Maytag AMC5101AAB/W Operating instructions

MICROWAVE OVEN

MODEL : MW1030WE

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 Diagrplodeams

9. Schematic Diagrams

10. Reference

SELA-P

Contents

1. Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1-1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1-2 Special Servicing Precautions (Continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1-3 Special High Voltage Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2-1 Table of Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3. Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

3-1 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

3-2 Features & External Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3-3 Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

4. Disassembly and Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

4-1 Replacement of Magnetron, Motor Assembly and Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

4-2 Replacement of High Voltage Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

4-3 Replacement of Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4-3-1 Removal of Door “C” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4-3-2 Removal of Door “E” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4-3-3 Removal of Key Door & Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4-3-4 Reassembly Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4-4 Replacement of Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4-5 Replacement of Drive Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4-6 Replacement of Control Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

4-6-1 Removal of Control Box Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

4-6-2 Removal of Ass’y P.C.B Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

4-6-3 Removal of Window Display & Membrane Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

5. Alignment and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5-1 High Voltage Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5-2 Low Voltage Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5-3 Magnetron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5-4 High Voltage Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5-5 High Voltage Diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5-6 Main Relay and Power Control Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5-7 Adjustment of Primary Switch, Door Sensing Switch and Monitor Switch . . . . . . . . . . . . . . . . . . . . . . . . .12

5-8 Output Power of Magnetron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

5-9 Microwave Heat Distribution - Heat Evenness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

5-10 Procedure for Measurement of Microwave Energy Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

5-11 Check for Microwave Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

5-12 Note on Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

5-13 Leakage Measuring Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

6. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

6-1 Electrical Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

7. Exploded Views and Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

7-1 Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

7-2 Main Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

7-3 Control Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

7-4 Standard Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

8 P.C.B Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

8-1

P.C.B Diagrams

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

8-2 P.C.B Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

9. Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

9-1 Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

10. Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

10-1 Model name standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

10-2 Customer inquiry cases and countermeasures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

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PRECAUTIONS TO BE OBSERVED BEFORE AND

DURING SERVICING TO AVOID POSSIBLE

EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

(a) Do not operate or allow the oven to be operated with the door open.

(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary:

(1) Interlock operation,

(2) proper door closing,

(3) seal and sealing surfaces (arcing, wear, and other damage),

(4) damage to or loosening of hinges and latches,

(5) evidence of dropping or abuse.

(c) Before turning on microwave power for any service test or inspection within the microwave generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment, integrity, and connections.

(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual before the oven is released to the owner.

(e) A Microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner.

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 immediately.

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 emission 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, door sensing switch and power relay, 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. 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.

- 1 -

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.

H. V. Capacitor

Short

H. V. Diode

Touch chassis ground first then short to the high voltage capacitor terminal by using screwdriver or jumper wire.

Fig. 1-1 Discharging High Voltage Capacitor

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 uninsulated tool during operation.

PRECAUTION

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

- 2 -

2. Specifications

2-1 Table of Specifications

TIMER

POWER SOURCE

POWER CONSUMPTION

OUTPUT POWER

OPERATING FREQUENCY

MAGNETRON

COOLING METHOD

OUTSIDE DIMENSIONS(mm)

SHIPPING WEIGHT

99 SECOND

120V 60Hz, AC

MICROWAVE : 1,500W

1000W(10LEVEL POWER)

2,450MHz

OM75P(31)ESS

COOLING FAN MOTOR

517(W) x 297(H) x 379(D)

NET 13.65kg

GROSS 15.56kg

- 3 -

3. Operating Instructions

3-1 Control Panel

4

5

6

7

8

9

1

2

3

10

11

12

1. One Minute +

2. Sensor Cook Buttons

3. Auto Defrost

4. Auto Cook Menus

5. Power Level

6. Kitchen Timer

7. Clock

8. Sound

9. Pause/Cancel

10. Number Bottons

11. More/Less

12. Start

- 4 -

3-2 Features & External Views

Door Latches

Door Ventilation Holes Light Safety Interlock Holes

Control Panel

Open Door Push

Glass Tray Guide Roller

517mm

- 5 -

379mm

3-3 Accessory

Depending on the model that you have purchased, you are supplied with several accessories that can be used in a variety of ways.

1. Coupler, already placed over the motor shaft in the base of the oven.

Purpose : The coupler rotates the turntable.

2. Guide Roller, to be placed in the centre of the oven.

Purpose : The roller ring supports the turntable.

3. Glass Tray, to be placed on the roller ring with the centre fitting to the coupler.

Purpose : The turntable serves as the main cooking surface; it can be easily re

moved for cleaning.

DO NOT operate the microwave oven without the roller ring and turntable.

- 6 -

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 air cover.

3. Remove the air cover.

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

5. Take out the magnetron very carefully.

6. Remove nuts from the back panel.

7. Take out the fan motor.

8. 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.

4-2 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 remove 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.

- 7 -

4-3 Replacement of Door Assembly

4-3-1 Removal of Door “C”

Insert flat screwdriver into the gap between Door “A” and Door “C” to remove Door “C”. Be careful when handling Door “C” because it is fragile.

Then remove the door assembly.

Door "A"

Door "C"

4-3-2 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.

4-3-3 Removal of Key Door & Spring

Remove pin hinge from Door “E”

Detach spring from Door “E” and key door.

- 8 -

Door "E"

4-3-4 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. When 20A fuse blows out by the operation of interlock monitor switch failure, replace the primary interlock switch, door sensing switch, monitor switch and power relay.

3. 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 from oven cavity, disconnect power..

2. Remove turn table motor cover from case bottom

CAUTION : Remove sharp edge after cover removal.

3. Disconnect leads from motor..

4. Remove the screws securing motor to bottom of over

cavity and lift out the motor.

5. When replacing the motor, be sure to remount it in the correct position.

NOTE : The shaft of motor should fit tip coupler.

6. Screw the motor to bottom of oven cavity.

7. Connect leads to the drive motor.

8. Screw the drive motor cover to the base plate with a screw driver.

NOTE : Bring the spare screw from service center.

Drive Motor Cover

COVER FIXING SCREW :

MACHINE SCREW(6006-001170)

Drive Motor

Base Plate

- 9 -

4-6 Replacement of Control Circuit Board

4-6-1 Removal of Control Box Assembly

1. Disconnect the connectors from the control box assembly.

2. Remove screws securing the control box assembly.

3. Remove the knobs of the control box A’ssy.

4. Remove the screw securing the timer.

CONTROL-BOX

4-6-2 Removal of Ass’y P.C.B Assembly

1. Remove screws securing the control circuit

board

2. Lift up the control circuit board from the Ass’y

control box.

SCREW

Screw

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 double faced 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.

Membrane

Panel

- 10 -

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 = 20°C)

Approx. 142Ω

Approx. 0Ω

Approx. 1.7Ω

Filament Terminals

Primary

Terminals

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.

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.

Terminals

1~2(Input)

3~4(Output7V)

5~6(Output17V)

Resistance

SLV-4290U

379Ω

10.23Ω

31.91Ω

Gasket Plate

Magnetron Antenna

Secondary

Terminal

Cooling Fins

- 11 -

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.

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 KΩ 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.

6.

Interlock Switch Replacement - When replacing faulty switches, be sure switch mounting tabs are not bent, broken or otherwise deficient in their ability to secure the switches in place.

Body Latch

Door Sensing

Switch

(Secondary

Interlock S/W)

Primary Interlock S/W

Monitor switch (COM-NC)

Door Sensing S/W

(Secondary Interlock S/W)

Primary

Interlock Switch

Interlock Monitor

Switch

Lever Switch

Door Open Door Closed

∞

0

∞

0

∞

0

- 12 -

5-8 Output Power of Magnetron

CAUTION

MICROWAVE RADIATION

PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERA-

TOR 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 (“T

1

”, 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 44seconds 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 (“T

2

”).

5. Subtract T

1

from T

2

. This will give you the water temperature rise. (∆T)

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

Output Power = 4.187 x 1000 x ∆T+0.55xMcx(T

2

-T

1

)

41

44 : Heating Time (sec)

41 : Counting Time (sec)

4.187 : Coefficient for Water

1000 : Water (cc)

∆T : Temperature Rise (T

2

-T

1

)

Yo : Room Temperature

Mc : Cylindrical borosilicate glass weight

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 91

times the of centigrade temperature .

5-9 Microwave Heat Distribution - Heat Evenness

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 off 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 cooking tray as illustrated in figure below. Start heating.

5. After heating for 2 minutes, measure the water temperature in each beaker.

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

D

D

Minimum

Temperature Rise

Heat Distribution = X 100(%)

Maximum

Temperature Rise

D/4

D/4

The result should exceed 65%.

D/4

Cooking Tray

Beaker

D/4

- 13 -

5-10 Procedure for Measurement of Microwave Energy Leakage

1. Pour 275±15cc of 20±5°C(68±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 5cm to any metal. If it gets closer than 5cm, 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

5-11 Check for Microwave Leakage

1. Remove the outer panel.

2. Pour275±15cc of 20±5°C(68±9°F) 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 near 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 reading should be less than 4mW/cm 2 .

5-12 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.

5-13 Leakage Measuring Procedure

5-13-1 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 2 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 CENTER

5-13-2 At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer.

- 14 -

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 Malfunction

SYMPTOMS

Oven is dead.

Fuse is OK.

No display and no operation at all..

No display and no operation at all. Fuse is blown.

Oven does not accept key input (Program).

Timer starts countdown but no microwave oscillation.

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

CAUSE CORRECTIONS

1. Open or loose lead wire harness

2. Open thermal cutout (Magnetron)

3. Open low voltage transformer

4. Defective Ass’y PCB

1. Shorted lead wire harness

2. Defective primary latch switch

(NOTE 1)

3. Defective monitor switch (NOTE1)

4. Shorted H.V.Capacitor

5. Shorted H.V.Transformer (NOTE2)

Check fan motor when thermal cutout is defective.

Check Ass’y PCB when L.V.T is defective.

Check adjustment of primary, interlock montor, power relay, door sensing switch.

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 H.V.Transformer 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.

1. Off-alignment of latch switches

2. Open or loose connection of high

voltage circuit especially magnetron filament circuit

Replace PCB main.

Replace the motor.

Replace the timer.

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, Magnetron

4. Open or loose wiring of power relay


6. Defective power relay or Ass’y PCB

- 15 -

6-1 Electrical Malfunction(continued)

SYMPTOMS

Oven lamp and fan motor turn on.

Oven can program but timer does not start.

CAUSE

1. Misadjustment or loose wiring

of primary latch switch


1. Open or loose wiring of

secondary interlock switch

2. Off-alignment of primary

interlock

CORRECTIONS

Adjust door and latch switches.

Adjust door and interlock switches.

Microwave output is low;.

Oven takes longer time to cook food.

1. Decrease in power source

voltage.


magnetron filament circuit.

(Intermittent oscillation))

3. Aging of magnetron

Consult electrician.

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

Noise from the turntable motor when it starts to operate.

Defective Ass’y PCB

1. Loose fan and fan motor

2. Loose screws on

H.V.Transformer

3. Shorted H.V.Diode


turntable motor.

2. Defective turntable motor.

1. Open or loose wiring of primary

interlock switch

2. Operation of thermal

cutout(Magnetron)

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.

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.

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.

Noise may result from the motor.

Replace turntable motor.

- 16 -

7. Exploded Views and Parts List

7-1 Exploded Views

C004

D005

D002

D003

D004

M001

D006

M019

M015

M093

M029

D011

D049

D007

H018

M023

M022

M020

W002

C082

M048

M051

M049

M036

B006

M099

B004

B018

B001 M037

M038

B002

M039

B009

M040

M035

C009

C005

C070

C003

M047

M041

C007

C006

T001

T017

M034

- 17 -

7-2 Main Parts List

Level No.

1-1 M041

1-1 M039

1-1 M019

1-1 M036

1-1 M038

1-1 M049

1-1 M015

1-1 M029

1-1 M093

1-1 M048

1-1 M047

1-1 M040

1-1 M037

1-1 M051

(S.N.A : SERVICE NOT AVAILABLE)

Code No.

0402-001554

2501-001016

3601-001198

Description

HVDIODE-RECTIFIER

C-OIL

FUSE-CARTRIDGE

DE07-00006A LAMP-INCANDESCENT

DE26-00097A TRANS H.V

Specification

HV03-12T01,12000V,0.4A

950nF,2.1KV,BK,35x54x80,20mm

250V,20A,SLOW-BLOW,CERAMI

-,125V,-,25W,ORG,TERMI

SHV-UT10KA,120V,60HZ,2250V,3.2

DE31-10154A MOTOR SYNCHRONOUS M2HJ49ZR02,ST-16,50/60

DE39-20146E ASSY POWER CORD MSP-36,-,-,-,-,-,SPT-2 3

DE47-20032B THERMOSTAT PW2N,-,-,30,0,85/75,-,-,-,187

DE47-40025A FUSE-HOLDER

DE61-00557A BASE-PLATE

DE61-40066A FOOT

DE61-50106A BRACKET-HVC

DE63-00208A COVER-AIR

DE63-00209A COVER-MGT

KFSN-L-16,15A,NYLON#66,5G,-,

5TH-1.0,SGCC,T0.6,W565,L345,-

-,PP,-,BLK,-,-,-

-,SECC,T0.8,W31,L125.8,-,-

5TH-1.0,PP,-,-,-,-,-,-,-

5TH-1.0,PP,T2.0,-,-,-,-,-,-

1-1 M099

1-1 M034

1-1 M001

1-1 T001

1-1 B018

1-2 B002

1-2 B001

DE66-90113A LEVER-DOOR

DE67-00182A COUPLER

DE70-00011V PANEL-OUTER

DE74-20015G TRAY-COOKING

DE96-00115A ASSY BODY LATCH

3405-001033

3405-001034

SWITCH-MICRO

SWITCH-MICRO

PP(TB53-GH41),T2.5,-,-,12g,NT

5TH-1.0,PPS,-,-,-,-

C/STELT0.6W380.3L1085.2NC-2K

-,T6,3RD 10

MW850WA NC2000 BUTTON

125/250VAC 16A,200GF,SPSTNC

125/250VAC,16A,200GF,SPST-N

1-2 B004

1-2 B009

1-2 B006

1-1 M020

1-2 M023

1-2 H018

1-2 M022

1-1 W002

3405-001042

DE66-00088B

DE72-00138A

DE96-00305A

DE31-10185B

DE31-90057A

SWITCH-MICRO

LEVER SWITCH

BODY-LATCH

ASSY-MOTOR FAN

MOTOR-FAN

BLADE-FAN

1-1 T017 DE97-00222A ASSY-GUIDE ROLLER

1-1 M035 OM75P(31)ESNL ASSY-MGT

DC 24V,0.3A,150gf,-

-,POM,-,-,-,-,-,-

PP WHT NC2000 0.6/0.8/1.2

SMF-5THUA,120V60HZ,2450,5

SMF-3RDUA1,120V60Hz,-,-,2300rp

PP,T1.5,-,3RD-W,-,-,-

DE63-00210A COVER-BLOWER 5TH-1.0,PP,T1.5,-,-,-,-,-,-

DE96-00381A ASSY-WIRE HARNESS A AMC5101,120V/60HZ

NC1.2 SPS(C832)D16.0,B

OM75P(31)ESNL

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

1

1

1

1

1

1

1

1

1

Q’ty SA/SNA

1 SA

1

1

SA

SA

1

1

SA

SA

SA

SA

SA

Remark

CVT TOP

(NEAR MGT)

SA

SA

SA

SNA

SA

SA CVT INSIDE

RIGHT

- 18 -

7-3 Control Parts List


Level No.

1-1 D049

1-2 D005

1-2 D007

1-2 D011

1-2 D006

Code No.

Description

DE94-00080Z ASSY DOOR

DE01-00118A FILM-DOOR

DE61-70128A SPRING-KEY

DE64-40006F DOOR-KEY

DE64-40012A DOOR-C

Specification

MW1030WC/XAA,PURE-WHT,120V/60H

MW5896W,-,-,L185,T0.15,W304,-,

BLUING,HSW3,PI0.6,PI0.6,D5,D5

POM(F20-02),-,-,12G,BLK,MW7897G

-,RESIN-PP(TB53),BLACK,-,-,-,CE94

1-2 D002 DE64-40317M DOOR-A

1-2 D003 DE67-20197D SCREEN-DOOR

1-2 D004 DE94-00910A

MW1030WA,ABS(GENERAL)WHT,T2.0

NC1

MW1030WC,PET,T0.25,W210.4,L3

ASSY DOOR-E(COATING) MW1030WC/XAA,BLK,5T

1-1 C082 DE94-01247C ASSY CONTROL-BOX

1-2 C004 DE34-00190Y SWITCH MEMBRANE

120V60HZ,MW1030WE/XAP,W

MW1030WE/XAO,-,-,PET,-,1

1-2 C070

1-2 C006

1-2 C007

1-2 C009

DE61-00665A

DE61-70076A

DE66-20275A

DE67-40179A

HOLDER-LED

SPRING-BUTTON

BUTTON-PUSH

WINDOW-DISPLAY

1-2 C005 DE72-70202A CONTROL PANEL

1-2 C003 RAS-D2LED3-00 ASSY PCB PARTS

ALL-0.8,PP,-,-,-,BLACK,LED-BA

-,HSWR,PI0.6,PI0.6,-,-,-,-

3RD-W S1 MW5592W,-,-,-,-,9g

SAN,T2.0,-,-,SMOG,-,3RD-W

MWA19AW,ABS,-,-,-,140g,WHT

AMC5080AAW,120V60HZ

1

1

1

1

1

1

1

1

1

1

1

1

1

Q’ty SA/SNA Remark

1 SA

1

1

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SA

- 19 -

7-4 Standard Parts List


Level

1-1

1-1

1-1

Code No.

6002-001320

6006-001170

6006-001170

Description

SCREW-TAPPING

SCREW-TAPPING

SCREW-TAPPING

Specification

TH,+,2S,M4,L8,PASS,STS304,-

TH,+,WT,TC,M4,L10,ZPC(YEL),SWRCH18A,-

TH,+,WT,TC,M4,L10,ZPC(YEL),SWRCH18A,-

1-1 6006-001176 SCREW-TAPTITE WT,PH,+,M4,L8,ZPC(YEL)

1-1 DE60-10051A SCREW-TAPPING -,-,MSWR,-,PH,M4,-,L6,-,-

1-1 DE60-10080A SCREW-TAPPING -,-,-,-,M5,L12,-,2S,-,-

1-1 DE60-10080A SCREW-TAPPING -,-,-,-,M5,L12,-,2S,-,-

1-1

1-1

DE60-10082I SCREW-A

DE60-10082I SCREW-A

-,-,-,-,2S-4X12,FEFZY,-,-,-,-

-,-,-,-,2S-4X12,FEFZY,-,-,-,-

1-1

1-1

1-1

1-1

DE60-10082I SCREW-A

DE60-10082I SCREW-A

DE60-10082I SCREW-A

DE60-10082I SCREW-A

-,-,-,-,2S-4X12,FEFZY,-,-,-,-

-,-,-,-,2S-4X12,FEFZY,-,-,-,-

-,-,-,-,2S-4X12,FEFZY,-,-,-,-

-,-,-,-,2S-4X12,FEFZY,-,-,-,-

1-2

1-2

6002-000630

6002-000630

SCREW-TAPPING

SCREW-TAPPING

PH,+,-,2S,M3,L8,ZPC(YEL),SWRCH18A,-

PH,+,-,2S,M3,L8,ZPC(YEL),SWRCH18A,-

1-2 DE60-10193A SCREW-TAPPING -,YEL,MSWR18,FEFZY,TH,M4,-,L2

3

2

2

1

1

2

4

4

2

3

2

Q’ty SA/SNA

1 SNA

1

1

1

1

SNA

SNA

SNA

SA

SA

SA

SA

SA

SA

SA

SA

SA

SNA

SNA

SA

Remark

PANEL OUTER RIGHT

MEM EARTH

P.CORD EARTH

BKT HVC & DIODE

DRIVE MOTOR

HVT

MGT

BASE PLATE

BODY LATCH

C.BOX

COVER AIR

FAN MOTOR

PANEL OUTER

HOLDER-PCB

PCB

- 20 -

8 P.C.B Diagrams

8-1 P.C.B Diagrams

(

This Document can not be used without Samsung’s authorization)

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��

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- 21 -

��

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8-2 P.C.B Parts List

1-5

1-5

1-5

1-5

1-4

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-5

1-4

1-4

1-3

1-3

1-3

1-3

Level

1-2

1-3

1-3

1-3

1-3

1-3

1-4

1-4

1-4

1-4

Code No.

Description

RAS-D2LED3-00 ASSY PCB PARTS

3501-000264

3501-001154

3708-001551

3711-000940

RELAY-POWER

RELAY-MINIATURE

CONNECTOR-FPC/FC/PIC

CONNECTOR-HEADER

3711-004143 CONNECTOR-HEADER

DE07-00074K LED DISPLAY

DE26-00110A TRANS L.V

DE30-20016A BUZZER

DE92-01538A ASSY PCB AUTO

1203-001037 IC-VOLTAGE REGULATOR

2203-000192 C-CERAMIC,CHIP

DE09-00424A IC MICOM

2203-000444 C-CER,CHIP

DE92-01650A ASSY PCB-IMT

0401-001002 DIODE-SWITCHING

0402-001103

0504-001044

0504-001178

1405-000001

DIODE-RECTIFIER

TR-DIGITAL

TR-DIGITAL

VARISTOR

2001-000273

2001-000290

2001-000429

2001-000577

R-CARBON

R-CARBON

R-CARBON

R-CARBON

2001-000734

2001-000786

2202-000252

2401-000151

2401-000911

R-CARBON

R-CARBON

C-CERAMIC,MLC-AXIAL

C-AL

C-AL

2401-002075

2401-003107

C-AL

C-AL

2802-000188 RESONATOR-CERAMIC

DE13-20009A IC

DE39-60001A WIRE-SO COPPER

DE41-00300A PCB-MAIN

2007-000941

2007-000033

R-CHIP

R-CHIP


Specification

AMC5080AAW,120V60HZ

12VDC,-,16000MA,-,9MS,5MS

12VDC,200MW,3000MA,1FORM

14P,1.25mm,STRAIGHT

BOX,4P,1R,2.5mm,STRAIGH

BOX,2P,1R,5mm/2.5mm,

CSE-4046G-10,2&3,LED1-10,40

SLV-D2LEDU,120V,60HZ,13V,0.18A

CBE2220BA,STICK,-,-,-,-,-,-,-

-,-,RAS-D2LED3-00,120V60HZ

78L05,SOT-89,3P,185

100nF,+80-20%,50V,Y5V,TP,

TMP87CH47U-5HR0,AMC5101AAB,44PI

1nF,10%,50V,X7R,TP,2012,-

-,RAS-D2LED3-00,-,-,120V60H

1N4148M,100V,200mA,DO-34

1T4,400V,1A,TS-1,TP

KRA226M,PNP,400MW,2.2K/10K,TO

KRC246M,NPN,400MW,2.2K/10KOHM

470V,1250A,14x7.5mm,TP

100KOHM,5%,1/8W,AA,TP,1.8X3.2MM

10KOHM,5%,1/8W,AA,TP,1.8X3.2MM



4.7KOHM,5%,1/8W,AA,TP,1.8X3.2MM


4.7nF,10%,50V,X7R,TP

1000uF,20%,25V,GP,TP,10x20,5

22uF,20%,16V,GP,TP,5x7,5

4.7uF,20%,50V,GP,TP,5x11,5

47uF,20%,16V,GP,TP,5x7,5

8MHz,0.5%,TP,10.0x5.0x

KA7533,DIP,-,-,-,-,-

PI0.5,SN,T,52MM,TAPING_WI

D2LED3,FR-1,1,-,T1.6,301*252MM,

47Kohm,5%,1/8W,TP,2012

0OHM,5%,1/8W,DA,TP,3216

SNA

SNA

SNA

SNA

SNA

SA

SNA

SNA

SNA

SNA

SNA

SNA

SNA

SNA

SNA

1

2

1

3

3

6

1

13

5

1

1

1

1

2

3

1

1

1

1

3

1

2

1

6

1

2

1

1

1

1

1

1

Q’ty SA/SNA Remark

1 SA

1

1

1

1

SA

SNA

SNA

SNA

RY03

RY01

CN03

CN02

SNA

SNA

SNA

SNA

CN01

DSP1

LVT1

BZ01

SNA

SNA

SNA

SNA

SNA

IC02

C16

IC01

C13

SNA

SNA

SNA

SNA

SNA

SNA

SNA

SNA

R09

OJ03

R02

R12

C10

C01

C03

C11

C02

XTL1

IC03

OJ01

R15

R22

R07

R06

D15

D19

TR12

TR07

ZNR1

- 22 -

9. Schematic Diagrams

9-1 Schematic Diagrams

( This Document can not be used without Samsung’s authorization. )

��

��

��

��

��

��

��

PRIMARY S/W

BLK

YEL

125V

40W

YEL

YEL

�

BLK

YEL

��

��

��

BLK

BLU

FM

120V

21V

0V

ORG

BLU

DM

D/MOTOR

H. V. TRANSFORMER

COM

NO

NC

MONITOR

SWITCH

120V

H.V.DIODE

H. V. CAPACITOR

MAIN RELA

RED

MGT CVT

TCO

WHT

PCB

PATTERN

0V F

MAGNETRON

FA

CONDITION

DOOR IS OPENED

WHT

POWER RELAY (SECONDARY INTERLOCK)

DOOR

SENSING S/W

ORG ORG

GRN

ASSY PCB BOARD

BLK BLU

BLK

BLK

ORG

SECONDARY SWITCH

TOP

ORG

RED

BLU BLU

WHT

DOOR SENSING SWITCH

BOTTOM

WHT

MONITOR SWITCH

CENTER

BLK

RED WHT

POWER RELAY

MAGNETRON

HIGH VOLTAGE

DIODE

TO CHASSIS

FA F

RED

RED

HIGH VOLTAGE CAPACITOR

RED

RED

HIGH VOLTAGE

TRANSFORMER

SYMBOL COLOR

ORG

WHT

BLK

BLU

RED

ORANGE

WHITE

BLACK

BLUE

RED

- 23 -

10. Reference

10-1 Model name standard

Baoad

Classification

Distinguisher

USA CMO

USA RV

USA Junior

USA OTR

EUROPE Epoxy Cavity

EUROPE Ceramic Enamel

EUROPE

Quartz GRILL

M

R

SJ

SM

M

CE

G2

Middle

Classfication

CMO (Countertop MWO)

UTC (Under The

Cabinet)

Browner, Grill

Convection

Sensor

DC MWO

Hospital MWO

Ceramic Enamel

SOLO

CONVECTION

BUILT-IN

Distinguisher

Product

Code

W

U

G

D

H

C

S

E

M

C

B

MW

MU

SOLO

CONVECTION

SOLO

GRILL

SOLO

GRILL

H

V

1

2

1

2

MG

MC

MS

MD

MH

ME

RM

RC

RB

SJ

SMH

SMV

M1

M2

CE1

CE2

G2

Full Nane

USA CMO(EPOXY CAVITY)

USA UTC

USA GRILL

USA CONVECTION

USA CMO SENSOR

USA DC MWO

USA Hospital MWO

USA CMO(CERAMIC ENAMEL)

USA RV SOLO

USA RV CONVECTION

USA RV BUILT-IN

USA Junior MWO

USA OTR SOLO

USA OTR CONVECTION

EUROPE SOLO(EPOXY

CAVITY)

EUROPE GRILL(EPOXY CAVITY)

EUROPE SOLO(CERAMIC ENAMEL)

EUROPE GRILL(CERAMIC ENAMEL)

EUROPE Quartz GRILL

EUROPE

Power Grill

EUROPE Convection

EUROPE Fully

Built-In

PG

CK

C

F SOLO

GRILL

W

G

PG

CK

C

FW

FG

POWER GRILL

EUROPE CONVECTION

EUROPE CONVECTION

EUROPE SOLO FULLY BUILT-IN

EUROPE GRILL FULLY BUILT-IN

CONVECTION C FC EUROPE CONVECTION

FULLY BUILT-IN

- 24 -

10-2 Customer inquiry cases and countermeasures

Symptom

Air is evacuated from the oven.

The oven works automatically whenever the power is turned on.

Heating

Ground

Turn table occasionally rotates in reverse order.

The oven sometimes beeps.

Cause

• The vent of the oven is designed to be placed on the bottom of the product, and air is evacuated from the oven.

• It may happen due to power failure or abnormal voltage.

• It may happen when the door does not close completely.

• In many cases, it may

• It may happen when

•

• happen when the power level is incorrectly set.

the door does not close completely.

It may happen when the oven is out of order.

• Ground problem may happen when the oven is placed in a humid area and the over is not grounded.

• Ground is not provided by an extended electric outlet.

• Turntable has been designed to rotate in either direction since 1994.

The oven beeps every minute unless the food is in the oven after the food is cooked completely.

• The oven occasionally beeps during cooking.

Countermeasures

In the past, the vent was placed on the back panel of the oven. Since the oven was placed near the wall of a kitchen, the wall behind the oven was discolored. Thus, the vent of a new oven is placed on the bottom of the product, and air is evacuated from the oven.

• Connect the power plug three seconds after disconnecting the power plug.

• Close the door completely => Press the Cancel button

=> Press the Start button.

• Select HIGH by rotating the Cooking Power Control knob.

- KEEP WARM: This function is used to warm the cooked food for a certain time period, not to heat the food.

- MEDIUM/LOW: This function is used to cook the food slowly.

• Close the door completely. => Press the Cancel button. => Press the Start button.

• Contact the nearest Samsung after-sales service center.

• If the oven is placed in a humid area, buy an electric wire in a store selling electrical products. (Electric wires for home use are also allowed) Ground the oven through the electric wire.

• Buy an electric wire in a store selling electrical products. (Electric wires for home use are also allowed)

Ground the oven through the electric wire.

• In the past, the gear of the turntable was easily worn by turning it during cleaning. Now, the turntable of the oven is designed to rotate in both directions to prevent damage during cleaning. (Rotation direction is set when the oven initially operates.)

• Open and close the door again. (Beeping sounds indicate that the food is ready to be removed from the oven after cooking is complete.)

- 25 -

10-2 Customer inquiry cases and countermeasures (Continued)

Symptom

Strange popping sounds are produced while fish is cooked.

Strange smell is produced in the oven.

Error

Accessory

“

Cause

• Since fish is salty and maintains its moisture, it is cooked while making a series of soft popping sounds. (The liquid may come out of the fish when the fish is cooked.)

• It may happen when food particles stuck to oven walls or floor.

• Errors are classified into the case which is out of order and the case which is not out of order.

• Food with bones such as fish (e.g. mackerel) and pork

(e.g. pork chops) is cooked while making a series of soft popping sounds. Wrap the food completely so that food particles or spattered oils do not stick to the oven walls or floor.

Countermeasures

• Clean the inside of the oven. => Remove strange smell through the Deodorant button => If the strange smell still remains, place a piece of lemon on the turntable and operate the oven for 5 minutes by pressing the

Deodorant button.(However, the smells produced from the food exposed such as herbal remedies are not removed.)

• Clean the inside of the oven. => Remove strange smell through the Deodorant button => If the strange smell still remains, place a piece of lemon on the turntable and operate the oven for 5 minutes by pressing the

Deodorant button. (However, the smells produced from the food exposed such as herbal remedies are not removed.)

• Visit the nearest Samsung Service Center or local dealer to buy accessories. Before visiting, check the model name printed on the lower right side of the front panel of the oven.

Number does not appear on the display screen.

It happens when the power saving function is activated.

• Since the government recommends the reduction of electricity, the power saving function is performed for number display like that power cord is unplugged when the oven is not used. (Numbers are displayed when another button is pressed or when the door opens.)

- 26 -

This Service Manual is a property of Samsung Electronics Co.,Ltd.

Any unauthorized use of Manual can be punished under applicable

International and/or domestic law.

© Samsung Electronics Co., Ltd. June 2005

Printed in Korea

Code No. : DE68-03952A

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