Samsung G-643C User manual

SERVICE MANUAL
SAMASUNG G-643C
MODEL

2. Specifications
2-1 Table of Specifications
Samsung Electronics 2-1
TIMER 99 MINUTES 90 SECONDS
POWER SOURCE 230V 50Hz, AC
POWER CONSUMPTION MICROWAVE : 1,350W
GRILL : 1,000W
OUTPUT POWER FROM 80 TO 800W (10 LEVEL POWER)
(IEC-705 TEST PROCEDURE)
OPERATING FREQUENCY 2,450MHz
MAGNETRON OM75SH(31)
COOLING METHOD COOLING FAN MOTOR
OUTSIDE DIMENSIONS 489(W) x 275(H) x 361(D)
POWER LEVEL
%
10% 80W 4 sec 26 sec
20% 160W 7 sec 23 sec
30% 240W 10 sec 20 sec
40% 320W 13 sec 17 sec
50% 400W 16 sec 14 sec
60% 480W 19 sec 11 sec
70% 560W 22 sec 8 sec
80% 640W 25 sec 5 sec
90% 720W 28 sec 2 sec
100% 800W 30 sec 0 sec
ON TIME OFF TIME
2-2 Comparison Chart
MODEL
FEATURE
MORE/LESS ¡
AUTO COOK/DISH ¡
AUTO DEFROST ¡
TIME COOK ¡
POWER LEVEL ¡
INSTANT COOK ¡
MEMORY ¡
BOOST ¡
CHILD LOCK X
CLOCK ¡
GRILL ¡
COMBI X
G643C
G643C

3. Operating Instructions
3-1 Control Panel
Samsung Electronics 3-1
3-2 Features & External Views
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Door VentilationSlot Heater Light SafetyInterlockHoles
ControlPanel
OpenDoorPushButton
GuideRoller
MetalRack
GlassPlate
DoorLatches
Auto
10min
1min
h
10s.
min
G643C
1 min +
Auto
lbs. oz.
g
kg
489mm
356.5mm
275mm
203mm
361mm
Auto
10min
1min
h
10s.
min
G643C
1 min +
Auto
lbs. oz.
g
kg
Auto
10min
1min
h
10s.
min
G643C
1 min +
Auto
lbs. oz.
g
kg
Instant Cook Button
Auto Cook Button
Memory Button
Kg,g,more and less Button
Auto Defrost Button
Clock Setting Button
Timer Setting Button
MWO/Grill Cycle Button
Start and Boost Button
Stop Button
Grill Button
Power Level Selection Button
Cooking Timer/Standing
Timer Setting Button

4. Disassembly and Reassembly
4-1 Replacement of Magnetron, Motor Assembly and Lamp
Samsung Electronics 4-1
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 magnetron supporter.
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.
1. Discharge the high voltage capacitor.
2. Disconnect all the leads.
3. Remove the mounting bolts.
4. Reconnect the leads correctly and firmly.
4-1 Replacement of High Voltage Transformer
Lamp
Magnetron H. V. Trans
H. V. Capacitor
Screw
Thermo S/W
Fan Motor
H. V. Trans
Screws

4-3 Replacement of Door Assembly
4-3-1 Removal of Door Assembly
4-2 Samsung Electronics
Remove hex bolts securing the upper hinge and
lower hinge. Then remove the door assembly.
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.
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.
Remove pin hinge from Door "E"
Detach spring from Door "E" and key door.
4-3-2 Removal of Door "C"
4-3-3 Removal of Door "E"
Key Door Spring
Door "E"
Disassembly and Reassembly
Upper Hinge
Lower Hinge Screw
Screw
4-3-4 Removal of Key Door & Spring

Samsung Electronics 4-3
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.
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.
1. Take out the outer panel
2. Disconnect the connectors from the heater ceramic
and wire leade.
3. Remove screws securing the bracket upper to the oven
cavity.
4. Remove one screw securing the bracket heater.
4-4 Replacement of Fuse
4-5 Replacement of Drive Motor
4-6 Replacement of Ceramic Heater
Disassembly and Reassembly
Screw
Drive Motor Cover Base Plate
Drive Motor
Bracket Upper
Screw
Screw
Screw
ceramic
Heater
Bracket
Heater
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.

4-7 Replacement of Control Circuit Board
4-7-1 Removal of Ass'y Control Box
4-4 Samsung Electronics
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.
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.
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.
4-7-2 Remonal of Ass'y P.C.B
4-7-3 Removal of Window Display & Membrane Panel
Disassembly and Reassembly
Control Box
FPC Connector
Screw
Screw
Membrane
Panel
Window
Display

Samsung Electronics
5. Alignment and Adjustments
5-1 High Voltage Transformer
5-2 Low Voltage Transformer
5-3 Magnetron
5-1
1. Remove connectors from the transformer terminals
and check continuity.
2. Normal resistance readings are as follows:
(Room temperature = 20ûC)
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.
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.
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
Secondary
Terminal
Primary
Terminals
MODEL G643C
Secondary Approx. 130Ω
Filament Approx.0Ω
Primary Approx.1.920Ω
Terminals Resistance
1~2(Input) 1149Ω
4~5(Output 2.9V) 12.26Ω
7~8(Output17V) 2.574Ω
Cooling Fins
Gasket Plate
Magnetron Antenna

Samsung Electronics
5-4 High Voltage Capacitor
5-5 High Voltage Diode
5-6 Main Relay and Power Control Relay
5-7 Adjustment of Primary Switch, Door Sensing Switch and Monitor Switch
5-2
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.
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 KΩin
the other direction.
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.
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.
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.
Alignment and Adjustments
Door Open Door Closed
Primary switch ∞0
Monitor switch (COM-NC) 0 ∞
Monitor switch (COM-NO) ∞0
Door Sensing S/W ∞0
Primary Interlock Switch
Lever Door(B)
Body Latch
Door Sensing
Switch
Interlock Monitor
Switch

Samsung Electronics 5-3
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. (∆T)
6. The output power is obtained by the following formula;
* Output (W) = 100 x ∆T
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.
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:
Minimum
Temperature Rise
Heat Distribution = X 100(%)
Maximum
Temperature Rise
The result should exceed 65%.
4.187 x 1000 x ∆T
Output Power = 52.3
52.3 : Heating Time (sec)
4.187 : Coefficient for Water
1000 : Water (cc)
∆T : Temperature Rise (T2-T1)
5-8 Output Power of Magnetron
5-9 Microwave Heat Distribution - Heat Evenness
Alignment and Adjustments
D
D
D/4
D/4
D/4
D/4
Cooking Tray
Beaker
CAUTION
MICROWAVE RADIATION
PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS
CONDUCTING MICROWAVE ENERGY.

Samsung Electronics
1) Pour 275¡15cc of 20¡5¡( 68¡9¢) 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.
Alignment and Adjustments
Auto
10min
1min
h
10s.
min
G643C
1 min +
Auto
lbs. oz.
g
kg
5-13 Leakage Measuring Procedure
5-10 Procedure for Measurement of Microwave Energy Leakage
5-12Note on Measurement
5-11 Check for Microwave Leakage
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/§† 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.
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/cm2.
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.
Maximum allowable leakage is 5mW/cm2.
4mW/cm2is used to allow for measurement and meter accuracy

Samsung Electronics
6. Troubleshooting
6-1
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 Checkfanmotorwhenthermalcutoutisdefective.
Fuse is OK. 2. Open thermal cutout (Magnetron)
No display and no operation at all. 3. Open low voltage transformer Check Ass'y PCB when LVT is defective.
4. Defective Ass'y PCB
No display and no operation at all. 1. Shorted lead wire harness Checkadjustmentofprimary, interlock monitor,
Fuse is blown. 2. Defective primary latch switch (NOTE 1) door sensing switch.
3. Defective monitor switch (NOTE1)
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 power relay contacts and if it has continuity, replace 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
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 Adjust door and 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
Timer starts countdown but no cause magnetron to lower output and/or
microwave oscillation. intermittent oscillation.
(No heat while oven lamp and 3. Defective high voltage components Check high voltage component according to
fan motor turn on.) H.V.Transformer component test procedure and replace if it is
H.V.Capacitor defective.
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 Replace PCB main.

Samsung Electronics6-2
Troubleshooting
SYMPTOM CAUSE CORRECTIONS
Oven lamp and fan motor turn on 1. Misadjustment or loose wiring Adjust door and latch switches.
of primary latch switch
2. Defective primary latch switch
Oven can program but timer 1. Open or loose wiring of secondary Adjust door and interlock switches.
does not start. interlock switch
2. Off-alignment of primary interlock
3. Defective secondary interlock S/W
Microwave output is low;. 1. Decrease in power source voltage. Consult electrician.
Oven takes longer time to 2. Open or loose wiring of magnetron
cook food. filament circuit. (Intermittent oscillation))
3. Aging of magnetron
Fan motor turns on when plugged in Loose wiring of door sensing switch Check wire of door sensing switch.
Oven does not operate and return Defective Ass'y PCB Replace PCB main.
to the plugged in mode.
Loud buzzing noise can be heard. 1. Loose fan and fan motor Tighten screws of fan motor.
2. Loose screws on H.V.Transformer Tighten screws of H.V.Transformer.
3. Shorted H.V.Diode Replace H.V.Diode.
Turntable motor does not rotate. 1. Open or loose wiring of turntable motor. Replace turntable motor.
2. Defective turntable motor.(21V)
Oven stops operation during cooking 1. Open or loose wiring of primary Adjust door and latch switches.
interlock switch
2. Operation of thermal cutout(Magnetron)
Sparks 1. Metallic ware or cooking dishes Inform the customer.
touching on the oven wall.
2. Ceramic ware trimmed with gold or Do not use any type of cookware with
silver powder also causes sparks. 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 the turntable motor Noise may result from the motor. Replace turntable motor.
when it starts to operate.
6-1 Electrical Maltunction(continved)

7. Exploded Views and Parts List
7-1 Exploded Views
7-1
M1
M2
M34
M7
M13
M5
M4
M14 M35
M36
M19
M3
M28
M18
M20 M11
M16
M17
M22
M21
M25
M26
M23
M12
M15
M24
M27
M9
M10
B5
B4
B3
B2
B1
M37
D4
D5
D3
D2 D1
D7
D8
D6
M6
M30
M33
M29
M31
M32
C1
C7C2
C3
C4
C5
C6

7-2 Main Parts List
7-2 Samsung Electronics
Exploded Views and Parts List
Ref. No. Parts No. Description/Specification Q'ty Remarks
M 1 DE74-20017A TRAY-COOKING;GLASS(NEOREX/RE-31/) T6 OD288 1
M 2 DE92-90441B ASSY-GUIDE ROLLER;G645C D16.5 1
M 3 DE70-30116B PANEL-OUTER;SECC T0.6 W351.7 L1014.7 WHT-CO 1
M 4 DE61-80005A HINGE-UPPER;SCP1 T2.3 ZN-COATING M745 1
M 5 DE61-80004A HINGE-LOWER;SCP1 T2.3 ZN-COATING M745 1
M 6 ASSY DOOR;BUTTON WHT G643C 1
M 7 DE39-40543A WIRE HARNESS-A;230V50HZ G645C 1
M 8 ASSY CONTROL-BOX(C);230V50HZ G643C BASIC 1
M 9 DE66-90013A LEVER-DOOR;POM(F20-01) NTR MW5630T 1
M 10 DE93-20001A ASSY BODY LATCH;2ND W1 M97G45/M9745 1
M 11 DE63-90035G CUSHION-RUBBER;DFA20 T2 W190 L100 BLK 1
M 12 DE71-60010A COVER-AIR;PP(TB53) T1.7 WHT 64G M745 1
M 13 DE67-60002A COUPLER;PPS 5GR BRN M97G45 1
M 14 DE47-20161A THERMOSTAT;PW 2N(120/110)187Z23.250V/7.5A 1 1
M 15 4713-001031 LAMP-INCANDESCENT;230V,173mA,40W,ORG,-,-,25 1
M 16 DE47-20018A THERMOSTAT;PW-2N(150/60,187Y,30,250V/7.5A) 1
M 17 DE03-30029A MAGNETRON;OM75SH(31)ESS 1
M 18 DE39-20131A ASSY POWER CORD;KKDK 230V50HZ 1500 GRAY 1
M 19 DE47-70030D HEATER-CERAMIC;115V 490W 260HM 6 1
M 20 DE61-50401A BRACKET-HEATER;ALSTER T0.5 60 70 M67G45 1
M 21 DE91-40093A ASSY NOISE FILTER;SN-EI0D 250V 10A 1
M 22 DE31-30031A FAN-MOTOR;SMF745EA 230V/50HZ ASSY-FAN MOTOR 1
M 23 DE59-40001A DIODE-H.V;HVR-1X-32B-12 1
M 24 DE91-70061B ASSY-H.V.FUSE;THV060T-0750-H 5KV0.75A WHT 1
M 25 DE61-50106A BRACKET-HVC;SECC T0.8 W31 L125.8 1
M 26 2501-001036 C-OIL;950nF,2100V,BK,35x54x85,20mm 1
M 27 DE26-10121B TRANS-H.V;SHV-745EC1 230V 2230V/3.35V 50 1
M 28 DE47-20033A THERMOSTAT;PW-2N 80/70 125V15A/250V7.5A 187 1
M 29 DE71-60011A COVER-MGT;PP T2.0 WHT M745 1
M 30 DE80-10003A BASE-PLATE;SGCC1-Z T0.8 W340 L550 M745 1
M 31 DE61-40017A FOOT;PP(A353) BLK MW5630T 2
M 32 DE71-60298A COVER-BACK;SECC T0.6 W273 L633 M6Q45 1
M 33 DE31-10154A MOTOR-DRIVE;M2HJ49ZRO2,ST-16 21V 5/6 1
M 34 DE74-70071B RACK-WIRE;MSWR3 PI3 PI230 HI80 SNC2 1
M 35 DE39-30097B WIRE LEAD-G;L100 MBQ45 GRILL 1
M 36 DE61-50323B BRACKET-UPPER;ALSTAR T0.6 W385 L205 G643C 1
M 37 DE27-10020A COIL MC CHOKE;TC 101 1
: Option Parts : Warning :Electrostatically Sensitive Devices

Samsung Electronics 7-3
7-3 Door Parts List
Ref. No. Parts No. Description/Specification Q'ty Remarks
D 1 DE01-00003A FILM-DOOR;PE-FILM T0.15 W143 L265 M745 1
D 2 DE64-40008B DOOR-C;PP T1.5 BLK CE745G 1
D 3 DE64-40252A DOOR-A;ABS T2.5 W402 L258 WHT G643C 1
D 4 DE67-20158A SCREEN-DOOR;ACRYL T1.5 G643C 1
D 5 DE02-00125A TAPE-DOUBLE FACE;ACRYL T0.45 W9 WHT WF103 1
D 6 DE61-70033A SPRING-KEY;HSWR10 PI0.6 D6.0 L22.3 BLUIN 1
D 7 DE64-40006A DOOR-KEY;POM(TC3005) T2.0 12GR BLK CE945G 1
D 8 DE92-50126B ASSY DOOR-E;COATING BLK CE745G 1
7-4 Control Parts List
Ref. No. Parts No. Description/Specification Q'ty Remarks
C 1 DE91-10403A ASSY P.C.B-MAIN;230V50HZ NS VFD G643C(EURO)N 1
C 2 DE66-20171A BUTTON-PUSH;ABS WHT G643C 1
C 3 DE61-70076A SPRING-BUTTON;HSWR PI0.6 1
C 4 DE34-10212A SWITCH-MEMBRANE;PET 230V50HZ 89.4 156.4 G6 1
C 5 DE67-40142A WINDOW-DISPLAY;ACRYL BLK G643C 1
C 6 DE72-70164A CONTROL-PANEL;ABS WHT T2.5 G643C 1
C 7 CE93-30383A ASSY CONTROL-PANEL;S-DESIGN P/WHT G643/M643 1
7-5 Body Latch Parts List
Ref. No. Parts No. Description/Specification Q'ty Remarks
B 1 DE66-90001A LEVER-SWITCH;P.O.M (F20-02) 2 6 NTR 2ND-W-P/ 1
B 2 3405-000178 SW-MICRO;250V, 15A, 200gf,SPST-NO 1
B 3 3405-000175 SW-MICRO;250V, 15A, 200gf,SPST-NO 1
B 4 3405-000178 SW-MICRO;250V, 15A, 200gf,SPST-NO 1
B 5 DE66-40001A LATCH-BODY;POM (F20-02) 40GR NTR 1
Exploded Views and Parts List

Parts No. Description / Specification Q'ty Remarks
DE60-10012A SCREW TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 TOO 1 C/GE-M
DE60-10012A SCREW TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 TOO 2 HI-LOW
DE60-10012A SCREW TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 TOO 2HI-UPP
DE60-10012A SCREW TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 TOO 1 NO-FIL
DE60-10012A SCREW TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 TOO 1 P-CO-E
DE60-10013A SCREW-ASSY TAP;TH 2S 4 L12 MSWR3 ZPC3 FIBER 2CV/BLW0
DE60-10045A SCREW-TAP PH;PH M3 L6 FEFZY 2MGT-TC
DE60-10059A SCREW-TAP TH;TH M4 L8 SUS410 CR 2B/HEAT
DE60-10069A SCREW-TAP TH;TH M4 L10 FRFZY 3B/UPP
DE60-10069A SCREW-TAP TH;TH M4 L10 FRFZY 1CV/AIR
DE60-10080A SCREW-WASHER;M5 L12 2S 4HVT
DE60-10080A SCREW-WASHER;M5 L12 2S 4MGT
DE60-10082I SCREW-A;2S-4X12 FEFZY 4B-PLTE
DE60-10082I SCREW-A;2S-4X12 FEFZY 2BD/LAT
DE60-10082I SCREW-A;2S-4X12 FEFZY 2CON-PA
DE60-10082I SCREW-A;2S-4X12 FEFZY 4 OUT-PN
DE60-10082J SCREW-TAPPING;TH 2S-4X8 MSWR3 ZPC YEL WS 1B/HVC
DE60-10098A SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A ZPC2 1 CV/TCO
DE60-10098A SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A ZPC2 1 MWM-PN
DE60-10098A SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A ZPC2 2MO/DRI
DE60-10088A SCREW-TAP PH;PH M3 L8 FEFZY PLAIN 2PCB
DE60-10088A SCREW-TAP PH;PH M3 L8 FEFZY PLAIN 2
DE02-00029A TAPE-SCOTCHPAR;PPOLYESTER 3M-893 W50 1TR-CUS
7-4 Samsung Electronics
7-6 Standard Parts List
Exploded Views and Parts List

8. P.C.B Diagrams
8-1 P.C.B Diagrams
Samsung Electronics 8-1

8-2 Samsung Electronics
Parts No. Description / Specification Q'ty Remarks
3501-001014 RELAY-POWER;OMIF-S-124LM 24V,21.8MA,17A 1FO 1 RY01
3501-001015 RELAY-POWER;OZF-S-124LMP 24V,21.8MA,16A 1F 1 RY04
3501-001016 RELAY-MINIATURE;JV24-KT 24V,12.5MA,5A 1FORM 1 RY02,03
3708-000528 CONNECTOR-FPC/FC/PIC;FCZ254-13SL,BLK 13P,2. 1 CN02
DE07-10081A V.F.DISPLAY;SVM-4SMO3 GRN/RSHORG 4 51 81.70 1 VFD
DE09-30482A IC-MCU;KS56C671-40 DIP G645C(CIS) 1 IC01
DE26-20141A TRANS-L.V;SLV 945E 230V 50HZ AC17/2.0V 1 LVT1
DE30-20016A BUZZER;CBE2220BA STICK 1 BUZ1
DE61-90004A HOLDER-DIGITRON;NYLON#66 1.5 85 36 8GR BLK 1
0401-001002 DIODE-SWITCHING;1N4148M,100V,200mA,500mW,3n 16 D05~20
0402-000559 DIODE-RECTIFIER;D4G,400V,1A,T-1 3 D01,02,04
0501-000283 TR-SMALL SIGNAL;KSA539-Y,PNP,400mW,TO-92,TP 1 TR01
0501-000383 TR-SMALL SIGNAL;KSC815-Y,PNP,400mW,TO-92,TP 1 TR03
2001-000003 R-CARBON;330ohm,1/8W,AA,TP,1.8x3.2mm 1 R03,04
2001-000273 R-CARBON;100Kohm,5%,1/8W,AA,TP,1.8x3.2m 1 R12
2001-000290 R-CARBON;10Kohm,5%,1/8W,AA,TP,1.8x3.2m 6 R09,10,14~16,43
2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2m 7 R05~08,17~19
2001-000613 R-CARBON;3.9Kohm,5%,1/8W,AA,TP,1.8x3.2m 7 11,13,20~23,42
2001-000776 R-CARBON;470ohm,5%,1/2W,AA,TP,3.3x9m 1 R01
2001-000786 R-CARBON;47Kohm,5%,1/8W,AA,TP,1.8x3.2m 12 R30~41
2011-001043 R-NETWORK;47Kohm,5%,1/8W,A,SIP,8P,BK 1 AR01
2202-000780 R-CERAMIC,MLC-AXIAL;UPO50F104Z 100NF,+80-20 6 C06,09~12,15
2401-000247 C-AL;1SA1ANB107MAN 100UF,20%,10V,GP 6.3X11M 1 C04
2401-000353 C-AL;1SA1HWB101M 100UF,20%,50V,GP 10X16X5MM 1 C02
2401-000964 C-AL;1SA1HFB226MRP 22UF,20%,50V,GP 6.3*11,5 1 C05
2401-001412 C-AL;1SG1VFB477MAN 47UF,20%,35V,GP 10X16,5 1 C01
2801-000271 CRYSTAL-UNIT;HC-49/U,4.194304MHZ 12PF 4.194 1 X-TAL
3711-000203 CONNECTOR-HEADER;1WALL,3P,1R,3.96mm,SRAIGH 1 CN01
3711-000881 CONNECTOR-HEADER;SMW250-03,WHT BOX,3P,1R,2. 1 CN03
A1000-0620 R-CABON;RD 1/2 T(S) 331-J 1 R02
A1018-0067 R-NETWORK;RN 1/8 X 6P 473 J T MIR5A473J 1 AR02
A1100-1049 C-CERAMIC;CC OA CH 50V T 220-J 3.5X1.9 UP05 6 C07,08,16~19
A4060-0008 TR-W/RESISTOR;KSR1005 300MW 100MA 50V EBN/4 6 TR02,04~08
A4060-0009 TR-W/RESISTOR;KSR2005 300MW -100MA -50V EBP 1 TR09
A4106-0154 DIODE-ZENER;TZP5.1B 5.1/5.7V 40MA T 1W 3 ZD01~03
A6010-0461 CONNECTOR-WAFER;YW396-04V WHT 1 CN04
DE13-20009A IC;KA7533 DIP 1 IC02
DE39-60001A WIRE-SO COPPER;PI0.6 SN T 52MM 28 J01~28
DE60-60012A PIN-EYELET;ID2.1 OD2.5 L3.0 SN BSP T0.25 SN 8 E1~8
8-2 P.C.B Parts List
P.C.B Diagrams

9. Schematic Diagrams
9-1 Schematic Diagrams
9-1
230V~
50Hz
BRN
BRN BRN BRN BRN BRN
BLK
BLK
BLK
YELYEL
YEL
ORG
ORG
BLK
BLK
WHT
BLU
BLU BLU
0V21V
230V
WHT
WHT
BLU
500K
2200pFC2 C12200pF
LIN-CAPACITORT 0.1uF
BLU
E
E
ASSY CHOKE P.C.B
MGT
TCO CAVITY TCO
GRILL
RELAY
HEATER
GRILL THERMOSTAT
MONITOR
FUSE
(250V 1.6A)
TIMER
SWITCH
INRUSH RELAY
MAIN RELAY
L.V.T MAIN
RELAY POWER RELAY INRUSH RELAY GRILL RELAY
DOOR
SENSING
SWITCH
RESISTOR
MONITOR
SWITCH
POWER RELAY
F FA
MAGNETRON
NO
COM
NO
COM
NO NO BLK
BLK BLK
ORG
ORG
BLK
BLK BLK
BLU BLK
COM
0V
LAMP
(230V40W)
DRIVE MOTOR
FAN MOTOR
L.V.TRANS
PRIMARY
LATCH
SWITCH
DOOR SENSING
LATCH
SWITCH
MONITOR
SWITCH
L
FM
H.V.T
H.V.D
H.V.C (0.95uF)
H.V.FUSE
(0.75A)
1mH
BRN BROWN
BLU BLUE
ORG ORANGE
RED RED
WHT WHITE
BLK BLACK
YEL YELLOW
GRN GREEN
Y/G YELLOW/GREEN
SYMBOL COLOR
NOTE
FUSE 250V10A
DM
1. INPUT : 230V
2. DOOR : OPEN
3. LAMP : ON
4. : P.C.B PATTERN
5. : P.C.B IN/OUT
POINT
Samsung Electronics