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1) Disconnect the leadwire from lamp and MGT

thermostat.

2) Remove the mounting screw to the magnetron.

1) Disconnect the leadwire from the high voltage

transformer and high voltage capacitor.

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/cm

2

.(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.
2) Remove the turntable shaft VERY CAREFULLY with

a slotted hand.

3) Lay the unit down on its back.
4) Remove the turntable motor cover. The turntable

base cover is easily removed by pinching the six parts
with a wire cutting.

5) Disconnect the leadwire from the turntable motor

terminals.

6) Remove the screw securing the turntable motor to the

oven cavity ASS'Y

7) After repairing the motor, rotate the removed turntable

motor cover.

8) Fit the turntable motor cover's projecting part to the

base plate slit.

NOTE:
1. Remove the wire lead from tne turntable motor VERY

CAREFULLY.

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

removing.

5-5

Wire Leads

Turntable Motor

Waveguide

Magnetron
Gasket

Magnetron

Dome

Waveguide
Bracket

Lamp

MGT
Themostst

Magnetron

Air Duct

1. Remove the Screw of the Back and in the Cavity.

2. Remove the Bracket Ass'y.

3. Remove the Joint-spring.

4. Remove the Gasket.

1. Remove the Screw of Back and Cavity on the Right.

2. Remove the H.M.MOTOR ASS'Y.

3. Remove the Gear.

4. Remove the Braket of Lower plate.

5. Remove the Gasket.

1. Remove the Screw of in the Cavity.

2. Remvoe the Bracket Ass'y.

3. Remove the ROTI-MOTOR.

5-6

Heater

Gasket

Joint-Spring

Cover

Terminal

Bracket Ass'y

Motor Ass'y

Bracket

Gasket

H. M. Motor Ass'y

Gear

S/W 1

S/W 2

Roti-Motor

1) Remove the control panel assembly from the

cavity.(Refer to control panel assembly removal on
previous page.)

2) Remove screws which hold the PCB SUB ASS'Y to

the control panel.

3) Disconnect the flat cable from the PCB SUB ASS'Y

and take off the PCB SUB ASS'Y.

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.

2) MOUNTING OF THE PRIMARY/MONITOR/

SECONDARY SWITCHS 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 the

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 0.5mm. (1/64 inch)
Don't push the door release button while making
adjustment. Make sure that the latch moves smoothly
after adjustment are completed and that the screws
are tight. Make sure the primary, monitor, and
secondary switch operate properly by following the
continuity test procedure.

5-7

PCB SUB ASSY

Control Panel

Key Membrane

Knob

Tact switch PCB

Dial

ADJUSTMENT
DIRECTION

MONITOR
SWITCH

PRIMARY
SWITCH

SECONDARY
SWITCH

H. V
DIODE

H. V. CAPACITOR

CIRCUIT PROTECTOR

H. V. TRANSFORVER

MAGNETRON

PRIMARY

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 swithces 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.

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 a closed circuit. When the secondary switch
operation is abnormal, make the necessary
adjustment or replace the switch only with the same
type of switch. 

Disconnect the wire lead from the monitor switch.
Connect the ohmmeter leads to the common (COM)
and normally closed (NO) 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.

5-8

SWITCHES

Check for continuity of the switch

(Wire leads removed)

with an Ohm-meter

Primary
Switch

Monitor
Switch

Secondary
Switch

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

connected correctly.

Door
open

Door
close

COM

NO

COM

NC

COM  

NO

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