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MICROWAVE OVEN
M945CE
SERVICE Manual
MICROWAVE OVEN
1. Precaution
CONTENTS
2. Specifications
3. Operating Instructions
4. Disassembly and Reassembly
5. Alignment and Adjustments
6. Troubleshooting
7. Exploded Views and Parts List
8. PCB Diagrams
9. Schematic Diagrams
SEAU
1. Precaution
Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use, repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as potentially lethal high voltages and currents.
1-1 Safety precautions ( )
1. All repairs should be done in accordance with the procedures described in this manual. This product complies with
Federal Performance Standard 21 CFR
Subchapter J (DHHS).
2. Microwave emission check should be performed to prior to servicing if the oven is operative.
3. If the oven operates with the door open :
Instruct the user not to operate the oven and contact the manufacturer and the center for devices and radiological health immediatly.
4. Notify the Central Service Center if the microwave leakage exceeds 5 mW/cm 2
5. Check all grounds.
6. Do not power the MWO from a "2-prong"
AC cord. Be sure that all of the built-in protective devices are replaced. Restore any missing protective shields.
7. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including: nonmetallic control knobs and compartment covers.
8. Make sure that there are no cabinet openings through which people--particularly children--might insert objects and contact dangerous voltages. Examples: Lamp hole, ventilation slots.
9. Inform the manufacturer of any oven found to have emmission in excess of 5 mW/cm 2 ,
Make repairs to bring the unit into compliance at no cost to owner and try to determine cause.
Instruct owner not to use oven until it has been brought into compliance.
CENTRAL SERVICE CENTER
10. Service technicians should remove their watches while repairing an MWO.
11. To avoid any possible radiation hazard, replace parts in accordance with the wiring diagram. Also, use only the exact replacements for the following parts:
Primary and secondary interlock switches, interlock monitor switch.
12. If the fuse is blown by the Interlock Monitor
Switch: Replace all of the following at the same time: Primary and secondary switches, as well as the Interlock Monitor Switch. The correct adjustment of these switches is described elsewhere in this manual. Make sure that the fuse has the correct rating for the particular model being repaired.
13. Design Alteration Warning:
Use exact replacement parts only, i.e., only those that are specified in the drawings and parts lists of this manual.
This is especially important for the
Interlock switches, described above.
Never alter or add to the mechanical or electrical design of the MWO. Any design changes or additions will void the manufacturer's warranty.10.Always unplug the unit's AC power cord from the AC power source before attempting to remove or reinstall any component or assembly.
14. Never defeat any of the B+ voltage interlocks. Do not apply AC power to the unit (or any of its assemblies) unless all solid-state heat sinks are correctly installed.
15. Some semiconductor ("solid state") devices are easily damaged by static electricity. Such components are called Electrostatically
Sensitive Devices (ESDs). Examples include integrated circuits and field-effect transistors.
Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground.
16. Always connect a test instrument's ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument's ground lead last.
Samsung Electronics 1-1
Pretaution
1-2 Special Servicing Precautions (Continued)
17. When checking the continuity of the witches or transformer, always make sure that the power is OFF, and one of the lead wires is disconnected.
18. Components that are critical for safety are indicated in the circuit diagram by shading, or .
19. Use replacement components that have the same ratings, especially for flame resistance and dielectric strength specifications. A replacement part that does not have the same safety characteristics as the original might create shock, fire or other hazards.
1-3 Special High Voltage Precautions
1. High Voltage Warning
Do not attempt to measureany of the high voltages--this includes the filament voltage of the magnetron. High voltage is present during any cook cycle.
Before touching any components or wiring, always unplug the oven and discharge the high voltage capacitor (See Figure 1-1)
2. The high-voltage capacitor remains charged about 30 seconds after disconnection. Short the negative terminal of the high-voltage capacitor to to the oven chassis. (Use a screwdriver.)
3. High voltage is maintained within specified limits by close-tolerance, safety-related components and adjustments. If the high voltage exceeds the specified limits, check each of the special components.
Fig. 1-1. Discharging the High Voltage Capacitor
1-2 Samsung Electronics
2. Specifications
2-1 Table of Specifications
TIMER
POWER SOURCE
99 MINUTES 90 SECONDS
240V 50Hz, AC
POWER CONSUMPTION MICROWAVE : 1,550W
OUTPUT POWER FROM 100 TO 1000W (10 LEVEL POWER)
(IEC-705 TEST PROCEDURE)
OPERATING FREQUENCY 2,450MHz
MAGNETRON
COOLING METHOD
OUTSIDE DIMENSIONS
OM75PH(31)
COOLING FAN MOTOR
517(W) x 297(H) x 385(D)
POWER LEVEL
% M945CE
10% 100W
20% 200W
30% 300W
40%
50%
400W
500W
60%
70%
80%
600W
700W
800W
90% 900W
100% 1000W
ON TIME OFF TIME
4 sec
7 sec
10 sec
13 sec
16 sec
19 sec
22 sec
25 sec
28 sec
30 sec
26 sec
23 sec
20 sec
17 sec
14 sec
11 sec
8 sec
5 sec
2 sec
0 sec
2-2 Comparison Chart
FEATURE
MORE/LESS
AUTO COOK/DISH
AUTO DEFROST
TIME COOK
POWER LEVEL
INSTANT COOK
MEMORY
BOOST
CHILD LOCK
CLOCK
GRILL
COMBI
MODEL
M945CE
O
O
O
O
-
-
O
O
O
O
O
O
Samsung Electronics 2-1
3. Operating Instructions
3-1 Control Panel
Instant Cook Button
Plated meals
Drinks Soup~
Sauce
Casserole~
Stew Pasta & sauce
Chicken
& rice
Auto Cook Button
Weight Entering Button
Power Level Selection Button
Cooking Timer/
StandingTime Button
Auto Defrost Auto Cook kg~lbs.
g~oz.
More~
Less
Clock
Hold~
Timer
Power levels
Memory
10 min~ hours
1 min~ min portion~
10 s
Auto Defrost Button
More/Less Button
Clock Setting Button
Memory Button
Timer Setting Button
Stop/Clear Button
3-2 Features & External Views
Door Ventilation Holes
Stop~Cancel Start~1min+
M945CE
Standard Boost Button
Heater Light
Safety Interlock Holes
Door Latches
Control Panel
Open Door Push Button
Glass Plate Guide Roller
Samsung Electronics
517mm
385mm
3-1
4. Disassembly and Reassembly
4-1 Replacement of Magnetron, Motor Assembly and Lamp
Remove the magnetron including the shield case, permanent magnet, choke coils and capacitors (all of which are contained in one assembly).
1. Disconnect all lead wires from the magnetron and lamp.
2. Remove a screw securing the magnetron supporter.
3. Remove the thrmo S/W.
4. Remove the air cover.
5. Remove screws securing the magnetron to the wave guide.
6. Take out the magnetron very carefully.
7. Remove screws from the back panel.
8. Take out the fan motor.
9. Remove the oven lamp by rotating to pull out from hole of air cover.
NOTE1: When removing the magnetron, make sure that its antenna does not hit any adjacent parts, or it may be damaged.
NOTE2: When replacing the magnetron, be sure to remount the magnetron gasket in the correct position and make sure the gasket is in good condition.
Lamp
Cover Air Thermo S/W
Fan Motor
Magnetron
H. V. Trans
H. V. Capacitor
Screw
4-1 Replacement of High Voltage Transformer
1. Discharge the high voltage capacitor.
2. Disconnect all the leads.
3. Remove the mounting bolts.
4. Reconnect the leads correctly and firmly.
PRECAUTION
Servicemen should remov their watches whenever working close to or replacing the magnetron.
PRECAUTION
There exists HIGH VOLTAGE ELECTRICITY with high current capabilities in the circuits of the HIGH
VOLTAGE TRANSFORMER secondary and filament terminals. It is extremely dangerous to work on or near these circuits with the oven energized.
DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron.
Screws
H. V. Trans
Samsung Electronics 4-1
Disassembly and Reassembly
4-3 Replacement of Door Assembly
4-3-1 Removal of Door Assembly
Remove hex bolts securing the upper hinge and lower hinge. Then remove the door assembly.
Screws
Upper Hinge
4-3-2 Removal of Door "C"
Insert flat screwdriver into the gap between Door
"E" and Door "C" to remove Door "C". Be careful when handling Door "C" because it is fragile.
Lower Hinge
Screws
4-3-3 Removal of Door "E"
Following the procedure as shown in the figure, insert and bend a thin metal plate between Door
"E" and Door "A" until you hear the 'tick' sound.
1. Insertion depth of the thin metal plate should be
0.5mm or less.
4-3-4 Removal of Key Door & Spring
Remove pin hinge from Door "E"
Detach spring from Door "E" and key door.
4-2
Door "E"
Key Door Spring
Samsung Electronics
Disassembly and Reassembly
4-3-5 Reassembly Test
After replacement of the defective component parts of the door, reassemble it and follow the instructions below for proper installation and adjustment so as to prevent an excessive microwave leakage.
1. When mounting the door to the oven, be sure to adjust the door parallel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment.
2. Adjust so that the door has no play between the inner door surface and oven front surface. If the door assembly is not mounted properly, microwave energy may leak from the space between the door and oven.
3. Do the microwave leakage test.
4-4 Replacement of Fuse
1. Disconnect the oven from the power source.
2. Remove the 10A fuse in the fuse holder.
3. When replacing the 10A fuse, be sure to use an exact replacement part. If new 10A fuse blows out again after replacement, check the primary interlock switch, door sensing switch and interlock monitor switch.
4. When the above three switches operate properly, check if any other part such as the control circuit board, blower motor or high voltage transformer is defective.
4-5 Replacement of Drive Motor
1. Take out the glass tray, guide roller and coupler from cavity.
2. Turn the oven upside down to replace the drive motor.
3. Remove a screw securing the drive motor cover.
4. Disconnect all the lead wires from the drive motor.
5. Remove screws securing the drive motor to the cavity.
6. Remove the drive motor.
7. When replacing the drive motor, be sure to remount it in the correct position.
8. Connect all the leads to the drive motor.
9. Screw the deive motor cover to the base plate with a screw driver.
10. Remount the coupler in the correct position.
Samsung Electronics
Screw
Drive Motor
Drive Motor Cover
Base Plate
4-3
Disassembly and Reassembly
4-6 Replacement of Control Circuit Board
4-6-1 Removal of Ass'y Control Box
1. Be sure to ground any static electric charge in your body and never touch the touch control circuitry.
2. Disconnect the connectors from the control circuit board.
3. Remove screws securing the control box assembly.
4. Remove the screw securing the ground tail of the keyboard.
4-6-2 Remonal of Ass'y P.C.B
1. Pull the lever end of the plastic fastener and remove the Flexible Printed Circuit(FPC) of membrane panel.
2. Remove screws securing the control circuit board.
3. Lift up the control circuit board from the Ass'y control box.
4. When reconnecting the FPC connector, make sure that the holes on the connector are properly engaged with the hooks on the Plastic Fastener.
Control Box
FPC Connector
4-6-3 Removal of Window Display & Membrane Panel
1. Window display should not be disassembled as its mounting tabs will be broken. If repair work is difficult, replace with Ass'y control panel.
2. The membrane key board is attached to the escutcheon base with doublefaced adhesive tape. Therefore, applying hot air such as using of hair dryer is recommended for smoother removal.
3. When installing new membrane key board, make sure that the surface of escutcheon base is cleaned sufficiently so that any problems
(shorted contacts or uneven surface) can be avoided.
Window
Display
Membrane
Panel
4-4
Screw
Screw
Samsung Electronics
5. Alignment and Adjustments
PRECAUTION
1. High voltage is present at the high voltage terminals during any cook cycle.
2. It is neither necessary nor advisable to attempt measurement of the high voltage.
3. Before touching any oven components or wiring, always unplug the oven from its power source and discharge the high voltage capacitor.
5-1 High Voltage Transformer
1. Remove connectors from the transformer terminals and check continuity.
2. Normal resistance readings are as follows:
Secondary
Filament
Primary
(Room temperature = 20ûC)
Approx. 130 W
Approx.0
W
Approx.1.700
W
Filament Terminals
Primary
Terminals
Secondary
Terminal
5-2 Low Voltage Transformer
1. The low voltage transformer is located on the control circuit board.
2. Remove the low voltage transformer from the
PCB Ass'y and check continuity.
3. Normal resistor reading is shown in the table.
Terminals
1~2(Input)
3~4(Output 2.9V)
5~6(Output13V)
Resistance
1,000 W
3.947
W
2.117
W
5-3 Magnetron
1. Continuity checks can indicate only an open filament or a shorted magnetron. To diagnose an open filament or shorted magnetron :
2. Isolate the magnetron from the circuit by disconnecting its leads.
3. A continuity check across the magnetron filament terminals should indicate one ohm or less.
4. A continuity check between each filament terminal and magnetron case should read open.
Magnetron Antenna
Gasket Plate
Cooling Fins
Samsung Electronics 5-1
Alignment and Adjustments
5-4 High Voltage Capacitor
1. Check continuity of the capacitor with the meter set at the highest resistance scale.
2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 9M
W.
3. A shorted capacitor will show continuous continuity.
4. An open capacitor will show constant 9M W.
5. Resistance between each terminal and chassis should read infinite.
5-5 High Voltage Diode
1. Isolate the diode from the circuit by disconnecting its leads.
2. With the ohm-meter set at the highest resistance scale, measure across the diode terminals. Reverse the meter leads and read the resistance. A meter with 6V, 9V or higher voltage batteries should be used to check the front-to back resistance of the diode (otherwise an infinite resistance may be read in both directions). The resistance of a normal diode will be infinite in one direction and several hundred K
W in the other direction.
5-6 Main Relay and Power Control Relay
1. The relays are located on the PCB Ass'y. Isolate them from the main circuit by disconnecting the leads.
2. Operate the microwave oven with a water load in the oven. Set the power level set to high.
3. Check continuity between terminals of the relays after the start pad is pressed.
5-7 Adjustment of Primary Switch, Door Sensing Switch and Monitor Switch
Precaution
For continued protection against radiation hazard, replace parts in accordance with the wiring diagram and be sure to use the correct part number for the following switches: Primary and secondary interlock switches, and the interlock monitor switch
(replace all together). Then follow the adjustment procedures below. After repair and adjustment, be sure to check the continuity of all interlock switches and the interlock monitor switch.
1. When mounting Primary switch and Interlock
Monitor switch to Latch Body, consult the figure.
2. No specific adjustment during installation of
Primary switch and Monitor switch to the latch body is necessary.
3. When mounting the Latch Body to the oven assembly, adjust the Latch Body by moving it so that the oven door will not have any play in it.
Check for play in the door by pulling the door assembly. Make sure that the latch keys move smoothly after adjustment is completed.
Completely tighten the screws holding the Latch
Body to the oven assembly.
4. Reconnect to Monitor switch and check the continuity of the monitor circuit and all latch switches again by following the components test procedures.
5. Confirm that the gap between the switch housing and the switch actuator is no more than
0.5mm when door is closed.
5-2
Body Latch
Primary switch
Monitor switch (COM-NC)
Monitor switch (COM-NO)
Door Sensing S/W
Primary Interlock Switch
Interlock
Monitor
Switch
Door Open
¥
0
Lever Door(B)
Door Sensing
Switch
Door Closed
0
¥
0
0
Samsung Electronics
Alignment and Adjustments
5-8 Output Power of Magnetron
CAUTION
MICROWAVE RADIATION
PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS
CONDUCTING MICROWAVE ENERGY.
The output power of the magnetron can be measured by performing a water temperature rise test.
Equipment needed :
* Two 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm)
* One glass thermometer with mercury column
NOTE: Check line voltage under load. Low voltage will lower the magnetron output. Make all temperature and time tests with accurate equipment.
1. Fill the one liter glass vessel with water.
2. Stir water in glass vessel with thermometer, and record glass vessel's temperature ("T1", 10±1ûC).
3. After moving the water into another glass vessel, place it in the center of the cooking tray. Set the oven to high power and operate for 54 seconds exactly. (2 seconds included as a holding time of magnetron oscillation:)
4. When heating is finished, stir the water again with the thermometer and measure the temperature ("T2").
5. Subtract T1 from T2. This will give you the water temperature rise. ( DT)
6. The output power is obtained by the following formula;
Output Power =
4.187 x 1000 x
DT
42
* Output (W) = 100 x DT
42 : Heating Time (sec)
4.187 : Coefficient for Water
1000 : Water (cc)
DT : Temperature Rise (T2-T1)
7. Normal temperature rise for this model is 9ûC to 11ûC at 'HIGH'.
NOTE 1: Variations or errors in the test procedure will cause a variance in the temperature rise.
Additional power test should be made if temperature rise is marginal.
NOTE 2: Output power in watts is computed by multiplying the temperature rise (step E) by a factor of 91 times the of centigrade temperature.
Samsung Electronics 5-3
Alignment and Adjustments
5-9 Procedure for Measurement of Microwave Energy Leakage
1) Pour 275±15cc of 20±5ûC(68±9ûF) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven.
2) Start to operate the oven and measure the leakage by using a microwave energy survey meter.
3) Set survey meter with dual ranges to 2,450MHz.
4) When measuring the leakage, always use the 2 inch spacer cone with the probe. Hold the probe perpendicular to the cabinet door. Place the spacer cone of the probe on the door and/or cabinet door seam and move along the seam, the door viewing window and the exhaust openings moving the probe in a clockwise direction at a rate of 1 inch/sec. If the leakage testing of the cabinet door seam is taken near a corner of the door, keep the probe perpendicular to the areas making sure that the probe end at the base of the cone does not get closer than 2 inches to any metal. If it gets closer than 2 inches, erroneous readings may result.
5) Measured leakage must be less than 4mW/cm 2 , after repair or adjustment.
Maximum allowable leakage is 5mW/cm
2
.
4mW/cm
2
is used to allow for measurement and meter accuracy
5-10 Check for Microwave Leakage
1. Remove the outer panel.
2. Pour 275±15cc of 20±5ûC(68±9ûF) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven.
3. Start the oven at the highest power level.
4. Set survey meter dual ranges to 2,450MHz.
5. Using the survey meter and spacer cone as described above, measure arnear the opening of magnetron, the surface of the air guide and the surface of the wave guide as shown in the following photo.( but avoid the high voltage components.) The neading should be less than 4mW/cm 2 .
5-11 Note on Measurement
1) Do not exceed the limited scale.
2) The test probe must be held on the grip of the handle, otherwise a false reading may result when the operator's hand is between the handle and the probe.
3) When high leakage is suspected, do not move the probe horizontally along the oven surface; this may cause damage to the probe.
4) Follow the recommendation of the manufacturer of the microwave energy survey meter.
5-12 Leakage Measuring Procedure
5-13-1 Record keeping and notification after measurement
1) After adjustment and repair of a radiarion preventing device, make a repair record for the measured values, and keep the data.
2) If the radiation leakage is more than 4 mW/cm 2 after determining that all parts are in good condition, functioning properly and the identical parts are replaced as listed in this manual notift that fact to ;
CENTRAL SERVICE CENTER
5-13-2 At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer.
Samsung Electronics
6. Troubleshooting
PRECAUTION
1. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE.
2. BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT.
3. DISCHARGE THE HIGH VOLTAGE CAPACITOR.
4. WHEN CHECKING THE CONTINUITY OF THE SWITCHES OR TRANSFORMER, DISCONNECT ONE LEAD WIRE FROM THESE
PARTS AND THEN CHECK CONTINUITY WITHOUT THE POWER SOURCE ON. TO DO OTHERWISE MAY RESULT IN A FALSE
READING OR DAMAGE TO YOUR METER.
5. DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE STATIC DISCHARGE MAY DAMAGE IT.
ALWAYS TOUCH GROUND WHILE WORKING ON IT TO DISCHARGE ANY STATIC CHARGE BUILT UP.
6-1 Electrical Maltunction
SYMPTOM CAUSE CORRECTIONS
Oven is dead.
1. Open or loose lead wire harness
Fuse is OK.
2. Open thermal cutout (Magnetron)
No display and no operation at all. 3. Open low voltage transformer
4. Defective Ass'y PCB
Check fan motor when thermal cutout is defective.
Check Ass'y PCB when LVT is defective.
No display and no operation at all. 1. Shorted lead wire harness
Fuse is blown.
2. Defective primary latch switch (NOTE 1)
3. Defective monitor switch (NOTE1)
Check adjustment of primary, interlock monitor, door sensing switch.
4. Shorted HVCapacitor
5. Shorted HVTransformer (NOTE2)
Oven does not accept key input (Program)
Timer starts countdown but no microwave oscillation.
(No heat while oven lamp and fan motor turn on.)
NOTE 1: All of these switches must be replaced at the same time.
(refer to adjustment instructions)
Check continuity of power relay contacts and if it has continuity, replace power relay also.
NOTE 2: When HVTransformer is replaced, check diode and magnetron also.
Refer to operation procedure.
1. Key input is not in-Sequence
2. Open or loose connection of membrane key pad to Ass'y PCB
3. Shorted or open membrane panel
4. Defective Ass'y PCB Replace PCB main.
1. Off-alignment of latch switches
2. Open or loose connection of high voltage circuit especially magnetron filament circuit
NOTE: Large contact resistance will bring lower magnetron filament voltage and cause magnetron to lower output and/or intermittent oscillation.
3. Defective high voltage components
H.V.Transformer
H.V.Capacitor
H.V.Diode, H.V.Fuse
Magnetron
4. Open or loose wiring of power relay
5. Defective primary latch switch
6. Defective power relay or Ass'y PCB
Adjust door and latch switches.
Check high voltage component according to component test procedure and replace if it is defective.
Replace PCB main.
Samsung Electronics 6-1
Troubleshooting
6-1 Electrical Maltunction(continved)
SYMPTOM
Oven lamp and fan motor turn on
Oven can program but timer does not start.
Microwave output is low;.
Oven takes longer time to cook food.
CAUSE
1. Misadjustment or loose wiring of primary latch switch
2. Defective primary latch switch
1. Open or loose wiring of secondary interlock switch
2. Off-alignment of primary interlock
3. Defective secondary interlock S/W
1. Decrease in power source voltage.
2. Open or loose wiring of magnetron filament circuit. (Intermittent oscillation))
3. Aging of magnetron
Loose wiring of door sensing switch
Defective Ass'y PCB
Fan motor turns on when plugged in
Oven does not operate and return to the plugged in mode.
Loud buzzing noise can be heard.
Turntable motor does not rotate.
Oven stops operation during cooking
Sparks
Uneven cooking
1. Loose fan and fan motor
2. Loose screws on H.V.Transformer
3. Shorted H.V.Diode
1. Open or loose wiring of turntable motor.
2. Defective turntable motor.
1. Open or loose wiring of primary interlock switch
2. Operation of thermal cutout(Magnetron)
1. Metallic ware or cooking dishes touching on the oven wall.
2. Ceramic ware trimmed with gold or silver powder also causes sparks.
Uneven intensity of microwave due to its characteristics.
Noise from the turntable motor when it starts to operate.
Noise may result from the motor.
CORRECTIONS
Adjust door and latch switches.
Adjust door and interlock switches.
Consult electrician.
Check wire of door sensing switch.
Replace PCB main.
Tighten screws of fan motor.
Tighten screws of H.V.Transformer.
Replace H.V.Diode.
Replace turntable motor.
Adjust door and latch switches.
Inform the customer.
Do not use any type of cookware with metallic trimming.
Wrap thinner parts of the food with aluminum foil.
Use plastic wrap or cover with a lid.
Stir once or twice while cooking foods such as soup, cocoa, or milk.
Replace turntable motor.
6-2 Samsung Electronics
7. Exploded Views and Parts List
7-1 Exploded Views
D2
D1
D3
D9
D8
M26
C3
C4
C5
C6
C7
C1
C2
D6
D7
D5
D4
D9
M1
M25
M2
M32
M3
M4
M34 M33
M5
M7 M11
M6
M31
M24 M14
M23
M21
M15
M13
B1
M17
B3
B2
M9
M10
M30
M8
B4
M12
M16
M18
M19
M22
M27
M20
M29
M28
Samsung Electronics 7-1
Exploded Views and Parts List
7-2 Main Parts List
Ref. No.
M29
M30
M31
M32
M25
M26
M27
M28
M33
M34
M21
M22
M23
M24
M17
M18
M19
M20
M13
M14
M15
M16
M 9
M10
M11
M12
M 5
M 6
M 7
M 8
M 1
M 2
M 3
M 4
Parts No.
Description/Specification
DE70-30001H PANEL-OUTER;C/STEEL,T0.6,W360,L1128,P/WHT
DE63-90035G CUSHION-RUBBER;DFA20,T2,W190,L100,BLK
DE39-20042B ASSY POWER CORD;KKP-550A/B207,1.0/3C,250V10A,L
DE39-40537A WIRE HARNESS-A;230V50HZ,M945(SAW)
DE91-40093A ASSY NOISE FILTER;SN-E10D,250V,10A
DE31-10156A MOTOR-FAN;SMF-945EA,230/50,2400,M97G45
DE47-20009A THERMOSTAT;PW2N-520PB,160/60,250V/7.5A,H,
DE03-30035A MAGNETRON;OM75PH((31)ESS
DE93-20001C ASSY BODY LATCH;M745(EUW),2ND-W/0.7,NYLON66
4713-001004 LAMP-INCANDESCENT;230V,-,40W,ORG,-,-,25x71mm
DE61-50490A BRACKET-TCO;SECC1,T0.6,34,58
DE71-60016A COVER-AIR;PP,2,WHT,M945/M245
DE73-90027A FERRITE-CORE;NI-ZN,T13.8,W21.0,L28.0,BNF-14
DE66-90013B LEVER-DOOR;NYLON66,(2021SW),NTR,M745(EUW)
DE26-10100C TRANS-H.V;SHV-945EG1-3,240V,2380V/3.20V
DE61-50106A BRACKET-HVC;SECC,T0.8,W31,L125.8
2501-001014 C-OIL;1.05uF,2100V,BK,35X54X85,20mm
DE59-40001A DIODE-H.V;HVR-1X-32B-12
DE91-70061A ASSY-H.V.FUSE;THV060T-0800-H,5KV/0.8A,WHT
DE61-40017A FOOT;PP(A353),BLK,MW5630T
DE31-10154A MOTOR-DRIVE;M2HJ49ZR02,ST-16,50/60HZ
DE80-10001A BASE-PLATE;SGCC,T0.8,345,565
DE47-20173A THERMOSTAT;PW-2N(90/60)30,187Y,250V7.5A,9
DE71-60382A COVER-CEILING;MICASHEET,T0.5,70,133
DE92-40196M ASSY DOOR;M945CE/XSA,P/WHT,SEAU
DE94-00070B ASSY CONTROL-BOX;240V50HZ,M945CE/XSA,P-WHT
DE74-20015B TRAY-COOKING;GLASS,T6.0,PI318,1050G,MW5630T
DE92-90189A ASSY-GUIDE ROLLER;MW5630T,D17.5
DE67-60002A COUPLER;PPS,5GR,BRN,M97G45
DE63-90065N CUSHION-GUIDE;PUT-FOAM,T10,W10,L200,BLK,MW55
DE63-90065O CUSHION-GUIDE;PUT-FOAM,T35,W20,L135,BLK,MW55
DE63-90065O CUSHION-GUIDE;PUT-FOAM,T35,W20,L135,BLK,MW55
3601-000448
3601-001126
FUSE-FERRULE;250V,10A,SLOW-BLOW,CERAMIC,6.3
FUSE-FERRULE;250V,1.6A,QUICK-ACTING,CERAMIC
: Option Parts : Warning
Remarks
PN/OUT
CV/AIR
CV-TCO
CV/AIR
BASE
CAVITY
:Electrostatically Sensitive Devices
Q'ty
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
7-2 Samsung Electronics
Exploded Views and Parts List
7-3 Door Parts List
Ref. No
D 5
D 6
D 7
D 8
D 1
D 2
D 3
D 4
D 9
D10
Parts No.
Description / Specification
DE67-20003W SCREEN-DOOR(B);ACRYL ,T1.5,W107.4,L401.5,WHT,M945CE/XSA,-
DE02-00125A TAPE-DOUBLE FACE;ACRYL,T0.45,W9,WHT,WF103,#4420
DE64-40011A DOOR-A;RESIN-ABS(HR-0370U),T2.5,M945(
DE92-50127H ASSY DOOR-E;COATING,BLACK,T0.8,-,-,-,-
DE64-40012A DOOR-C;RESIN-PP(TB53),T2.0,CE945GF,BL
DE64-40006D DOOR-KEY;NYLON#66,(2021SW),BLK,M945(EUW
DE61-70032A SPRING-KEY;ES,HSWR,PI0.6,D5.4,L25,MW8640T
DE61-80002A HINGE-UPPER;SCP1,T2.3,26,77,ZPC3,WHT,CE945
DE61-80003A HINGE-LOWER;SCP1,T2.3,26,77,ZPC3,WHT,CE945
DE01-00002B FILM-DOOR;PC,T0.15,275,175,MW5574W
Q'ty
1
1
1
1
1
0.58
1
1
1
1
Remarks
DOOR/A
7-4 Control Parts List
Ref. No.
C 5
C 6
C 7
C 1
C 2
C 3
C 4
Parts No.
Description/Specification
DE66-20006E BUTTON-PUSH;ABS(VH-0855),P/WHT,M745(EUW)
DE61-70076A SPRING-BUTTON;HSWR,PI0.6
DE34-00003B SWITCH-MEMBRANE;PET,M945CE/XSA,-,-,-,-,-,SEAU
DE67-40002A WINDOW-DISPLAY;RESIN-ACRYLIC,T2.3,M945(IDEO),
DE72-70007B CONTROL-PANEL;RESIN-ABS,120GR,WHT(VH-0800),M
DE91-10401A ASSY PCB-MAIN;230V50HZ,NS,VFD,M945(EURO)NEW,
DE93-30539F ASSY CONTROL-PANEL;M945(EUW)
Q'ty
1
1
1
1
1
1
1
Remarks
7-5 Body Latch Parts List
Ref. No
B 1
B 2
B 3
B 4
Parts No.
DE66-40001A
3405-000178
3405-000175
DE66-90001A
Description / Specification
LATCH-BODY;POM(F20-02),40GR,NTR
SWITCH-MICRO;250V,15A,200gf,SPST-NO
SWITCH-MICRO;250V,15A,200gf,SPST-NO
LEVER-SWITCH;P.O.M(F20-02),2,6,NTR,2ND-W-P/
Samsung Electronics
Q'ty Remarks
1
1
1
2
7-3
Exploded Views and Parts List
7-6 Standard Parts List
Parts No.
DE60-10012A
DE60-10012A
DE60-10012A
DE60-10033A
DE60-10033A
DE60-10045A
DE60-10080A
DE60-10080A
DE60-10082H
DE60-10082H
DE60-10082H
DE60-10082H
DE60-10082H
DE60-10082H
DE60-10088A
DE60-10098A
DE60-10098A
DE60-10045A
DE60-10098A
DE60-10012A
Description / Specification
SCREW-TAP TITE;TH,+,3,M4,L10,SWR10,ZPC2,TOOTH
SCREW-TAP TITE;TH,+,3,M4,L10,SWR10,ZPC2,TOOTH
SCREW-TAP TITE;TH,+,3,M4,L10,SWR10,ZPC2,TOOTH
SCREW-TH;TH,+,M4,L10,MSWR10,FEFZY
SCREW-TH;TH,+,M4,L10,MSWR10,FEFZY
SCREW-TAP PH;PH,M3,L6,FEFZY
SCREW-WASHER;M5,L12,2S
SCREW-WASHER;M5,L12,2S
SCREW-A;2S-4X12,TOOTHED
SCREW-A;2S-4X12,TOOTHED
SCREW-A;2S-4X12,TOOTHED
SCREW-A;2S-4X12,TOOTHED
SCREW-A;2S-4X12,TOOTHED
SCREW-A;2S-4X12,TOOTHED
SCREW-TAP PH;PH,M3,L8,FEFZY,PLAIN
SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W
SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W
SCREW-TAP PH;PH,M3,L6,FEFZY
SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W
SCREW-TAP TITE;TH,+,3,M4,L10,SWR10,ZPC2,TOOTH
Remarks
B-PLTE
BD-LAT
CN-BOX
CV/AIR
MO/FAN
PN/OUT
PCB
CV-TCO
N-F-EA
P-C-EA
S-M-EA
HI-LOW
HI-UPP
MG-TCO
MGT
TNS-HV
-
-
M/GEAR
-
Q'ty
2
1
2
5
2
1
2
2
1
1
2
1
4
4
2
1
1
2
1
1
7-4 Samsung Electronics
8. P.C.B Diagrams
8-1 P.C.B Diagrams
Samsung Electronics 8-1
P.C.B Diagrams
8-2 P.C.B Parts List
No.
Parts No.
Description / Specification Q'ty Remarks
P 1 0401-001002 DIODE-SWITCHING;1N4148M,100V,200mA,DO-34,TP
P 1 0401-001002 DIODE-SWITCHING;1N4148M,100V,200mA,DO-34,TP
P 2 0402-000559 DIODE-RECTIFIER;D4G,400V,1A,T-1
P 3 0403-000525 DIODE-ZENER;1N4733A,5.1V,5%,1W,DO-41,TP
P 4 0501-000283 TR-SMALL SIGNAL;KSA539,PNP,400mW,TO-92,TP,120-
P 5 0501-000388 TR-SMALL SIGNAL;KSC815,NPN,400mW,TO-92,BK,120-
P 6 0504-001014 TR-DIGITAL;KSR1005,NPN,300mW,4.7K-10K,TO-
P 7 0504-001015 TR-DIGITAL;KSR2005,PNP,300mW,4.7K-10K,TO-
P 8 2001-000037 R-CARBON(S);330OHM,5%,1/2W,AA,TP
P 9 2001-000273 R-CARBON;100KOHM,5%,1/8W,AA,TP
P10 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP
P11 2001-000429 R-CARBON;1KOHM,5%,1/8W,AA,TP
P12 2001-000435 R-CARBON;1MOHM,5%,1/8W,AA,TP
P13 2001-000613 R-CARBON;3.9KOHM,5%,1/8W,AA,TP
P14 2001-000780 R-CARBON;470OHM,5%,1/8W,AA,TP
P15 2011-000157 R-NETWORK;10K,5%,1/8W,A,SIP,6P,BK
8 D04,D05,D06,D07,D08,D09,D10,D11
8 D12,D13,D14,D15,D16,D17,D18,D19
3 D01,D02,D03
3 ZD01,ZD02,ZD03
1 TR01
1 TR03
6 TR02,TR04,TR05,TR06,TR07,TR08
1 TR09
2 R01,R02
1 R16
6 R12,R13,R14,R19,R20,R21
8 R05,R06,R08,R09,R10,R18,R22,R23
1 R07
7 R11,R15,R17,R24,R25,R26,R27
2 R03,R04
1 AR01
P16 2202-000173 C-CERAMIC,MLC-AXIAL;1nF,10%,50V,Y5P,TP,1.9x3.5
P17 2202-000205 C-CERAMIC,MLC-AXIAL;22pF,5%,50V,SL,TP,1.9x3.5
4 C11,C12,C13,C14
2 C07,C08
P18 2202-000780 C-CERAMIC,MLC-AXIAL;100nF,+80-20%,50V,Y5V,TP,3.5x1
5 C05,C06,C09,C10,C19
P19 2401-000244 C-AL;100uF,20%,10V,GP,TP,6.3x7,5 1 C03
P20 2401-000914 C-AL;22uF,20%,16V,GP,TP,5x11,5
P21 2401-001415 C-AL;470uF,20%,35V,GP,TP,10x20,5
1 C04
1 C01
P22 2401-001573 C-AL;47uF,20%,50V,GP,TP,6.3x11,2.5
1 C02
P23 2802-000143 RESONATOR-CERAMIC;4.19MHz,0.5%,TP,10.0x5.0x7.5mm
1 XTL1
P24 3711-000203 CONNECTOR-HEADER;1WALL,3P,1R,3.96mm,ANGLE,SN 1 CN01
P25 3711-000240 CONNECTOR-HEADER;1WALL,4P,1R,3.96mm,STRAIGHT,SN 1 CN02
P26 3711-000881 CONNECTOR-HEADER;BOX,3P,1R,2.5mm,STRAIGHT,SN
P27 DE13-20009A IC;KA7533,DIP
1
1
CN03
IC02
P28 DE39-60001A WIRE-SO COPPER;PI0.6,SN,T,52MM,TAPING_WIRE
P28 DE39-60001A WIRE-SO COPPER;PI0.6,SN,T,52MM,TAPING_WIRE
P28 DE39-60001A WIRE-SO COPPER;PI0.6,SN,T,52MM,TAPING_WIRE
P29 3501-001016 RELAY-MINIATURE;24V,12.5mA,5A,1FormA,8mS,4mS
8
8
3
1
J01,J02,J03,J04,J05,J06,J07,J08
J09,J10,J11,J12,J13,J14,J15,J16
J17,J18,J19
RY02
P29 3501-001016 RELAY-MINIATURE;24V,12.5mA,5A,1FormA,8mS,4mS
P30 3501-001062 RELAY-POWER;24VDC,523.2mW,16A,1FormA,15mS
P31 3708-000528 CONNECTOR-FPC/FC/PIC;13P,2.54mm,STRAIGHT,SN
P32 DE07-10081A V.F.DISPLAY;SVM-4SM03,GRN/RSHORG,4,51,81.7
P33 DE09-30530A IC-MCU;HD404316-C31S,DIP,M945/M245(EU
P34 DE26-20141A TRANS-L.V;SLV-945E,230V,50HZ,AC17/2.9V
P35 DE30-20016A BUZZER;CBE2220BA,STICK
P36 DE61-90004A HOLDER-DIGITRON;NYLON#66,1.5,85,36,8GR,BLK
1 RY03
1 RY01
1 CN04
1 VFD1
1 IC01
1 LVT1
1 BUZ1
1 -
8-2 Samsung Electronics
9. Schematic Diagrams
9-1 Schematic Diagrams
230V~
50Hz
VOLTAGE
FREG
E
NOTE
1. INPUT : 230V
2. DOOR : OPEN
3. LAMP : ON
4. : P.C.B PATTERN
5. : P.C.B IN/OUT
POINT
ASSY NOISE FILTER
1mH
L.V.T
BRN
MGT
TCO
BRN
CAVITY
TCO
BRN
BLK
PRIMARY
SWITCH
BLU
MAIN
RELAY
YEL
L 230V
YEL
FM
0V
21V
ORG
BLU
ORG
BLU
DM
E
YEL
BRN
INRUSH RELAY
RESISTOR
MONITOR
SWITCH
BLK
WHT
YEL
BLU BLU
POWER RELAY
H.V.T
0V
H.V.FUSE
H.V.D
H.V.C
F FA
MAGNETRON
MAIN
RELAY
INRUSH
RELAY
POWER
RELAY
DOOR
SENSING
SWITCH
ORG
ASSY MAIN P.C.B
PRIMARY
LATCH
SWITCH
DOOR
SENSING
SWITCH
MONITOR
SWITCH
SYMBOL COLOR
BRN
BLU
ORG
RED
WHT
BLK
YEL
GRN
Y/G
BROWN
BLUE
ORANGE
RED
WHITE
BLACK
YELLOW
GREEN
YELLOW/GREEN
Samsung Electronics 9-1
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