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ME16H702SEW_AA_140123


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BASIC :      SMH1622
MODEL :      ME16H702SES/AA




    1. Precaution
    2. ProductSpecification
    3. Disassembly and Reassembly
    4. Troubleshooting
    5. PCB Diagrams
    6. Wiring Diagrams
1. Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
   1-1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
   1-2 Special High Voltage Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

                     . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
    2-1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
    2-2 Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
                                       . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3. Disassembly and Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
   3-1 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
   3-2 Replacement of High Voltage Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
   3-3 Replacement of Magnetron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
   3-4 Replacement of Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
   3-5 Replacement of Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
   3-6 Replacement of Drive Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
   3-7 Removal of stirrer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
   3-8 Replacement of Control Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
   3-9 Replacement of Cooktop lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
   3-10 Replacement of Oven Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
    4-1 Parts checking method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
    4-2 Error Code Numbering Rule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
    4-3 Error Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
    4-4 Electrical Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

5. PCB Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
   5-1 PCB Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

6. Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
   6-1 Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32




                                                                                     2
1. Precaution




                3
1. Precaution

Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use,
repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as potentially
lethal high voltages and currents.

1-1 Safety precautions (                     )
1.  All repairs should be done in accordance with the             13. Design Alteration Warning: Use exact replacement
    procedures described in this manual. This product
    complies with Federal Performance Standard 21                     thedrawings and parts lists of this manual. This
    CFR                                                               is especially important for the Interlock switches,
2. Microwave emission check should be performed to                    described above. Never alter or add to the
    prior to servicing if the oven is operative.                      mechanical or electrical design of the MWO.
                                                                      Any design changes or additions will void the
3. If the oven operates with the door open instruct
                                                                      manufacturer's warranty. Always unplug the unit's
    the user not to operate the oven and contact
                                                                      AC power cord from the AC power source before
    the manufacturer and the center for devices and
                                                                      attempting to remove or reinstall any component or
    radiological health immediately.
                                                                      assembly.
4. Notify the Central Service Center if the microwave
                                                                  14. Never defeat any of the B+ voltage interlocks. Do not
    leakage exceeds 5 mW/cm2.
                                                                      apply AC power to the unit (or any of its assemblies)
5. Check all grounds.                                                 unless all solid-state heat sinks are correctly
6. Do not power the MWO from a "2-prong" AC cord.                     installed.
    Be sure that all of the built-in protective devices are       15. Some semiconductor ("solid state") devices
    replaced. Restore any missing protective shields.                 are easily damaged by static electricity. Such
7. When reinstalling the chassis and its assemblies,                  components are called Electrostatically Sensitive
    be sure to restore all protective devices, including:             Devices (ESDs). Examples include integrated
    nonmetallic control knobs and compartment covers.
8. Make sure that there are no cabinet openings                         before handling any semiconductor components or
    through which people --particularly children--might                 assemblies, drain the electrostatic charge from your
    insert objects and contact dangerous voltages.                      body by touching a known earth ground.
    Examples: Lamp hole,ventilation slots.                        16.   Always connect a test instrument's ground lead to
9. Inform the manufacturer of any oven foundto have                     the instrument chassis ground before connecting the
    emission in excess of 5 mW/cm2 ,Make repairs to                     positive lead; always remove the instrument's ground
    bring the unit into compliance at no cost to owner                  lead last.
    and try to determine cause. Instruct owner not to use         17.   When checking the continuity of the witches or
    oven until it has been brought into compliance.                     transformer, always make sure that the power is
    CENTRAL SERVICE CENTER                                              OFF, and one of the lead wires is disconnected.
10. Service technicians should remove their watches               18.   Components that are critical for safety are indicated
    while repairing an MWO.                                             in the circuit diagram by shading,    or    .
11. To avoid any possible radiation hazard,replace parts          19.   Use replacement components that have the same
    in accordance with the wiring diagram. Also, use
    only the exact replacements for the following parts:
    Primary and secondary interlock switches, interlock                 not have the same safety characteristics as the
    monitor switch.
12. If the fuse is blown by the Interlock Monitor Switch:               NOTE : Connect the oven to a 20A. When
    Replace all of the following at the same time:                      connecting the oven to a 15A,make sure that circuit
    Primary, door sensing switch and power relay, as                    breaker can operate.
    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.




                                                              4
1. Precaution

1-2 Special High Voltage Precautions
1.   High Voltage Warning Do not attempt to measure any of          H. V. Capacitor

     magnetron. High voltage is present during any cook cycle.
     Before touching any components or wiring, always unplug
     the oven and discharge the high voltage capacitor (See
     Figure 1-1)
2.   The high-voltage capacitor remains charged about 30
     seconds after disconnection. Short the negative terminal
     of the high-voltage capacitor to to the oven chassis. (Use a
     screwdriver.)
3.
     tolerance, safety-related components and adjustments. If

     of the special components.

                                                                                                   H. V. Diode
                                                                                           Short




           PRECAUTION
     There exists HIGH VOLTAGE ELECTRICITY with high current capabilities in the circuits of the HIGH

     near these circuits with the oven energized.




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




           PRECAUTION
     Never touch any circuit wiring with your hand nor with uninsulated tool during operation.




                                                            5
2-1 Features
                         Product Features
               The new Samsung OTR with Stainless Steel, has a professional look and
               the design matches great with other kitchen appliances, so It provides


               Continually rotates food to ensure even cooking.
               Instant On Controls - Allow quick, one touch cooking and reheating.
               Two speed, 300CFM venting system - Quickly removes smokr and steam
                                                  from cook top




                                  6
2-2 Accessory

       Item          Description             Code No.     Q'ty



                   TRAY-COOKING             DE63-00624A    1




                ASSY-GUIDE ROLLER           DE92-90495C    1




                ASSY-HOOD DAMPER            DE92-90242D    1




                 ASSY-HARD WARE             DE92-90505G    1




                     FILTER-AIR             DE63-00666A    2




                 FILTER-CHARCOAL            DE63-00367E    1




                     Top Template           DE68-03589A    1




                     Wall template          DE68-02230P    1




                Installation instructions   DE68-03587A    1




                 Use and Care Guide         DE68-03970B    1




                                     7
                                        Basic Model                                   New Model
                Items
                                         SMH1622                      ME16H702SEB,W,S/AA    ME16H702SEB,W,S/AC
Cavity Size (cu.ft.)                         1.6                                 1.6                            1.6
Power
Power Source                            120 V / 60 Hz                      120 V / 60 Hz                   120 V / 60 Hz
Output Power
                                            1000                                1000                           1000
(Watts)
Power Consumption
                                          1580/13.5                          1580/13.5                      1500 / 13.0
(Watts/Amp)
Characteristics
Control Method                              Touch                              Touch                           Touch
Display                                      LED                                LED                            LED
Sensor                                       No                                  No                             No
Turntable Distribution                    Turntable                           Turntable                      Turntable
Vent Fan CFM                                 300                                300                             220
Vent Orientation                           Vertical                            Vertical                       Vertical
Vent Fan Control                          Hi/Lo/Off                           Hi/Lo/Off                      Hi/Lo/Off
Cooktop Lighting                        Icandescent                         Icandescent                     Icandescent
Cabinet Colour                    STSS/Black/White/Silver                STSS/Black/White               STSS/Black/White
Cavity Interior                             Epoxy                              Epoxy                          Epoxy
Cabinet Dimensions W x H x D
                                 29 7/8" x 16 1/2" x 15 1/16"       29 7/8" x 16 29/32" x 15 5/32" 29 7/8" x 16 29/32" x 15 5/32"
(inches)
Net Weight                             STSS: 45.9 lbs                       45.5 lbs                       45.5 lbs
(lb)                                   Plastic: 44.5 lbs             (ME16H702SES: 46.9 lbs)        (ME16H702SES: 46.9 lbs)
Shipping Properties
Shipping Dimensions W x H x D
                              33 3/8" x 19 15/16" x19 13/32" 33 3/8" x 19 13/32" x 20 5/32" 33 3/8" x 19 13/32" x 20 5/32"
(inches)
Loading Q'ty
                                        330 (Jumbo)                         330 (Jumbo)                    330 (Jumbo)
(sets / 40ft)
Shipping Weight                        STSS: 53.4 lbs                       52.3 lbs                       52.3 lbs
(lb)                                   Plastic: 52.0 lbs             (ME16H702SES: 53.8 lbs)        (ME16H702SES: 53.8 lbs)




                                                                8
3. Disassembly and Reassembly

3-1 Tools

      Tool                             Type



   Screw driver    Use for assembly and disassembly of all screws




  7mm Vox Driver   Use for assembly and disassembly of Magnetron




      Nipper                          Nipper




                                                  9
3. Disassembly and Reassembly

MAGNETRON, MOTOR ASSEMBLY, VENT BLOWER AND HIGH VOLTAGE TRANSFORMER
Oven must be removed from wall.
REMOVING OVEN FROM WALL (2 PEOPLE REQUIRED)



                                       Disconnect the power cord from the outlet.

                                       The oven is hooked on the metal tabs of the wall
                                       mounting plate that is secured to the wall. It is not
                                       necessary to remove this mounting plate to service this
                                       unit.
                                       This unit is attached to the cabinet above by two self
                                       aligning screws. Support the unit while removing these
                                       screws allowing it to hinge downward to disengage the
                                       unit from the mounting plate.


                    House Duct




                                       Be aware there may also be a connection to the range
                                       vent ductwork that is attached to the top or back of the
                                       unit through an exhaust adapter/damper.




                                       Remove the oven from the wall




                                      10
3. Disassembly and Reassembly

MAGNETRON, MOTOR ASSEMBLY, VENT BLOWER AND HIGH VOLTAGE TRANSFORMER
Oven must be removed from wall.
REMOVING OVEN FROM WALL (2 PEOPLE REQUIRED)
Oven is hooked on metal tabs at bottom of wall mounting plate and to cabinet by (3) top cabinet bolts.

3-2 Replacement of High Voltage Transformer

          Parts                   Explaination Photo                                 Explaination




                                                                 1.   Disconnect oven power.

                                                                 2.   Remove Grille.
 Grille
                                                                      1) Remove 3 screws
                                                                      2) Slide the Grille to the left, then pull it
                                                                         straght out.




 Panel Outer                                                     3.   Remove Panel Outer.




                                                       11
3. Disassembly and Reassembly

3-2 Replacement of High Voltage Transformer

  Parts            Explaination Photo                          Explaination




                                             4.   Discharge the High voltage capacitor.




High
voltage
capacitor



                                             5.   Disconnect all the leads.




Base
                                                                     6.    Remove Base bottom.
Bottom




HV Trans                                     7.   Take out the HV Trans.




                                        12
3. Disassembly and Reassembly

3-3 Replacement of Magnetron

       Parts                     Explaination Photo                              Explaination



                                                                 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.


Magnetron



                                                                 2.   Remove nuts (4) securing the magnetron
                                                                      to the wave guide.
                                                                 3.   Take out the magnetron very carefully.




NOTE1: When removing the magnetron, make sure that it antenna does not hit any adjacentparts, 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.



        PRECAUTION
  During replacement, be certain R.F. anode gasket is in place around anode stub.
  PERFORM MICROWAVE LEAKAGE TEST




                                                      13
3. Disassembly and Reassembly

3-4 Replacement of Door Assembly
     Parts        Disassembly Photo                             Explaination




                                           1.   Remove the `Cap-Door'.



Removal of
Door Assembly
                                           2.
                                                "A" and Door "C" to remove Door "C". Be careful
                                                when handling Door "C" because it is fragile.Then
                                                remove the door assembly.




                                           3.
Removal of                                      "A" and Door "C" to remove Door "C".
Door C                                            Becareful when handling Door "C" because it is
                                                  fragile.




Removal of Key
                                           4.   Detach the spring and key door from Door.
Door & Spring




                                      14
3. Disassembly and Reassembly

3-4 Replacement of Door Assembly




Removal of                              5.   Remove 2 screws, then handle is detached from
Handle                                       Door "A".




                                        6.   Remove 2 screws securing Door `E'.




Removal of
Door "E"
                                        7.
                                             insert and bend a thin metal plate between Door
                                             "E" and Door "A" until you hear the `tick' sound.
                                               Insertion depth of the thin metal plate should be
                                               0.5mm or less.




      PRECAUTION
  PERFORM MICROWAVE LEAKAGE TEST



                                   15
3. Disassembly and Reassembly

3-5 Replacement of Fuse
 Parts           Explaination Photo                          Explaination



                                           1.   Disconnect power and remove grille.
                                           2.   Replace the fuse.
                                           3.   When 20A fuse blows out by the operation
                                                of interlock monitor switch failure, replace
Fuse                                            the primary interlock switch, secondary
                                                interlock switch, door sensing switch,
                                                interlock monitor switch and power relay.
                                           4.   When the above four switches operate
                                                properly, check if any other part such as the
                                                control circuit board, blower motor or high
                                                voltage transformer is defective.




3-6 Replacement of Drive Motor
 Parts           Explaination Photo                          Explaination



                                           1.   Disconnect power and remove bottom plate
                                                screws(5).
                                           2.   Remove bottom plate and disconnect the
                                                turntable motor drive.
Drive                                      3.   Remove turntable motor screws(1) and pull
Motor                                           the turntable motor out.
                                           4.   When replacing the drive motor, be sure to
                                                remount it in the correct position with the
                                                coupler.
                                           5.   Connect all the leads to the drive motor.




                                      16
3. Disassembly and Reassembly

3-7 Removal of stirrer
 Parts             Explaination Photo                          Explaination




                                             The stirrer is motor driver and located on the
                                             upper side of the cavity. The oven uses a top
                                             feed wave guide.
                                             The stirrer is located in the wave guide and
                                             the motor is located on the wave guide.


Stirrer                                      1.   Disconnect power and open the door.

                                             2.   Remove the clip and turn the stirrer cover
                                                  left.

                                             3.   Remove stirrer cover and the stirrer will
                                                  come with it.




                                        17
3. Disassembly and Reassembly

3-8 Replacement of Control Circuit Board
      Parts          Explaination Photo                            Explaination




                                               1.   Disconnect power and remove grille.

                                               2.   Be sure to ground any static electric charge in
                                                    your body and never touch the control circuit.
Removal of
Control Box
                                               3.   Remove screws(2) securing the control box
Assembly                                            assembly.

                                               4.   Disconnect the connectors from the control
                                                    circuit board.




                                               1.   Pull the lever end of the plastic fastener and
                                                    remove the Flexible Printed Circuit(FPC) of
                                                    membrane panel.
                                               2.   Remove screws (4) securing the control circuit
                                                    board.
Removal of
                                               3.   Lift up the control circuit board from the Ass'y
P.C.B Assembly                                      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.




                                          18
3. Disassembly and Reassembly


When replacing the night light, make sure that you are wearing gloves to avoid injury from the heat of the bulb.
       Parts                       Explaination Photo                                Explaination




                                                                      1.   Unplug the oven or turn off the power
                                                                           at the main power.

                                                                      2.   Remove the bulb cover, and mounting
                                                                           screws.

                                                                      3.   Replace the bulb with a 40 watt
 Cooktop Lamp                                                              appliance bulb.

                                                                      4.   Replace the bulb cover and mounting
                                                                           screws.

                                                                      5.   Turn the power back on at the main
                                                                           power supply.




                                                        19
3. Disassembly and Reassembly

3-10 Replacement of Oven Light
     Parts             Explaination Photo                 Explaination




                                            1.   Remove the Grille

                                            2.   Remove the COVER LAMP by push
Oven Light                                       the hook and put up the lever.

                                            3.   Replace the bulb with a 40 watt
                                                 appliance bulb.




                                       20
4. Troubleshooting


    Parts       Photo        Good   No Good




    Fuse




   T.C.O




 H.V Trans




 Convection




 Fan Motor




 Grill Heater




                        21
4. Troubleshooting

4-2 Error Code Numbering Rule
1.    ERROR CODE NUMBERING RULE is applied to a microwave oven and an oven.(CMO, OTR, Grill, Convection,
      Commercial etc.)
2.    All sensors and devices have their own number. ex) Gas Sensor = 1, Temp. Sensor = 2, ...
3.    Of each device, No.1 and No.2 refer to "Open Error" (not sensed) and "Short Error", respectively.
4.    This numbering rule has been applied to models to have been developed since January, 1, 2005. (But, GE or
      Customize model are excluded.)




                            DEVICE                ERROR CASE
                            0- Others             1- Open
                            1- Gas Sensor         2- Short
                            2- Temp. Sensor
                            3- Weight Sensor
                            4- Easy/PH Sensor
                            5- EEPROM




4-3 Error Code List
Gas Sensor
 Error      Gas Sensor Error
                                                                  Solution                              Page
 Code         Case (E-1X)
     E-11   Open                                                                                      23 Page
                                 Check Sensor part ,connection of sensor housing and PCB's
     E-12   Short                                                                                     24 Page
                                 connector.
     E-13   T1 Max Time Error                                                                         25 Page
            Key Short Error
     -SE-                        Turn off set and restart.                                            26 Page
            (10 seconds)




                                                             22
4. Troubleshooting

4-4 Electrical Malfunction
4-4-1 E-11




                                         Sensor Open Error (E-11)




                                                                                   : Check if the sensor housing
                                                                                     is inserted into the connector
    Connect the sensor.                     Is the sensor disconnected?              of the main PCB.




                                                                                                                      sensor


             Connect the                        Is the sensor wire
                                                                                   : Check if the sensor wire is damaged, if the
             wire properly.                    connected properly?
                                                                                     housing is loose and if the sensor and the
                                                                                     wire are properly connected.




                                                                                                                      housing
                                             Does the voltage change                                                  connector
                 S/W Error
                                            as the humidity, temperature
                                                and weight change?
                                                                                   : Check if the voltage of the GND and sensor
                                                                                     changes using a digital multi-meter
                                                                                     by forcefully changing the humidity, temperature
                                                                                     and weight.
           After Power -> On, does
            the symptom continue?           The sensor is out of order.




              Replace the PCB.
                                                Replace the sensor.




                                     Perform the operation again and check if it
                                                is working properly.




                                                               23
4. Troubleshooting

4-4-2 E-12




                                     Sensor Short Error (E-12)


                                                                         : Check if both terminals of the
                                                                           sensor are slightly shorted.


   Remove the shorted part               Is the sensor shorted?
  of the temperature sensor.
                                                                                                       sensor


                                                                         : Check if the sensor and related
                                                                           parts such as the connector or
       Remove any foreign              Is the sensor terminal part
                                                                           soldering parts are slightly shorted.
       Substance from the                  of the PCB shorted?
          shorted part.


                                                                                                      sensor
                                                                                                      terminal
                                        Does the voltage change
                   S/W Error           as the humidity, temperature
                                              and weight cha             : Check if the voltage of the GND and
                                                                           sensor changes using a digital multi-meter
                                                                           by forcefully changing the humidity,
                                                                           temperature and weight.
            After Power > On, does
            the symptom continue?
                                       The sensor is out of order.
                                                                                                      connector


                Replace the PCB.

                                           Replace the sensor.




                                     Perform the operation again and
                                      check if it is working properly.




                                                        24
4. Troubleshooting

4-4-3 E-13




                                      Sensor Max Time Error (E-13)




        Insert food           YES            Does it heat up without              : Since heating without placing food into
     and heat it again.                       placing food into it?                 the oven may damage the product, take care.


                                                            NO


                              YES
       Place food with                    Does it heat with completely            : Since heating completely dried food
      moisture into it and                         dried food?                      may burn the food, take care.
         heat it again.

                                                            NO


            Remove the an                    Is any foreign substance
                              YES
          foreign substance         on the sensor or is something acting as an    : If the sensor is contaminated by a foreign
              or obstacle.                obstacle in front of the sensor?          substance, it may fail to detect the humidity.


                                                            NO


                                            The sensor is out of order.




                                               Replace the sensor.




                                    Perform the operation again and check if it
                                               is working properly.




                                                            25
4. Troubleshooting

4-4-4 -SE-



                                                   Key Short Error (- SE -)




                               YES                   Is the key not recognized
                                                               at all?


                                                                     NO



                               YES                     Is the key recognized
                                                            intermittently?


                                                                     NO



                               YES                       Is a specific key
                                                         not recognized?


                                                                     NO

             The membrane
               is defective.
                                                             S/W Error




               Replace the
              Control Panel.
                                            NO           After Power > On,
                                                    does the symptom continue?


                                                                    YES

                                                          Replace the PCB.




                                             Perform the operation again and check if it
                                                        is working properly.



                               membrane


                                     Connector




                                                  26
4. Troubleshooting

4-4-5 If oven malfunction



  Oven does not operate.                        *Inspection method



                                           NO        Is Primary interlock   NO
          Is Fuse OK?
                                                     switch normal?




                                                           YES

            YES




                                                                            NO
                                                  Is Power Relay normal?



     Is the magnetron                      NO                               NO
     temperature switch normal?                    Replace switch


                                                                                  Power supply circuit check point
            YES


       Is SMPS power supply                NO      Do check power supply    NO
       cirduit normal?                             circuit

            YES


       Is the IC01 output of               NO      Do check                  NO
       PCB normal?                                 Relay control circuit          Relay control circuit check point




                                                   Is high voltage dioed
            YES
                                                   normal?


                          Checking high            Is high voltage dioed    NO
                          voltagecircuts           normal?

                                                           YES

                                                   Is high voltage          NO
                                                   capacitor normal?

                                                           YES


                                                   Is magnetron normal?     NO




                                                             27
4. Troubleshooting

4-4-6 If button malfunction


  Buttons of the control panel do not work.                 *Inspection method



       Are button pressed                 NO
                                                Refer to User Manual
       in the correct order?


             YES                                Tact type


      Is the connector of the             NO
      control panel normal?


             YES




          Replace PCB.




                                Menbrane type




                                                    28
4. Troubleshooting




 Food is not heated even though an oven works.                *Inspection method




       Is the latch switch         NO
                                        Method to control latch switch
       operating normally?



             YES




  Checking high voltage circuits




                                            29
                                                                                                                                                                                                          30
                                                                                                            Parts
                                                                                                       No.                   Part Name                              Function and Rule
                                                                                                           Number
                                                                                                        1   RY01              Main Relay                            Fan, Lamp, T/T Control
                                                                                                        2   RY02             Inrush Relay                     Inrush Electric Current Decrease
                                                                                                        3   RY03          Power High Relay                     MW Power Control(High Power)
                                                                                                        4   RY04          Power Low Relay                      MW Power Control(Low Power)
                                                                                                        5   RY05             Bright Relay                             Turn on High Light
                                                                                                        6   RY06           Vent High Relay                         Turn on High Ventilation
                                     (This Document can not be used without Samsung's authorization)




                                                                                                        7   RY07           Vent Low Relay                          Turn on Low Ventilation
                                                                                                        8   RY08           Vent Mid Relay                           Turn on Mid Ventilation
                                                                                                        9   RY09              Night Relay                             Turn on Low Light
                                                                                                       10   CN01          Inrush Connector                       A Terminal for Inrush Circuit
                                                                                                                                                    A Terminal for Connecting with Power supply & Relay
                                                                                                       11   CN02      Power & Relay Connector
                                                                                                                                                                    Contact(Load Control)
                                                                                                       12   CN03    Door switch Sensing Connector        A Terminal for Connecting with Door Switch
                                                                                                       13   CN04     Membrane switch Connector        A Terminal for Connecting with Membrane Switch
5. PCB Diagrams

                  5-1 PCB Diagrams
5. PCB Diagrams

5-2 PCB Diagrams
(This Document can not be used without Samsung's authorization)




                                                                  31
6. Wiring Diagrams

6-1 Wiring Diagrams
(This Document can not be used without Samsung's authorization)




                                                                  32
6. Wiring Diagrams

6-1 Wiring Diagrams
(This Document can not be used without Samsung's authorization)




                                                                  33
GSPN (GLOBAL SERVICE PARTNER NETWORK)
Area                        Web Site
Europe, CIS, Mideast & Africa gspn1.samsungcsportal.com
Asia                        gspn2.samsungcsportal.com
North & Latin America       gspn3.samsungcsportal.com
China                       china.samsungportal.com




                                             



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