TECHNICAL FLASH
Department 731A Toronto
BASIC SERVICE MANUAL
T.F. 22-480
FOR
MICROWAVE OVEN
MODEL 767.8541000 / 767.8541001
767.8541300 / 767.8541301
767.8541900 / 767.8541901
MARCH, 2005
CAUTION
SAFETY PRECAUTIONS
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 CSA Standard should be
performed on each oven prior to release to the owner.
• Proper operation of the microwave ovens requires that the magnetron be assembled to the
wave guide and cavity. Never operate the magnetron unless it is properly installed.
• Be sure that the magnetron gasket is properly installed around the dome of the tube whenever
installing the magnetron.
• Routine service safety procedures should be exercised at all times.
• Untrained personnel should not attempt service without a thorough review of the test
procedures and safety information contained in this manual.
FOREWORD
Read this Manual carefully. Failure to adhere to or observe the information in this Manual may result in exposing
yourself to the Microwave Energy normally contained within the oven cavity.
TABLE OF CONTENTS
(Page)
SAFETY PRECAUTIONS ................................................................................................................... Inside front page
SPECIFICATIONS..................................................................................................................................................... 1-1
CAUTIONS ............................................................................................................................................................... 2-1
INSTALLATION ....................................................................................................................................................... 3-1
OPERATING INS ..................................................................................................................................................... 4-1
CONTROL PANEL............................................................................................................................................. 4-1
CONTROL PANEL INSTRUCTIONS................................................................................................................. 4-2
OVERALL CIRCUIT DIAGRAM................................................................................................................................. 5-1
SCHEMATIC...................................................................................................................................................... 5-1
MATRIX CIRCUIT FOR TOUCH KEY BOARD ................................................................................................. 5-2
GENERAL INFORMATION FOR SERVICE.............................................................................................................. 6-1
GENERAL PRECAUTIONS IN USE.................................................................................................................. 6-1
TRIAL OPERATION .......................................................................................................................................... 6-1
FEATURES AND SPECIFICATIONS FEATURES............................................................................................ 6-1
SERVICE INFORMATION......................................................................................................................................... 7-1
PRECAUTIONS AND REPAIR SERVICE TIPS ................................................................................................ 7-1
MICROWAVE LEAKAGE TEST......................................................................................................................... 7-2
POWER OUTPUT MEASUREMENT................................................................................................................. 7-3
DISASSEMBLY INSTRUCTIONS...................................................................................................................... 7-4
INTERLOCK SYSTEM..................................................................................................................................... 7-12
INTERLOCK CONTINUITY TEST ................................................................................................................... 7-14
TEST AND CHECKOUT PROCEDURES AND TROUBLE SHOOTING ......................................................... 7-15
A. TEST PROCEDURES .......................................................................................................................... 7-15
B. CHECKOUT PROCEDURES ............................................................................................................... 7-18
C. TROUBLE SHOOTING ........................................................................................................................ 7-21
EXPLODED VIEW..................................................................................................................................................... 8-1
REPLACEMENT PARTS LIST........................................................................................................................... 8-8
SPECIFICATIONS
Rated Power Consumption
Microwave Output
Frequency
Power Supply
Rated Current
Magnetron Cooling
Rectification
Door Sealing
Safety Devices
Magnetron
High Voltage Capacitor
High Voltage Diode
Cook top Lamp
Cavity Lamp
Timer
Tray
Overall Dimensions
Oven Cavity Size
Effective Capacity of Oven Cavity
Accessories
---------------------------------------------------------------
-----------------------------------------------------------------
------------------------------------------------
---------------------------------------------------------
---------------------------------------------------
---------------------------------------------------
--------------------------------------------
------------------------------------------------------
-----------------------------------------------------
--------------------------------------------------
--------------------------------------------------------
-------------------------------------------------
-----------------------------------------------------
----------------------------------------------
------------------------------------------------------
----------------------------------
--------------------------------------
-------------------------------------------
-------------------------------------------
-----------------------
1500W maximum (Microwave oven+Cook top lamps+Ventilation fan)
1000W (IEC60705)
Adjustable 100W through 1000W, 10 steps
2450 MHz ± 50 MHz
120 VAC, 60 Hz
13 Amp. (Microwave oven+Cook top lamp+Ventilation fan)
Forced Air Cooling
Rectification Voltage Double Half-Wave
Choke System
Oven Cavity Thermostat:
Open at 90°C ± 5°C
Fuse(20A)
Primary Interlock Switch
Secondary Interlock Switch
Interlock Monitor
2M214-161GP
Capacitor: 1.0µF, 2.1 KV AC
Diode; 350mA, 9.0 KV
125 V, 30 W
125 V, 30 W
Digital, up to 99 mim. 99 sec. (in each cooking stage)
Tempered Safety Glass
15
/16"(W)x167/16"(D)x153/8"(H)
29
197/8"(W)x143/16"(D)x815/16"(H)
1.6 Cu.ft.
Owner’s Manual & Cooking Guide, Installation Manual,
Exhaust Adapter, Exhaust Damper, Mounting Kit and Two Filters,
Rotating Ring Assembly.
1-1
CAUTIONS
Unlike other appliances, the microwave oven is
high-voltage and high-current equipment.
Though it is free from danger in ordinary use,
extreme care should be taken during repair.
• DO NOT operate on a 2-wire extension cord during
repair and use.
• NEVER TOUCH any oven components or wiring during
operation.
• BEFORE TOUCHING any parts of the oven, always
remove the power plug from the outlet.
• For about 30 seconds after the oven stops, an electric
charge remains in the high voltage capacitor. When
replacing or checking, you must discharge the high
voltage capacitor by shorting across the two terminals
with an insulated screwdriver.
MICROWAVE RADIATION
Personnel should not be exposed to the
microwave energy which may radiate from the
magnetron or other microwave generating
device if it is improperly used or connection.
All input and output microwave connections,
waveguide, flange, and gasket must be secure.
Never operate the device without a microwave
energy absorbing load attached.
Never look into an open waveguide or antenna
while the device is energized.
• Proper operation of the microwave oven requires that
the magnetron be assembled to the waveguide and
cavity. Never operate the magnetron unless it is
properly installed.
• Be sure that the magnetron gasket is properly
installed around the dome of the tube whenever
installing the magnetron.
• Remove your watches whenever working close to or
replacing the Magnetron.
• DO NOT touch any parts of the control panel circuit. A
resulting static electric discharge may damage this
P.C.B.
• NEVER operate the oven with no load.
• NEVER injure the door seal and front plate of the oven
cavity.
• NEVER put iron tools on the magnetron.
• NEVER put anything into the latch hole and the interlock
switches area.
ANTENNA
Gasket
COOLING FIN
FILAMENT
TERMINALS
MAGNETRON
CHASSIS GROUND
MAGNETRON
THE OVEN IS TO BE SERVICED ONLY
BY PROPERLY QUALIFIED SERVICE
PERSONNEL.
2-1
INSTALLATIONS
BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY.
PRECAUTIONS ON INSTALLATION
A. Plug the power supply cord into a 120V AC, 60Hz,
single-phase power source with a capacity of 15A
or 20A.
B. Avoid placing the unit in a location where there is
direct heat or splashing water.
C. Install the unit on the mounting plate firmly.
D. Place the unit as far away as possible from TV,
radio, etc. to prevent interference.
GROUNDING INSTRUCTIONS
For personal safety, this appliance must be fully
grounded at all times.
In the event of an electrical short circuit, grounding
reduces the risk of electrical shock.
The plug must be plugged into an outlet that is
properly installed and grounded.
CAUTION
This unit is equipped with a 3-prong plug for your
safety. If the wall outlet is a grounded 3-hole type,
the unit will be grounded automatically.
Plug with Ground
Prong
Properly Polarized
and Grounded
Outlet
WARNING
Improper use of the grounding plug can result in a
risk of electric shock.
Do not, under any circumstances, cut or remove the
third ground prong from the power cord plug.
3-1
CONTROL PANEL
OPERATING INSTRUCTIONS
For Model 85410
4-1
CONTROL PANEL INSTRUCTIONS
1. DISPLAY: The Display includes a clock and indicators to
tell you time of day, cooking time settings and cooking
functions selected.
2. POPCORN: Touch this pad when popping popcorn in
your microwave oven.
3. PIZZA: Touch this pad to reheat 1 to 3 slices.
4. COOK: Touch this pad to cook vegetables, rice, or
casseroles.
5. POTATO: Touch this pad to cook potatoes from 1 to 4.
6. BEVERAGE: Touch this pad to reheat one cup or two
cups a beverage.
7. REHEAT: Touch this pad to reheat dinner plate,
soup/sauce, casserole, roll/muffin.
8. MORE: Touch this pad to add ten seconds of cooking
time each time you press it.
9. CUSTOM COOK: Touch this pad to recall one cooking
instruction previously programmed into memory.
10. LESS: Touch this pad to subtract ten seconds of cooking
time each time you press.
14. TIME: Touch this pad to set a cooking time.
15. POWER: Touch this pad to select a cooking power level.
16. CUSTOM SET: Touch this pad to change the oven’s
default settings for sound, clock, display speed and
defrost weight.
17. TIME OF DAY: Touch this pad to enter the time of day.
18. HOLD WARM: Touch this pad to keep hot, cooked foods
safety warm in your microwave oven for up to 99 minutes
99 seconds.
19. HELP: Touch this pad to learn how to use each oven
function.
20. STOP/CLEAR: Touch this pad to stop the oven or clear
all entries.
21. START: Touch this pad to start a function. If you open
the door after oven begins to cook, retouch START.
22. KITCHEN TIMER: Touch this pad to set the kitchen
timer.
23. ON/OFF: Touch this pad to turn off the turntable.
“OFF” will appear in the display.
11. EXPRESS DEFROST: Meat, poultry, fish. Touch on pad
to select food type and defrost food by weight.
12. QUICK TOUCH PLUS: Touch this pad to set and start
quickly at 100% power level.
13 NUMBER: Touch number pads to enter cooking time,
power level, quantities or weights.
24. LIGHT TIMER: Touch this pad to set the light timer.
25. HI/LOW/OFF: Touch this pad to turn the fan on or
off.
26. HI/LOW/OFF: Touch this pad to turn on the
cooktop/countertop light.
4-2
OVERALL CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM
5-1
MATRIX CIRCUIT FOR TOUCH KEY BOARD
5-2
GENERAL INFORMATION FOR SERVICE
GENERAL PRECAUTIONS IN USE
A. Never operate the unit when it is empty.
Operating the oven with no load may shorten the
life of the magnetron. Whenever cooking dry foods
(dried fish, bread, etc.) or a small amount of food,
be sure to put a glass of water into the cooking
compartment. The glass turntable may become hot
after operating, be careful when touching it.
B. Aluminum foil should be avoided because it will
disrupt cooking and may cause arcing. However,
small pieces may be used to cover some parts of
food to slow the cooking. Any aluminum foil used
should never be closer than 2.5 cm to any side wall
of the oven.
TRIAL OPERATION
After installation, the following sequences and results
should be checked carefully.
A. Put a container filled with water (about 1 liter) into
the oven, and close the door tightly.
B. Set cooking time for 10 minutes by touching “1”
and then “0” three times. “1, 0, 0, 0” appears in
the display window.
C. Touch the START key.
Make sure the cavity light comes on. The unit will
begin cooking and the display window will show the
time counting down by seconds.
D. After about 5 minutes, make sure the primary
interlock switch, the secondary interlock switch and
the interlock monitor switch operate properly by
opening and closing the door several times. Touch
the START key each time the door is closed.
E. Continue operating the unit. Four long beep sound
signal is heard when the time is up. The unit will
shut off automatically.
F. Confirm the water is hot.
G. Finally, measure the output power according to
“POWER OUTPUT MEASUREMENT” on
page 7-3.
FEATURES AND SPECIFICATIONS
FEATURES
A. The safety systems incorporated in this model are:
(1) Primary interlock switch
(2) Secondary interlock switch
(3) Interlock monitor switch
(4) Choke system
(5) Magnetron thermal fuse
(6) Oven cavity thermostat
(Note: This thermostat located on the oven
cavity will open and stop the unit from operation
only if a high temperature is reached, such as,
a fire created by overcooking food.)
B. Any one of 10 power output levels ranging 100W to
1000W can be selected by the touch control and
electronic computer system.
6-1
SERVICE INFORMATION
PRECAUTIONS AND REPAIR SERVICE TIPS
PRELIMINARY
A. SINCE NEARLY 2,100 VOLTS EXISTS IN SOME
CIRCUITS OF THIS UNIT REPAIRS SHOULD BE
CARRIED OUT WITH GREAT CARE.
The filament leads of magnetron carry High
Voltage with respect to ground. Extreme caution
must be exercised. Never plug the unit into a
power source to determine which component is
defective in high voltage section.
B. TO AVOID POSSIBLE EXPOSURE TO
MICROWAVE ENERGY LEAKAGE, THE
FOLLOWING PRECAUTIONS MUST BE TAKEN
BEFORE SERVICING.
(1) Before the power is applied:
(a) Make sure the primary interlock switch, the
secondary interlock switch and the interlock
monitor switch operate properly by opening
and closing the door several by opening and
closing the door several times.
(b) Make sure the perforated screen and the
dielectric choke of the door are correctly and
firmly mounted.
(2) After power is applied:
(a) Make sure the interlock switch mechanism
is operating properly by opening and closing
the door.
(b) Check microwave energy leakage must bebelow
the limit of 5 mW/cm2.
(All service adjustments should be made for
minimum microwave energy leakage
readings).
(3) Do not operate the unit until it is completely
repaired, if any of the following conditions exist.
The unit must not be operated.
(a) The door does not close firmly.
(b) The hinge is broken.
(c) The door seal is damaged.
(d) The door is bent or warped, or there is any
other visible damage on the unit that may
cause microwave energy leakage.
NOTE: Always keep the seal clean.
(e) Make sure that there are no defective parts
in the interlock mechanism.
(f) Make sure that there are no detective parts
in the microwave generating and transmission
assembly (especially waveguide).
(4) The following items should be checked after the
unit is repaired:
(a) The interlock monitor switch is connected
correctly and firmly.
(b) The magnetron gasket is properly positioned
and mounted.
(c) The waveguide and the oven cavity are intact.
(no microwave energy leakage)
(d) The door can be properly closed and the
safety switches work properly.
(e) The unit must stop when the door is opened or
the time is up.
The unit must not be operated with any of the above
components removed or by-passed.
7-1
MICROWAVE LEAKAGE TEST
CAUTIONS
• Be sure to check microwave leakage prior to
servicing the oven if the oven is operative prior to
servicing.
• The service personnel should inform the
manufacture importer, or assembler of any certified
oven unit found to have a microwave emission level
in excess of 5 mW/cm2and should repair any unit
found to have excessive emission levels at no cost to
the owner, and should ascertain the cause of the
excessive leakage. The service personnel should
instruct the owner not to use the unit until the oven has
been brought into compliance.
• If the oven operates with the door open, the service
personnel should:
- Tell the user not to operate the oven.
• The service personnel should check all surface and
vent openings for microwave leakage.
• Check for microwave leakage after every servicing. The
power density of the microwave radiation leakage
emitted by the microwave oven should not exceed
4 mW/cm2. Always start measuring of an unknown field
to assure safety for operating personnel from radiation
leakage.
MEASURING MICROWAVE ENERGY
LEAKAGE
• Pour 275±15cc of 20±5°C(68±9°F) water in a beaker
which is graduated to 600 cc, and place the beaker
on the center of the turntable.
• Set the energy leakage monitor to 2,450 MHz and
use it following the manufacturer's recommended
test procedure to assure correct result.
• When measuring the leakage, always use the 2-inch
(5cm) spacer supplied with the probe.
• Operate the oven at its maximum output.
• Measure the microwave radiation using an
electromagnetic radiation monitor by holding the
probe perpendicular to the surface being measured.
Move probe along shaded area.
Probe scanning speed
Less than 2.5 cm/sec. ( 1 in/sec)
EQUIPMENT
TESTER (VOLTS-DC, AC, Ohmmeter)
•
• Microwave survey meter
- Holaday HI-1500
HI-1501
- Narda 8100
8200
• 600 cc non conductive material beaker (glass or
plastic), inside diameter: approx. 8.5 cm (31/2in.)
• Glass thermometer: 100°C or 212°F (1 deg scale)
7-2
MEASUREMENT WITH THE OUTER CASE
WATER LOAD
TURNTABLE
REMOVED
(1) When you replace the magnetron, measure for
microwave energy leakage before the outer case
is installed and after all necessary components
are replaced or adjusted. Special care should be
taken in measuring the following parts.
- Around the magnetron
- The waveguide
WARNING: AVOID CONTACTING ANY HIGH
VOLTAGE PARTS.
MEASUREMENT WITH A FULLY
ASSEMBLED OVEN
(1) After all components, including the outer
panels, are fully assembled, measure for
microwave energy leakage around the door
viewing window, the exhaust opening and air
inlet openings.
(2) Microwave energy leakage must not exceed the
values prescribed below.
NOTES:
Leakage with the outer panels removed less than
5 mW/cm2. Leakage for a fully assembled oven
(“Before the latch switch (primary) is interrupted”)
with the door in a slightly opened position - less
than 2 mW/cm2.
NOTE WHEN MEASURING
(1) Do not exceed meter full scale deflection.
(2) The test probe must be removed no faster than
1 inch/sec (2.5cm/sec) along the shaded area,
otherwise a false reading may result.
(3) The test probe must be held with the grip portion of
the handle. A false reading may result if the
operator’s hand is between the handle and the
probe.
(4) When testing near a corner of the door, keep
the probe perpendicular to the surface being
tested. (Hold vertically when testing the top and
bottom, and horizontally along the side.)
RECORD KEEPING AND NOTIFICATION
AFTER MEASUREMENT
(1) After adjustment and repair of any microwave
energy interruption or microwave energy blocking
device, record the measured values for future
reference. Also enter the information on the
service invoice.
(2) Should the microwave energy leakage not be
more than 2 mW/cm2after determining that all
parts are in good condition, functioning properly
and genuine replacement parts which are listed in
this manual have been used.
(3) At least once a year, have the electromagnetic
energy leakage monitor checked for calibration
by its manufacturer.
POWER OUTPUT MEASUREMENT
(1) Microwave power output measurement is made with
the microwave oven supplied at its rated voltage and
operated at its maximum microwave power setting
with a load of (1000±5) g of potable water.
(2) The water is contained in a cylindrical borosilicate
glass vessel having a maximum material thickness of
1/8" (3 mm) and an outside diameter of
approximately 7.6" (190mm).
(3) The oven and the empty vessel are at ambient
temperature prior to the start of the test.
(4) The initial temperature (T1) of the water is (10±2)°C
(50°F) It is measured immediately before the water is
added to the vessel. After addition of the water to the
vessel, the load is immediately placed on the center
of the turntable which is in the lowest position and the
microwave power switched on.
(5) The time T for the temperature of the water to rise by
a value ∆T of (10±2)°K is measured, where T is the
time in seconds and ∆T is the temperature rise. The
initial and final water temperatures are selected so
that the maximum difference between the final water
temperature and the ambient temperature is 5°K.
(6) The microwave power output P in watts is
calculated from the following formula :
P =
is measured while the microwave generator is
operating at full power. Magnetron filament heat-up
time is not included. (about 3 sec)
(7) The water is stirred to equalize temperature
throughout the vessel, prior to measuring the final
water temperature.
(8) Stirring devices and measuring instruments are
selected in order to minimize addition or removal of
heat.
4.187Mw(T2 – T1)+0.55Mc(T2 – T0)
t
7-3
DISASSEMBLY INSTRUCTIONS
Figure 1
Screw
Control Panel
(Relay 7)
Relay 7
Power Transformer
(CN1)
Circuit Board
Figure 2
Figure 3
Control Bracket
FPC Connector(S1)
Circuit Board
IMPORTANT NOTES:
UNIT MUST BE DISCONNECTED FROM ELECTRICAL OUTLET WHEN MAKING REPAIRS, REPLACEMENTS, ADJUSTMENTS AND CONTINUITY CHECKS. WAIT AT LEAST ONE MINUTE,
UNTIL THE HIGH VOLTAGE CAPACITOR IN THE
HIGH VOLTAGE POWER SUPPLY HAS FULLY
DISCHARGED.
THE CAPACITOR SHOULD BE DISCHARGED BY
USING INSULATED WIRE - I.E. TEST PROBE
CONNECTED TO 10K-OHM RESISTOR IN SERIES
TO GROUND.
WHEN RECONNECTING THE WIRE LEADS TO
ANY PART, MAKE SURE THE WIRING CONNECTIONS AND LEAD COLORS ARE CORRECTLY
MATCHED ACCORDING TO THE OVERALL CIRCUIT DIAGRAM. (ESPECIALLY SWITCHES AND
HIGH VOLTAGE CIRCUIT.)
A. REMOVING POWER AND CONTROL
CIRCUIT BOARD (Figures 1, 2 and 3)
(1) Remove a screw securing the control panel
assembly to the oven cavity.
(2) Remove the control panel with pushing it upward.
(3) Remove the connector (CN1) and wire leads
(Relay6) from the circuit board.
(4) Remove 3 screws securing the circuit board.
(5) Remove the FPC connector from the terminal
socket following “HOW TO REMOVE THE FPC
CONNECTOR” on the next page.
(6) Remove the circuit board from the control bracket
carefully.
7-4
HOW TO REMOVE THE F.P.C. CONNECTOR
HOW TO INSERT THE F.P.C. CONNECTOR
Follow the steps below as illustrated in Figures 4
and 5 to remove the F.P.C. connector.
(1) Hold the edges of the plastic fastener with
thumb and forefinger.
(Figure 4)
(2) Lift up the lever of the plastic fastener from
the terminal socket by lightly pressing the
lever end with forefinger.
(Figure 5)
(3) Remove the F.P.C. connector from the
terminal socket.
Plastic fastener
Follow the steps below as illustrated in Figures 6
and 7 to insert the F.P.C. connector.
(1) Insert the F.P.C. connector into the terminal
socket securely with the fingers.
(2) Hold the plastic fastener with thumb and
forefinger of the other hand, and push it
slowly into the terminal socket. (Figure 6)
NOTE: When reconnecting the F.P.C
connector make sure that the holes
on the F.P.C. connector are properly
engaged with the hooks on the plastic
fastener
(3) Lock the level of the plastic fastener into the
hook of the terminal socket securely by
releasing the fingers.
(Figure 7)
Plastic fastener
Hook
Holes
F.P.C.
Connector
Plastic fastener
Holes
Terminal
socket
Figure 4
F.P.C.
Connector
Terminal
socket
Figure 5
F.P.C.
Connector
Terminal
socket
Figure 6
Hook
Plastic
fastener
F.P.C.
Connector
Terminal
socket
7-5
Figure 7
B. REMOVING THE OUT CASE(Figure 8)
Controller
Mounting
Plate
Door
Vent Grille
Out Case
Mount, All
Figure 8
Power code
(1) Remove the vent grille by removing two screws
securing it to the out case.
(2) Remove two screws securing it to the front bracket.
(3) Remove two screws securing it to the air duct.
(4) Remove the mounting plate by turning the two
screws securing it to the out case.
(5) Remove the base plate by removing six screws
securing it to the out case. Remove the Mount, All
from the out case by removing two screws securing
it to the out case and one screw securing it to the
ventilation motor ASS'Y and cavity.
(6) Remove the power cord cover from outcase by
removing a screw.
(7) Remove the power cord to the inner of the out case
with turning power cord and remove the out case
with pushing it back.
7-6
C. REMOVING THE DOOR INTERLOCK
Latch Board
WH
(from H.V.Transformer)
WH(from Monitor S/W)
WH
(
from Oven Thermostat
)
WH(from Cooktop lamp
Secondary Interlock Switch
Monitor Interlock Switch
Primary Interlock Switch
GN(from P.C.B)
YL(from P.C.B)
WH
(from Secondary switch)
RD
(from Ry 7)
Figure 9
Latch Board
Secondary
Interlock Switch
Interlock
Monitor Switch
Primary
Interlock Switch
Figure 10
WIRE COLOR
SYMBOL COLOR
WH
BK
BR
RD
BL
PK
GY
N.P.
WHITE
BLACK
BROWN
RED
BLUE
PINK
GREY
GN
GREEN
Not Provided
SWITCHES (Figures 9,10)
(1) Disconnect the wire leads from the interlock
switches.
(2) Remove two screws securing the Latch Board.
(3) Make necessary replacements and check
microwave energy leakage according to
“ADJUSTMENT PROCEDURE” on page 7-12.
7-7
D. REMOVING MAGNETRON
Figure 13
Figure 11
Figure 12
vertgrille
mount all
outcase
Magnetron
(Figures 11 Through 13)
(1) Remove vertgrille.
(2) Remove mount all.
(3) Remove outcase.
(4) Discinnect the wireleads.
(5) Remove the 3 screws and Magnetron very
carefully.
NOTES:
• When removing the magnetron, make sure that its
dome does not hit any adjacent parts, or it may be
damaged.
• When replacing the magnetron, be sure to install the
magnetron gasket in the correct position and be sure
that the gasket is in good condition.
• After replacing the magnetron, check for microwave
energy leakage with a survey meter Check
microwave energy leakage must be below the limit of
5 mW/cm2. (All service adjustments should be made
for minimum microwave energy leakage readings.)
7-8
E. REMOVING STIRRER FAN
Figure 15
Figure 14
Figure 16
Door Screen
Figure 17
(Figures 14 and 15)
(1) Remove one rivet ASS'Y securing it to the oven
upper plate by using knife blade.
(2) Rotate slightly and pull out the stirrer fan cover.
(3) Remove the stirrer fan.
F. REMOVING DOOR (Figure 16)
(1) Remove the vent grille by two screws securing it to
the outcase loosening.
(2) Lift up and draw the door.
NOTES:
• After replacing the door, be sure to check that the
primary interlock switch, the secondary interlock
switch and the interlock monitor switch is in good
operating normally.
• After replacing the door, check for microwave energy
leakage with a survey meter. Microwave energy
leakage must be below the limit of 5mW/cm2. (With a
275 ml water load)
G. DISASSEMBLING DOOR (Figure 17)
(1) Remove the dielectric choke by using knife
blade or small screw driver, etc.
(2) Remove two screws securing it to the door handle.
CAUTION: Be careful not to damage door seal
plate with the screwdriver.
7-9
H. ASSEMBLING DOOR
Space
MOUNT, ALL
Figure 18
Figure 19
Figure 20
(1) When mounting the door assembly to the oven
assembly, be sure to adjust the door assembly
parallel to the chassis. Also adjust so the door has no
play between the inner door surface and oven frame
assembly. If the door assembly is not mounted
properly, microwaves may leak from the clearance
between the door and the oven.
I. REMOVING THE VENTILATION FAN
ASS’Y
(1) Remove the mounting plate by removing two
screws securing it to the back plate.
(See Figure 18)
(2) Remove the two screws securing the MOUNT, ALL
and one screw securing the ventilation fan ASS'Y.
(See Figure 19)
(3) Carefully pull the ventilation motor ASS'Y out of the
microwave oven. (See Figure 20)
7-10
J. REMOVING THE TURNTABLE MOTOR
Wire Leads
Turntable Motor
Figure 23
Figure 21
Figure 22
(1) Remove the turntable.
(2) Remove the turntable shaft VERY CAREFULLY
with a slotted screwdriver. (Figure 21)
(3) Remove the base plate by removing 6 screws
securing it to the oven cavity. (Figure 22)
(4) Disconnect the leadwire from the turntable motor
terminals.
(5) Remove the 2 screws securing the turntable motor
to the oven cavity ASS'Y. (Figure 23)
NOTES:
• Remove the leadwire from the turntable motor VERY
CAREFULLY.
• Be sure to grasp the connector not the wires when
removing.
7-11
INTERLOCK SYSTEM
LATCH
LATCH BOARD
0-1/64"
0-1/64"
Latch Board
Secondary
Interlock Switch
Interlock
Monitor Switch
Primary
Interlock Switch
Figure 24
Figure 25
INTERLOCK MECHANISM
The door lock mechanism is a device which has been specially designed to eliminate completely microwave
activity when the door is opened during cooking and thus to prevent the danger resulting from the microwave
leakage.
ADJUSTMENT PROCEDURES
To avoid possible exposure to microwave energy
leakage, adjust the door latches and interlock
switches, using the following procedure.
The Interlock Monitor and Primary Interlock Switch act
as the final safety switch protecting the user from
microwave energy. The terminals between “COM” and
“NC” of the Interlock Monitor must close when the door
is opened. After adjusting the Interlock Monitor Switch,
make sure that it is correctly connected.
Mounting of the primary/monitor/secondary switches to
the latch board.
CHECK THE DOOR LATCH AND SWITCH
CLOSING.
NOTE:
The outer cover of the microwave oven is
removed.
(1) Set the microwave oven on its side so that you can
see the latch board and the switches, as shown in
Figure 24.
(2) Close the door tightly and check gaps A and B to
be sure they are no more than 1/64" (0.5 mm).
See Figure 25 for close-up view of gaps A and B
(door latches). If all gaps are less than 1/64"
(0.5 mm), adjustment of the latch board may not
be necessary. Go to Steps 5 and 6 to check the
sequence of the switches.
NOTE:
To correct sequence of the Primary Interlock
Switch, Secondary Interlock Switch and the
Interlock Monitor Switch is very important.
If any gap is larger than 1/64" (0.5 mm), you will
need to adjust the latch board”. Go to step 3
and follow all steps in order.
ADJUST THE LATCH AND SWITCH CLOSING
(3) Loosen the two screws holding the plastic latch
board as shown.
(4) With the oven door closed tightly, move the latch
board upward toward the top of the oven and/or
away from the door latch until the gaps are less
than 1/64" (0.5 mm).
Hold the latch board tightly in this position until you
check the sequence of the switches in steps 5
and 6.
7-12
TEST THE LATCH AND SWITCH SEQUENCE
(5) Open the oven door slowly. Watch the door latch,
the Secondary Switch. Release Rod and Lever
on the switches to make sure they are zero to the
body of the switches in the following sequence:
- Primary Interlock Switch
- Secondary Interlock Switch
- Interlock Monitor Switch
Adjust the latch board until the switches operate in
this sequence. See Steps 3 and 4.
(6) Close the oven door slowly and be sure it is tightly
closed. Watch the three switches to make sure
they are zero to the body of the switches in the
following sequence:
- Interlock Monitor Switch
- Primary Interlock Switch
- Secondary Interlock Switch
NOTE: The Interlock Monitor Switch is an added
safety check on the Primary and
Secondary Interlock Switches. If the
Primary and Secondary Interlock Switches
allow the oven to operate with the door
open, the Monitor Switch will blow the
fuse.
(7) When you achieve the proper sequence of
switches in Steps 5 and 6, tighten the latch board
screws at that point.
TEST THE MICROWAVE ENERGY LEAKAGE
Make sure the microwave energy leakage is below the
limit of 1mW/cm2(with a 275 ml water load) and
5mW/cm2(with a 275 ml water load without the
cabinet) when measured with a survey meter.
7-13
INTERLOCK CONTINUITY TEST
A. PRIMARY INTERLOCK SWITCH TEST
When the door is opened slowly, an audible click
should be heard at the same time or successively
at intervals and the latches should activate the
switches with an audible click.
If the latches do not activate the switches when the
door is closed, the switches should be a adjusted in
accordance with the adjustment procedure.
Disconnect the wire lead from the primary switch.
Connect the ohmmeter leads to the common
(COM) and normally open (NO) terminal of the
switch. The meter should indicate an open circuit
in the door open condition.
When the door is closed, the meter should indicate
a closed circuit.
When the primary switch operation is abnormal,
make the necessary adjustment or replace the
switch only with the same type of switch.
B. SECONDARY INTERLOCK SWITCH TEST
Disconnect the wire lead from the secondary
switch.
Connect the ohmmeter leads to the common
(COM) and normally open (NO) terminals of the
switch. The meter should indicate a open circuit
in the door open condition. When the door is
closed, meter should indicate an closed circuit.
When the secondary switch operation is abnormal,
make the necessary adjustment or replace the
switch only with the same type of switch.
C. MONITOR SWITCH TEST
Disconnect the wire lead from the monitor switch.
Connect the ohmmeter leads to the common
(COM) and normally closed (NC) terminals of the
switch. The meter should indicate closed circuit
in the door open condition. When the door is
closed, meter should indicate an open circuit.
When the monitor switch operation is abnormal,
replace with the same type of switch.
NOTE: After repairing the door or the interlock
system, it is necessary to do this continuity
test before operating the oven.
COMPONENTS TEST PROCEDURE RESULTS
SWITCHES Check for continuity of the Door Door
(Wire leads removed) switch with an Ohm-meter open closed
Primary
Switch
Monitor
Switch
Secondary
Switch
COM
COM
COM
NO
NC
NO
NOTE: After checking for the continuity of switches, make sure that they are
connected correctly.
WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION
EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS.
TYPE NO. SZM-V16-FA-63 OR VP-533A-OF OR V-5230Q FOR PRIMARY SWITCH
TYPE NO. SZM-V16-FA-62 OR VP-532A-OF OR V-5220Q FOR MONITOR SWITCH
TYPE NO. SZM-V16-FA-63 OR VP-533A-OF OR V-5230Q FOR SECONDARY SWITCH
7-14
TEST AND CHECKOUT PROCEDURES, AND TROUBLE SHOOTING
Primary
Winding
Secondary
Winding
Filament
Winding
Figure 26
- CAUTIONS -
- DISCONNECT THE POWER SUPPLY CORD
FROM THE WALL OUTLET WHENEVER
REMOVINGING THE CABINET FROM THE UNIT.
PROCEED WITH THE TESTS ONLY AFTER
DISCHARGING THE HIGH VOLTAGE CAPACITOR
AND REMOVING THE WIRE LEADS FROM THE
PRIMARY WINDING OF THE HIGH VOLTAGE
TRANSFORMER. (SEE FIGURE 26)
- ALL OPERATIONAL CHECKS WITH MICROWAVE
ENERGY MUST BE DONE WITH A LOAD (1 LITER
OF WATER IN CONTAINER) IN THE OVEN.
A. TEST PROCEDURES
COMPONENTS TEST PROCEDURES RESULTS
1) Measure the resistance: Across the
MAGNETRON
(Wire leads are
removed)
HIGH-VOLTAGE
TRANSFORMER
(Wire leads are
removed)
filament terminals of the magnetron
with an ohm-meter on Rx1 scale.
2) Measure the resistance: Between
each filament terminal of the
magnetron and the chassis ground
with an ohm-meter on high test scale.
1) Measure the resistance:
With an ohm-meter on Rx1 scale.
a. Primary winding;
b. Filament winding;
c. Secondary winding;
2) Measure the resistance:
With an ohm-meter on highest scale.
a. Primary winding to ground;
b. Filament winding to ground;
Normal reading:
Less than 1 ohm.
Normal reading:
Infinite ohms.
NOTE: Replace the magnetron, if the
magnetron checks and all of the
high voltage component tests are
good, but the unit still does not heat
a load.
Normal readings:
Approx. 0.3 to 0.5 ohm.
Less than 0.1 ohm.
Approx. 65 to 120 ohms.
Normal readings:
Infinite ohms.
Infinite ohms.
NOTE: A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS
SERVICED FOR ANY REASON.
7-15
COMPONENTS TEST PROCEDURES RESULTS
Ohmmeter
Figure 27-a
Ohmmeter
Figure 27-b
Ohmmeter
Figure 28-a
Ohmmeter
Figure 28-b
Measure the resistance:
(1) Terminal to terminal
HIGH-VOLTAGE
CAPACITOR
(2) Terminal to case
Normal reading:
Momentarily indicates several ohms,
and then gradually returns to infinite
ohms.
Abnormal reading:
Indicates continuity or infinite ohms
from the beginning.
Normal readings:
Infinite.
Abnormal reading:
Indicates continuity.
HIGH-VOLTAGE
DIODE
Measure the continuity:
(1) Forward
(1) Reverse
Normal readings:
continuity.
Abnormal reading:
Infinite.
Normal readings:
Infinite.
Abnormal reading:
continuity.
7-16
COMPONENTS TEST PROCEDURES RESULTS
Figure 29
1
2
3
4
5
6
7
8
9
10
11
12
13
Figure 30
1
2
3
BK
RD
WH
Figure 31
TOUCH KEY
BOARD
Measure the resistance between terminal
pins of connector KEY CONNECTOR.
NOTE:
When reconnecting the FPC connector,
make sure that the holes on the FPC
connector are properly engaged with hooks
on the plastic fastener.
MATRIX CIRCUIT FOR
TOUCH KEY BOARD
CONNECTOR(KEY CON)
(For detail matrix circuit of each model,
refer to page 5-2.)
Resistance
value
FPC CONNECTOR
When
touched
Less than
400 ohms
Top
When not
touched
More than
1 mega ohm
SENSOR
(For sensor model only)
Normal: Approximately
BK~RD: 4.5~6.2 Kohm
RD~WH: 2.0~3.5 Kohm
BK~WH: 2.0~3.5 Kohm
Abnormal: Infinite or several.
7-17
COMPONENTS TEST PROCEDURES RESULTS
Relay 2
Figure 32
Check for continuity of relay 2 with an
ohm-meter.
(Remove wire leads from relay 2 and
operate the unit.)
POWER
LEVEL
1
2
4 sec
6 sec
18 sec
16 sec
3
4
5
RELAY2
CAUTION:
2(White) and 5(Red) must be correctly
connected Relay 6.
These two connectors are not Interchangeable.
NOTES:
• A MICROWAVE ENERGY TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR
ANY REASON.
• MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.
• WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT
THE WIRES.
The relay connector
6
7
8
9
10
8 sec
10 sec
12 sec
14 sec
16 sec
18 sec
20 sec
22 sec
14 sec
12 sec
10 sec
8 sec
6 sec
4 sec
2 sec
0
B. CHECKOUT PROCEDURES
(1) CHECKOUT PROCEDURES FOR FUSE BLOWING
CAUTION: REPLACE BLOWN FUSE WITH 20 AMPERE FUSE.
PROBLEMS CAUSES
Fuse blows immediately after
the door is closed.
Fuse blows immediately after
the door is opened.
Fuse blows when the door is closed and START
key is touched.
NOTES:
• If the fuse is blown by an improper switch operation, replace the all Interlock switches, PCB Ass’y and the fuse at
the same time. After replacing the the all Interlock switches, PCB Ass’y, Fuse with new ones, make sure that they
are correctly connected.
• Check for microwave energy leakage according to INTERLOCK ADJUSTMENT PROCEDURES on page 7- 12
when the primary interlock, secondary interlock switches and/or the interlock monitor switches are adjusted or
replaced.
Improper operation of the primary interlock, secondary
interlock switches and/or the interlock monitor switch.
Malfunction of the high voltage transformer; the high
voltage capacitor including the diode, the magnetron,
the blower motor or the circuit board.
7-18
(2) CHECKOUT PROCEDURES FOR RELAY.
- PROBLEM (A) -
T.T. motor and oven lamp turn on without touching
START key when the door is closed.
NO
GOOD
YES
Remove the mate connector of I/O
CON from the circuit board.
Does the unit still operate?
NO
Replace the
circuit board
Defective
RELAY3
Replace
RELAY3
YES
- PROBLEM (B) -
T.T. motor and oven lamp turn on When the door is
closed and START key is touched.
7-19
YES
GOOD
NO
Measure the voltage at pin NO.
4 of U01
Voltage reading: 0 Vdc
NO
Defective
Replace the
circuit board
RELAY3 or poor
connection of
RELAY3
Replace
RELAY3 or correct
the connection.
YES
(3) CHECKOUT PROCEDURES FOR CIRCUIT
BOARD
The following symptoms indicate a defective circuit
board.
1) The start function fails to operate but the high
voltage Systems, the interlock switches, the door
sensing and the relay check good.
2) The unit with a normal relay continuously operates.
3) Proper temperature measurement is not obtained.
4) The buzzer does not sound or continues to sound.
5) Some segments of one or more digits do not light
up, or they continue to light up, or segments light
when they should not.
NOTE: A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS
SERVICED FOR ANY REASON.
6) Wrong figures appear.
7) The figures of all digits.
8) Some of the indicators do no flicker light up.
9) The clock does not keep time properly.
7-20
HW
DR
1
ni
p
n
ee
w
t
e
b
eg
atlov
e
r
u
s
aeM
.1NC
rotce
n
noc
fo
3
nip
d
n
a
snuR
snuR
0
02
1
0
0
2
1
V
0
21
ecal
p
eR
d
r
a
ob
ti
u
c
ri
c
l
amroN
ecnatsiser
e
g
atloV
t
c
er
r
o
c
ni
t
c
e
r
r
oC
snoi
t
c
e
nn
o
c
lamroN
d
r
ao
b
ti
u
c
ric
sn
uR
snuR
snuR
h
c
u
ot f
o
e
cna
t
sise
r
eru
s
a
e
M
gnivome
r
r
e
tf
a
dr
a
ob yek
.
1
S
r
o
t
ce
n
n
o
c
)
7
1
7
d
n
a
4
7
eg
a
p
eeS(
lamroN
e
c
nat
si
s
e
r
e
c
n
a
tsi
s
eR
tce
r
rocni
h
c
u
o
t ecal
p
eR
.
d
r
ao
b
y
e
k
hcuo
t
lamroN
dr
a
ob yek
rooP
t
c
atn
o
c
tcerroC
gnitaes
tcatnoC
k
o
ecalpeR
draob tiucric
lamroN
draob
ti
ucric
lamroN
tcatnoc
t
c
a
tnoc kcehC
1S rotcennoc fo
plugged into wall outlet.
2. FUSE (See “CHECKOUT PROCEDURES FOR FUSE BLOWING: on page 7- 18)
3. OVEN CAVITY THERMOSTAT
• “DISPLAY” Problems, “A” thru “C”
• “HELP UP” Problems, “D” thru “E” • “BUZZER Problems, “F”
PROBLEM - A: “PLEASE SET TIME OF DAY” does not appear in display window when power supply cord is
C. TROUBLE SHOOTING
Before following this troubleshooting read “TRIAL OPERATION” on page 6- 1.
Check: 1. POWER SUPPLY
1
7-21
correct indications when programmed.
PROBLEM - B: Display does not show correct numbers and/ or
1
snuR
snuR
s
nuR
t
c
at
n
o
C
KO
ecalpeR
draob tiucric
l
a
m
ro
N
d
r
aob tiucric
tcatnoc rooP
ecalpe
R
draob tiucric
lamro
N
dra
o
b ti
u
c
ri
c
KO tcatnoC
lamroN
tcatnoc
tcer
r
o
C
g
nita
e
s
fo tcatnoc kcehC
1
S
r
o
tce
n
noc
fo tcatnoc eht
k
c
e
hC
)81-7 egap ees(6 yaler
ON
y
ti
unit
n
o
c
ecnatsiseR
tcerrocni
fo ytiunitnoc eht kcehC
)61-7 egap ees( .C.V.H
.T.V.H lamroN
ecnatsiseR
tcerrocni
.C.V.H lamroN
lamronbA
.
D
.
V.H ec
al
peR
lam
r
oN
nortengaM
ecalpeR
nortengaM
la
m
roN
lam
roN
.D.
V
.
H
eht kcehC
.D.V.H fo ytiunitnoc
)61-7 egap ees(
.C.V.H ecalpeR
lamroN
ecnatsiser
.T.V.H ecalpeR
lamroN
ecnatsiser
f
o
e
c
nat
si
s
e
r
er
u
s
a
e
M
r
e
m
r
o
fsn
a
rT
.V
.
H
)
5
1-
7
e
ga
p
e
e
s
(
START key is touched for "HIGH POWER" cooking.
2 . THERMOSTAT
Check: 1. PRIMARY AND SECONDARY INTERLOCK SWITCHES
PROBLEM - C: Unit does not heat up even if display counts down when
1
2
7-22
lam
r
oN
d
r
aob tiu
c
ri
c
l
a
m
r
on
kce
hC
noitarepo
d
r
aob tiucric
ecal
p
eR
d
r
ao
b
ti
u
c
ri
c
snuR
stages or at end of cooking
PROBLEM - D: No buzzing when touching the key, between
1
7-23
snuR
sn
u
R
sn
uR
sn
uR
tcatnoC
KO
O
N
t
c
a
t
n
o
c
e
cal
p
eR
tatsomreht n
e
vo
t
c
a
t
n
o
c
ro
oP
e
c
alp
e
R
d
raob
ti
u
c
ri
c
la
m
ro
N
d
ra
ob
ti
u
c
ri
c
KO tcatnoC
lamroN
tcatnoc
tcerroC
gnitaes
tcatnoc kcehC
1
S r
ot
cenn
o
c
f
o
)
4
7
e
g
a
p
e
e
s
(
e
c
al
pe
R
noitalitnev
S
SA
r
otom
Y
snur O
N
lamroN
noitalitnev
rotom
fo tca
t
noc eht kceh
C
tat
s
o
m
re
ht
n
e
v
o
2. FUSE
Check: 1. POWER SUPPLY
PROBLEM - G: Ventilation fan does not operate when “FAN HIGH/ LOW” key is touched.
1
7-24
13581A
13552A
13536A
13213A
14890A
13650A
14970A
14026A
WTT028
13551A
For Model
767.85413
13720D
14760A
#EV#
EXPLODED VIEW
DOOR PARTS
8-1
24810P
*07
268711
24781M
WTP018
23551A
24810P
23572A
23506A
*07
268711
24781M
WTP018
23551A
#EV#
CONTROLLER PARTS
For Model: 767.85410
767.85419
For Model: 767.85413
8-2
36912C
35026G
63302A
WTT022
WTT028
33112U
368771
WTT029
WTT027
34810T
33530A
34890C
WTT010
WTT022
35230A
63303A
34810Q
34960A
WTT021
*02
*01
*04
*05
34930R
33550L
For Model
767.85419
767.85413
For Model
767.85410
WTT027
WTT029
#EV#
OVEN CAVITY PARTS
8-3
466001
43500A
466003
466001
44510A
43501A
WSZ085
#EV#
LATCH BOARD PARTS
8-4
56170D
33390G
34370T
35889A
WTP013
WTP015
54810C
50CZZH
WSZ002
56851D
WTT021
WSZ002
33052A
53300B
56324A
WSZ002
56201B
WTT021
36549S
33740A
53300A
WTT021
#EV#
INTERIOR PARTS(I)
8-5
36549V
56912B
53550L
55262A
55231C
56804A
WTT028
WSZ002
56930V
50FZZA
568771
54930F
55892A
53550F
340511
56411A
56201A
WSZ002
#EV#
INTERIOR PARTS(II)
8-6
63300M
65862D
65862B
VINYL
BAG
63861A
#EV#
INSTALLATION PARTS
8-7
REPLACEMENT PARTS LIST
For Model: 767.85410 I/C : INTERCHANGEBILITY CODE Mar. 29. 2005
Location
No.
*01 MANUAL,OWNERS 3828W5A4048 → 3828W5A8142 R
*02 MANUAL,SERVICE 3828W5S3674 → 3828W5S5159 R
*04 MANUAL,INSTALLATION 3828W5U0348 → 3828W5U0438 R
*05 LABEL,COOKING GUIDE 3850W2A233D → 3850W2A233G R
*06 TEMPLATE 4922W5A027A → 4922W1A021C R
*07 CARD,TECHNICAL 3840W1T004C → 3840W1T004F R
*10 BOX,YELLOW 3890W3Y819H → 3890W3Y927B R
13213A DOOR FRAME ASSEMBLY 3213W1A035C → 3213W1A049G R
13536A SEAL TAPE 3536WRA001R → 3536W1A012B R
13552A CHOKE COVER 3552W1A032B → 3552W1A032E R
13581A DOOR ASSEMBLY 3581W1A352A → 3581W1A352H R
13650A HANDLE,DOOR 3650W1A075A → 3650W1A075E R 3650W1A075A
13720D PANEL,DOOR 3720W0D259A → 3720W0D259D R 3720W0D259A
14026A LATCH 4026W2A015A → 4026W2A019A R
14760A BAFFLE 4890W1A021X → 4760W0A002D R 4760W0A002A
14890A GLASS 4970WRA001E → 4890W1A066C R 4890W1A054D
14970A SPRING 4760W0A002A → 4970WRA001G R
23506A KEY MEMBRANE 3506W1A600A 3506W1A600A R
23551A SERVICE PARTS(CONTROL PANEL+KEY PAD) → 383EW5A204E R
23572A PANEL,CONTROL 3720W0C058A → 3720W0C058D R
24781M CONTROLLER ASSEMBLY,MICOM 4781W1M307G → 4781W1M307U R
24810P BRACKET,CONTROL PANEL 4810W1G061B → 4810W1G061E R 4810W1G061B
268711 PWB(PCB) ASSEMBLY,SUB 6871W1S106D → 6871W1S106F R
33052A CANOPY,RESIN 3052WRA002A → 3052W1A002A R
33112U OUT CASE,U-BENDING 3112W1U026H → 3112W0U052H R
33390G TRAY,GLASS 1B71961E → 1B71961H R
33530A GRILLE,VENT 3530W0A030A → 3530W0A030E R
33550L COVER,LAMP 3550W3A095A → 3550W3A095C R 3550W3A095A
33740A PROTECTOR (MECH) 3740W1A005A → 3740W1A005E R 3740W1A005A
340511 RIVET ASSEMBLY 4051W3A001A 4051W3A001A R
34370T SHAFT,TURN TABLE 3B72373A → 4370W1A006B R
34810Q BRACKET,MOUNT 4810W3G062A → 4810W1A149A R
34810T BRACKET,LAMP 4810W3G100A → 4810W1A150C R
34890C GLASS 4890W4A001G → 4890W1A045A R 4890W4A001G
34930R HOLDER,COOK AUXILIARY 4890W4A001G → 4930W1A069A R
34960A MOUNT 4930W1A026A → 4960W1A021B R
35026G SHELF 4960W1A004B → 5026W1A048C R
35230A FILTER(MECH),GREASE 5026W1A048C → 5230W1A012A R 2B72705C
35230A FILTER(MECH),GREASE 2B72705B → 5230W1A012A R 5230W1A012B
35889A ROTATING RING ASSEMBLY 5889W2A012D → 5889W2A012F R
36549S MOTOR(CIRC),SYNCHRONOUS 6549W1S013C → 6549W1S011M R 6549W1S015C
36549V MOTOR(CIRC),VENTILATION 6549W1V006F 6549W1V006F R
368771 HARNESS 6877W1A340A → 6877W1A002A R
36912C LAMP,DRAWING 6912W3Q001A → 6912W1Z004B R
43500A BOARD,LATCH 3500W1A013A → 3500W1A028B R
43501A BOARD ASSEMBLY,LATCH 3501W1A019C → 3501W1A019D R
44510A LEVER 4510W4A005A → 4510W3A012C R
466001 SWITCH,MICRO 3B73362F → 6600W1K001D R 6600W1K004C
466001 SWITCH,MICRO 3B73362F → 6600W1K001D R 6600W1K003D
Part Name SVC Alternate
Difference Chart (Part No)
767.8541000 I/C 767.8541001
8-8
Location
No.
466003 SWITCH,MICRO 3B73361E → 6600W1K001C R 6600W1K003C
466003 SWITCH,MICRO 3B73361E → 6600W1K001C R 6600W1K004B
50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B R 0CZZW1H004G
50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B R 0CZZW1H002H
50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B R 0CZZW1H001Q
50FZZA FUSE,DRAWING 3B74133K → 3B74133Q R 3B74133K
53300A PLATE,BOTTOM 3300W1A052A → 3300W1A052B R 3300W1A052A
53300B PLATE,BOTTOM 3300W1A003A → 3300W1A003D R 3300W1A003A
53550F COVER,STIRRER FAN 3550W1A126A → 3550W1A126B R 3550W1A126A
53550L COVER,LAMP 3550W3A082A → 3550W1A189A R
54810C BRACKET,CAPACITOR 4810W3C002A → 4810W1A141A R
54930F HOLDER,STIRRER FAN 4930W3A013A → 4930W1A068A R
55231C FILTER(MECH),CHARCOAL 2B72706D → 5230W1A011A R 5230W1A011B
55262A DUCT 5208W0A006A → 5208W0A006B R
55892A FAN 5892W1A003A 5892W1A003A R
56170D TRANSFORMER,HIGH VOLTAGE 6170W1D052B 6170W1D052B R
56201A FILTER ASSEMBLY(CIRC) 2B72130F 2B72130F R
56201B FILTER ASSEMBLY(CIRC) 2B71165P → 6201W2A019D R
56324A MAGNETRON 6411W1A010L → 2B71165R R
56411A POWER CORD ASSEMBLY 6201W2A019D → 6411W1A010Z R
56804A SOCKET(CIRC),LAMP 6804W3A001A 6804W3A001A R
56851D CABLE ASSEMBLY 6021W3B001A → 6021W3B001V R 6021W3B001G
56851D CABLE ASSEMBLY 6021W3B001A → 6021W3B001V R 6851W1A002B
568771 HARNESS 6877W1A409C → 6877W1A004B R
56912B LAMP,DRAWING 3B70067A → 6912W1Z004A R
56930V THERMOSTAT 6930W1A003E 6930W1A003E R 6930W3A001S
63300M PLATE,MOUNTING 3300W0M003A → 3300W0A018A R
63302A BASE PLATE 3302W0A013H → 3302W0A047A R
63303A BASE PLATE ASSEMBLY 3303W1A041N → 3303W1A072G R
63861A KIT ASSEMBLY 2B72771A → 3861W1A043A R
65862B BRACKET,MISC 3B72144A → 4810W1A151A R
65862D DAMPER 3B71432A → 4900W1A001B R
WSZ002 SCREW TAP TITE(S),BINDING HEAD 1SBF0402418 1SBF0402418 R
WSZ085 SCREW,DRAWING 4B70188B → 4B70188C R
WTP013 SCREW TAPPING,PAN HEAD 1TPL0402418 1TPL0402418 R
WTP015 SCREW TAPPING,PAN HEAD 1TPL0402618 1TPL0402618 R
WTP018 SCREW TAPPING,PAN HEAD 1TPL0402818 1TPL0402818 R
WTT010 SCREW TAPPING,TRUSS HEAD 1TTG0402422 1TTG0402422 R
WTT021 SCREW TAPPING,TRUSS HEAD 1TTL0402418 1TTL0402418 R
WTT022 SCREW TAPPING,TRUSS HEAD 1TTL0402422 1TTL0402422 R
WTT028 SCREW TAPPING,TRUSS HEAD 1TTL0402818 1TTL0402818 R
WTT029 SCREW TAPPING,TRUSS HEAD 1TTL0402822 1TTL0402822 R
Part Name SVC Alternate
Difference Chart (Part No)
767.8541000 I/C 767.8541001
8-9
REPLACEMENT PARTS LIST
For Model: 767.85413 I/C : INTERCHANGEBILITY CODE Mar. 29. 2005
Location
No.
*01 MANUAL,OWNERS 3828W5A4048 → 3828W5A8142 R
*02 MANUAL,SERVICE 3828W5S3674 → 3828W5S5159 R
*04 MANUAL,INSTALLATION 3828W5U0348 → 3828W5U0438 R
*05 LABEL,COOKING GUIDE 3850W2A233D → 3850W2A233G R
*06 TEMPLATE 4922W5A027A → 4922W1A021C R
*07 CARD,TECHNICAL 3840W1T004C → 3840W1T004F R
*10 BOX,YELLOW 3890W3Y819J → 3890W3Y927C R
13213A DOOR FRAME ASSEMBLY 3213W1A035D → 3213W1A049F R
13536A SEAL TAPE 3536WRA001R → 3536W1A012B R
13551A SERVICE PARTS(DOOR PANEL+GLASS+COVER) 383EW5A204A → 383EW5A204C R
13552A CHOKE COVER 3552W1A032B → 3552W1A032E R
13581A DOOR ASSEMBLY 3581W1A355A → 3581W1A355E R
13650A HANDLE,DOOR 3650W1A075D → 3650W1A075H R 3650W1A075D
14026A LATCH 4026W2A015A → 4026W2A019C R
14760A BAFFLE 4760W0A002B → 4760W0A002E R 4760W0A002B
14890A GLASS 4890W1A021Y → 4890W1A066D R 4890W1A054E
14970A SPRING 4970WRA001E → 4970WRA001G R
23551A CONTROLLER ASSEMBLY,SUB 383EW5A205A → 4781W1A299B R
24781M CONTROLLER ASSEMBLY,MICOM 4781W1M311B → 4781W1M311F R
24810P BRACKET,CONTROL PANEL 4810W1G061B → 4810W1G061E R 4810W1G061B
268711 PWB(PCB) ASSEMBLY,SUB 6871W1S106D → 6871W1S106F R
33052A CANOPY,RESIN 3052WRA002A → 3052W1A002A R
33112U OUT CASE,U-BENDING 3112W1U026J → 3112W0U052J R
33390G TRAY,GLASS 1B71961E → 1B71961H R
33530A GRILLE,VENT 3530W0A030D → 3530W0A030H R
33550L COVER,LAMP 3550W3A095A → 3550W3A095C R 3550W3A095A
33740A PROTECTOR (MECH) 3740W1A005A → 3740W1A005E R 3740W1A005A
340511 RIVET ASSEMBLY 4051W3A001A 4051W3A001A R
34370T SHAFT,TURN TABLE 3B72373A → 4370W1A006B R
34810Q BRACKET,MOUNT 4810W3G062A → 4810W1A149A R
34810T BRACKET,LAMP 4810W3G100A → 4810W1A150C R
34890C GLASS 4890W4A001G → 4890W1A045A R 4890W4A001G
34930R HOLDER,COOK AUXILIARY 4930W1A026A → 4930W1A069A R
34960A MOUNT 4960W1A004B → 4960W1A021B R
35026G SHELF 5026W1A048C 5026W1A048C R
35230A FILTER(MECH),GREASE 2B72705B → 5230W1A012A R 2B72705C
35230A FILTER(MECH),GREASE 2B72705B → 5230W1A012A R 5230W1A012B
35889A ROTATING RING ASSEMBLY 5889W2A012D → 5889W2A012F R
36549S MOTOR(CIRC),SYNCHRONOUS 6549W1S013C → 6549W1S011M R 6549W1S015C
36549V MOTOR(CIRC),VENTILATION 6549W1V006F 6549W1V006F R
368771 HARNESS 6877W1A340A → 6877W1A002A R
36912C LAMP,DRAWING 6912W3Q001A → 6912W1Z004B R
43500A BOARD,LATCH 3500W1A013A → 3500W1A028B R
43501A BOARD ASSEMBLY,LATCH 3501W1A019C → 3501W1A019D R
44510A LEVER 4510W4A005A → 4510W3A012C R
466001 SWITCH,MICRO 3B73362F → 6600W1K001D R 6600W1K004C
466001 SWITCH,MICRO 3B73362F → 6600W1K001D R 6600W1K003D
466003 SWITCH,MICRO 3B73361E → 6600W1K001C R 6600W1K003C
466003 SWITCH,MICRO 3B73361E → 6600W1K001C R 6600W1K004B
Part Name SVC Alternate
Difference Chart (Part No)
767.8541300 I/C 767.8541301
8-10
Location
No.
50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B R 0CZZW1H004G
50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B R 0CZZW1H002H
50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B R 0CZZW1H001Q
50FZZA FUSE,DRAWING 3B74133K → 3B74133Q R 3B74133K
53300A PLATE,BOTTOM 3300W1A052A → 3300W1A052B R 3300W1A052A
53300B PLATE,BOTTOM 3300W1A003A → 3300W1A003D R 3300W1A003A
53550F COVER,STIRRER FAN 3550W1A126A → 3550W1A126B R 3550W1A126A
53550L COVER,LAMP 3550W3A082A → 3550W1A189A R
54810C BRACKET,CAPACITOR 4810W3C002A → 4810W1A141A R
54930F HOLDER,STIRRER FAN 4930W3A013A → 4930W1A068A R
55231C FILTER(MECH),CHARCOAL 2B72706D → 5230W1A011A R 5230W1A011B
55262A DUCT 5208W0A006A → 5208W0A006B R
55892A FAN 5892W1A003A 5892W1A003A R
56170D TRANSFORMER,HIGH VOLTAGE 6170W1D052B 6170W1D052B R
56201A FILTER ASSEMBLY(CIRC) 2B72130F 2B72130F R
56201B FILTER ASSEMBLY(CIRC) 6201W2A019D 6201W2A019D R
56324A MAGNETRON 2B71165P → 2B71165R R
56411A POWER CORD ASSEMBLY 6411W1A010L → 6411W1A010Z R
56804A SOCKET(CIRC),LAMP 6804W3A001A 6804W3A001A R
56851D CABLE ASSEMBLY 6804W3A001A → 6021W3B001V R 6021W3B001G
56851D CABLE ASSEMBLY 6021W3B001A → 6021W3B001V R 6851W1A002B
568771 HARNESS 6877W1A409C → 6877W1A004B R
56912B LAMP,DRAWING 3B70067A → 6912W1Z004A R
56930V THERMOSTAT 6930W1A003E 6930W1A003E R 6930W3A001S
63300M PLATE,MOUNTING 3300W0M003A → 3300W0A018A R
63302A BASE PLATE 3302W0A013H → 3302W0A047A R
63303A BASE PLATE ASSEMBLY 3303W1A041N → 3303W1A072G R
63861A KIT ASSEMBLY 2B72771A → 3861W1A043A R
65862B BRACKET,MISC 3B72144A → 4810W1A151A R
65862D DAMPER 3B71432A → 4900W1A001B R
WSZ002 SCREW TAP TITE(S),BINDING HEAD 1SBF0402418 1SBF0402418 R
WSZ085 SCREW,DRAWING 4B70188B → 4B70188C R
WTP013 SCREW TAPPING,PAN HEAD 1TPL0402418 1TPL0402418 R
WTP015 SCREW TAPPING,PAN HEAD 1TPL0402618 1TPL0402618 R
WTP018 SCREW TAPPING,PAN HEAD 1TPL0402818 1TPL0402818 R
WTT010 SCREW TAPPING,TRUSS HEAD 1TTG0402422 1TTG0402422 R
WTT021 SCREW TAPPING,TRUSS HEAD 1TTL0402418 1TTL0402418 R
WTT022 SCREW TAPPING,TRUSS HEAD 1TTL0402422 1TTL0402422 R
WTT027 SCREW TAPPING,TRUSS HEAD 1TTL0402816 1TTL0402816 R
WTT028 SCREW TAPPING,TRUSS HEAD 1TTL0402818 1TTL0402818 R
Part Name SVC Alternate
Difference Chart (Part No)
767.8541300 I/C 767.8541301
8-11
REPLACEMENT PARTS LIST
For Model: 767.85419 I/C : INTERCHANGEBILITY CODE Mar. 29. 2005
Location
No.
*01 MANUAL,OWNERS 3828W5A4048 → 3828W5A8142 R
*02 MANUAL,SERVICE 3828W5S3674 → 3828W5S5159 R
*04 MANUAL,INSTALLATION 3828W5U0348 → 3828W5U0438 R
*05 LABEL,COOKING GUIDE 3850W2A233D → 3850W2A233G R
*06 TEMPLATE 4922W5A027A → 4922W1A021C R
*07 CARD,TECHNICAL 3840W1T004C → 3840W1T004F R
*10 BOX,YELLOW 3890W3Y819G → 3890W3Y927A R
13213A DOOR FRAME ASSEMBLY 3213W1A035D → 3213W1A049F R
13536A SEAL TAPE 3536WRA001R → 3536W1A012B R
13552A CHOKE COVER 3552W1A032B → 3552W1A032E R
13581A DOOR ASSEMBLY 3581W1A352B → 3581W1A352J R
13650A HANDLE,DOOR 3650W1A075B → 3650W1A075F R
13720D PANEL,DOOR 3720W0D259B → 3720W0D259E R
14026A LATCH 4026W2A015A → 4026W2A019A R
14760A BAFFLE 4760W0A002B → 4760W0A002E R
14890A GLASS 4890W1A021Y → 4890W1A066D R 4890W1A054E
14970A SPRING 4970WRA001E → 4970WRA001G R
23506A KEY MEMBRANE 3506W1A600B 3506W1A600B R
23551A SERVICE PARTS(CONTROL PANEL+KEY PAD) → 383EW5A204D R
23572A PANEL,CONTROL 3720W0C058B → 3720W0C058E R
24781M CONTROLLER ASSEMBLY,MICOM 4781W1M307H → 4781W1M307V R
24810P BRACKET,CONTROL PANEL 4810W1G061B → 4810W1G061E R 4810W1G061B
268711 PWB(PCB) ASSEMBLY,SUB 6871W1S106D → 6871W1S106F R
33052A CANOPY,RESIN 3052WRA002A → 3052W1A002A R
33112U OUT CASE,U-BENDING 3112W1U026J → 3112W0U052J R
33390G TRAY,GLASS 1B71961E → 1B71961H R
33530A GRILLE,VENT 3530W0A030B → 3530W0A030F R 3530W0A030B
33550L COVER,LAMP 3550W3A095A → 3550W3A095C R 3550W3A095A
33740A PROTECTOR (MECH) 3740W1A005A → 3740W1A005E R 3740W1A005A
340511 RIVET ASSEMBLY 4051W3A001A 4051W3A001A R
34370T SHAFT,TURN TABLE 3B72373A → 4370W1A006B R
34810Q BRACKET,MOUNT 4810W3G062A → 4810W1A149A R
34810T BRACKET,LAMP 4810W3G100A → 4810W1A150C R
34890C GLASS 4890W4A001G → 4890W1A045A R 4890W4A001G
34930R HOLDER,COOK AUXILIARY 4930W1A026A → 4930W1A069A R
34960A MOUNT 4960W1A004B → 4960W1A021B R
35026G SHELF 5026W1A048C 5026W1A048C R
35230A FILTER(MECH),GREASE 2B72705B → 5230W1A012A R 2B72705C
35230A FILTER(MECH),GREASE 2B72705B → 5230W1A012A R 5230W1A012B
35889A ROTATING RING ASSEMBLY 5889W2A012D → 5889W2A012F R
36549S MOTOR(CIRC),SYNCHRONOUS 6549W1S013C → 6549W1S011M R 6549W1S015C
36549V MOTOR(CIRC),VENTILATION 6549W1V006F 6549W1V006F R
368771 HARNESS 6877W1A340A → 6877W1A002A R
36912C LAMP,DRAWING 6912W3Q001A → 6912W1Z004B R
43500A BOARD,LATCH 3500W1A013A → 3500W1A028B R
43501A BOARD ASSEMBLY,LATCH 3501W1A019C → 3501W1A019D R
44510A LEVER 4510W4A005A → 4510W3A012C R
466001 SWITCH,MICRO 3B73362F → 6600W1K001D R 6600W1K004C
466001 SWITCH,MICRO 3B73362F → 6600W1K001D R 6600W1K003D
Part Name SVC Alternate
Difference Chart (Part No)
767.8541900 I/C 767.8541901
8-12
Location
No.
466003 SWITCH,MICRO 3B73361E → 6600W1K001C R 6600W1K003C
466003 SWITCH,MICRO 3B73361E → 6600W1K001C R 6600W1K004B
50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B R 0CZZW1H004G
50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B R 0CZZW1H002H
50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B R 0CZZW1H001Q
50FZZA FUSE,DRAWING 3B74133K → 3B74133Q R 3B74133K
53300A PLATE,BOTTOM 3300W1A052A → 3300W1A052B R 3300W1A052A
53300B PLATE,BOTTOM 3300W1A003A → 3300W1A003D R 3300W1A003A
53550F COVER,STIRRER FAN 3550W1A126A → 3550W1A126B R 3550W1A126A
53550L COVER,LAMP 3550W3A082A → 3550W1A189A R
54810C BRACKET,CAPACITOR 4810W3C002A → 4810W1A141A R
54930F HOLDER,STIRRER FAN 4930W3A013A → 4930W1A068A R
55231C FILTER(MECH),CHARCOAL 2B72706D → 5230W1A011A R 5230W1A011B
55262A DUCT 5208W0A006A → 5208W0A006B R
55892A FAN 5892W1A003A 5892W1A003A R
56170D TRANSFORMER,HIGH VOLTAGE 6170W1D052B 6170W1D052B R
56201A FILTER ASSEMBLY(CIRC) 2B72130F 2B72130F R
56201B FILTER ASSEMBLY(CIRC) 6201W2A019D 6201W2A019D R
56324A MAGNETRON 2B71165P → 2B71165R R
56411A POWER CORD ASSEMBLY 6411W1A010L → 6411W1A010Z R
56804A SOCKET(CIRC),LAMP 6804W3A001A 6804W3A001A R
56851D CABLE ASSEMBLY 6021W3B001A → 6021W3B001V R 6021W3B001G
56851D CABLE ASSEMBLY 6021W3B001A → 6021W3B001V R 6851W1A002B
568771 HARNESS 6877W1A409C → 6877W1A004B R
56912B LAMP,DRAWING 3B70067A → 6912W1Z004A R
56930V THERMOSTAT 6930W1A003E 6930W1A003E R 6930W3A001S
63300M PLATE,MOUNTING 3300W0M003A → 3300W0A018A R
63302A BASE PLATE 3302W0A013H → 3302W0A047A R
63303A BASE PLATE ASSEMBLY 3303W1A041N → 3303W1A072G R
63861A KIT ASSEMBLY 2B72771A → 3861W1A043A R
65862B BRACKET,MISC 3B72144A → 4810W1A151A R
65862D DAMPER 3B71432A → 4900W1A001B R
WSZ002 SCREW TAP TITE(S),BINDING HEAD 1SBF0402418 1SBF0402418 R
WSZ085 SCREW,DRAWING 4B70188B → 4B70188C R
WTP013 SCREW TAPPING,PAN HEAD 1TPL0402418 1TPL0402418 R
WTP015 SCREW TAPPING,PAN HEAD 1TPL0402618 1TPL0402618 R
WTP018 SCREW TAPPING,PAN HEAD 1TPL0402818 1TPL0402818 R
WTT010 SCREW TAPPING,TRUSS HEAD 1TTG0402422 1TTG0402422 R
WTT021 SCREW TAPPING,TRUSS HEAD 1TTL0402418 1TTL0402418 R
WTT022 SCREW TAPPING,TRUSS HEAD 1TTL0402422 1TTL0402422 R
WTT027 SCREW TAPPING,TRUSS HEAD 1TTL0402816 1TTL0402816 R
WTT028 SCREW TAPPING,TRUSS HEAD 1TTL0402818 1TTL0402818 R
Part Name SVC Alternate
Difference Chart (Part No)
767.8541900 I/C 767.8541901
8-13
P/NO : 3828W5S5159
Printed in Korea
Loading...