-10515A ASSY PCB-MAIN CM-1429 230V50Hz VFD 1 CM-1429 2 DE70-30125A PANEL-BASE RESIN-ABS TC CM-1829 1 3 DE34-10237A

SWITCH-MEMBRANE

PE-SHEET 240V 0.5A 200GF 265x5 1 4 DE71-60426A COVER-PANEL STS430 T0.5 TC CM-1829 1 5 DE71-60428A COVER-PANEL/L RESIN-ABS CM-1819 Ni Cr-plating 1 6 DE71-60429A COVER-PANEL/R RESIN-ABS CM-1819 Ni+Cr PLATING 1 7 DE66-20212A BUTTON-START RESIN-ABS CM-1819 Ni Cr-plating 1 8 DE67-40161A WINDOW-DISPLAY RESIN-PMMA 82555 CM-1819 1 9 DE39-40694A WIRE HARNESS-C 230V50Hz CM-1819/29 EUROPE 1

10 DE39-40692A WIRE HARNESS-B 230V50HZ CM-1819/29 EUROPE 1 11 DE39-40113B WIRE HARNESS-F 100V 50/60HZ RE-CH1 1

Exploded Views and Parts List

Page 33

Samsung Electronics

7-6 Parts List - Standard Parts

Parts No. Parts Name Description/Specification Q'ty Remarks

DE60-10012A SCREW-TAP TITE TH + 3 M4 L10 SWR10 ZPC2 TOOTH 1 BACK-COVER DE60-10012A SCREW-TAP TITE TH + 3 M4 L10 SWR10 ZPC2 TOOTH 1 BKT-LAMP DE60-10012A SCREW-TAP TITE TH + 3 M4 L10 SWR10 ZPC2 TOOTH 1 LVT DE60-10012A SCREW-TAP TITE TH + 3 M4 L10 SWR10 ZPC2 TOOTH 1 P/C EARTH DE60-10012A SCREW-TAP TITE TH + 3 M4 L10 SWR10 ZPC2 TOOTH 1 P/CORD DE60-10012A SCREW-TAP TITE TH + 3 M4 L10 SWR10 ZPC2 TOOTH 1 EARTH DE60-10022A SCREW-PH PH + M3 L8 MSWR10 FEFZY 1 DE60-10080A SCREW-WASHER M5 L12 2S 8 HVT DE60-10082H SCREW-A 2S-4X12 TOOTHED 5 DE60-10082H SCREW-A 2S-4X12 TOOTHED 2 BODY-LATCH DE60-10082H SCREW-A 2S-4X12 TOOTHED 3 C-PANEL DE60-10088A SCREW-TAP PH PH M3 L8 FEFZY PLAIN 4 MAIN PCB DE60-10088A SCREW-TAP PH PH M3 L8 FEFZY PLAIN 4 PCB DE60-10098A SCREW-ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 4 DE60-10098A SCREW-ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 2 HANDLE DE60-10098A SCREW-ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 BKT-HIN-L DE60-10098A SCREW-ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 BKT-HIN-U DE60-10098A SCREW-ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 2 BKT-MOTOR DE60-10098A SCREW-ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 2 DUCT-FAN DE60-10098A SCREW-ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 DUCT-MGT-L DE60-10098A SCREW-ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 DUCT-MGT-R DE60-10098A SCREW-ASSY TAP TITE PH TC M4X8 SWRCH18A ZPC2 GLD W 1 MEM EARTH DE60-10121A SCREW-TAP TH 2-4X8 FE FZY (77128-540-081 SA 3 DECORATION DE60-10121A SCREW-TAP TH 2-4X8 FE FZY (77128-540-081 SA 3 DECORATION DE60-10196A SCREW-TAP OH OH+FH + 4 L8 MSWR18C Ni SIL 3 BASE DE60-10196A SCREW-TAP OH OH+FH + 4 L8 MSWR18C Ni SIL 1 COVER-LAMP DE60-10196A SCREW-TAP OH OH+FH + 4 L8 MSWR18C Ni SIL 4 OUTPANEL DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 2 DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 8 BACK-COVER DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 2 BKT-PCB DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 2 C-RESISTOR DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 4 CAVI-BACK DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 1 DUCT-MGT-L DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 1 DUCT-MGT-R DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 2 DUCT-OVEN DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 7 OUTPANEL DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 2 SUP-FAN DE60-10197A SCREW-WASHER TH(WASHER) + 4 L12 MSWR18C N 1 THERMISTOR DE60-20021A BOLT-HEX MSWR3 TAP 5X12S YELLOW 4 HINGE DE60-30015A NUT-FLANGE M5 P0.8 MSWR10 FEFZY 8 MGT

Exploded Views and Parts List

Page 34

Samsung Electronics34

8-2 P.C.B Circuit Diagram (CM-1829 / CM-1429)

P.C.B Circuit Diagrams and Parts List

Page 35

Samsung Electronics

Parts No. Parts Name Description / Specification Q'ty Remarks

DE91-10512A ASSY PCB-MAIN CM-1819 230V50Hz VFD 1 0604-000237 PHOTO-COUPLER TR 200mW DIP-4 ST 2 IC4,5 3002-000198 BUZZER-PIEZO 80dB 4KHz ST 1 BUZ1 3406-000175 SWITCH-ROTARY 28V 10mA DP36T 18.8mm 1 ECD2 3406-001032 SWITCH-ROTARY 28VDC 10mA DP6T 20mm 1 ECD1 3501-001015 RELAY-POWER 24V 21.8mA 16A 1FormA 20mS 10m 3 RY1,2,5 3501-001016 RELAY-MINIATURE 24V 12.5mA 5A 1FormA 8mS 4mS 4 RY3,4,6,7 3711-000315 CONNECTOR-HEADER 1WALL 7P 1R 3.96mm STRAIGHT SN 2 CN3,4 3711-000570 CONNECTOR-HEADER BOX 10P 1R 2.50mm ANGLE SN 1 CN10 3711-000577 CONNECTOR-HEADER BOX 10P 1R 2.5mm STRAIGHT SN 1 CN7 3711-000616 CONNECTOR-HEADER BOX 11P 1R 2.5mm STRAIGHT SN 2 CN12,5 3711-001154 CONNECTOR-HEADER BOX 9P 1R 2.5mm STRAIGHT SN 2 CN11,6 DE07-10088A V.F.DISPLAY SVM-06MM29 REDDISHORG/GRN 6G 5 1 DSP1 DE13-20016A IC-VOLT REGU KA7805A TO-220AB 1A 0/125C 1 RG1 DE39-40692A WIRE HARNESS-B 230V50HZ CM1819/29 EUROPE 1 DE39-40694A WIRE HARNESS-C 230V50Hz CM-1819/29 EUROPE 1 DE39-40695A WIRE HARNESS-D 230V50Hz CM-1819 EUROPE 1 DE61-90178A HOLDER-DIGITRON NY66 CM-1819 1 DSP1 DE91-20592A ASSY PCB AUTO-MAIN 230V50Hz VFD CM-1819 1 0401-001002 DIODE-SWITCHING 1N4148M 100V 200mA 500mW 3nS D 6 D6,7,8,17,18,19

D20(CM-1419) 0402-000137 DIODE-RECTIFIER 1N4007 1000V 1A DO-41 TP 2 D21,22 0402-000559 DIODE-RECTIFIER D4G 400V 1A T-1 12 D1~5,9~14,23 0403-000525 DIODE-ZENER 1N4733A 5.1V 5% 1W DO-41 TP 1 ZD1 0403-000537 DIODE-ZENER 1N4749A 24V 5% 1W DO-41 TP 2 ZD2,3 0501-000388 TR-SMALL SIGNAL KSC815 NPN 400mW TO-92 BK 120- 1 TR2 0504-001014 TR-DIGITAL KSR1005 NPN 300mW 4.7K-10K TO- 12 TR1,3~9,10~13 2001-000003 R-CARBON 330ohm 5% 1/8W AA TP 1.8x3.2mm 2 R31,32 2001-000290 R-CARBON 10Kohm 5% 1/8W AA TP 1.8x3.2mm 15 R3,13,15,19,21~24,

28~30,36,37,44,45 2001-000405 R-CARBON 180ohm 5% 1/8W AA TP 1.8x3.2mm 1 R33 2001-000429 R-CARBON 1Kohm 5% 1/8W AA TP 1.8x3.2mm 9 R8,12,25~27,

34,35,42,43 2001-000435 R-CARBON 1Mohm 5% 1/8W AA TP 1.8x3.2mm 1 R5 2001-000577 R-CARBON 2Kohm 5% 1/8W AA TP 1.8x3.2mm 2 R4,7 2001-000613 R-CARBON 3.9Kohm 5% 1/8W AA TP 1.8x3.2m 2 R16,20 2001-000780 R-CARBON 470ohm 5% 1/8W AA TP 1.8x3.2mm 3 R1,2,11 2001-000786 R-CARBON 47Kohm 5% 1/8W AA TP 1.8x3.2mm 2 R50,51 2001-001077 R-CARBON(S) 150ohm 5% 1/2W AA TP 2.4x6.4mm 2 R09,10 2003-000236 R-METAL OXIDE 270ohm 5% 2W AA TP 6x16mm 1 R06 2003-000462 R-METAL OXIDE(S) 10Kohm 5% 2W AA TP 4x12mm 8 R38~41,46~49 2004-000195 R-METAL 100Kohm 1% 1/8W AA TP 1.8x3.2m 1 R18 2004-000729 R-METAL 3.9Kohm 1% 1/8W AA TP 1.8x3.2m 1 R17 2011-000582 R-NETWORK 47Kohm 5% 1/8W A SIP 9P TP 2 AR1,2 2202-000121 C-CERAMIC,MLC-AXIAL 100pF 10% 50V Y5P TP 1.9x3.5 5 C16,17,18,19,20 2202-000780 C-CERAMIC,MLC-AXIAL 100nF +80-20% 50V Y5V TP 3.5x1 6 C4,6,7,9,15,21 2202-002042 C-CERAMIC,MLC-AXIAL 22pF 5% 50V SL TP(26mm) 1.9x3. 2 C10,11

8-3 P.C.B Parts List (CM-1819/1419)

P.C.B Diagrams and Parts List

Page 36

Samsung Electronics

Parts No. Parts Name Description / Specification Q'ty Remarks

2401-000180 C-AL 1000uF 20% 35V GP 16x25x7.5m 1 C01 2401-000466 C-AL 10uF 20% 35V GP TP 5x7 5 1 C05 2401-000598 C-AL 1uF 20% 50V GP TP 4x7 5 2 C08,C14 2401-000914 C-AL 22uF 20% 16V TP 5x11 5mm 1 C12 2401-000941 C-AL 22uF 20% 25V GP 5x11mm 5mm 1 C18 2401-001268 C-AL 4.7uF 20% 50V GP 5x11mm 5mm 1 C13 2401-001362 C-AL 470uF 20% 16V GP 10x12.5mm 5 1 C03 2401-001412 C-AL 470uF 20% 35V GP TP 10x16 5mm 1 C02 2801-003214 CRYSTAL-UNIT 4.194304MHz 50ppm 28-AAA 12pF 1 XTL1 3404-000282 SWITCH-TACT 12Vdc 50mA 120+-30gf 6.2x3.6mm 4 SW1,2,3,4 3711-000203 CONNECTOR-HEADER 1WALL 3P 1R 3.96mm ANGLE SN 1 CN14 3711-000940 CONNECTOR-HEADER BOX 4P 1R 2.5mm STRAIGHT SN 1 CN1 3711-000999 CONNECTOR-HEADER BOX 5P 1R 2.50mm STRAIGHT SN 1 CN2 DE13-20009A IC KA7533 DIP 1 IC2 DE39-60001A WIRE-SO COPPER PI0.6 SN T 52MM TAPING_WIRE 35 J4~38

J02(CM-1419)

DE41-10441A P.C.B-MAIN FR-1 T1.6 W197 L296 CM-1819 1 DE93-30528A ASSY CONTROL-PANEL - CM1419/1819 1 DE64-10143A KNOB-POWER RESIN-ABS CM-1819 Ni Cr-plating 1 DE64-10144A KNOB-TIMER RESIN-ABS CM-1819 Ni Cr-plating 1 DE66-20211A BUTTON-SELECT RESIN-ABS CM-1829 Ni Cr-plating 1 DE66-20212A BUTTON-START RESIN-ABS CM-1819 Ni Cr-plating 1 DE67-40161A WINDOW-DISPLAY RESIN-PMMA 82555 CM-1819 1 DE70-30126A PANEL-BASE RESIN-ABS ME CM-1819 1 DE71-60427A COVER-PANEL STS430 T0.5 ME CM-1829 1 DE71-60428A COVER-PANEL/L RESIN-ABS CM-1819 Ni Cr-plating 1 DE71-60429A COVER-PANEL/R RESIN-ABS CM-1819 Ni+Cr PLATIN 1 DE93-90112A ASSY-B/RESISTOR CM-1819/29 2 DE39-40704A WIRE HARNESS-G CM-1819/29 2 DE59-90057A R-CEMENT RW 10C 15-J 2 DE61-50271A BRACKET-RESISTOR SK5 2

8-3 P.C.B Parts List (CM-1819/1419 continued)

P.C.B Diagrams and Parts List

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Samsung Electronics

Parts No. Parts Name Description / Specification Q'ty Remarks

DE91-10513A ASSY PCB-MAIN CM-1829 230V50Hz VFD 1 0604-000237 PHOTO-COUPLER TR 200mW DIP-4 ST 2 IC4,5 3002-000198 BUZZER-PIEZO 80dB 4KHz ST 1 BUZ1 3501-001015 RELAY-POWER 24V 21.8mA 16A 1FormA 20mS 10m 3 RY1,2,5 3501-001016 RELAY-MINIATURE 24V 12.5mA 5A 1FormA 8mS 4mS 4 RY3,4,6,7 3708-000525 CONNECTOR-FPC/FC/PIC 10P 2.54mm STRAIGHT SN 1 CN8 3711-000315 CONNECTOR-HEADER 1WALL 7P 1R 3.96mm STRAIGHT SN 2 CN3,4 3711-000616 CONNECTOR-HEADER BOX 11P 1R 2.5mm STRAIGHT SN 2 CN12,5 3711-001154 CONNECTOR-HEADER BOX 9P 1R 2.5mm STRAIGHT SN 2 CN11,6 DE07-10088A V.F.DISPLAY SVM-06MM29 REDDISHORG/GRN 6G 5 1 DSP1 DE13-20016A IC-VOLT REGU KA7805A TO-220AB 1A 0/125C 1 RG1 DE39-40113B WIRE HARNESS-F 100V 50/60HZ RE-CH1 1 DE39-40692A WIRE HARNESS-B 230V50HZ CM1819/29 EUROPE 1 DE39-40694A WIRE HARNESS-C 230V50Hz CM-1819/29 EUROPE 1 DE61-90178A HOLDER-DIGITRON NY66 CM-1819 1 DSP1 DE91-20593A ASSY PCB AUTO-MAIN 230V50Hz VFD CM-1829 1 0401-001002 DIODE-SWITCHING 1N4148M 100V 200mA 500mW 3nS D 8 D6,7,8,15~19

D20(CM-1429)

0402-000137 DIODE-RECTIFIER 1N4007 1000V 1A DO-41 TP 2 D21,22 0402-000559 DIODE-RECTIFIER D4G 400V 1A T-1 12 D1~5,9~14,23 0403-000525 DIODE-ZENER 1N4733A 5.1V 5% 1W DO-41 TP 1 ZD1 0403-000537 DIODE-ZENER 1N4749A 24V 5% 1W DO-41 TP 11 ZD2,3 0501-000388 TR-SMALL SIGNAL KSC815 NPN 400mW TO-92 BK 120- 1 TR2 0504-001014 TR-DIGITAL KSR1005 NPN 300mW 4.7K-10K TO- 12 TR1,3~13 1103-001085 IC-EEPROM 24LC02B 256x8BIT DIP 8P 300MIL 1 IC3 2001-000003 R-CARBON 330ohm 5% 1/8W AA TP 1.8x3.2mm 11 R31,32 2001-000290 R-CARBON 10Kohm 5% 1/8W AA TP 1.8x3.2mm 10 R3,13~15,19,

21~24,36,37 2001-000405 R-CARBON 180ohm 5% 1/8W AA TP 1.8x3.2mm 1 R33 2001-000429 R-CARBON 1Kohm 5% 1/8W AA TP 1.8x3.2mm 4 R08,12,34,35 2001-000435 R-CARBON 1Mohm 5% 1/8W AA TP 1.8x3.2mm 1 R05 2001-000577 R-CARBON 2Kohm 5% 1/8W AA TP 1.8x3.2mm 2 R04,07 2001-000613 R-CARBON 3.9Kohm 5% 1/8W AA TP 1.8x3.2m 2 R16,20 2001-000780 R-CARBON 470ohm 5% 1/8W AA TP 1.8x3.2mm 3 R01,02,11 2001-000786 R-CARBON 47Kohm 5% 1/8W AA TP 1.8x3.2mm 2 R50,51 2001-001077 R-CARBON(S) 150ohm 5% 1/2W AA TP 2.4x6.4mm 2 R09,10 2003-000236 R-METAL OXIDE 270ohm 5% 2W AA TP 6x16mm 1 R06 2003-000462 R-METAL OXIDE(S) 10Kohm 5% 2W AA TP 4x12mm 8 R38~41,46~49 2004-000195 R-METAL 100Kohm 1% 1/8W AA TP 1.8x3.2m 1 R18 2004-000729 R-METAL 3.9Kohm 1% 1/8W AA TP 1.8x3.2m 1 R17 2011-000582 R-NETWORK 47Kohm 5% 1/8W A SIP 9P TP 2 AR1,2 2202-000121 C-CERAMIC,MLC-AXIAL 100pF 10% 50V Y5P TP 1.9x3.5 5 C16~20 2202-000780 C-CERAMIC,MLC-AXIAL 100nF +80-20% 50V Y5V TP 3.5x1 6 C04,6,7,9,15,21 2202-002042 C-CERAMIC,MLC-AXIAL 22pF 5% 50V SL TP(26mm) 1.9x3. 2 C10,11

8-4 P.C.B Parts List (CM-1829/1429)

P.C.B Diagrams and Parts List

Page 38

Samsung Electronics

Parts No. Parts Name Description / Specification Q'ty Remarks

2401-000180 C-AL 1000uF 20% 35V GP 16x25x7.5m 1 C01 2401-000466 C-AL 10uF 20% 35V GP TP 5x7 5 1 C05 2401-000598 C-AL 1uF 20% 50V GP TP 4x7 5 2 C08,14 2401-000914 C-AL 22uF 20% 16V TP 5x11 5mm 1 C12 2401-000941 C-AL 22uF 20% 25V GP 5x11mm 5mm 1 C18 2401-001268 C-AL 4.7uF 20% 50V GP 5x11mm 5mm 1 C13 2401-001362 C-AL 470uF 20% 16V GP 10x12.5mm 5 1 C03 2401-001412 C-AL 470uF 20% 35V GP TP 10x16 5mm 1 C02 2801-003214 CRYSTAL-UNIT 4.194304MHz 50ppm 28-AAA 12pF 1 XTL1 3404-000282 SWITCH-TACT 12Vdc 50mA 120+-30gf 6.2x3.6mm 2 SW5,6 3711-000203 CONNECTOR-HEADER 1WALL 3P 1R 3.96mm ANGLE SN 1 CN14 3711-000881 CONNECTOR-HEADER BOX 3P 1R 2.5mm STRAIGHT SN 2 CN13,9 3711-000940 CONNECTOR-HEADER BOX 4P 1R 2.5mm STRAIGHT SN 1 CN1 3711-000999 CONNECTOR-HEADER BOX 5P 1R 2.50mm STRAIGHT SN 1 CN2 DE13-20009A IC KA7533 DIP 1 IC2 DE39-60001A WIRE-SO COPPER PI0.6 SN T 52MM TAPING_WIRE 34 J04~06,08~38

J02(CM-1429)

8-4 P.C.B Parts List (CM-1829/1429 continued)

P.C.B Diagrams and Parts List

Page 39

Samsung Electronics

9. Wiring Diagram & Operating Sequence

9-1 Wiring Diagram (CM-1819/1419/1829/1429)

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Samsung Electronics

9-2 Description of Operating Sequence

When the oven is set to power level of 100%, 70% or 50%

When the oven is operating under the power level of 100%, 70% or 50%, the coil of power relay 1 and 2 are energized intermittently by ON and OFF cycle of 30 seconds in order to supply power source to the High Voltage Transformer and thus to oscillate the magnetron.

When the oven is set to DEFROST power position

When the oven is set to DEFROST power position, the coil of power relay 1 and 2 is programmed to operate not together but alternately. That means power relay 1 should not work when the power relay 2 does(or relay 2 should not work when the power relay 1 does). The power realy 1 is energized for 15 seconds and then the power relay 2 is energized for 15 seconds in turn. One complete ON and OFF cycle time of the power relay 1 and 2 is 30 seconds.

The relation between indications on the display window and the output power of the microwave oven is as shown in figure below.

Wiring Diagram & Operating Sequence

CM-1819 / CM-1829 CM-1419 / CM-1429

c(d): 20% -> opt open - 7sec(8sec) 25% -> opt short - 9sec(6sec)

10% -> opt open - 4sec(11sec) 13% -> opt short - 5sec(10sec)

e: 15sec

Note: One second included as a time for starting the magnetron oscillation

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Samsung Electronics

9-2 Description of Operating Sequence (continued)

Initial operating status of Power Relay when the START button is pressed.

Relays are designed to work as shown in the figure below. When the oven is set to DEFROST power position, Inrush Relay1 and Power Relay1 are programmed to work with Inrush Relay2 and Power Relay2 not simultaneously but alternately.

Wiring Diagram & Operating Sequence

Operating

Operating Time of Relays (100%, 70%, 50% power)

Sequence

NOTE :

LAMP: Lamp Relay (250V 5A) MAIN: Main Relay (250V 16A) VENT: Ventilation Motor Relay (250V 5A) IR1: Inrush Relay1 (250V 5A) IR2: Inrush Relay2 (250V 5A) P1: Power Relay1 (250V 16A) P2: Power Relay2 (250V 16A)

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Samsung Electronics

9-2 Description of Operating Sequence (continued)

High Voltage Transformer input power sensing circuitry

Refers to the circuitry that detects and check if the input power is correctly supplied to the primary terminal of High Voltage Transformer when the microwave oven is operating. If any abnormal condition(eg. Micro S/W, Relay open) is detected, the error code (E41, E42) shows on the display window. When the error code appears in the display window, check the waveform(A), (B), (C),or (D). In case of Power Relay 1 (RY2), check the waveform (A), (B) below. In case of Power Relay 2 (RY5), check the waveform (C), (D) below.

Wiring Diagram & Operating Sequence

Samsung CM-1819, CM-1829, CM-1419, CM-1429 Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual