Thermador Mcds Service Manual

MICROWAVE OVEN

SERVICE MANUAL

MODEL: MCDS

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

SAFETY PRECAUTIONS

This device is to be serviced only by properly qualified service personnel.
Consult the service manual for proper service procedures to assure continued safety operation and for precautions to be
taken to avoid possible exposure to excessive microwave energy.

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.

CONTENTS

(Page)

SAFETY PRECAUTIONS

SPECIFICATIONS

CAUTIONS

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INSTALLATION

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OPERATING INSTRUCTIONS

FEATURES

CONTROL PANEL

SCHEMATIC DIAGRAM

CIRCUIT DESCRIPTION

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SERVICE INFORMATION

TOOLS AND MEASURING INSTRUMENTS

MICROWAVE LEAKAGE TEST

MEASUREMENT OF MICROWAVE POWER OUTPUT

DISASSEMBLY AND ADJUSTMENT

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Inside front cover

1-1

2-1

3-1

4-1

4-1

4-1

4-2

4-3

5-1

5-1

5-1

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5-3

5-3

INTERLOCK CONTINUITY TEST

COMPONENT TEST PROCEDURE

TROUBLE SHOOTING

EXPLODED VIEW

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REPLACEMENT PARTS LIST

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5-8

5-9

5-14

6-1

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7-1

SPECIFICATIONS

ITEM

MODEL

Power Requiremen

Power Output

Microwave Frequency

Magnetron

Timer

Outside Dimensions

Cavity Dimensions

Net Weight

Shipping weight

Control Complement

DESCRIPTION

MCDS

120 Volts AC 60Hz
Single phase, 3 wire grounded
Microwave 1500W
Convection 1500W
Grill 1200W
Combination 1500W

1000 Watts full microwave power (IEC60705)

2450 MHz

2M246

0 ~ 99 min. 99 sec.

575(W) X 378(H) X 508(D) mm

387(W) X 276(H) X 387(D) mm

24.2 kg (approx.)

27.7 kg (approx.)

Touch Control System

Clock : 1:00 - 12:59

Microwave Power for Variable Cooking

Power level

HIGH ............................... Full power throughout the cooking time

9 (Saute)

7 (Med.-High)

5 (Med.-Low)

3 (Low)

1 (Warm)

• Convection - 100°F and 225°F to 450°F

• Combination

Accessories

This microwave oven is designed for household use only.

Owner's manual

Glass Tray

Rotating Ring

Short Metal Rack

Metal Tray

..........................

..................

...................

............................

.........................

approx. 90% of Full power, 8 (Reheat)

approx. 70%, 6 (Medium)

approx. 50%, 4 (Defrost)

approx. 30%, 2 (Simmer)

approx. 10%

.......

approx. 80%

......

approx. 60%

.......

approx. 40%

.......

approx. 20%

It is not recommended for commercial purposes.

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 connected.
All input and output microwave connections,
waveguide, flange, and gasket must be
secured 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.

ANTENNA

GASKET

• 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.

COOLING FIN

FILAMENT
TERMINALS

MAGNETRON
CHASSIS GROUND

MAGNETRON

THE OVEN IS TO BE SERVICED ONLY
BY PROPERLY QUALIFIED SERVICE
PERSONNEL.

2-1

INSTALLATION

BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY.

INSTALLING

1. Empty the microwave oven and clean inside it with
a soft, damp cloth. Check for damage such as
misaligned door, damage around the door or dents
inside the cavity or on the exterior.

2. Put the oven on a counter, table, or shelf that is
strong enough to hold the oven and the food and
utensils you put in it. (The control panel side of the
oven is the heavy side. Use care when handling.)

3. Do not block the vent and the air intake openings.
Blocking vent or air intake openings can cause
damage to the oven and poor cooking results.
Make sure the microwave oven legs are in place to
ensure proper air flow.

4. The oven should not be installed in any area where
heat and steam are generated, because they may
damage the electronic or mechanical parts of the unit.
Do not install the oven next to a conventional
surface unit or above a conventional wall oven.

5. Use microwave oven in an ambient temperature
less than 104°F(40°C).

6. Place the microwave oven on a sturdy and flat
surface at least 10 cm(4 inches) from the wall.

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.

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.

PREFERRED METHOD

ENSURE PROPER GROUND

EXISTS BEFORE USE

7. Place the microwave oven as far away as possible
from TV, RADIO, COMPUTER, etc., to prevent
interference.

10cm

3-1

OPERATING INSTRUCTIONS

Short Metal Rack

High Metal Rack

Oven Front Plate

Window Door Screen

Door Seal

Safety Interlock
System

Control Panel

Display Window

Glass Tray

Metal Tray

Rotating Ring

FEATURES

CONTROL PANEL

1

2

3

5

6

8

4

7

4-1

1. Display. This display includes a clock and indicators to tell you the

time of day, cooking time settings, cook powers, quantities, weights,
and cooking functions.

2. AUTO SENSOR REHEAT. Touch this pad to reheat from a variety

of food categories available.

3. AUTO SENSOR COOK. Touch this pad to cook from a variety of

food categories available.

4. AUTO SENSOR POPCORN. Touch this pad to pop a bag of

popcorn in any of 3 sizes.

5. CUSTOM DEFROST. Touch this pad to defrost frozen food by

weight or quantity.

6. POWER LEVEL. Touch this pad to set the amount of microwave

energy released to cook the food. The higher the number, the higher
the power wattage and the faster the “cooking speed.”

7. COOK TIME. Touch this pad to set cooking time.

8. CUSTOM CONVECT. Touch this pad to cook in Custom Convection

mode. See “Convection and Combination Cooking”.

9. CUSTOM COMBI. Touch this pad to cook in Custom Combination

mode. See “Convection and Combination Cooking”.

10. CUSTOM BROIL. Touch this pad to cook in Custom Broil mode.

See “Using Your Microwave Oven”.

11. Number pads. Touch number pads to control sound volume,

weight, language, scroll speed, clock, cooking times, cook powers,
or quantities.

12. TIMER. Touch this pad to set or cancel the timer function.

13. CLOCK. Touch this pad to enter the correct time of day.

14. AUTO CONVECTION pads. Touch one of these pads to select

type of food to be cooked. Touch SPECIALTY FOODS pad once
for Warm Hold.
See “Using Warm Hold” section.

15. START/PLUS TIME. Touch this pad to start a function you have

set or to cook food for 30 seconds at 100% cook power.

16. PERSONALCHOICE. Touch this pad to, change sound volume to

low, medium, high or off, to change weight measurement from lbs to
kilograms, to change the language displayed, to change scroll speed,
to change the clock from 12 hours to 24 hours, or to turn on/off.

17. CANCEL/OFF. Touch this pad once to clear a incorrect command

or to cancel a program during cooking. This pad will not erase the
time of day.

SCHEMATIC DIAGRAM

NOISE

FILTER

ASSY

THERMOSTAT

SYMBOL

* NOTE:

1. DOOR IS OPENED.

2. WIRE COLOR.

COLOR

BROWN

RED
PINK
BLUE
BLACK
GREEN

YELLOW
WHITE

BN
RD
PK
BL
BK
GN
YL
WH

THERMISTOR

CONVECTION HEATER

CIRCULATION

MOTOR

DAMPER

MOTOR

DAMPER

SWITCH

GRILL

HEATER

BKWH

NL

GN

BK

BK

BK

O.L

F.M

D.M

C.M

T.T.M

BL

BK

WH

WH

WH

WH

WH

WH

RY3

RY4

RY2

WH

RD BK

WH

YL

YL

YL

RD

RD

RD

RD

CN1

1

3

5

123123

7

9

CN2

1

1234
1234

2

3

4

CN4 CN5

PK

RY1

RY6

RY7

PK

YL

YL

GN

GN

YL

RD

BN

RD

RD

F

FA

BL

BK

BL

BL

BL

BN

AC 120V/60Hz
SINGLE PHASE ONLY

FUSE 20A

PRIMARY
SWITCH

SENCONDARY

SWITCH

H. V. DIODE

H. V.

CAPACITOR

MAGNETRON

CHOKE FILTER

MONITOR SWITCH

H.V TRANSFORMER

L.V. TRANSFORMER

HUMIDITY

SENSOR

OVEN LAMP

FAN MOTOR

TURN TABLE

MOTOR

4-2

CIRCUIT DESCRIPTION

L

FUSE

H.V.

TRANS-

FORMER

RELAY 2

MICOM CONTROLLER

SECONDARY
SWITCH

PRIMARY

SWITCH

MONITOR

SWITCH

N

L

GENERAL DETAILS

• The low voltage transformer supplies the necessary
voltage to the micom controller when power cord is
plugged in.

• When the door is closed, the primary switch is ON, the
secondary switch is ON, and the monitor switch opens
(contact COM and NO).

WHEN SELECTING COOKING POWER
LEVEL AND TIME

• The micom controller memorizes the function you set.

• The time you set appears in the display window.

• Each indicator light turns on to indicate that the stage

has been set.

WHEN TOUCHING THE START PAD

• The coil of the relay is energized by the micom
controller.

• Power input is supplied to the high voltage transformer
through the fuse to the primary switch and relay 2.

• Turntable rotates.

WHEN THE DOOR IS OPENED DURING
COOKING

• Both the primary switch and relay 2 cut off the primary
winding voltage of the high voltage transformer.

• ON-OFF of relay 2 is coupled electrically with opening
and closing of the secondary switch.

• When the door is opened, the secondary switch is
opened and when the door is closed, the secondary
switch is closed.

• The cooking time stops counting down.

• Relay stops functioning.

• As the door is opened, if the contact of primary switch

and relay 2 and/or secondary switch fail to open, the
fuse opens due to the large current surge caused by the
monitor switch activation, which in turn stops magnetron
oscillation.

N

H.V.

TRANS-

FORMER

SECONDARY
SWITCH

FUSE

L

L

PRIMARY

SWITCH

RELAY 2

MONITOR

SWITCH

• The fan motor rotates and cools the magnetron by
blowing the air (coming from the intake on the base-plate).

• The air is also directed into the oven to exhaust the
vapor in the oven through the upper plate.

• Cooking time starts counting down.

• 3.15 volts AC is generated from the filament winding of

the high voltage transformer. This 3.15 volts is applied
to the magnetron to heat the magnetron filament
through two noise-preventing choke coils.

• A high voltage of approximately 2200 volts AC is
generated in the secondary of the high voltage
transformer which is increased by the action of the high
voltage diode and charging of the high voltage
capacitor.

• The negative 4,000 Volts DC is applied to the filament
of the magnetron.

WHEN THE OVEN IS SET AT ANY LEVEL
EXCEPT MAXIMUM.

• The micom controller controls the ON-OFF time of relay
2 by the applied signal to vary the average output power
of microwave oven as POWER LEVEL. (refer to page 1-1)

• One complete cycle of relay 2 is 22 seconds.

MICOM CONTROLLER

WHEN TOUCHING THE START KEY
WITH THE CONVECTION COOKING.

• The contacts of the primary switch and the secondary
switch close the circuit.

• Damper close.

• Turntable rotate.

• Fan Motor, Circulation Motor rotate.

4-3

OVEN THERMOSTAT

N

G-Y

E

L

L

RELAY 4

CONVECTION

HEATER

SERVICE INFORMATION

TOOLS AND MEASURING INSTRUMENTS

NECESSARY TOOLS

Tools normally used for TV servicing are sufficient.
Standard tools are listed below.

• Diagonal pliers

• Long nose pliers

• Phillips screwdriver

• Flat blade screwdriver

• Wrench (size 5mm)

• Nutdriver (size 5mm)

• Adjustable wrench

• Soldering iron

• Solder

• Vinyl insulation tape

• Polishing cloth

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.

- Contact the manufacturer.

• 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.

NECESSARY MEASURING INSTRUMENTS

• TESTER (VOLTS-DC, AC, Ohmmeter)

• Microwave survey meter

- Holaday HI-1500
HI-1501

- Narda 8100
8200

• Inch scale

• 600 cc non conductive material beaker (glass or plastic),

inside diameter: approx. 8.5 cm (31/2in.)

• Cylindrical and made of borosilicate glass vessel.
max. thickness: 3 mm
outside diameter: approx. 190mm
height: approx. 90mm

• Glass thermometer: 100°C or 212°F (1 deg scale)

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 and

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)

5-1

MEASUREMENT WITH OUTER CASE
REMOVED

• 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. (Circled area of Fig. below)

- Around the magnetron

- The waveguide

WARNING : AVOID CONTACTING ANY

HIGH VOLTAGE PARTS

NOTES WHEN MEASURING

• Do not exceed meter full scale deflection.

• The test probe must be removed no faster than

1 inch/sec (2.5 cm/sec) along the shaded area,
otherwise a false reading may result.

• 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.

• When testing near a corner of the door, keep the probe
perpendicular to the surface making sure the probe is
moved horizontally along the oven surface; this may
possibly cause probe damage.

RECORD KEEPING AND NOTIFICATION
AFTER MEASUREMENT

• 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.

• The microwave energy leakage should not be more
than 4 mW/cm2.sq. after determining that all parts are in
good condition, functioning properly and genuine
replacement parts which are listed in this manual have
been used.

• At least once a year, have the electromagnetic energy
leakage monitor checked for calibration by its
manufacturer.

MEASUREMENT WITH A FULLY
ASSEMBLED OVEN

• After all components, including the outer case, are fully
assembled, measure for microwave energy leakage
around the door viewing window, the exhaust opening,
and air inlet openings.

• Microwave energy leakage must not exceed the values
prescribed below.

NOTE: Leakage with the outer case removed less than

5 mW/cm
oven (Before the latch switch (primary) is
interrupted) with the door in a slightly opened
position-less than 2 mW/cm2.sq.

2

.sq. Leakage for a fully assembled

Button Head

(Torx style 2)

5-2

MEASUREMENT OF MICROWAVE POWER OUTPUT

WATER LOAD

TURNTABLE

• 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.

• The water is contained in a cylindrical borosilicate glass
vessel having a maximum material thickness of 3 mm
and an outside diameter of approximately 190mm.

• The oven and the empty vessel are at ambient
temperature prior to the start of the test.

• The initial temperature (T1) of the water is (10±2)°C. 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.

• 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.

• The microwave power output P in watts is calculated
from the following formula:

P =

4187 x (∆T) + 0.55 x (T

2

- T0) x M

T

2

: Temperature after heating

• T

0

: Temperature of bowl

• T

• M : Weight of bowl

is measured while the microwave generator is operating
at full power. Magnetron filament heat-up time is not
included. (about 3 sec)

• The water is stirred to equalize temperature throughout
the vessel, prior to measuring the final water temperature.

• Stirring devices and measuring instruments are selected
in order to minimize addition or removal of heat.

DISASSEMBLY AND ADJUSTMENT

A. OUTER CASE REMOVAL

1) Disconnect the power supply cord from the outlet.

2) Remove the screws from the rear of the case.
The outer case must be moved backward to be lifted
off.

B. POWER SUPPLY CORD

1) Remove the outer case.

2) Disconnect two terminals, and remove one screw of
the ground terminal.

C. CONTROL PANEL ASSEMBLY

1) Open the door.

2) Disconnect the leadwire from RELAY (RY2) of the
PCB SUB ASS’Y.

3) Disconnect the leadwire from connector (CN1) of the
PCB SUB ASS’Y.

4) Lift up and pull out control panel assembly carefully
from the cavity.

CAUTION: DISCHARGE THE HIGH VOLTAGE

CAPACITOR BEFORE SERVICING

(refer to page 2-1)

Remove the screw

P.C.B ground

Lift up and pull out control panel

5-3

D. P.C.B ASSEMBLY REMOVAL

Key

Membrane

Control Panel

PCB Sub Asm

1) Remove the control panel assembly from the cavity.
(Refer to control panel assembly removal on
previous page.)

2) Remove screws which hold the P.C.B SUB ASS’Y
to the control panel.

3) Pull P.C.B. SUB ASS’Y carefully from the control
panel.

Remove choke cover

Remove door assembly

Door seal plate

E. DOOR ASSEMBLY / REMOVAL

1) Open the door.

2) Remove the choke cover very carefully with a flat-blade
screwdriver.

CAUTION: Be careful not to damage door seal plate

by screwdriver.

3) Lift up and pull the door.

NOTE:

1. After replacing the door, be sure to check that the

primary switch, monitor switch, and secondary switch
operate normally.

2. After replacing the door, check for microwave energy

leakage with a survey meter. Microwave energy must
be below the limit of 5 mW/cm2. (with a 275 ml water
load)

3. 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.

Spacer

5-4

F. AIR DUCT ASSEMBLY / REMOVAL

Waveguide

Magnetron

Air Duct

Magnetron
Gasket

Magnetron

Dome
Waveguide

Bracket

H. REMOVING THE TURNTABLE MOTOR

1) Disconnect the leadwire from the lamp and micro
switch.

2) Remove the mounting screw to the magnetron.

G. MAGNETRON REMOVAL

1) Disconnect the leadwire from the magnetron.

2) Carefully remove the mounting screws holding the
magnetron and the waveguide.

3) Remove the magnetron ASS’Y until the tube is
clear from the waveguide.

NOTE:

1.

When removing the magnetron, make sure its dome
does not hit any adjacent parts, or it may be damaged.

2. 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.

3. After replacing the magnetron, check for microwave
leakage with a survey meter around the magnetron.
Microwave energy must be below the limit of 5
mW/cm2. (With a 275 ml. water load).

Make sure that gasket is rigidly attached to the
magnetron. To prevent microwave leakage, tighten

the mounting screws properly, making sure there is
no gap between the waveguide and the magnetron.

1) Remove the turntable and rotating ring.

2) Lay the unit down on its back.

3) Remove the turntable motor cover.
The turntable base cover is easily removed by
pinching the eight parts with a wire cutting.

4) Disconnect the leadwire from the turntable motor
terminals.

5) Remove the screws securing the turntable motor to
the oven cavity ASS’Y.

6) After repairing the motor, rotate the removed
turntable motor cover.

7) Fit the turntable motor cover’s projecting part to the
base plate slit.

NOTE:

1. Remove the wire lead from the turntable motor
VERY CAREFULLY.

2. Be sure to grasp the connector, not the wires, when
removing.

Wire Leads

Turntable Motor

5-5

I. HIGH VOLTAGE TRANSFORMER

H.V.
Transformer

Suction

Guide

Noise Filter

H.V.
Capacitor

Fan Motor

H.V Diode

C. Protector

H.V.C

Bracket

REMOVAL

1) Discharge the high voltage capacitor.

2) Disconnect the leadwire from magnetron, high voltage
transformer, and capacitor.

3) Remove the screws holding the high voltage
transformer to the baseplate.

L. INTERLOCK SYSTEM

1) 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.

J. FAN MOTOR ASSEMBLY / REMOVAL

1) Discharge the high voltage capacitor.

2)

Disconnect the leadwire from fan motor, noise filter
and high voltage capacitor.

3) Remove the two screws holding the the suction
guide A
voltage

4)

Remove the two screws holding the fan motor ASS’Y

SS’Y to the oven cavity and remove the high
diode earth screw.

to the suction guide ASS’Y.

K. HIGH VOLTAGE CAPACITOR AND

DIODE REMOVAL

1) Discharge the high voltage capacitor.

2) Disconnect the leadwire from fan motor, noise filter
and high voltage capacitor.

3)

Remove the screw holding the suction guide ASS’Y to
the oven cavity and remove the high voltage diode
earth screw.

4)

Remove the screw holding the high voltage capacitor
bracket.

ADJUSTMENT

DIRECTION

PRIMARY

SWITCH

MONITOR

SWITCH

SECONDARY

SWITCH

2) MOUNTING OF THE PRIMARY/MONITOR/
SECONDARY SWITCHES TO THE LATCH
BOARD

3) INSTALLATION AND ADJUSTMENT OF THE
LATCH BOARD TO THE OVEN ASSEMBLY

• Mount the latch board to the oven assembly.

• Adjust the latch board in the arrow direction so that

oven door will not have any play in it when the door
is closed.

• Tighten the mounting screw.

• Check for play in the door by pushing the door

release button. Door movement should be less
than 0.5 mm. (1/64 inch)

Don't push the door release button while making this
adjustment. Make sure that the latch moves
smoothly after adjustment is completed and that the
screws are tight. Make sure the primary, monitor,
and secondary switches operate properly by
following the continuity test procedure.

5-6

M. C-MOTOR, THERMISTOR AND

SHEATH HEATER REMOVAL

1) Remove four screws securing the cover assembly
to the oven cavity.

2) Disconnect the leadwire from the circulation motor
terminal and the sheath heater.

3) Remove four hex nuts holding chamber ass’y to the
oven cavity.

4) Remove the screws of the thermistor, chamber
ass’y.

5) Remove a hex nut securing the circulation fan to
shaft of the C-motor.

6) Remove screws securing the motor bracket to the
chamber ass’y.

7) Remove four screws securing the C-motor to the
motor bracket.

O. GRILL HEATER REMOVAL

1) Disconnect the sensor connector from P.C.B Sub
Ass’y.

2) Remove the screw securing air tunnel to the oven
cavity.

3) Disconnect connector from P.C.B Sub Ass’y.

4) Lift the Grill heater Ass’y.

N. SENSOR REMOVAL

1) Disconnect the sensor connector from P.C.B. Sub
Ass’y.

2) Remove the screw securing sensor to Air tunnel.

5-7

INTERLOCK CONTINUITY TEST

NO

COM

NC

COM

NO

COM

WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION

EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS.

TYPE NO. SZM-V 16-FA-63 OR VP-533A-OF FOR PRIMARY SWITCH
TYPE NO. SZM-V 16-FA-62 OR VP-532A-OF FOR MONITOR SWITCH
TYPE NO. SZM-V 16-FA-63 OR VP-533A-OF FOR SECONDARY SWITCH

A. PRIMARY INTERLOCK SWITCH TEST

When the door release button is depressed slowly
with the door closed, an audible click should be
heard at the same time or successively at
intervals. When the button is released slowly, 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

NOTE : After checking for the continuity of switches, make sure that they are

connected correctly.

5-8

COMPONENT TEST PROCEDURE

PRIMARY

TERMINAL

SECONDARY

FILAMENT
WINDING

CAUTIONS

1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE
OUTER CASE FROM THE UNIT. PROCEED WITH THE TEST ONLY AFTER DISCHARGING THE HIGH
VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE
HIGH VOLTAGE TRANSFORMER. (SEE PAGE 2-1)

2. ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY MUST BE DONE WITH A LOAD (1 LITER
OF WATER IN CONTAINER) IN THE OVEN.

COMPONENTS TEST PROCEDURE RESULTS

HIGH VOLTAGE
TRANSFORMER
(Wire leads removed)

MAGNETRON
(Wire leads removed)

1. Measure the resistance.
(Ohm-meter scale: Rx1 and Rx100)

• Primary winding

• Secondary winding

• Filament winding

2. Measure the resistance.
(Ohm-meter scale: Rx1000)

• Primary winding to ground

• Filament winding to ground

1. Measure the resistance.
(Ohm-meter scale: Rx1)

• Filament terminal

2. Measure the resistance.
(Ohm-meter scale: Rx1000)

• Filament to chassis

Approx.: 0.3 ~ 0.6 ohm
Approx.: 70 ~ 100 ohm
Less than: 1 ohm

Normal: Infinite
Normal: Infinite

Normal: Less than 1 ohm

Normal: Infinite

5-9

COMPONENTS TEST PROCEDURE RESULTS

Antenna

Gasket

Chassis

Filament

NOTE: When testing the magnetron, be sure to install the magnetron gasket

in the correct position and be sure that the gasket is in good condition.

HIGH VOLTAGE
CAPACITOR

HIGH VOLTAGE
DIODE

Measure the resistance.
(Ohm-meter scale: Rx1000)

• Terminal to terminal.

Measure the resistance.
(Ohm-meter scale: Rx1000)

• Terminal to case.

Measure the continuity (Forward).
(Ohm-meter scale: Rx10000)

Normal: Momentarily indicates

several ohms, and
then gradually returns
to infinite.

Normal: Infinite.

Normal: Continuity.
Abnormal: Infinite.

NOTE :
Some inexpensive meters
may indicate infinite
resistance in both direction.

Measure the continuity (Reverse).
(Ohm-meter scale: Rx10000)

5-10

Normal: Infinite.
Abnormal: Continuity.

COMPONENTS TEST PROCEDURE RESULTS

FUSE
(Wire leads removed.)

HEATER ELEMENT
(Wire leads removed)

Check for continuity of the switch with a
Multi-meter.

NOTE: If the fuse is blown, check the primary, the secondary, and the monitor

switches, H.V.D. and H.V.C. before replacing the fuse.
If the fuse is blown by improper switch operation replace the defective
switch and the fuse at the same time.
Replace just the fuse if the switches operate normally.

Measure the resistance.
(Multi-meter scale : R x 1)

Normal Abnormal

Normal:
Approx. 9.5 ohm
(at 20~30°C)

OVEN THERMOSTAT
MAGNETRON
THERMOSTAT

FAN MOTOR
(Wire leads removed)

NOTE: Make sure heater is fully cooled when tested.

Approx 145°C Approx 145°C

Normal:
Approx. 49 ohm.

Abnormal: Infinite or several

ohm.

5-11

COMPONENTS TEST PROCEDURE RESULTS

CIRCULATION MOTOR
(Wire leads removed)

NOTE:
*( ) = WIRE COLOR

GRILL HEATER
(Wire leads removed)

Measure the resistance.
(Multi-meter scale : R x 1)

Measure the resistance.
(Multi-meter scale : R x 1)

Normal : Approx. 26.9 Ω
Abnormal : Infinite or several

ohm.

Normal : Approx. 22.8 Ω
Abnormal : Infinite or several

ohm.

TURNTABLE MOTOR
(Wire leads removed)

Measure the resistance.
(Ohmi-meter scale : R x 1000)

Normal : Approx. 2~4 KΩ
Abnormal : Infinite or several

ohm.

5-12

COMPONENTS TEST PROCEDURE RESULTS

THERMISTOR
(Disconnect the 2 pin
connector from PCB)

RELAY 2, 3, 4 OF P.C.B
(Wire leads removed.)
RY2 : Microwave
RY3 : Grill
RY4 : Convection

RY 3

RY 4

RY 2

Normal at room temperature
(20°C~30°C)

Approx. 255 K

Cooking Start OFF

Ω

NOTE : A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS

SERVICED FOR ANY REASON.
MAKE SURE THE WIRE LEADS ARE CORRECT POSITION.
WHEN REMOVING THE WIRE LEAD FROM THE PARTS, BE SURE TO GRASP THE
CONNECTOR, NOT THE WIRES.

5-13

TROUBLE SHOOTING

WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF
THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE
MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL.

CAUTIONS

1. Check grounding before checking for trouble.

2. Be careful of the high voltage circuit.

3. Discharge the high voltage capacitor. (See page 2-1)

4. When checking the continuity of the switches or of the high voltage transformer, disconnect one lead wire
from these parts and then check continuity with the AC plug removed. To do otherwise may result in a
false reading or damage to your meter.

5. Do not touch any part of the circuit on the P.C.B since static electric discharge may damage this control
panel.
Always touch yourself to ground while working on this panel to discharge any static charge built up in your
body. (Micom model only)

CONDITION

Microwave oven

does not work.

Output power is too low. Low AC input voltage.

Sparks occur.

Inserting many plugs into one
outlet and using them at the
same time
(blown fuse or breaker)

Microwave oven plug is not
inserted tightly.

Food temperature is too low.

Using metallic ware and
allowing it to touch the oven
wall.

CAUSE REMEDY

Avoid using other electrical
appliances when you use the
microwave oven.

Insert microwave oven plug
securely.

Use the microwave oven at
adequate line voltage.

This may not be a defect.
It is possible that the food
should be cooked for a
longer time period.

Do not use metallic ware for
cooking except that noted in
the cooking guide.

Uneven cooking.

Ceramic ware trimmed in
gold or silver powder is used.

Inconsistent intensity of
microwave by their
characteristics.

5-14

Do not use any type of
cookware with metallic
trimming.

1. Use plastic wrap or lid.

2. Stir once or twice while
cooking soup, cocoa or
milk, etc.

(TROUBLE 1) The following visual conditions indicate a probable defective control circuit.

1. Incomplete segments.

• Segment missing.

• Partial segment missing.

• Digit flickering (NOTE: Slight flickering is normal.)

2. Colon does not turn on or blink.

3. A distinct change in the brightness of one or more numbers in display.

4. One or more digits in the display are not lighting.

5. Display indicates a number different from one touched, for example, key in 5 and 3 appears in the display.

6. Specific numbers (for example 7 or 9) will not display when key pad is touched.

7. Display does not count down with time blinking or up with clock operation.

8. Display obviously jumps in time while counting down.

9. Display counts down too fast while cooking.

10. Each indicator light does not turn on after setting cooking cycle.

11. Display time of day does not reappear when cooking is finished.

CONDITION CHECK RESULT CAUSE REMEDY

1. No input can be
programmed.

2. Some inputs
cannot be
programmed.

3. Display shows a
number or figure
different from one
touched.

4. Random
programming
when touching
other pads.

5. Display is fixed
at some figure
and can not
accept any
input.

Check the conn­ection between
membrane key
assembly and
PCB assembly.

Replace key
membrane
assembly and
check operation.

Continuity.

No continuity.

Everything works
as specified.

Still have trouble.

Defective PCB
assembly.

Loose
connection.

Defective key
membrane
assembly.

Defective PCB
assembly.

Replace PCB
assembly.

Connect them
tightly.

Replace key
membrane
assembly.

Replace PCB
assembly.

5-15

(TROUBLE 2) Oven does not operate at all, display window does not display any figures,

and no input is accepted.

CONDITION CHECK RESULT CAUSE REMEDY

1. Fuse blows. Continuity.

Check continuity
of monitor
switch (with
door closed).

Replace fuse

Check continuity
of primary
switch (with
door opened).

Check continuity
of secondary
switch (with
door opened).

No continuity.

Continuity.

No continuity.

Continuity.

No continuity.

Malfunction of the
monitor switch.

Shorted contact at
the primary switch.

Malfunction of
secondary switch.

Replace fuse,
primary, monitor,
secondary
switches, and
RELAY(RY2) of
PCB Assembly.

Replace fuse,
primary, monitor,
secondary
switches, and
RELAY(RY2) of
PCB Assembly.

Replace fuse,
primary, monitor,
secondary
switches, and
RELAY(RY2) of
PCB Assembly.

Disconnect one
side of the wire
lead connected
from transformer
to the high
voltage
capacitor and
operate the unit.

Normal.

Fuse blows again

Defective high
voltage capacitor.

Defective high volt­age transformer.

NOTE : All these switches must be replaced at the same time. Refer to page 5-7, 5-8

2. Fuse does not
blow.

Check continuity
of thermostat.

Check continuity
of power supply
cord.

No continuity.

Continuity.

No continuity.

Defective
thermostat.

Defective power
supply cord.

Replace high
voltage capacitor.

Replace high volt­age transformer.

Replace
thermostat.

Replace power
supply cord.

5-16

(TROUBLE 3) Display shows all figures set, but oven does not start cooking while desired

program times are set and START pad is touched.

CONDITION CHECK RESULT CAUSE REMEDY

1.Setting time does
not count down
when touching
START pad.

2. Fan motor or
oven lamp do
not turn on.

Check continuity
of secondary
switch (with
door closed).

Check the con­nection between
CN1 connector
and PCB
assembly.

Check fan motor.

Check oven lamp.

No continuity.

Continuity.

Continuity

No continuity

Abnormal.

Abnormal.

Normal.

Defective
secondary switch.

Defective PCB
assembly.

Loose connection.

Defective fan motor.

Defective oven lamp.

Replace
secondary switch.

Replace PCB
assembly.

Connect them
tightly.

Replace fan motor.

Replace

oven lamp.

(TROUBLE 4) Oven seems to be operating but little heat is produced in oven load.

CONDITION CHECK RESULT CAUSE REMEDY

Output is low.

NOTE: Simple test of power output-conducted by heating one liter water for one min. if available.

Minimum 8.5˚C temperature rise is normal condition.

Check the
power source
voltage.

Disconnect the
wire leads from
relay 2 and
check on and off
time with
multitester.

Measure the
output power.

Lower than 90% of
rating voltage.

Normal.

Abnormal.

Normal.

Abnormal.

Decrease in power
source voltage with
load.

Defective PCB
assembly.

Defective
magnetron.

Suggest customer
contact local electric
power utility co. or
qualified electrician.

Replace PCB
assembly.

Replace
magnetron.

5-17

(TROUBLE 5) No microwave oven operation even though oven lamp and fan motor run

(Display operates properly)

CONDITION CHECK RESULT CAUSE REMEDY

No microwave
oscillation.

Disconnect the
wire leads from
relay 2 and
check continuity
of relay2.
(Operate the unit)

Check high vol­tage transformer

Check high vol­tage capacitor

Check high vol­tage diode

No continuity.

Continuity.

Abnormal

Normal

Abnormal

Normal

Abnormal

Defective PCB
assembly

Defective high
voltage
transformer.

Defective high
voltage capacitor.

Defective high
voltage diode.

Replace PCB
assembly

Replace high
voltage
transformer.

Replace high
voltage capacitor.

Replace high
voltage diode.

Normal

Check
magnetron.

NOTE : • 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.

• When removing the magnetron, be sure to install the magnetron gasket in the correct position

and in good condition.

Output is full power
when you set lower
power level.

Disconnect the
wire leads from
relay 2 and check
continuity relay 2.
(Operate the unit)

Abnormal

Abnormal.

5-18

Defective
magnetron.

Defective PCB
assembly.

Replace
magnetron.

Replace PCB
assembly.

(TROUBLE 6) Oven does not operate convection cooking

CONDITION

Convection indicator lights
but oven does not go into
cook cycle when START key
is touched.

Temperature in the oven
cavity is lower or higher than
preset.

CAUSE

Defective circulation motor
wire ass'y.

Defective circulation
MOTOR.

Defective thermistor. Replace thermistor.

Defective Relay 4, 8.

Defective relay 3, 4 or
relay 8.

Defective convection heater
element.

Defective grill heater
element.

Check and repair C-Motor
wire ass'y.

Check and replace
C-Motor.

Test procedure relay 4, 8 of
P.C.B.

Test procedure relay 3, 4 or
relay 8 of P.C.B.

Test procedure convection
heater.

Test procedure grill heater.

REMEDY

Defective circulation Motor.

Defective or disconnected
thermistor.

Defective DAMPER of
Airduct

Test or replace circulation
motor.

Test or replace thermistor.

Check or Repair Damper
Motor and Micro switch.

5-19

DOOR PARTS

CONTROL PANEL PARTS

LATCH BOARD PARTS

BASE PARTS

INTERIOR PARTS

OVEN CAVITY PARTS

#EV#

EXPLODED VIEW

INTRODUCTION

6-1

W105

1013

1005

1004

1000

1008

1381

1009

1007

1006

#EV#

DOOR PARTS

6-2

2004

2381

2006

W106

#EV#

CONTROL PANEL PARTS

6-3

3001

W108

W107

W119

3002

3008

W105

3009

3012

3000

3022

3044

3048

3018

W103

3205

W181

3203

3014

3204

3202

WNZ015

#EV#

OVEN CAVITY PARTS

6-4

W102

4000

4001

4002

4004

4003

4002

W117

4002

W109

W109

W105

5015

5006

5045

5028

3049

5020

#EV#

LARCH BOARD PARTS

6-5

W102

W101

5014

5009

W101

W109

5018

W140

5002

5000

5001

5010

W140

3006

5041

5012

5003

5007

W146

5046

W108

5408

5405

5021

W121

5401

5413

5406

3036

W121

5404

W123

W182

W125

W141

W124

5019

3013

W132

3207

3206

5403

5407

3208

5402

W140

#EV#

INTERIOR PARTS

6-6

6001

5008

6000

6007

W108

W101

#EV#

BASE PLATE PARTS

6-7

5011

3021

W108

W104

#EV#

SENSOR PARTS

6-8

Part Reference list

Rev .2 Feb 17, 2006

Model : MCDS

LOC.

NO.

*01 MANUAL,OWNERS 3828W5A4675 R
*02 MANUAL,SERVICE 3828W5S6265 R
*05-1 LABEL,COOKING GUIDE 3850W1D172A R
*05-2 LABEL,COOKING GUIDE - 3850W1D172B R ADD
*10 BOX,YELLOW 3890W2Y319A R
1000 DOOR FRAME ASSEMBLY 3213W0A002C R
1004 CHOKE COVER 3552W0A002A R
1005 DOOR ASSEMBLY 3581W1A520R R
1006 LATCH 4026W2A015A R
1007 SPRING 4970WRA001F R
1008 GLASS 4890W1A007U R
1009 HANDLE,DOOR 3650W1A040B R
1013 CAP,CHOKE COVER 5006W3A017A R
1381 PANEL ASSEMBLY,DOOR 3551W1A021A R
2004 CONTROLLER ASSEMBLY,KEY PAD 4781W1M296E R
2006 PWB(PCB) ASSEMBLY,SUB 6871W2S155E R
2381 SERVICE PARTS(PANEL+COVER+KEY PAD) 383EW5A021K R
3000 CANOPY,MICA 3052W3M022A R
3001 OUT CASE,U-BENDING 3112W0U036G R
3002 TRAY,GLASS 1B71961E R 1B71961A
3006 HOLDER,WIRE 4B72944B R
3008 ROTATING RING ASSEMBLY 5889W2A017A R
3009 MOTOR(CIRC),SYNCHRONOUS 6549W1S013A R
3012 SHAFT,TURN TABLE 4370W3A001A R
3013 COVER,BACK 3550W1A090A R
3014 HARNESS 6877W1A239B R
3018 SHELF 5026W1A035D R
3021 AIR TUNNEL 5264W1A015E R
3022 HEATER ASSEMBLY 5301W2A034M R
3036 SUPPORTER 4930W3A014A R
3044 TRAY,METAL 3390W2P002F R
3048 SHELF 5026W1A035F R
3049 MOTOR(CIRC),SYNCHRONOUS 6549WRS001P R 6549W1S003E
3202 COVER,HEATER 3550W2A076A R
3203 HEATER,MIRACLON 5300W2A006Z R 5300W2A006M
3204 BRACKET,HEATER 4810W3G082A R
3205 BRACKET,HEATER 4810W4G066A R
3206 BRACKET,HEATER 4810W3H003A R
3207 BRACKET,HEATER 4810W3H002A R
3208 BRACKET,HEATER 4810W3H004A R
4000 BOARD,LATCH 3500W1A013A R
4001 BOARD ASSEMBLY,LATCH 3501W1A019A R
4002 SWITCH,MICRO 6600W1K001D R 3B73362E
4002 SWITCH,MICRO 6600W1K001D R 3B73362E
4002 SWITCH,MICRO 6600W1K001D R 6600W1K004C
4003 SWITCH,MICRO 6600W1K001C R 3B73361D
4003 SWITCH,MICRO 6600W1K001C R 6600W1K004B
4004 LEVER 4510W4A005A R
5000 CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B R 6120WRH001G
5000 CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B R 0CZZW1H003H

DESCRIPTION SVC ALTERNATE REMARK

DIFFERENCE CHART(PART NO)
Before(Rev.1) After(Rev.2)

Rev .1 Dec 23, 2005

7-1

LOC.

NO.

5000 CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B R 6120W3H003H
5000 CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B R 0CZZW1H002H
5000 CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B R 0CZZW1H001Q
5001 FUSE,DRAWING 3B74133K R 3B74133H
5002 BRACKET,CAPACITOR 4810W4C003A R
5003 GUIDE,SUCTION 4974W1S046A R
5006 DUCT 3550W1A093A R
5007 FAN 2B72279B R
5008 TRANSFORMER,HIGH VOLTAGE 6170W1D023J R 6170W1D050W
5009 MAGNETRON 6324W1A001B R
5010 POWER CORD ASSEMBLY 6411W1A018L R 6411W2A002Z
5011 SENSOR ASSEMBLY 6501W1A004A R
5012 MOTOR(CIRC),FAN 6549W2F017N R
5014 HARNESS 6877W1A302A R
5015 LAMP,DRAWING 6912W3B002E R
5018 CABLE ASSEMBLY 6851W1A001C R
5019 HARNESS 6877W2A002A R
5020 THERMOSTAT 6930W1A002C R 6930WRT003A
5020 THERMOSTAT 6930W1A002C R 6930W1A003G
5021 THERMISTOR,NTC 6322W2A001A R
5028 BRACKET,DAMPER 4810W2U002A R
5041 FILTER ASSEMBLY(CIRC) 6201W2A018A R
5045 COVER,LAMP 3550W3L001A R
5046 FILTER ASSEMBLY(CIRC) 6201W2A019A R 6201W2A019G
5401 CHAMBER 3300W1G087A R
5402 GLASS WOOL 5290W1A001B R
5403 HEATER,SHEATH 5300W1S006A 5300W1S006G R Change
5404 MOTOR(CIRC),CIRCULATION 2B72066G R
5405 BRACKET,MOTOR 3B72717A R
5406 RING 4B73725A R
5407 FAN 5900W3A004B R
5408 FAN 3B72559A R
5413 CHAMBER 3300W1G088A R
6000 BASE PLATE 3302W0A022A R
6001 BASE PLATE ASSEMBLY 3303W1A045B R 3303W1A045C
6007 CAP,BASE PLATE 5006W3A016B R
W101 SCREW TAP TITE(S),BINDING HEAD 1SBF0402418 R
W102 SCREW,DRAWING 4B70188C R
W103 SCREW,DRAWING 1SZZW2A002A R
W104 SCREW TAPPING,PAN HEAD 1TPL0302018 R
W105 SCREW TAPPING,PAN HEAD 1TPL0402418 R
W106 SCREW TAPPING,PAN HEAD 1TPL0402818 R
W107 SCREW TAPPING,TRUSS HEAD 1TTL0402416 R
W108 SCREW TAPPING,TRUSS HEAD 1TTL0402418 R
W109 SCREW TAPPING,TRUSS HEAD 1TTL0402818 R
W117 SCREW TAPPING,PAN HEAD 1TPL0303118 R
W119 SCREW TAPPING,TRUSS HEAD 1TTG0402632 R
W121 SCREW TAPPING,TRUSS HEAD 1TTL0402422 R
W123 NUT,HEXAGON 1NHA0400018 R
W124 WASHER,SPRING LOCK 1WSD0400032 R

DESCRIPTION SVC ALTERNATE REMARK

DIFFERENCE CHART(PART NO)
Before(Rev.1) After(Rev.2)

7-2

LOC.

NO.

W125 NUT,HEXAGON 1NHA0400032 R
W132 SCREW MACHINE,TRUSS HEAD 1MTC0402432 R
W140 SCREW,DRAWING - 4000W4A003A R ADD
W141 WASHER,PLAIN 1WPL0500032 R
W146 SCREW TAPPING,TRUSS HEAD 1TTL0403418 R
W155 SCREW,DRAWING 1SZZW2A002D R
W177 NUT,DRAWING 4B71028B R
W181 SCREW,DRAWING 4000W4A001B R
W182 SCREW,DRAWING 4000W4A001A R

DESCRIPTION SVC ALTERNATE REMARK

DIFFERENCE CHART(PART NO)
Before(Rev.1) After(Rev.2)

7-3

P/NO : 3828W5S6265

December, 2005

Printed in Korea