Samsung CE124CF User manual

MICROWAVE OVEN
CE124CF
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 Diagrams
9. Schematic Diagrams
UHR
LEISTUNGGRILL
ZEIT/GEWICHT
AUFTAUEN
GAR-
AUTOMATIK
PLUS
HEISSLUFT MIKROWELLE
MW
+ HEISSL
MW
+ GRILL
GRILL
+ HEISSL
LÖSCHEN START
CE124CF
SCHNELLGERICHTE
1.GETRÄNKE
2.FOLIENKARTOFFEL
3.PIZZA
4.POMMESFRITES
5.HAMBURGER/FISCHSTÄBCHEN
6.REIS/NUDELN
7.POPCORN
AUFWARMEN
8.FERTIGGERICHTE
9.QUICHE/AUFLAUF
10.EINTOPF
11.SUPPE/SAUCE
12.REIS/NUDELN
GAR.AUTOMATIK
13.RIND
14.SCHWEIN
15.GEFLÜGEL
16.GEFLÜGELSTÜCKE
17.FISCH
18.GEMÜSE(FRISCH)
19.GEMÜSE(GEFROREN)
MINUS

1. Precaution
1-1 Safety precautions ( )
Samsung Electronics 1-1
Follow these special safety precautions. Although the microwave oven is completely safe during ordinary
use, repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as
potentially lethal high voltages and currents.
1. All repairs should be done in accordance
with the procedures described in this
manual. 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/cm2
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/cm2,
Make repairs to bring the unit into
compliance at no cost to owner and try to
determine cause.
Instruct owner not to use oven until it has
been brought into compliance.
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.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.

17. When checking the continuity of the
switches or transformer, always make sure
that the power is OFF, and one of the lead
wires is disconnected.
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. 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 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.
1-2
Pretaution
Samsung Electronics
1-2 Special Servicing Precautions (Continued)
1-3 Special High Voltage Precautions
=> : Touch chassis side first then short to the high voltage
capacitor terminal by using a screwdriver or jumper
wire.
PRECAUTION
There exists HIGH VOLTAGE ELECTRICITY with high
current capabilities in the circuits of the HIGH VOLTAGE
TRANSFORMER secondary and filament terminals. It is
extremely dangerous to work on or near these circuits
with the oven energized.
DO NOT measure the voltage in the high voltage circuit
including filament voltage of magnetron.
PRECAUTION
Never touch any circuit wiring with your hand nor with an
insulated tool during operation.
PRECAUTION
Servicemen should remove their watches whenever
working close to or replacing the magnetron.

2. Specifications
2-1 Table of Specifications
Samsung Electronics 2-1
MODEL CE124CF
ITEM
TIMER 99 MINUTES
POWER SOURCE 230V 50Hz, AC
POWER CONSUMPTION MAX : 3,000W
MICROWAVE : 1,600W
GRILL : 1,300W
CONVECTION : 1,400W
OUTPUT POWER 90W/900W(10 LEVEL POWER) (IEC-705 TEST PROCEDURE)
OPERATING FREQUENCY 2,450MHz
MAGNETRON OM75P(10)
COOLING METHOD COOLING FAN MOTOR
OUTSIDE DIMENSIONS 558(W) x 381(H) x 496(D)

3-1 Samsung Electronics
CONVECTION
MICROWAVE
P/LEVELGRILL
DEFROSTMW
+ CONV.
CLOCK
MW
+ GRILL
GRILL
+ CONV. AUTO/DISH
MORE
LESS
INSTANT COOK
1.DRINKS
2.JACKET POTATO
3.PIZZA
4.OVEN CHIPS
5.BURGERS/FISH FINGERS
6.RICE/PASTA
7.POPCORN
AUTO REHEAT
8.PLATED MEAL
9.PIE/QUICHE
10.CASSEROLE
11.SOUP/SAUCE
12.RICE/PASTA(REHEAT)
AUTO COOK
13.ROAST BEEF
14.ROAST PORK
15.ROAST CHICKEN
16.CHICKEN PIECE
17.FISH
18.FRESH VEGETABLE
19.FROZEN VEGETABLE
TIMER/WEIGHT
STOP/CANCEL START
CE124CF
WINDOW DISPLAY AND INDICATOR LIGHTS
* Funtion Indicator Lights indicate which cooking
funtion is being set or used.
* Digital Display shows time of day or time left to cook.
* Power Indicator Light Indicates which power is being
set or used.
FUNCTION SELECTOR BUTTONS
* Clock set
* Microwave, Power Level select
* Defrost, Auto cook and Dish select
* More, Less(Min Plus, Min Minus)
* Convection, grill, Combination cook
* Timer/Weight set
* Stop/Cancel, Start
3. Operating Instructions
3-1 Control Panel
3-2 Features & Accessories
ROLLER RING
CONTROL PANEL
HEATER GRILL
BARBECUE BAR
HOLDER
OVEN LAMP
GLASS TRAY
OVEN DOOR
THERMIISTOR SENSOR
WINDOW DISPLAY
OPEN DOOR
UHR
LEISTUNGGRILL
ZEIT/GEWICHT
AUFTAUEN
GAR-
AUTOMATIK
PLUS
HEISSLUFT MIKROWELLE
MW
+ HEISSL
MW
+ GRILL
GRILL
+ HEISSL
LÖSCHEN START
CE124CF
SCHNELLGERICHTE
1.GETRÄNKE
2.FOLIENKARTOFFEL
3.PIZZA
4.POMMESFRITES
5.HAMBURGER/FISCHSTÄBCHEN
6.REIS/NUDELN
7.POPCORN
AUFWARMEN
8.FERTIGGERICHTE
9.QUICHE/AUFLAUF
10.EINTOPF
11.SUPPE/SAUCE
12.REIS/NUDELN
GAR.AUTOMATIK
13.RIND
14.SCHWEIN
15.GEFLÜGEL
16.GEFLÜGELSTÜCKE
17.FISCH
18.GEMÜSE(FRISCH)
19.GEMÜSE(GEFROREN)
MINUS
COUPLER ROATING BASE TURNTABLE
TRAY
METAL
RACKS
BARBECUE
BAR
HOLDER CRUSTY PLATE MULTY SPIT

4 Magnetron flange nuts at top
Pin plate
screws (1) of damper
screws
(2) of
Magnetron
thermostat
Choke Coil
4. Disassembly and Reassembly
4-1 Replacement of Fan Motor and HVCapacitor
4-2 Replacement of Damper, Magnetron
4-3 Replacement of Lamp
Samsung Electronics 4-1
1. Remove out panel.
2. Disconnect all connectors and terminals.
3. Remove a screw 1) securing the fan motor
bracket.
4. Remove two screws 2) at back plate.
5. Remove a screw 3) securing HVC bracket for
removal of HVC.
1. After removing out panel and magnetron
supporter, disconnect all the terminals and
connectors from magnetron and damper assembly.
2. Remove four screws (1) securing damper Ass'y.
3. Remove two screws (2) securing magnetron
thermostat.
4. Remove four magnetron flange nuts at top.
=> : 1) When removing the magnetron, make sure that
its antenna does not hit any adjacent parts, or it
may be damaged.
2) when replacing the magnetron, be sure to
remount the magnetron gasket in the correct
position and make sure the gasket is in good
condition.
3) Never install magnetron without metalic gasket
plate, which should be packed with each
magnetron to prevent microwave leakage.
4) Check microwave leakage after repair work is
carried out on magnetron.
1) Remove out panel.
2) Remove two screws securing lamp holder.
(Top View) screw 1)
(Rear View)
screw 2)
screw 3) of HVC bracket
screws of lamp
Thermistor Probe
Thermal Cutout Switch

4-2 Samsung Electronics
Disassembly and Reassembly
4-4 Replacement of Door Assembly
4-7 Replacement of Casing Ass'y and Convection Heater
4-6 Replacement of Fuse
Remove hex bolts securing the upper hinge and
lower hinge. Then remove the door Ass'y.
• 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 may leak from the clearance between
the door and oven.
3. Perform the microwave leakage test.
4-5 Replacement of H.V.Transformer
1. Discharge the high voltage capacitor.
2. Disconnect all the leads from the high voltage
transformer.
3. Remove the mounting bolts on the high voltage
transformer.
4. When replacing, connect the leads correctly and
firmly.
Disconnect the oven from the power source and
remove the 15A fuse in the fuse holder in noise
filter Ass'y.
1. Remove out panel and back panel.
2. Disconnect all connectors and terminals.
3. Remove air duct and support-back.
4. Remove screws 1) securing convection heater Ass'y.
5. Remove nut'2', blade fan'3', spring washer'4' and bushing'5'.
6. Remove convection assembly '11', '12' and cooling fan'10'.
7. Remove four screws '6'.
8. Remove heater cover '7' '9'. Then heater adiabatic '8' will be disassembled.
Flange Bolts of upper hinge
Bolts & a screw of lower hinge
screws 1) of convection heater
2
4
3
57
8
9
10
11
12
6

Samsung Electronics 4-3
Disassembly and Reassembly
4-9 Replacement of Control Circuit Board
4-8 Replacement of Drive Motor
• Be sure to ground any static electric charge in you
body and never touch the touch control circuitry.
1. Remove 3 screws securing control panel Ass'y to oven front.
2. Remove screws holding control panel bracket '7' to control panel '1'.
3. Disconnect film connector from PCBoard assembly '9'.
4. Remove 3 screws securing PCB Ass'y.
5. Pull out membrane'4', window display'5' and door button'2'.
1. Take out the glass tray, guide roller and coupler from cavity.
2. Turn the oven upside down to replace the drive motor.
3. Cut out the drive motor cover with nipper and remove it from the base plate.
4. Disconnect all the lead wires from the drive motor.
5. Remove screws 1) securing the drive motor to the cavity.
6. Take out the drive motor.
7. When replacing the drive motor, be sure to remount it in the correct position.
1.DRINKS
2.JACKETPOTATO
3.PIZZA
4.OVENCHIPS
5.BURGERS/FISH
FINGERS
6.RICE/PASTA
7.POPCORN
AUTOREHEAT
8.PLATEDMEAL
9.PIE/QUICHE
10.CASSEROLE
11.SOUP/SAUCE
12.RICEPASTA(REHEAT)
AUTOCOOK
13.ROASTBEEF
14.ROASTPORK
15.ROASTCHICKEN
16.CHICKEN
PIECE
17.FISH
18.FRESHVEGETABLE
19.FROZEN
VEGETABLE
INSTANT COOK CLOCK
DEFROST
P/LEVEL
AUTOD/DISH
MORE/LESS
TIMER/WEIGHT
CANCEL START
MICROWAVE
GRILL
CONVECTION
MW+CONV.
MW+GRILL
GRILL+CONV.
21
3
6
7
9
8
Cut eight points of drive motor cover.
After replacing the drive motor, insert
boss to this tab and fit with two
screws 2).
screws 1)
Lead wires
screws 2)

4-6 Replacement of Control Circuit Board
4-6-1 Removal of Control Box Assembly
4-4 Samsung Electronics
1. Be sure to disclyarge any static electricity from your body, and avoid touching the "Touch control"
clrcuitry.
2. Disconnect the connectors from the control circuit board.
3. Remove screws securing the control circuit bord.
4. Lift up the control circuit board from right side and remove the hooks holding the contol circuit board to
the box assembly.
Disassembly and Reassembly
Screws
Screws

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:
Secondary ..........................Approx. 66W
Filament .............................Approx. 0W
Primary...............................Approx. 1.250W
(Room temperature = 20˚C)
Continuity checks can indicate only an open
filament or a shorted magnetron. To diagnose an
open filament or shorted magnetron :
1. Isolate the magnetron from the circuit by
disconnecting its leads.
2. A continuity check across the magnetron filament
terminals should indicate one ohm or less.
3. A continuity check between each filament terminal
and magnetron case should read open.
1. The low voltage transformer is located on the
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.
L.V.T SPEC. : SLV-105E
Terminals Resistance
1~2(Input) 290Ω
3~4(Output) 4.0Ω
5~6(Output) 1.0Ω
Cooling Fins
Gasket Plate
Magnetron Antenna
Filament Terminals
Secondary Terminal
Primary
Terminals

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.
NOTE : No specific adjustment during installation
of Primary switch and Monitor switch to the latch
body is necessary.
2. When mounting the Latch Body to the oven
assembly, adjust the Latch Body by moving it so that
the oven door will not have any play in it. Check for
play in the door by pulling the door assembly. Make
sure that the latch keys move smoothly after
adjustment is completed. Completely tighten the
screws holding the Latch Body to the oven assembly.
3. Reconnect to Monitor switch and check the
continuity of the monitor circuit and all latch
switches again by following the components test
procedures.
4. Confirm that the gap between the switch housing
and the switch actuator is no more than 0.5mm when
door is closed.
1. The relays are located on the PCB Ass'y. Isolate them from the main circuit by disconnecting the leads.
2. Operate the microwave oven with a water load in the oven. Set the power level 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 door sensing switches, and the interlock monitor switch (replace all
together). Then follow the adjustment procedures below. After repair and adjustment, be sure to check the continuity of all
interlock switches and the interlock monitor switch.
Alignment and Adjustments
Door Open Door Closed
Primary switch ∞0
Monitor switch (COM-NC) 0 ∞
Monitor switch (COM-NO) ∞0
Door Sensing S/W ∞0
Interlock Monitor S/W
Lever Slider A
Primary Interlock S/W
Door Sensing S/W
Lever Slider B
(Door Close Condition) (Door Open Condition)

Samsung Electronics 5-3
7. Normal temperature rise for this model is 9˚C to 11˚C at 'HIGH'.
NOTE 1: Variations or errors in the test procedure will cause a variance in the temperature rise.
Additional power test should be made if temperature rise is marginal.
NOTE 2: Output power in watts is computed by multiplying the temperature rise (step 5) by a factor of 90
times the of centigrade temperature.
4.187 x 1000 x ∆T+0.88xMcx(T2-T0)
Output Power = 46.5
46.5: Heating Time (sec)
4.187 : Coefficient for Water
1000 : Water (cc)
∆T : Temperature Rise (T2-T1)
Mc : Cylindrical borosilicate glass weight
To : Room temperature.
5-8 Output Power of Magnetron
Alignment and Adjustments
CAUTION
MICROWAVE RADIATION
PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS
CONDUCTING MICROWAVE ENERGY.
The output power of the magnetron can be measured by performing a water temperature rise test.
Equipment needed :
* Two 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm)
* One glass thermometer with mercury column
NOTE: Check line voltage under load. Low voltage will lower the magnetron output. Make all temperature
and time tests with accurate equipment.
1. Fill the one liter glass vessel with water.
2. Stir water in glass vessel with thermometer, and record glass vessel's temperature ("T1", 10±1˚C).
3. After moving the water into another glass vessel, place it in the center of the cooking tray. Set the oven to high
power and operate for 48seconds exactly. (1.5 seconds included as a holding time of magnetron oscillation:)
4. When heating is finished, stir the water again with the thermometer and measure the temperature ("T2").
5. Subtract T1 from T2. This will give you the water temperature rise. (∆T)
6. The output power is obtained by the following formula;
The microwave heat distribution can be checked indirectly by measuring the water temperature rise at
certain positions in the oven:
1. Prepare five beakers made of 'Pyrex', having 100 milliliters capacity each.
2. Measure exactly 100milliliters 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%.
5-9 Microwave Heat Distribution - Heat Evenness
D
D
D/4
D/4
D/4
D/4
Cooking Tray
Beaker

Samsung Electronics5-4
Alignment and Adjustments
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/cm2, after repair or adjustment.
UHR
LEISTUNGGRILL
ZEIT/GEWICHT
AUFTAUEN
GAR-
AUTOMATIK
PLUS
HEISSLUFT MIKROWELLE
MW
+ HEISSL
MW
+ GRILL
GRILL
+ HEISSL
LÖSCHEN START
CE124CF
SCHNELLGERICHTE
1.GETRÄNKE
2.FOLIENKARTOFFEL
3.PIZZA
4.POMMESFRITES
5.HAMBURGER/FISCHSTÄBCHEN
6.REIS/NUDELN
7.POPCORN
AUFWARMEN
8.FERTIGGERICHTE
9.QUICHE/AUFLAUF
10.EINTOPF
11.SUPPE/SAUCE
12.REIS/NUDELN
GAR.AUTOMATIK
13.RIND
14.SCHWEIN
15.GEFLÜGEL
16.GEFLÜGELSTÜCKE
17.FISCH
18.GEMÜSE(FRISCH)
19.GEMÜSE(GEFROREN)
MINUS
5-13 Leakage Measuring Procedure
5-10 Procedure for Measurement of Microwave Energy Leakage
5-12 Note 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/cm2 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±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 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
WARNING
AVOID THE HIGH VOLTAGE COMPONENTS.
Spacer Cone
Survey Meter

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 Malfunction
SYMPTOM CAUSE CORRECTIONS
Oven is dead. 1. Open or loose lead wire harness Check fan motor when thermal cutout is defective.
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 Check adjustment of primary, interlock monitor,
Fuse is blown. 2. Defective primary latch switch (NOTE 1) power relay, 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. Check the wire of turntable motor
2. Defective turntable motor. Replace turntable motor.
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 Malfunction(continued)

Samsung Electronics
7. Exploded Views and Parts List
7-1 Exploded Views
7-1
76
75
48
61
62
46
64
65
66 67
73
6
74
4
2
7
1
10
5
3
77 42
72
78
55
63
51
52
82
47
69
68
53
54
49
50
59
56
60
43
89
57
38
40
44
45
36
41
39
37
33 34 30
29
28
32
31 35
22
25
26
27
23
86
20
17
15
19
14
21
18
13
16
12
70
87
88
83
84
85
58
24
71
79
80
81

7-2 Main Parts List
7-2 Samsung Electronics
Exploded Views and Parts List
Ref. No. Parts No. Description Specification Q'ty Remarks
1 DE92-90315A ASSY-DAMPER COVER RE-1280 1
2 DE61-30100A SUPPORTER-BACK SECC,T0.6 1
3 DE92-90053A ASSY-COVER AIR RE-1200/1280/1270 1
4 DE39-40453E WIRE HARNESS-B 230V,RE-1280(SAW),AMFO 1
5 DE62-90016B ADIABATIC-L EGF-E3019-PBS,T10,W180,L180,AL 1
6 DE71-60316A COVER-ADIABATIC-L SBHG1-M,T0.5 1 COVE/L
7 DE92-90179A ASSY-BACK PANEL RE-1280 1
8 DE65-20022A BUSHING CORD IC002 1
9 DE39-20075G ASSY POWER CORD UD13A1,230V15A,L1500,BLK,CE102 1
10 DE39-40229E WIRE HARNESS-A 230V,RE-1280(SAW),AMFO 1
12 DE31-10020A MOTOR-FAN AMM90-004ATEB 1
13 2501-000234 C-OIL SCH-2121134B1,1.13F,2100VAC,54X35 1
14 DE61-50266A BRACKET-HVC SECC,T0.6 1
15 DE59-40001A DIODE-H.V HVR-1X-32B-12 1
16 DE39-30102A WIRE LEAD-B L540,2GA2 1
17 DE91-70061A ASSY-H.V.FUSE THV060T-0800-H,5KV/0/8A WH 1
18 DE61-30099A SUPPORTER-MGT SECC,T0.8 1
19 DE27-10020A COIL-MC CHOKE TC,101 1
20 OM75PH(10)ESS ASSY-MAGNETRON OM75PH(10)ESSS 1
21 DE47-20101A THERMOSTAT PW2N(160/60) 1 MGT
22 DE66-90028A LEVER-DAMPER POM-KEP,44G 1
23 DE72-20014A CAM POM(KEP,F20-02),RE-909CG 1
24 DE34-20026A SWITCH-MICRO VP331A-OD(PT2 1
25 DE70-90016A SHEET-INSK K POLYESTER,T0.5,W45,L24 1
26 DE61-50231A BRACKET-DAMPER SECC,T0.8 1
27 DE31-10052A MOTOR-SYNCHRONOUS M2LB49ZR02,DAMPER-MOTOR 1
28 DE60-60026A PIN-DAMPER MSWR3 1
29 DE67-60037A COUPLER-BARBECUE AL 1
30 DE31-10057A MOTOR-SYNCHRONOUS MULJ24ZR03,SPIT-MOTOR 1
31 DE72-40034A DAMPER-SILICON SILICONE 1
32 DE72-40037A DAMPER-PLATE SECC,T0.6 1
33 DE62-90015B ADIABATIC-R EGF-E3019-PBS,T15,W346,L282,AL 1
35 DE71-60216A COVER-DAMPER NYLON#66-2411GF,143.7G 1
34 DE71-60230D COVER-ADIABATIC-R SBHG1-M,T0.5 1
35 DE71-60216A COVER-DAMPER NYLON#66-2411GF,143.7G 1
36 DE66-40027A BODY-LATCH NULON#662411GF6,HB,NTR 1
37 3405-000175 SWITCH-MICRO 250V,15A,200gf,SPST-NO 1
38 DE61-30127A SUPPORTER-PCB DANC-6N 1
39 3405-000178 SWITCH-MICRO 250V,15A,200gf,SPST-NO 2
40 DE61-30129A SUPPORTER-PCB DASS-T9N 4
41 DE66-90062A LEVER-DOOR NYLON#66,2411GF6,HB,NTR 1
42 DE91-70100A ASSY-RESISTOR RE-1280(SAW),10W,30-J 1
43 DE26-10033A TRANS-H.V Y247STC,230V,50HZ,AC2260/3.3V 1
44 DE61-50232A BRACKET-DOOR LEVER SECC,T1.5 1
45 DE60-60026A PIN-DAMPER MSWR3 1
46 DE72-80023B SHAFT-BARBECUE RE-909CG 1
47 DE39-40117A WIRE HARNESS-C RE-909CG 1
48 DE92-90247A ASSY-COUPLER RE-1270/1280,EUROPE 1
49 DE61-50236A BRACKET-COVER MOTOR SECC,T0.8,RE-909CG 1
50 DE31-10039A MOTOR-SYNCHRONOUS MVLB51ZR11,220/240V50H 1
51 DE47-70016E HEATER-GRILL 230V,1300W,39OHM,D7.0,RE-1280, 1
52 DE61-30140A SUPPORTER-HEATER ALUMINA,10G,RE-650 1
53 DE62-90014B ADIABATIC-L EGF-E3019-PBS,T15,W351,L136,AL 1
54 DE71-60229D COVER-ADIABATIC-L SBHG1-M,T0.5 1
55 DE70-40073A PLATE-CEILING MICA-SHEET,T0.5 1
56 DE80-10049A BASE-PLATE SBHG1-R,T1.0 1
57 DE91-40091A ASSY-NOISE FILTER RE-1200,250V,15A,1200 1
58 DE26-20084A TRANS-L.V RE-1280STC,230V,50HZ,AC16/3V,R 1
59 DE61-80065A HINGE-LOWER SBC1,T3.0,DARCON 1
60 DE61-40029A FOOT DASF-330,RE-909CG 4

Samsung Electronics 7-3
7-2 Main Parts List
Ref. No. Parts No. Description Specification Q'ty Remarks
61 DE92-90019B ASSY-RACK WIRE CE124CF,HIGH,MAGENTA 1
62 DE92-90019S ASSY-WIRE RACK CE124CF,LOW 1
63 DE61-90094A HOLDER-BARBECUE PTFE,9G 1
64 DE32-10013A SENSOR-THERMISTOR PT-312-K2 1
65 4713-000168 LAMP-INCANDESCENT 230V,-,25W,ORG 1
66 DE47-40021A SOCKET-LAMP E/14(22.225) 1
67 DE61-50234A BRACKET-LAMP SECC,T0.8 1
68 DE71-60267A COVER-LAMP STS304,T0.4 1
69 DE67-40066A GLASS-PLATE TEMP-GLASS,T3.2 1
70 DE61-50282E BRACKET-HINGE U SBHG1-A,T1.2 1
71 DE61-70060A SPRING-PLATE SK-5,T0.5 1
72 DE62-90028C ADIABATIC-UPPER T6,W399,L353.8,CERAMIC,WOOL 1 C/UPP
73 DE47-20044A THERMOSTAT PW-2N,150/60,BKT23.8MM 1 GRILL
74 DE92-90100B ASSY-GUIDE AIR RE-1280/1270 1
75 DE92-90072A ASSY-BASE ROLLER RE-909CG 1
76 DE74-20045A TRAY-CERAMIC RE-909CG 1
77 DE93-90038A ASSY-B/RESISTOR FX175Z-D 1
78 DE61-50238A BRACKET-PLATE SECC.T0.6 1
79 DE64-20045A HANDLE-BARBECUE TEMPERED,SPRAY,BLK 2
80 DE74-20107A TRAY-BROILER AL,T0.8,345,345,PI345,ENAMEL,S 1
81 DE92-90009A ASSY-SPIT RACK CE124CF 1
82 DE61-30141A SUPPORTER-HEATER(B) ALUMINA,5G,RE-650 1
83 DE63-20019A GASKET-HEATER BRASS-WIRE 1
84 DE93-20013C ASSY BODY LATCH RE-1280(SAW) 1
85 DE60-60017A PIN-WIRE MSWR3,PI1.0 1
86 DE61-50165A BRACKET-HEATER MICA-SHEET,T0.5,W35,L91.5 1
87 3601-000438 FUSE-FERRULE 250V,15A,SB,CERAMIC,6.4X31.8MM 1
88 DE73-90027A FERRITE-CORE NI-ZN,T13.8,W21.0,L28.0,BNF-14 1
: Option Parts : Warning :Electrostatically Sensitive Devices
Exploded Views and Parts List

7-4 Samsung Electronics
Exploded Views and Parts List
7-3 Exploded View & Parts List - Door Parts
Ref. No. Parts No. Description Specification Q'ty Remarks
1 DE64-40045A DOOR-A PC-LEXAN141,RP-WH-01-K,310G,RE 1
2 DE67-20029E SCREEN-DOOR(B) TEMP,GLASS,T3.2XW313XL435,VITA 1
3 DE92-50037A ASSY DOOR-E SILICON,BONDING 1
4 DE64-40103A DOOR-C PBT-1500G,158G 1
5 DE64-40124A DOOR-KEY NYLON#66-2411GF,5.1G 2
6 DE92-90138A ASSY-BRACKET SLIDER RE-909CG 1
7 DE61-70057B SPRING-KEY HSWR,PI1.2,D5.8,L47 1
8 DE92-90052A ASSY-HINGE-U SBC1,T2.0 1
9 DE73-90018A FERRITE DB-867CPE,T4.1,W7.0,L1310 1
10 DE60-60021A PIN-DOOR MSWR,ZPC3 2
1
2
3
4
5
6
7
9
10
8

7-4 Exploded View & Parts List - Control Parts
Ref. No. Parts No. Description Specification Q'ty Remarks
1 DE66-20025A BUTTON-PUSH PC-LEXAN#141,RP-WH-01-K,19G,RE 1
2 DE72-70051M CONTROL-PANEL PC(LEXAN#141),RP-WH-01-K,230G 1
3 DE67-40027H WINDOW-DISPLAY ACRYL,SMOG,40G,AMFO 1
4 DE66-20041A BUTTON-CANCEL PC-LEXAN#141,RP-WH-01-K,6G,RE 2
5 DE66-20026A BUTTON-SELECT-L PC-LEXAN#141,RP-WH-01-K,16G 1
6 DE66-20042A BUTTON-SELECT-R PC-LEXAN#141,RP-WH-01-K,10G 1
7 DE66-20080A BUTTON-CLOCK PC-LEXAN#141,RP-WH-01-K,1G,RE 1
8 DE66-20024A BUTTON-MORE PC-LEXAN#141,RP-WH-01-K,7G,RE 1
9 DE61-50072A BRACKET-PANEL SECC,T0.8,W107,L286.35 1
12 DE39-30091A WIRE LEAD-PCB(B) L60,RE-1280(SAW),AMFO 1
13 DE64-10038C KNOB-VOLUME PC(LEXAN#141),WHT,5G,CIRCLE,PR 1
14 DE61-70076A SPRING-BUTTON HSWR,PI0.6 2
15 DE34-20030A SWITCH-VOLUME 4M17736 1
16 DE93-30066M ASSY CONTROL-BOX CE124CF(SAW),AMFO 1
13 114 2
4
15
3
5
9
12
6
7
8
11
Exploded Views and Parts List
Samsung Electronics 7-5