Maytag AMC5101AAB/W Operating instructions

MICROWAVE OVEN
MODEL : MW1030WE
SERVICE
MICROWAVE OVEN
Manual
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 Diagrplodeams
9. Schematic Diagrams
10. Reference
SELA-P
Contents
1. Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-2 Special Servicing Precautions (Continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-3 Special High Voltage Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2-1 Table of Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3-1 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3-2 Features & External Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3-3 Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Disassembly and Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4-1 Replacement of Magnetron, Motor Assembly and Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4-2 Replacement of High Voltage Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4-3 Replacement of Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4-3-1 Removal of Door “C” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4-3-2 Removal of Door “E” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4-3-3 Removal of Key Door & Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4-3-4 Reassembly Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4-4 Replacement of Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4-5 Replacement of Drive Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4-6 Replacement of Control Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4-6-1 Removal of Control Box Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4-6-2 Removal of Ass’y P.C.B Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4-6-3 Removal of Window Display & Membrane Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5. Alignment and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5-1 High Voltage Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5-2 Low Voltage Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5-3 Magnetron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5-4 High Voltage Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5-5 High Voltage Diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5-6 Main Relay and Power Control Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5-7 Adjustment of Primary Switch, Door Sensing Switch and Monitor Switch . . . . . . . . . . . . . . . . . . . . . . . . . 12
5-8 Output Power of Magnetron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5-9 Microwave Heat Distribution - Heat Evenness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5-10 Procedure for Measurement of Microwave Energy Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5-11 Check for Microwave Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5-12 Note on Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5-13 Leakage Measuring Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6-1 Electrical Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7. Exploded Views and Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7-1 Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7-2 Main Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7-3 Control Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7-4 Standard Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8 P.C.B Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8-1 P.C.B Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8-2 P.C.B Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9. Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9-1 Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10. Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10-1 Model name standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10-2 Customer inquiry cases and countermeasures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
-2-
PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
(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.
1. Precaution
Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use,
repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as potentially
lethal high voltages and currents.
1-1 Safety precautions (
)
1. All repairs should be done in accordance with the
procedures described in this manual. This product
complies with Federal Performance Standard 21
CFR Subchapter J(DHHS).
2. Microwave emission check should be performed to
prior to servicing if the oven is operative.
3. If the oven operates with the door open :
Instruct the user not to operate the oven and contact the manufacturer and the center for devices
and radiological health immediately.
4. Notify the Central Service Center if the
microwave leakage exceeds 5 mW/cm2.
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.
7. When reinstalling the chassis and its assemblies,
be sure to restore all protective devices, including:
nonmetallic control knobs and compartment covers.
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. Always unplug the
unit’s AC power cord from the AC power source
before attempting to remove or reinstall any component or assembly.
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.
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.
9. Inform the manufacturer of any oven found to have
emission 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.
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.
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.
CENTRAL SERVICE CENTER
10. Service technicians should remove their watches
while repairing an MWO.
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.
-1-
1-2 Special Servicing Precautions (Continued)
17. When checking the continuity of the witches or
transformer, always make sure that the power is
OFF, and one of the lead wires is disconnected.
18. Components that are critical for safety are
indicated in the circuit diagram by shading,
or
.
19. Use replacement components that have the same
ratings, especially for flame resistance and
dielectric strength specifications. A replacement part
that does not have the same safety
characteristics as the original might create shock,
fire or other hazards.
1-3 Special High Voltage Precautions
1. High Voltage Warning Do not attempt to measureany of the high voltages--this includes the filament
voltage of the magnetron. High voltage is present
during any cook cycle. Before touching any components or wiring, always unplug the oven and
discharge the high voltage capacitor
(See Figure 1-1)
H. V. Capacitor
2. The high-voltage capacitor remains charged about
30 seconds after disconnection. Short the negative terminal of the high-voltage capacitor to to the
oven chassis. (Use a screwdriver.)
3. High voltage is maintained within specified limits by
close-tolerance, safety-related components and adjustments. If the high voltage exceeds the specified
limits, check each of the special components.
Short
H. V. Diode
Touch chassis ground first then short to the high
voltage capacitor terminal by using screwdriver or
jumper wire.
Fig. 1-1 Discharging High Voltage Capacitor
PRECAUTION
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.
Never touch any circuit wiring with your hand nor
with uninsulated tool during operation.
PRECAUTION
Servicemen should remove their watches whenever working close to or replacing the magnetron.
-2-
2. Specifications
2-1 Table of Specifications
TIMER
99 SECOND
POWER SOURCE
120V 60Hz, AC
POWER CONSUMPTION
MICROWAVE : 1,500W
OUTPUT POWER
1000W(10LEVEL POWER)
OPERATING FREQUENCY
2,450MHz
MAGNETRON
OM75P(31)ESS
COOLING METHOD
COOLING FAN MOTOR
OUTSIDE DIMENSIONS(mm)
517(W) x 297(H) x 379(D)
SHIPPING WEIGHT
NET
GROSS
13.65kg
15.56kg
-3-
3. Operating Instructions
3-1 Control Panel
1
2
3
4
5
10
6
11
7
8
12
9
1. One Minute +
2. Sensor Cook Buttons
3. Auto Defrost
4. Auto Cook Menus
5. Power Level
6. Kitchen Timer
-4-
7. Clock
8. Sound
9. Pause/Cancel
10. Number Bottons
11. More/Less
12. Start
3-2 Features & External Views
Door
Light
Ventilation Holes
Safety Interlock Holes
Control Panel
Door Latches
Open Door Push
Guide Roller
297mm
Glass Tray
517mm
379mm
-5-
3-3 Accessory
Depending on the model that you have purchased, you are supplied with several accessories that can be used
in a variety of ways.
1. Coupler, already placed over the motor shaft in the base of the oven.
Purpose : The coupler rotates the turntable.
2. Guide Roller, to be placed in the centre of the oven.
Purpose : The roller ring supports the turntable.
3. Glass Tray, to be placed on the roller ring with the centre fitting to the coupler.
Purpose : The turntable serves as the main cooking surface; it can be easily re
moved for cleaning.
DO NOT operate the microwave oven without the roller ring and turntable.
-6-
4. Disassembly and Reassembly
4-1 Replacement of Magnetron, Motor Assembly and Lamp
Remove the magnetron including the shield case, permanent magnet, choke coils and capacitors
(all of which are contained in one assembly).
1. Disconnect all lead wires from the magnetron and lamp.
2. Remove a screw securing air cover.
3. Remove the air cover.
4. Remove screws securing the magnetron to the wave guide.
5. Take out the magnetron very carefully.
6. Remove nuts from the back panel.
7. Take out the fan motor.
8. Remove the oven lamp by rotating to pull out from hole of air cover.
NOTE1: When removing the magnetron, make sure that its antenna does not hit any adjacent parts, or it may
be damaged.
NOTE2: When replacing the magnetron, be sure to remount the magnetron gasket in the correct position and
make sure the gasket is in good condition.
4-2 Replacement of High Voltage Transformer
1. Discharge the high voltage capacitor.
2. Disconnect all the leads.
3. Remove the mounting bolts.
4. Reconnect the leads correctly and firmly.
PRECAUTION
Servicemen should remove 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.
-7-
4-3 Replacement of Door Assembly
4-3-1 Removal of Door “C”
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.
Then remove the door assembly.
Door "A"
Door "C"
4-3-2 Removal of Door “E”
Door "E"
Following the procedure as shown in the figure,
insert and bend a thin metal plate between Door
“E” and Door “A” until you hear the ‘tick’ sound.
1. Insertion depth of the thin metal plate should be
0.5mm or less.
4-3-3 Removal of Key Door & Spring
Remove pin hinge from Door “E”
Detach spring from Door “E” and key door.
-8-
4-3-4 Reassembly Test
After replacement of the defective component parts of the door, reassemble it and follow the instructions
below for proper installation and adjustment so as to prevent an excessive microwave leakage.
1. When mounting the door to the oven, be sure to adjust the door parallel to the bottom line of the oven face
plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment.
2. Adjust so that the door has no play between the inner door surface and oven front surface. If the door assembly is not mounted properly, microwave energy may leak from the space between the door and oven.
3. Do the microwave leakage test.
4-4 Replacement of Fuse
1. Disconnect the oven from the power source.
2. When 20A fuse blows out by the operation of interlock monitor switch failure, replace the primary interlock
switch, door sensing switch, monitor switch and power relay.
3. When the above three switches operate properly, check if any other part such as the control circuit board,
blower motor or high voltage transformer is defective.
4-5 Replacement of Drive Motor
1. Take out the glass tray, guide roller from oven cavity, disconnect power..
2. Remove turn table motor cover from case bottom
CAUTION : Remove sharp edge after cover removal.
3. Disconnect leads from motor..
4. Remove the screws securing motor to bottom of over
cavity and lift out the motor.
5. When replacing the motor, be sure to remount it in the
correct position.
NOTE : The shaft of motor should fit tip coupler.
Drive Motor Cover
6. Screw the motor to bottom of oven cavity.
7. Connect leads to the drive motor.
8. Screw the drive motor cover to the base plate
with a screw driver.
NOTE : Bring the spare screw from service center.
COVER FIXING SCREW :
MACHINE SCREW(6006-001170)
-9-
Drive Motor
Base Plate
4-6 Replacement of Control Circuit Board
4-6-1 Removal of Control Box Assembly
1. Disconnect the connectors from the control box
assembly.
2. Remove screws securing the control box assembly.
3. Remove the knobs of the control box A’ssy.
SCREW
4. Remove the screw securing the timer.
CONTROL-BOX
4-6-2 Removal of Ass’y P.C.B Assembly
1. Remove screws securing the control circuit
board
Screw
2. Lift up the control circuit board from the Ass’y
control box.
4-6-3 Removal of Window Display & Membrane Panel
1. Window display should not be disassembled as its
mounting tabs will be broken. If repair work is
difficult, replace with Ass’y control panel.
2. The membrane key board is attached to the
escutcheon base with double faced 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.
- 10 -
Membrane
Panel
5. Alignment and Adjustments
PRECAUTION
1. High voltage is present at the high voltage terminals during any cook cycle.
2. It is neither necessary nor advisable to attempt measurement of the high voltage.
3. Before touching any oven components or wiring, always unplug the oven from its power source and
discharge the high voltage capacitor.
5-1 High Voltage Transformer
1. Remove connectors from the transformer terminals
and check continuity.
2. Normal resistance readings are as follows:
Secondary
Approx. 142Ω
Filament
Approx. 0Ω
Primary
Approx. 1.7Ω
Filament Terminals
Secondary
Terminal
(Room temperature = 20°C)
Primary
Terminals
5-2 Low Voltage Transformer
1. The low voltage transformer is located on the
control circuit board.
2. Remove the low voltage transformer from the
PCB Ass’y and check continuity.
3. Normal resistor reading is shown in the table.
Terminals
5-3 Magnetron
1. Continuity checks can indicate only an open
filament or a shorted magnetron. To diagnose an
open filament or shorted magnetron :
2. Isolate the magnetron from the circuit by
disconnecting its leads.
3. A continuity check across the magnetron filament
terminals should indicate one ohm or less.
4. A continuity check between each filament terminal
and magnetron case should read open.
Resistance
SLV-4290U
1~2(Input)
379Ω
3~4(Output7V)
10.23Ω
5~6(Output17V)
31.91Ω
Magnetron Antenna
Gasket Plate
Cooling Fins
- 11 -
5-4 High Voltage Capacitor
1. Check continuity of the capacitor with the meter set at the highest resistance scale.
2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 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.
5-5 High Voltage Diode
1. Isolate the diode from the circuit by disconnecting its leads.
2. With the ohm-meter set at the highest resistance scale, measure across the diode terminals. Reverse the
meter leads and read the resistance. A meter with 6V, 9V or higher voltage batteries should be used to check
the front-to back resistance of the diode (otherwise an infinite resistance may be read in both directions). The
resistance of a normal diode will be infinite in one direction and several hundred KΩ in the other direction.
5-6 Main Relay and Power Control Relay
1. The relays are located on the PCB Ass’y. Isolate them from the main circuit by disconnecting the leads.
2. Operate the microwave oven with a water load in the oven. Set the power level set to high.
3. Check continuity between terminals of the relays after the start pad is pressed.
5-7 Adjustment of Primary Switch, Door Sensing Switch and Monitor Switch
PRECAUTION
For continued protection against radiation hazard, replace parts in accordance with the wiring diagram and be sure
to use the correct part number for the following switches: Primary and secondary interlock switches, and the interlock monitor switch (replace all together). Then follow the adjustment procedures below. After repair and adjustment, be sure to check the continuity of all interlock switches and the interlock monitor switch.
1. When mounting Primary switch and Interlock Monitor switch to Latch Body, consult the figure.
2. No specific adjustment during installation of Primary switch and Monitor switch to the latch body is
necessary.
3. When mounting the Latch Body to the oven assembly, adjust the Latch Body by moving it so that the
oven door will not have any play in it. Check for play
in the door by pulling the door assembly. Make sure
that the latch keys move smoothly after adjustment
is completed. Completely tighten the screws holding
the Latch Body to the oven assembly.
4. Reconnect to Monitor switch and check the continuity of the monitor circuit and all latch switches again
by following the components test procedures.
5. Confirm that the gap between the switch housing
and the switch actuator is no more than 0.5mm
when door is closed.
6. Interlock Switch Replacement - When replacing
faulty switches, be sure switch mounting tabs are
not bent, broken or otherwise deficient in their ability to secure the switches in place.
- 12 -
Primary
Interlock Switch
Body Latch
Interlock Monitor
Switch
Door Sensing
Switch
Lever Switch
(Secondary
Interlock S/W)
Primary Interlock S/W
Monitor switch (COM-NC)
Door Sensing S/W
(Secondary Interlock S/W)
Door Open
Door Closed
∞
0
∞
0
∞
0
5-8 Output Power of Magnetron
CAUTION
MICROWAVE RADIATION
PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY.
The output power of the magnetron can be measured by performing a water temperature rise test.
Equipment needed :
* Two 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm)
* One glass thermometer with mercury column
NOTE: Check line voltage under load. Low voltage will lower the magnetron output. Make all temperature
and time tests with accurate equipment.
1. Fill the one liter glass vessel with water.
2. Stir water in glass vessel with thermometer, and record glass vessel’s temperature (“T1”, 10±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 44seconds exactly.
(3 seconds included as a holding time of magnetron oscillation:)
4. When heating is finished, stir the water again with the thermometer and measure the temperature (“T2”).
5. Subtract T1 from T2. This will give you the water temperature rise. (∆T)
6. The output power is obtained by the following formula;
Output Power =
4.187 x 1000 x ∆T+0.55xMcx(T2 -T1)
41
44 : Heating Time (sec)
41 : Counting Time (sec)
4.187 : Coefficient for Water
1000 : Water (cc)
∆T : Temperature Rise (T2-T1)
Yo : Room Temperature
Mc : Cylindrical borosilicate glass weight
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 91
times the of centigrade temperature.
5-9 Microwave Heat Distribution - Heat Evenness
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:
D
Heat Distribution =
Minimum
Temperature Rise
Maximum
Temperature Rise
D
Beaker
X 100(%)
D/4
D/4
The result should exceed 65%.
- 13 -
D/4
D/4
Cooking Tray
5-10 Procedure for Measurement of Microwave Energy Leakage
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.
Maximum allowable leakage is 5mW/cm2 .
4mW/cm2 is used to allow for measurement and meter accuracy
5-11 Check for Microwave Leakage
1. Remove the outer panel.
2. Pour275±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 near 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 reading should be less than 4mW/cm2.
5-12 Note on Measurement
1. Do not exceed the limited scale.
2. The test probe must be held on the grip of the handle, otherwise a false reading may result when the operator’s hand is between the handle and the probe.
3. When high leakage is suspected, do not move the probe horizontally along the oven surface; this may cause
damage to the probe.
4. Follow the recommendation of the manufacturer of the microwave energy survey meter.
5-13 Leakage Measuring Procedure
5-13-1 Record keeping and notification after measurement
1. After adjustment and repair of a radiation preventing device, make a repair record for the measured values,
and keep the data.
2. If the radiation leakage is more than 4mW/cm2 after determining that all parts are in good condition, functioning properly and the identical parts are replaced as listed in this manual notify 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.
- 14 -
6. Troubleshooting
PRECAUTION
1. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE.
2. BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT.
3. DISCHARGE THE HIGH VOLTAGE CAPACITOR.
4. WHEN CHECKING THE CONTINUITY OF THE SWITCHES OR TRANSFORMER, DISCONNECT
ONE LEAD WIRE FROM THESE PARTS AND THEN CHECK CONTINUITY WITHOUT THE
POWER SOURCE ON. TO DO OTHERWISE MAY RESULT IN A FALSE READING OR DAMAGE
TO YOUR METER.
5. DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE
STATIC DISCHARGE MAY DAMAGE IT.
ALWAYS TOUCH GROUND WHILE WORKING ON IT TO DISCHARGE ANY STATIC CHARGE
BUILT UP..
6-1 Electrical Malfunction
SYMPTOMS
CAUSE
CORRECTIONS
Oven is dead.
Fuse is OK.
No display and no operation
at all..
1. Open or loose lead wire harness
2. Open thermal cutout (Magnetron)
3. Open low voltage transformer
4. Defective Ass’y PCB
Check fan motor when thermal cutout is defective.
Check Ass’y PCB when L.V.T is
defective.
No display and no operation
at all. Fuse is blown.
1. Shorted lead wire harness
2. Defective primary latch switch
(NOTE 1)
3. Defective monitor switch (NOTE1)
4. Shorted H.V.Capacitor
5. Shorted H.V.Transformer (NOTE2)
Check adjustment of primary,
interlock montor, power relay, door
sensing switch.
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 H.V.Transformer is replaced, check diode and
magnetron also.
Oven does not accept
key input (Program).
1. Key input is not in-Sequence
2. Open or loose connection of
membrane key pad to Ass’y PCB
3. Shorted or open membrane panel
4. Defective Ass’y PCB.
Refer to operation procedure.
Timer starts countdown but
no microwave oscillation.
(No heat while oven lamp
and fan motor turn on.)
1. Off-alignment of latch switches
2. Open or loose connection of high
voltage circuit especially magnetron
filament circuit
NOTE: Large contact resistance will
bring lower magnetron filament voltage and cause magnetron to lower
output and/or intermittent oscillation.
3. Defective high voltage components
H.V.Transformer H.V.Capacitor
H.V.Diode, Magnetron
4. Open or loose wiring of power relay
5. Defective primary latch switch
6. Defective power relay or Ass’y PCB
Replace the motor.
Replace the timer.
- 15 -
Replace PCB main.
6-1 Electrical Malfunction(continued)
SYMPTOMS
CAUSE
CORRECTIONS
Oven lamp and fan motor turn 1. Misadjustment or loose wiring
of primary latch switch
on.
2. Defective primary latch switch
Adjust door and latch switches.
Oven can program but timer
does not start.
1. Open or loose wiring of
secondary interlock switch
2. Off-alignment of primary
interlock
3. Defective secondary interlock
S/W
Adjust door and interlock switches.
Microwave output is low;.
Oven takes longer time to
cook food.
1. Decrease in power source
voltage.
2. Open or loose wiring of
magnetron filament circuit.
(Intermittent oscillation))
3. Aging of magnetron
Consult electrician.
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 to the plugged in mode
Defective Ass’y PCB
Replace PCB main.
Loud buzzing noise can be
heard.
1. Loose fan and fan motor
2. Loose screws on
H.V.Transformer
3. Shorted H.V.Diode
Tighten screws of fan motor.
Tighten screws of H.V.Transformer.
Replace H.V.Diode
Turntable motor does not
rotate.
1. Open or loose wiring of
turntable motor.
2. Defective turntable motor.
Replace turntable motor.
Oven stops operation during
cooking
1. Open or loose wiring of primary
interlock switch
2. Operation of thermal
cutout(Magnetron)
Adjust door and latch switches.
Sparks
1. Metallic ware or cooking dishes
touching on the oven wall.
2. Ceramic ware trimmed with
gold or silver powder also
causes sparks.
Inform the customer.
Do not use any type of cookware with
metallic trimming.
Uneven cooking
Uneven intensity of microwave
due to
its characteristics.
Wrap thinner parts of the food with aluminum foil.
Use plastic wrap or cover with a lid.
Stir once or twice while cooking foods
such as soup, cocoa, or milk.
Noise from the turntable motor when it starts to operate.
Noise may result from the motor.
Replace turntable motor.
- 16 -
7. Exploded Views and Parts List
7-1 Exploded Views
D005
D004
M001
D003
D002
D006
M019
M093
M015
M029
M022
H018
D007
M020
M023
D011
W002
D049
M036
M099
M051
B018
B004
M049
M035
B006
B001
M038
M048
B009
C082
B002
M039
C009
C005
C003
C070
M040
M041
M047
C006
C004
M037
T001
T017
C007
M034
- 17 -
7-2 Main Parts List
(S.N.A : SERVICE NOT AVAILABLE)
Level
No.
Code No.
Q’ty
SA/SNA
1-1
M041
0402-001554
HVDIODE-RECTIFIER
1-1
M039
2501-001016
C-OIL
HV03-12T01,12000V,0.4A
1
SA
950nF,2.1KV,BK,35x54x80,20mm
1
SA
1-1
M019
3601-001198
1-1
M036
DE07-00006A
FUSE-CARTRIDGE
250V,20A,SLOW-BLOW,CERAMI
1
SA
LAMP-INCANDESCENT
-,125V,-,25W,ORG,TERMI
1
1-1
M038
DE26-00097A
SA
TRANS H.V
SHV-UT10KA,120V,60HZ,2250V,3.2
1
SA
1-1
M049
1-1
M015
DE31-10154A
MOTOR SYNCHRONOUS
M2HJ49ZR02,ST-16,50/60
1
SA
DE39-20146E
ASSY POWER CORD
MSP-36,-,-,-,-,-,SPT-2 3
1
SA
1-1
M029
DE47-20032B
THERMOSTAT
PW2N,-,-,30,0,85/75,-,-,-,187
1
SA
1-1
1-1
M093
DE47-40025A
FUSE-HOLDER
KFSN-L-16,15A,NYLON#66,5G,-,
1
SA
M048
DE61-00557A
BASE-PLATE
5TH-1.0,SGCC,T0.6,W565,L345,-
1
SA
1-1
M047
DE61-40066A
FOOT
-,PP,-,BLK,-,-,-
1
SA
1-1
M040
DE61-50106A
BRACKET-HVC
-,SECC,T0.8,W31,L125.8,-,-
1
SNA
1-1
M037
DE63-00208A
COVER-AIR
5TH-1.0,PP,-,-,-,-,-,-,-
1
SA
1-1
M051
DE63-00209A
COVER-MGT
5TH-1.0,PP,T2.0,-,-,-,-,-,-
1
SA
1-1
M099
DE66-90113A
LEVER-DOOR
PP(TB53-GH41),T2.5,-,-,12g,NT
1
SA
1-1
M034
DE67-00182A
COUPLER
5TH-1.0,PPS,-,-,-,-
1
SA
1-1
M001
DE70-00011V
PANEL-OUTER
C/STELT0.6W380.3L1085.2NC-2K
1
SA
1-1
T001
DE74-20015G
TRAY-COOKING
-,T6,3RD 10
1
SA
1-1
B018
DE96-00115A
ASSY BODY LATCH
MW850WA NC2000 BUTTON
1
SA
1-2
B002
3405-001033
SWITCH-MICRO
125/250VAC 16A,200GF,SPSTNC
1
SA
1-2
B001
3405-001034
SWITCH-MICRO
125/250VAC,16A,200GF,SPST-N
1
SA
1-2
B004
3405-001042
SWITCH-MICRO
DC 24V,0.3A,150gf,-
1
SA
1-2
B009
DE66-00088B
LEVER SWITCH
-,POM,-,-,-,-,-,-
1
SA
1-2
B006
DE72-00138A
BODY-LATCH
PP WHT NC2000 0.6/0.8/1.2
1
SA
1-1
M020
DE96-00305A
ASSY-MOTOR FAN
SMF-5THUA,120V60HZ,2450,5
1
SA
1-2
M023
DE31-10185B
MOTOR-FAN
SMF-3RDUA1,120V60Hz,-,-,2300rp
1
SA
1-2
H018
DE31-90057A
BLADE-FAN
PP,T1.5,-,3RD-W,-,-,-
1
SA
1-2
M022
DE63-00210A
COVER-BLOWER
5TH-1.0,PP,T1.5,-,-,-,-,-,-
1
SA
1-1
W002
DE96-00381A
ASSY-WIRE HARNESS A
AMC5101,120V/60HZ
1
SA
ASSY-GUIDE ROLLER
NC1.2 SPS(C832)D16.0,B
1
SA
ASSY-MGT
OM75P(31)ESNL
1
SA
1-1
T017
DE97-00222A
1-1
M035
OM75P(31)ESNL
Description
Specification
- 18 -
Remark
CVT TOP
(NEAR MGT)
CVT INSIDE
RIGHT
7-3 Control Parts List
(S.N.A : SERVICE NOT AVAILABLE)
Level
No.
Code No.
Description
1-1
D049
DE94-00080Z
ASSY DOOR
1-2
D005
DE01-00118A
FILM-DOOR
1-2
D007
DE61-70128A
SPRING-KEY
Specification
Q’ty
SA/SNA
MW1030WC/XAA,PURE-WHT,120V/60H
1
SA
MW5896W,-,-,L185,T0.15,W304,-,
1
SA
BLUING,HSW3,PI0.6,PI0.6,D5,D5
1
SA
1-2
D011
DE64-40006F
DOOR-KEY
POM(F20-02),-,-,12G,BLK,MW7897G
1
SA
1-2
D006
DE64-40012A
DOOR-C
-,RESIN-PP(TB53),BLACK,-,-,-,CE94
1
SA
1-2
D002
DE64-40317M
DOOR-A
MW1030WA,ABS(GENERAL)WHT,T2.0
NC1
1
SA
1-2
D003
DE67-20197D
SCREEN-DOOR
MW1030WC,PET,T0.25,W210.4,L3
1
SA
1-2
D004
DE94-00910A
ASSY DOOR-E(COATING)
MW1030WC/XAA,BLK,5T
1
SA
1-1
C082
DE94-01247C
ASSY CONTROL-BOX
120V60HZ,MW1030WE/XAP,W
1
SA
1-2
C004
DE34-00190Y
SWITCH MEMBRANE
MW1030WE/XAO,-,-,PET,-,1
1
SA
1-2
C070
DE61-00665A
HOLDER-LED
ALL-0.8,PP,-,-,-,BLACK,LED-BA
1
SA
1-2
C006
DE61-70076A
SPRING-BUTTON
-,HSWR,PI0.6,PI0.6,-,-,-,-
1
SA
1-2
C007
DE66-20275A
BUTTON-PUSH
3RD-W S1 MW5592W,-,-,-,-,9g
1
SA
1-2
C009
DE67-40179A
WINDOW-DISPLAY
SAN,T2.0,-,-,SMOG,-,3RD-W
1
SA
1-2
C005
DE72-70202A
CONTROL PANEL
MWA19AW,ABS,-,-,-,140g,WHT
1
SA
1-2
C003
RAS-D2LED3-00
ASSY PCB PARTS
AMC5080AAW,120V60HZ
1
SA
- 19 -
Remark
7-4 Standard Parts List
(S.N.A : SERVICE NOT AVAILABLE)
Level
Code No.
Description
1-1
6002-001320
SCREW-TAPPING
1-1
6006-001170
SCREW-TAPPING
1-1
6006-001170
1-1
6006-001176
1-1
1-1
Specification
Q’ty
SA/SNA
Remark
TH,+,2S,M4,L8,PASS,STS304,-
1
SNA
PANEL OUTER RIGHT
TH,+,WT,TC,M4,L10,ZPC(YEL),SWRCH18A,-
1
SNA
MEM EARTH
SCREW-TAPPING
TH,+,WT,TC,M4,L10,ZPC(YEL),SWRCH18A,-
1
SNA
P.CORD EARTH
SCREW-TAPTITE
WT,PH,+,M4,L8,ZPC(YEL)
1
SNA
BKT HVC & DIODE
DE60-10051A
SCREW-TAPPING
-,-,MSWR,-,PH,M4,-,L6,-,-
1
SA
DRIVE MOTOR
DE60-10080A
SCREW-TAPPING
-,-,-,-,M5,L12,-,2S,-,-
4
SA
HVT
1-1
DE60-10080A
SCREW-TAPPING
-,-,-,-,M5,L12,-,2S,-,-
2
SA
MGT
1-1
DE60-10082I
SCREW-A
-,-,-,-,2S-4X12,FEFZY,-,-,-,-
3
SA
BASE PLATE
1-1
DE60-10082I
SCREW-A
-,-,-,-,2S-4X12,FEFZY,-,-,-,-
2
SA
BODY LATCH
1-1
DE60-10082I
SCREW-A
-,-,-,-,2S-4X12,FEFZY,-,-,-,-
1
SA
C.BOX
1-1
DE60-10082I
SCREW-A
-,-,-,-,2S-4X12,FEFZY,-,-,-,-
1
SA
COVER AIR
1-1
DE60-10082I
SCREW-A
-,-,-,-,2S-4X12,FEFZY,-,-,-,-
2
SA
FAN MOTOR
1-1
DE60-10082I
SCREW-A
-,-,-,-,2S-4X12,FEFZY,-,-,-,-
4
SA
PANEL OUTER
1-2
6002-000630
SCREW-TAPPING
PH,+,-,2S,M3,L8,ZPC(YEL),SWRCH18A,-
3
SNA
HOLDER-PCB
1-2
6002-000630
SCREW-TAPPING
PH,+,-,2S,M3,L8,ZPC(YEL),SWRCH18A,-
2
SNA
PCB
1-2
DE60-10193A
SCREW-TAPPING
-,YEL,MSWR18,FEFZY,TH,M4,-,L2
2
SA
- 20 -
8 P.C.B Diagrams
(This Document can not be used without Samsung’s authorization)
8-1 P.C.B Diagrams
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8-2 P.C.B Parts List
(S.N.A : SERVICE NOT AVAILABLE)
Level
Code No.
1-2
RAS-D2LED3-00
1-3
3501-000264
1-3
3501-001154
1-3
3708-001551
1-3
3711-000940
1-3
3711-004143
1-3
DE07-00074K
1-3
1-3
1-3
DE92-01538A
1-4
1203-001037
1-4
Description
Q’ty
SA/SNA
AMC5080AAW,120V60HZ
1
SA
RELAY-POWER
12VDC,-,16000MA,-,9MS,5MS
1
SA
RY03
RELAY-MINIATURE
12VDC,200MW,3000MA,1FORM
1
SNA
RY01
CONNECTOR-FPC/FC/PIC
14P,1.25mm,STRAIGHT
1
SNA
CN03
CONNECTOR-HEADER
BOX,4P,1R,2.5mm,STRAIGH
1
SNA
CN02
CONNECTOR-HEADER
BOX,2P,1R,5mm/2.5mm,
1
SNA
CN01
LED DISPLAY
CSE-4046G-10,2&3,LED1-10,40
1
SNA
DSP1
DE26-00110A
TRANS L.V
SLV-D2LEDU,120V,60HZ,13V,0.18A
1
SNA
LVT1
DE30-20016A
BUZZER
CBE2220BA,STICK,-,-,-,-,-,-,-
1
SNA
BZ01
ASSY PCB AUTO
-,-,RAS-D2LED3-00,120V60HZ
1
SNA
IC-VOLTAGE REGULATOR
78L05,SOT-89,3P,185
1
SNA
IC02
2203-000192
C-CERAMIC,CHIP
100nF,+80-20%,50V,Y5V,TP,
6
SNA
C16
1-4
DE09-00424A
IC MICOM
TMP87CH47U-5HR0,AMC5101AAB,44PI
1
SNA
IC01
1-4
2203-000444
C-CER,CHIP
1nF,10%,50V,X7R,TP,2012,-
2
SNA
C13
1-4
DE92-01650A
ASSY PCB-IMT
-,RAS-D2LED3-00,-,-,120V60H
1
SNA
1-5
0401-001002
DIODE-SWITCHING
1N4148M,100V,200mA,DO-34
13
SNA
D15
1-5
0402-001103
DIODE-RECTIFIER
1T4,400V,1A,TS-1,TP
3
SNA
D19
1-5
0504-001044
TR-DIGITAL
KRA226M,PNP,400MW,2.2K/10K,TO
6
SNA
TR12
1-5
0504-001178
TR-DIGITAL
KRC246M,NPN,400MW,2.2K/10KOHM
5
SNA
TR07
1-5
1405-000001
VARISTOR
470V,1250A,14x7.5mm,TP
1
SA
ZNR1
1-5
2001-000273
R-CARBON
100KOHM,5%,1/8W,AA,TP,1.8X3.2MM
1
SNA
R15
1-5
2001-000290
R-CARBON
10KOHM,5%,1/8W,AA,TP,1.8X3.2MM
2
SNA
R22
1-5
2001-000429
R-CARBON
1KOHM,5%,1/8W,AA,TP,1.8X3.2MM
1
SNA
R07
1-5
2001-000577
R-CARBON
2KOHM,5%,1/8W,AA,TP,1.8X3.2MM
3
SNA
R06
1-5
2001-000734
R-CARBON
4.7KOHM,5%,1/8W,AA,TP,1.8X3.2MM
2
SNA
R02
1-5
2001-000786
R-CARBON
47KOHM,5%,1/8W,AA,TP,1.8X3.2MM
3
SNA
R12
1-5
2202-000252
C-CERAMIC,MLC-AXIAL
4.7nF,10%,50V,X7R,TP
1
SNA
C10
1-5
2401-000151
C-AL
1000uF,20%,25V,GP,TP,10x20,5
1
SNA
C01
1-5
2401-000911
C-AL
22uF,20%,16V,GP,TP,5x7,5
1
SNA
C03
1-5
2401-002075
C-AL
4.7uF,20%,50V,GP,TP,5x11,5
1
SNA
C11
1-5
2401-003107
C-AL
47uF,20%,16V,GP,TP,5x7,5
1
SNA
C02
ASSY PCB PARTS
Specification
Remark
1-5
2802-000188
RESONATOR-CERAMIC
8MHz,0.5%,TP,10.0x5.0x
1
SNA
XTL1
1-5
DE13-20009A
IC
KA7533,DIP,-,-,-,-,-
1
SNA
IC03
1-5
DE39-60001A
WIRE-SO COPPER
PI0.5,SN,T,52MM,TAPING_WI
3
SNA
OJ01
1-5
DE41-00300A
PCB-MAIN
D2LED3,FR-1,1,-,T1.6,301*252MM,
1
SNA
1-4
2007-000941
R-CHIP
47Kohm,5%,1/8W,TP,2012
2
SNA
R09
1-4
2007-000033
R-CHIP
0OHM,5%,1/8W,DA,TP,3216
1
SNA
OJ03
- 22 -
9. Schematic Diagrams
9-1 Schematic Diagrams ( This Document can not be used without Samsung’s authorization. )
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PRIMARY S/W
BLK
BLU
L.V.TRANS
VARISTOR
LAMP
FAN
MOTOR
YEL
YEL
H.V.DIODE
21V
FM
0V
ORG
COM
NC
DM
YEL
MAIN
RELAY
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120V
BLU
120V
125V
40W
H. V. TRANSFORMER
BLK
BLK
YEL
120V20A
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NO
H. V. CAPACITOR
MONITOR
SWITCH
D/MOTOR
RED
PCB
PATTERN
MGT CVT
TCO
0V
WHT
FA
F
MAGNETRON
WHT
POWER RELAY (SECONDARY INTERLOCK)
DOOR
SENSING S/W
CONDITION
DOOR IS OPENED
ORG
ORG
GRN
ASSY PCB BOARD
MAGNETRON
BLK BLU
HIGH VOLTAGE
DIODE
BLK
ORG
TO CHASSIS
BLK
SECONDARY SWITCH
TOP
FA
F
RED
RED
ORG
HIGH VOLTAGE CAPACITOR
BLU BLU
RED
WHT
DOOR SENSING SWITCH
BOTTOM
MONITOR SWITCH
CENTER
BLK
HIGH VOLTAGE
TRANSFORMER
WHT
RED WHT
POWER RELAY
- 23 -
RED
RED
SYMBOL
COLOR
ORG
WHT
BLK
BLU
RED
ORANGE
WHITE
BLACK
BLUE
RED
10. Reference
10-1 Model name standard
Baoad
Classification
USA CMO
USA RV
Distinguisher
M
R
USA Junior
SJ
USA OTR
SM
EUROPE Epoxy Cavity
M
Middle
Classfication
Distinguisher
Product
Code
Full Nane
CMO (Countertop MWO)
W
MW
USA CMO(EPOXY CAVITY)
UTC (Under The
Cabinet)
U
MU
USA UTC
Browner, Grill
G
MG
USA GRILL
Convection
C
MC
USA CONVECTION
Sensor
S
MS
USA CMO SENSOR
DC MWO
D
MD
USA DC MWO
Hospital MWO
H
MH
USA Hospital MWO
Ceramic Enamel
E
ME
USA CMO(CERAMIC ENAMEL)
SOLO
M
RM
USA RV SOLO
CONVECTION
C
RC
USA RV CONVECTION
BUILT-IN
B
RB
USA RV BUILT-IN
SJ
USA Junior MWO
SOLO
H
SMH
USA OTR SOLO
CONVECTION
V
SMV
USA OTR CONVECTION
SOLO
1
M1
EUROPE SOLO(EPOXY
CAVITY)
GRILL
2
M2
EUROPE GRILL(EPOXY CAVITY)
SOLO
1
CE1
EUROPE SOLO(CERAMIC ENAMEL)
GRILL
2
CE2
EUROPE GRILL(CERAMIC ENAMEL)
EUROPE Ceramic Enamel
CE
EUROPE
Quartz GRILL
G2
G2
EUROPE Quartz GRILL
EUROPE
Power Grill
PG
PG
POWER GRILL
EUROPE Convection
CK
CK
EUROPE CONVECTION
C
C
EUROPE CONVECTION
EUROPE Fully
Built-In
F
SOLO
W
FW
EUROPE SOLO FULLY BUILT-IN
GRILL
G
FG
EUROPE GRILL FULLY BUILT-IN
CONVECTION
C
FC
EUROPE CONVECTION
FULLY BUILT-IN
- 24 -
10-2 Customer inquiry cases and countermeasures
Symptom
Cause
Countermeasures
Air is evacuated from
the oven.
• The vent of the oven is
designed to be placed
on the bottom of the
product, and air is evacuated from the oven.
In the past, the vent was placed on the back panel of
the oven. Since the oven was placed near the wall of a
kitchen, the wall behind the oven was discolored. Thus,
the vent of a new oven is placed on the bottom of the
product, and air is evacuated from the oven.
The oven works automatically whenever
the power is turned
on.
• It may happen due to
power failure or abnormal voltage.
• It may happen when
the door does not close
completely.
• Connect the power plug three seconds after disconnecting the power plug.
• Close the door completely => Press the Cancel button
=> Press the Start button.
Heating
• In many cases, it may
happen when the power
level is incorrectly set.
• It may happen when
the door does not close
completely.
• It may happen when the
oven is out of order.
• Select HIGH by rotating the Cooking Power Control
knob.
- KEEP WARM: This function is used to warm the
cooked food for a certain time period, not to heat the
food.
- MEDIUM/LOW: This function is used to cook the food
slowly.
• Close the door completely. => Press the Cancel button. => Press the Start button.
• Contact the nearest Samsung after-sales service center.
Ground
• Ground problem may
happen when the oven
is placed in a humid
area and the over is not
grounded.
• Ground is not provided
by an extended electric
outlet.
• If the oven is placed in a humid area, buy an electric
wire in a store selling electrical products. (Electric
wires for home use are also allowed) Ground the oven
through the electric wire.
• Buy an electric wire in a store selling electrical products. (Electric wires for home use are also allowed)
Ground the oven through the electric wire.
Turn table occasionally rotates in reverse
order.
• Turntable has been designed to rotate in either
direction since 1994.
• In the past, the gear of the turntable was easily worn
by turning it during cleaning. Now, the turntable of the
oven is designed to rotate in both directions to prevent
damage during cleaning. (Rotation direction is set
when the oven initially operates.)
The oven sometimes
beeps.
• The oven beeps every
minute unless the food
is in the oven after the
food is cooked completely.
• The oven occasionally
beeps during cooking.
• Open and close the door again. (Beeping sounds
indicate that the food is ready to be removed from the
oven after cooking is complete.)
- 25 -
10-2 Customer inquiry cases and countermeasures (Continued)
Symptom
Cause
Countermeasures
Strange popping
sounds are produced
while fish is cooked.
• Since fish is salty and
maintains its moisture, it is cooked while
making a series of soft
popping sounds. (The
liquid may come out of
the fish when the fish is
cooked.)
• Food with bones such as fish (e.g. mackerel) and pork
(e.g. pork chops) is cooked while making a series of
soft popping sounds. Wrap the food completely so that
food particles or spattered oils do not stick to the oven
walls or floor.
Strange smell is produced in the oven.
• It may happen when
food particles stuck to
oven walls or floor.
“
• Clean the inside of the oven. => Remove strange smell
through the Deodorant button => If the strange smell
still remains, place a piece of lemon on the turntable
and operate the oven for 5 minutes by pressing the
Deodorant button.(However, the smells produced from
the food exposed such as herbal remedies are not
removed.)
Error
• Errors are classified into • Clean the inside of the oven. => Remove strange smell
the case which is out
through the Deodorant button => If the strange smell
of order and the case
still remains, place a piece of lemon on the turntable
which is not out of order.
and operate the oven for 5 minutes by pressing the
Deodorant button. (However, the smells produced
from the food exposed such as herbal remedies are
not removed.)
Accessory
Number does not
appear on the display
screen.
• Visit the nearest Samsung Service Center or local
dealer to buy accessories. Before visiting, check the
model name printed on the lower right side of the front
panel of the oven.
It happens when the power • Since the government recommends the reduction of
saving function is actielectricity, the power saving function is performed
vated.
for number display like that power cord is unplugged
when the oven is not used. (Numbers are displayed
when another button is pressed or when the door
opens.)
- 26 -
This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
© Samsung Electronics Co., Ltd. June 2005
Printed in Korea
Code No. : DE68-03952A