Samsung Microwave Oven Ce745Gr Users Manual

CE745GR to the manual 57d63d77-9240-4274-8187-a570124c0e0d

2015-01-23

: Samsung Samsung-Samsung-Microwave-Oven-Ce745Gr-Users-Manual-281187 samsung-samsung-microwave-oven-ce745gr-users-manual-281187 samsung pdf

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MICROWAVE OVEN
CE745GR
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
BWT
GRILL
CE745GR
lbs.
kg
oz.
g
1min+
h
10min min
1min
1-2-3
Auto Auto
10s.
Samsung Electronics
(a) Do not operate or allow the oven to be operated
with the door open.
(b) Make the following safety checks on all ovens
to be serviced before activating the magnetron
or other microwave source, and make repairs as
necessary:
(1) Interlock operation,
(2) proper door closing,
(3) seal and sealing surfaces (arcing, wear, and
other damage),
(4) damage to or loosening of hinges and latches,
(5) evidence of dropping or abuse.
(c) Before turning on microwave power for any
service test or inspection within the microwave
generating compartments, check the magnetron,
wave guide or transmission line, and cavity for
proper alignment, integrity, and connections.
(d) Any defective or misadjusted components in
the interlock, monitor, door seal, and
microwave generation and transmission
systems shall be repaired, replaced, or adjusted
by procedures described in this manual before
the oven is released to the owner.
(e) A Microwave leakage check to verify
compliance with the Federal performance
standard should be performed on each oven
prior to release to the owner.
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO
AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
1. Precaution
1-1 Safety precautions ( )
Samsung Electronics 1-1
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. Pacemaker wearers must consult a physician
before attempting to service an MWO.
8. Notify the Central Service Center if the
microwave leakage exceeds 5 mw/cm2
4. Check all grounds.
5. 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.
6. When reinstalling the chassis and its
assemblies, be sure to restore all protective
devices, including: nonmetallic control
knobs and compartment covers.
7. 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.
8. In the event of suspected microwave energy
leakage in excess of 5mW/§†, please notify
J.V.SAMSUNG SERVICE LTD.
MARSHAL ZHUKOU.,1.OFFICE 201
123308,MOSCOW,RUSSIA
9. Service technicians should remove their
watches while repairing an MWO.
10. 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.
11. 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.
12. 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.
13. 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.
14. 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.
15. 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.
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.
16. 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.
17. Components that are critical for safety are
indicated in the circuit diagram by
shading, or .
18. 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
Fig. 1-1. Discharging the High Voltage Capacitor
2. Specifications
2-1 Table of Specifications
Samsung Electronics 2-1
MODEL CE745GR
ITEM
TIMER 99 MINUTES 90 SECONDS
POWER SOURCE 230V/50HZ, AC
POWER CONSUMPTION MICROWAVE : 1,400W,GRILL : 1100W
OUTPUT POWER FROM85 TO 850W (10 LEVEL POWER)
(IEC-705 TEST PROCEDURE)
OPERATING FREQUENCY 2,450MHz
MAGNETRON OM75PH(31)
COOLING METHOD COOLING FAN MOTOR
OUTSIDE DIMENSIONS 191/4"(W) x 1027/32"(H) x 143/8"(D)
NET WEIGHT 36.3 LBS.
SHIPPING WEIGHT 39.6 LBS.
2-2 Comparison Chart
MODEL
FEATURE
MORE/LESS O
AUTO REHEAT O
AUTO DEFROST O
TIME COOK O
POWER LEVEL O
INSTANT COOK O
MEMORY O
BOOST -
CHILD LOCK O
CLOCK O
GRILL O
COMBI O
CE745GR
CE745GR
lbs.
kg
oz.
g
1min+
h
10min min
1min
1-2-3
Auto Auto
10s.
Auto Defrost Butten
Kg,g Button
Power Level Selection Button
Memory Button
Hold/Timer Button
Stop Button Start/Boost Button
Timer Setting Button
Grill Button
Combi Button
Clock Setting Button
More/Less Button
Auto Cook Button
Instant Cook Button
3. Operating Instructions
3-1 Control Panel
Samsung Electronics 3-1
3-2 Features & External Views
Door Ventilation Slot Light Safety Interlock Holes
Control Panel
Open Door Push Button
Guide Roller
GRILL WIRE RACK
Glass Plate
Door Latches
CE745GR
lbs.
kg
oz.
g
1min+
h
10min min
1min
1-2-3
Auto Auto
10s.
489mm
357mm
275mm
200mm
365mm
GRILL
CE745GR
lbs.
kg
oz.
g
1min+
h
10min min
1min
1-2-3
Auto Auto
10s.
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 500pF
capacitors (all of which are contained in one
assembly).
1. Disconnect all lead wires from the magnetron
and lamp.
2. Remove the bracket mounting.
3. Remove the air cover.
4. Remove screws securing the magnetron to the
wave guide.
5. Take out the magnetron very carefully.
6. Remove screws from the back panel.
7.Remove the assy noise filter.
8. Take out the fan motor.
9. Remove the oven lamp by pulling out from hole
of air cover carefully.
10. NOTE1: When removing the magnetron, make
sure that its antenna does not hit any
adjacent parts, or it may be damaged.
11. 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.
4-2 Replacement of High Voltage Transformer
Lamp
Cover Air
Magnetron H. V. Trans
H. V. Capacitor
Screw
Thermo S/W
Fan Motor
H. V. Trans
Bolts
BKT-Mountain
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.
4-3 Replacement of Door Assembly
4-3-1 Removal of Door Assembly
4-2 Samsung Electronics
Remove screws securing the upper hinge and
lower hinge. Then remove the door assembly.
Insert flat screwdriver into the gap between Door
"A" and Door "C" to remove Door "C". Be careful
when handling Door "C" because it is fragile.
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.
4-3-2 Removal of Door "C"
4-3-3 Removal of Door "E"
Disassembly and Reassembly
Upper Hinge
Lower Hinge Screw
Screw
Door "C"
Door "A"
Door "E"
4-3-4 Removal of Key Door & Spring
Samsung Electronics 4-3
1. Remove pin hinge from Door "E"
Detach spring from Door "E" and key door.
2. 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.
3. 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.
4. 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.
5. Do the microwave leakage test.
1. Disconnect the oven from the power source.
2. Remove the 10A fuse in the Noise filter.
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.
4-4 Replacement of Fuse
4-5 Replacement of Drive Motor
Key Door Spring
Door "E"
Disassembly and Reassembly
Screw
Drive Motor Cover Base Plate
Thermo
Switch
Drive Motor
4-6 Replacement of Control Circuit Board
4-6-1 Removal of Control Box Assembly
4-4 Samsung Electronics
1. Be sure to ground any static electric charge in
your body and never touch the control circuit.
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.
4-6-2 Removal of P.C.B Assembly
4-6-3 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
Primary
Terminals
MODEL CE745GR
Secondary 103.2Ω ¡10%
Filament Shows Continuity
Primary 1.61Ω ¡10%
Terminals Resistance
1~2(Input) 1149Ω
4~5(Output17V) 12.26Ω
7~8(Output2.9V) 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 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 ∞
Door Sensing S/W ∞0
Primary Interlock Switch
Lever Door
Body Latch Door Sensing
Switch
Interlock Monitor
Switch
Samsung Electronics 5-3
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 5) by a factor of 85
times the of centigrade temperature.
4.187 x 1000 x ∆T+0.88xMcx(T2-T0)
Output Power = 49.25
49.25: 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.
5 9 Leakage Measuring Procedure
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 51seconds 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;
5-9-1 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 5 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 ;
J.V.SAMSUNG SERVICE LTD.
MARSHAL ZHUKOU.,1.OFFICE 201
123308,MOSCOW,RUSSIA
5-9-2 At least once a year have the microwave energy
survey meter checked for accuracy by its
manufacturer.
Samsung Electronics5-4
Alignment and Adjustments
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%.
5-10 Microwave Heat Distribution - Heat Evenness
D
D
D/4
D/4
D/4
D/4
Cooking Tray
Beaker
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) 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
M1
M6
M30
M32
M38
C1
C2
C3 C4 C5 C6
M37
D1
D2
D3
D5
D6
M33
M34
M22
M26 M24
M25
M27
M28
M29
M3
M7
M8
M9 M10
M11
M4
M2
M14
M20
M5
M15
M18
M16
M17
M19
M21
B1
B2
B4
B3
B5
M12
D4
D7
M35
M36
M31
M39
M40
M41
M43
M42 M44
M23
M13
7-2 Main Parts List
7-2 Samsung Electronics
Exploded Views and Parts List
Ref. No. Parts No. Description/Specification Q'ty Remarks OLD PARTS NO.
M 1 DE70-30032X PANEL-OUTER;T0.6 W351.2 L1010 WHT-COATIN 1
M 2 DE63-90150A CUSHION-RUBBER;DFA20 T2 W100 L140 BLK 1
M 3 DE61-50323A BRACKET-UPPER;ALSTAR T0.6 W385 L205 M624 1 73011-0243-00
M 4 DE61-30008A SUPPORTER-HEATER;ALUMINA T12 CE745G 1
M 5 DE61-70060A SPRING-PLATE;SK-5 T0.5 1 76674-232-810
M 6 DE47-70072A HEATER-GRILL;230V 1100W 47.OHM 6.25 1
M 7 DE60-40009B WASHER-TEFLON;SLOT ID22.2 OD28 T1.2 TEFL 1 70534-0004-02
M 8 DE63-20017A GASKET-HEATER;BRASS T1.5 OD30.5 ID22.5 1 73404-0014-00
M 9 DE61-50021A BRACKET-FLANGE;SECC1 T0.8 32 32 1
M 10 DE61-50027A BRACKET-HEATER;BSS2-A T(1.0) W(51) L(55) 1
M 11 DE61-50025A BRACKET-EARTH;BSS2-A T1.0 CE745G 1
M 12 DE39-20058C ASSY POWER CORD;KKP-4819D/B232 250V16A L 1
M 13 DE71-60298A COVER-BACK;SECC T0.6 W273 L633 M6Q45 1 73312-0184-001
M 14 DE91-40095A ASSY NOISE FILTER;SN-E10D(N) 250V 10A “2 1
M 15 DE31-30031A FAN-MOTOR;SMF745EA 230V/50HZ ASSY-FAN-MO 1
M 16 DE47-20009A THERMOSTAT;CS-7SA(160/60)187Y 250V7.5A 1 1
M 17 DE03-30035A MAGNETRON;OM75PH((31)ESS 1 77059-0034-00
M 18 4713-001004 LAMP-INCANDESCENT;230V,-,40W,ORG,-,-,25x 1
M 19 DE71-60010A COVER-AIR;PP(TB53) T1.7 WHT 64G M745 1
M 20 DE61-50129A BRACKET-MOUNTING;SECC T0.8 W24 L316 M624 1 73013-0342-00
M 21 DE93-20001A ASSY BODY LATCH;2ND-W1 M97G45/M9745 1
M 22 DE66-90013A LEVER-DOOR;POM(F20-01) NTR MW5630T 1 71533-0015-00
M 23 DE91-70061B ASSY-H.V.FUSE;THV060T-0750-H 5KV0.75A RE 1 79163-0252-01
M 24 DE61-50106A BRACKET-HVC;SECC T0.8 W31 L125.8 1 73013-0194-00
M 25 DE91-70065A ASSY-HVD;BMP28 SEMA 12KV SUMI 1 79169-0153-00
M 26 2501-001014 C-OIL;HCH212105C 1.05UF,2100V 35X54X85,2 1
M 27 DE26-10099A TRANS-H.V;SHV-745EG1 230V 50HZ 2200V DPC 1
M 28 DE61-40017A FOOT;PP(A353) BLK MW5630T 2 73004-0007-00
M 29 DE80-10003A BASE-PLATE;SGCC1-Z T0.8 W340 L550 M745 1
M 30 DE31-10154A MOTOR-DRIVE;M2HJ49ZR02,ST-16 21V 5/6 1
M 31 DE47-20008A THERMOSTAT;CS-7S(100/60)187Y 250V7.5A 10 1
M 32 DE71-60013A COVER-CEILING;MICA T0.5 W52 L118 CE745G 1
M 33 DE61-80004A HINGE-LOWER;SCP1 T2.3 ZN-COATING BLK 1
M 34 DE61-80005A HINGE-UPPER;SCP1 T2.3 BLK ZN-COATING 1
M 35 DE47-20174A THERMOSTAT;NT-101NA 8XH 120 110 23.8MM 1
M 36 DE65-20014A CABLE CLAMP;DA-6N NY-66 1 76449-0003-00
M 37 ASSY DOOR;PUSH WHT CE745GR 1
M 38 ASSY CONTROL-BOX;230V-50HZ CE745GR(CIS) 1
M 39 DE74-20102B TRAY-COOKING;GLASS T5.0 PI288 780G M745 1
M 40 DE92-90436A ASSY-GUIDE ROLLER;MW4370W 1
M 41 DE67-60002A COUPLER;PPS 5GR BRN M97G45 1
M 42 DE74-70071A RACK-WIRE;MSWR3 PI3 PI230 HI80 SNC2 1
M 43 DE39-40409A ASSY WIRE HARNESS-E;230V50HZ M9G45 CTW 1 79204-0381-00
M 44 DE39-40568A ASSY WIRE HARNESS-A;230V50HZ CE745G/CE94 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 Old Parts No.
D 1 DE64-40007A DOOR-A;ABS(VH-080) T3.0 WHT 1
D 2 DE64-40006A DOOR-KEY;POM(TC3005) T2.0 12GR BLK CE9 1
D 3 DE61-70033A SPRING-KEY;ES HSWR10 PI0.6 D6.0 L22.3 BL 1 72724-0040-00
D 4 DE67-20004D SCREEN-DOOR;PC T1.5 W173.6 L373.5 WHT CE 1
D 5 DE92-50126B ASSY DOOR-E;COATING BLK CE745G 1
D 6 DE64-40008B DOOR-C;PP T1.5 W L G BLK CE745G 1
D 7 DE01-00003B FILM-DOOR;PC T0.2 W143 L265 TRP CE745G 1
7-4 Control Parts List
Ref. No. Parts No. Description/Specification Q'ty Remarks Old Parts No.
C 1 DE66-20006A BUTTON-PUSH;RESIN-ABS(HR-0370U) P/WHT M9 1
C 2 DE61-70076A SPRING-BUTTON;HSWR PI0.6 1 76674-239-310
C 3 DE34-10007C SWITCH-MEMBRANE;PET 230V50HZ W89.7 L161. 1
C 4 DE72-70003A CONTROL-PANEL;ABS(VH-080) WHT 1
C 5 DE67-40002A WINDOW-DISPLAY;RESIN-ACRYLIC T2.3 M945(I 1
C 6 DE91-10377A ASSY P.C.B-MAIN;230V50HZ NS V.F.D CE945G 1
7-5 Body Latch Parts List
Ref. No. Parts No. Description/Specification Q'ty Remarks Old Parts No.
B 1 DE66-40001A LATCH-BODY;POM(F20-02) 40GR NTR 1
B 2 3405-000178 SWITCH-MICRO;VP-533A-OF-PS(T85) 250V,15A 1 73579-203-207
B 3 3405-000175 SWITCH-MICRO;VP-531A-OF(T85) 250V,15A,20 1 73579-203-278
B 4 3405-000178 SWITCH-MICRO;VP-533A-OF-PS(T85) 250V,15A 1 73579-203-207
B 5 DE66-90001A LEVER-SWITCH;P.O.M(F20-02) 2 6 NTR 2ND-W 1
Exploded Views and Parts List
Parts No. Description / Specification Q'ty Remarks Old Parts No.
DE60-10012A SCREW-TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 1 NO-FIL 70504-0002-00
DE60-10012A SCREW-TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 1 P-CO-E 70504-0002-00
DE60-10012A SCREW-TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 2 HI-UPP 70504-0002-00
DE60-10122A SCREW-TAP TH;TAP TH 2-4X8 FE FN 2 C-CEIL 77128-240-085
DE60-10122A SCREW-TAP TH;TAP TH 2-4X8 FE FN 2 B/HEAT 77128-240-085
DE60-10098A SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A Z 2 MO/DRI A0103-0010
DE60-10082I SCREW-A;2S-4X12 FEFZY 4 OUT-PN 77154-203-8201
DE60-10082I SCREW-A;2S-4X12 FEFZY 4 B-PLTE 77154-203-8201
DE60-10080A SCREW-WASHER;M5 L12 2S 4 MGT 77154-202-910
DE60-10080A SCREW-WASHER;M5 L12 2S 4 HVT 77154-202-910
DE60-10069A SCREW-TAP TH;TH M4 L10 FRFZY 1 CV/AIR 77128-540-101
DE02-00029A TAPE-SCOTCHPAR;POLYESTER 3M-893 W50 1 TR-CUS 70859-800-311
DE60-10069A SCREW-TAP TH;TH M4 L10 FRFZY 3 B/UPP 77128-540-101
DE60-10012A SCREW-TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 2 HI-LOW 70504-0002-00
DE60-10098A SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A Z 1 MEM-PN A0103-0010
DE60-10098A SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A Z 1 CV-TCO A0103-0010
DE60-10082J SCREW-TAPPING;TH 2S-4X8 MSWR3 ZPC YEL WS 1 B/HVC 77154-203-8401
DE60-10082I SCREW-A;2S-4X12 FEFZY 2 BD-LAT 77154-203-8201
DE60-10082I SCREW-A;2S-4X12 FEFZY 2 CON-PA 77154-203-8201
DE60-10012A SCREW-TAP TITE;TH + 3 M4 L10 SWR10 ZPC2 1 C/GE-M 70504-0002-00
DE60-10098A SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A Z 2 MGT-TC A0103-0010
DE60-10052A SCREW-TAP PH;PH M4 L8 FEFZY 2 GR-TCO 77108-540-081
DE60-10018A SCREW-ASSY MACHINE;PH M4X0.7P 8 MSWR10 S 2 B/EATH 70504-0019-00
DE60-10013A SCREW-ASSY TAP;TH 2S 4 L12 MSWR3 ZPC3 FI 2 CV/BLW 70504-0004-00
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
0401-001002 DIODE-SWITCHING;1N4148M,100V,200mA,500mW 16 D5~20
0402-000559 DIODE-RECTIFIER;D4G,400V,1A,T-1 3 D01,2,4
0501-000283 TR-SMALL SIGNAL;KSA539-Y,PNP,400mW,TO-92 1 TR01
0501-000388 TR-SMALL SIGNAL;KSC815-Y,NPN,400mW,TO-92 1 TR03
2001-000003 R-CARBON;330ohm,5%,1/8W,AA,TP,1.8x3.2mm 2 R03,04
2001-000037 R-CARBON(S);330ohm,5%,1/2W,AA,TP,2.4x6.4 1 R02
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,1.8x3.2mm 6 R9,10,14,15,16,43
2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm 7 R05~08,17~19
2001-000613 R-CARBON;3.9Kohm,5%,1/8W,AA,TP,1.8x3.2m 1 R11,13,20,21,22,23,42
2001-000776 R-CARBON;470ohm,5%,1/2W,AA,TP,3.3x9mm 1 R01
2001-000786 R-CARBON;47Kohm,5%,1/8W,AA,TP,1.8x3.2mm 12 R30~41
2011-001043 R-NETWORK;47Kohm,5%,1/8W,A,SIP,8P,BK 1 AR01
2202-000780 C-CERAMIC,MLC-AXIAL;UP050F104Z 100NF,+80 6 C6,9,10,11,12,15
2401-000247 C-AL;1SA1ANB107MAN 100UF,20%,10V,GP 6.3X 1 C04
2401-000353 C-AL;1SA1HWB101M 100UF,20%,50V,GP 10X16X 1 C02
2401-000914 C-AL;CESSL1C220M0511AA 22UF,20%,16V,GP 5 1 C05
2401-001412 C-AL;1SG1VFB477MAN 470UF,20%,35V,GP 10X1 1 C01
3501-001014 RELAY-POWER;OM1F-S-124LM 24V,21.8MA,17A 1 RY01
3501-001015 RELAY-POWER;OZF-S-124LM1P 24V,21.8MA,16A 1 RY04
3501-001016 RELAY-MINIATURE;JV24-KT 24V,12.5MA,5A 1F 2 RY02,03
3708-000528 CONNECTOR-FPC/FC/PIC;FCZ254-13SL,BLK 13P 1 CN02
3711-000203 CONNECTOR-HEADER;YW396-03AV WHT STRAIGHT 1 CN01
3711-000881 CONNECTOR-HEADER;SMW250-03,WHT BOX,3P,1R 1 CN03
A1018-0067 R-NETWORK;RN 1/8 X 6P 473-J T MHR5A473J 1 AR02
A1100-1049 C-CERAMIC;CC OA CH 50V T 220-J 3.5X1.9 U 6 C7,8,16~19
A4060-0008 TR-W/RESISTOR;KSR1005 300MW 100MA 50V EB 5 TR2,4~8
A4060-0009 TR-W/RESISTOR;KSR2005 300MW -100MA -50V 1 TR09
A4106-0154 DIODE-ZENER;TZP5.1B 5.1/5.7V 40MA T 1W 3 ZD1,2,3
A6010-0461 CONNECTOR-WAFER;YW396-04V WHT 1 CN04
B1283-0030 RESONATOR-CERAMIC;4.19MHZ 4.19MSTAR 2/CN 1 X-TAL
DE07-10081A V.F.DISPLAY;SVM-4SM03 GRN/RSHORG 4 51 81 1 VFD
DE09-30479A IC-MCU;KS56C671-43 DIP CE945G/CE745G 1 IC01
DE13-20009A IC;KA7533 DIP 1 IC02
DE26-20141A TRANS-L.V;SLV-945E 230V 50HZ AC17/2.9V 1 LVT1
DE30-20016A BUZZER;CBE2220BA STICK 1 BUZ1
DE39-60001A WIRE-SO COPPER;PI0.6 SN T 52MM 26 J01~26
DE60-60012A PIN-EYELET;ID2.1 OD2.5 L3.0 SN BSP T0.25 8 E1~8
DE61-90004A HOLDER-DIGITRON;NYLON#66 1.5 85 36 8GR B 1
8-2 P.C.B Parts List
P.C.B Diagrams
9. Schematic Diagrams
9-1 Schematic Diagrams
9-1
FM
L
BRN BRN
ASSY CHOKE P.C.B MGT
TCO BLK
BLK
FUSE
BLU
BLU
BLU
WHT
WHT
BLK
PRIMARYS/W
DOOR SENSING
S/W
FA
F
MAGNETRON
NO
COM NO
COM NO
NC
BLK
WHT BLK
ORG
ORG
BLK
BLK BLK BLK BLU
COM
MAIN
RELAY POWER
RELAY INRUSH
RELAY GRILL
RELAY
DM
HEATER
L.V.TRANS
MAIN RELAY
D-MOTOR
L.V.T
DOOR SENSING
SWITCH MONITOR
SWITCH
PRIMARY LATCH
SWITCH
KEY BOARD
CONDITION OF OVEN
DOOR IS OPENED
BRN : BROWN
WHT : WHITE
RED : RED
BLK : BLACK
Y/G : YELLOW GREEN
BLU : BLUE
ORG : ORANGE
YEL : YELLOW
COOK OFF
WIRING COLOR A S S Y M A I N P.C.B
BLK
POWER
CORD
230V/50HZ
250V10A
C1
1ND
C3
RESISTOR
GRILL
RELAY
BLK
CAVITY
TCO
BLK
BLK
COM
COM
NC NO
BLU
BLU
230V40W LAMP
MONITOR FUSE
(250V1.6A)
YEL
ORG
ORG
YEL
YEL
F-MOTOR
INRUSH RELAY RESISTOR
POWER RELAY
(SECONDARY INTERLOCK)
WHT
WHT
WHT
0V
0V
21V
230V
C2
CAVITY
TCO
BLK
230V
H.V.TRANS
H.V.DIODE
H.V.FUSE
(0.75A-CE745G/
0.8A-CE945G)
H.V.CAPACITOR
1.INPUT : 230V
2.DOOR : OPEN
3.LAMP : ON
4. : P.C.B PATTERN
5. : P.C.B IN/OUT POINT
MAGNETRON
FA F
RED
RED
RED
RED
SYMBOL COLOR
BRN BROWN
BLK BLACK
RED RED
BLU BLUE
WHT
BLK
HIGH VOLTAGE
TRANSFORMER
HIGH VOLTAGE CAPACITOR
HIGH VOLTAGE
DIODE TO CHASSIS
H.V.FUSE
Samsung Electronics

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