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R-734 - 25

1. CARRY OUT 3D CHECKS.
2. Disconnect the filament leads and high voltage wire of

high voltage transformer from high voltage capacitor
and the magnetron.

3. Disconnect the main wire harness from the high volt-

age transformer.

4. Remove the two (2) screws and one (1) washer holding

the transformer to the base plate.

5. Remove the transformer.
6. Now the high voltage transformer is free.

1. CARRY OUT 3D CHECKS.
2. Disconnect the H.V. wire B and filament lead of the

transformer from the magnetron.

3. Remove the one (1) screw holding the chassis support

to the magnetron.

4. Move the air intake duct to left.
5. Carefully remove four (4) screws holding the magnetron

to the waveguide, when removing the screws hold the

magnetron to prevent it from falling.

6. Remove the magnetron from the waveguide with care

so the magnetron antenna is not hit by any metal object
around the antenna.

CAUTION: WHEN REPLACING THE MAGNETRON,

BE SURE THE R.F. GASKET IS IN PLACE
AND THE MAGNETRON MOUNTING
SCREWS ARE TIGHTENED SECURELY.

5. Remove the four (4) screws holding the control unit to

the control panel frame.

6. Remove the rotary knob from the control unit.
7. Now, the control unit is free.
8. Remove the four (4) screws holding the switch unit to

the control panel frame.

9. Now, switch unit is free.

1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads and the connectors from the

control unit.

3. Lift up the control panel assembly and pull it forward.

Now the control panel assembly is free.

Switch unit
4. Disconnect the connector CN-G from the control unit.

1. CARRY OUT 3D CHECKS.
2. Push the lever of positive lock

®

 connector.

3. Pull down on the positive lock

®

 connector.

CAUTION: WHEN YOU (SERVICE ENGNEERS) CON-

NECT THE POSITIVE LOCK

®

 CONNEC-

TORS TO THE TERMINALS, CONNECT
THE POSITIVE LOCK

®

 SO THAT THE LE-

VER FACES YOU.

7. Remove the high voltage capacitor from the capacitor

holder.

8. Disconnect the high voltage rectifier assembly from

the high voltage capacitor.

9. Now, the high voltage rectifier assembly and the high

voltage capacitor should be free.

CAUTION: WHEN REPLACING HIGH VOLTAGE

RECTIFIER ASSEMBLY, ENSURE THAT
THE CATHODE (EARTH) CONNECTION
IS SECURELY FIXED TO THE CAPACI-
TOR HOLDER WITH AN EARTHING
SCREW.

1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the noise filter to the

chassis support.

3. Release the noise filter from the tabs of the fan duct.
4. Remove the two (2) screws holding the chassis sup-

port to the oven cavity front flange and the magnetron.

5. Remove the chassis support from the oven cavity.
6. Disconnect the wire leads from the fan motor.
7. Remove the one (1) screw holding the capacitor holder

to the oven cavity back plate.

8. Remove the one (1) screw holding the fan duct to the

oven cavity back plate.

9. Release the tabs of the capacitor holder from the fan

duct.

10.Remove the fan duct from the oven.
11.Remove the fan blade from the fan motor shaft accord-

ing to the following procedure.
1) Hold the edge of the rotor of the fan motor by using

a pair of groove joint pliers.

Terminal

Push

Pull down

1

2

Lever

Positive lock®

connector

R-734 - 26

2) Remove the fan blade assembly from the shaft of

the fan motor by pulling and rotating the fan blade
with your hand.

3) Now, the fan blade is free.

12.Remove the two (2) screws holding the fan motor to the

fan duct.

13.Now, the fan motor is free.

1. Install the the fan motor to the fan duct with the two (2)

screws.

2. Install the fan blade to the fan motor shaft according to

the following procedure.

1)

Hold the centre of the bracket which supports the
shaft of the fan motor on a flat table.

2)

Apply the screw lock tight into the hole  (for shaft) of
the fan blade.

3)

Install the fan blade to the shaft of fan motor by
pushing the fan blade with a small, light weight, ball
peen hammer or rubber mallet.

3. Insert the tabs of the capacitor holder to the fan duct.
4. Install the fan duct to the oven cavity back plate with the

one (1) screw.

5. Install the capacitor holder to the oven cavity back plate

with the one (1) screw.

6. Re-install the chassis support to the oven cavity and

the magnetron with the two (2) screws.

7. Install the noise filter to the fan duct and the chassis

support with the one (1) screw.

8. Re-connect the wire leads to the fan motor.

Removal
1. Disconnect the oven from the power supply.
2. Remove the turntable from the oven cavity.
3. Turn the oven over.
4. Cut the four (4) bridges holding the turntable motor

cover to the base plate with cutting pliers as shown in
Figure C-2(a).

CAUTION:
WHERE THE CORNERS HAVE BEEN SNIPPED OFF
BEND CORNER AREAS FLAT. NO SHARP EDGE MUST
BE EVIDENT AFTER REMOVAL OF TT MOTOR COVER.
DO NOT DROP THE TURNTABLE MOTOR COVER
INTO THE OVEN AFTER CUTTING THE BRIDGES.
BECAUSE IT WILL DAMAGE THE WIRE LEADS OF THE
MOTOR AND IT IS DIFFICULT TO REMOVE IT OUT OF
THE OVEN.
5. Remove the turntable motor cover from the base plate.
6. Disconnect the wire leads from the turntable motor.
7. Remove the one (1) screw holding the turntable motor

to the turntable motor angle.

8. Remove the turntable motor from the turntable motor

angle. Now, the turntable motor is free.

Re-install
1. Remove the any sharp edges on the turntable motor

cover and the base plate with the cutting pliers.

2. Re-install turntable motor by locating shaft onto turnta-

ble motor shaft to the turntable motor angle with the
one (1) screw.

3. Re-connect the wire leads to the turntable motor.
4. Insert the two (2) tabs of the turntable motor cover into

the slits of the base plate as shown in Figure C-2(b).

5. Re-install the turntable motor cover to the base plate

with the screw (LX-EZA045WRE0) as shown in Figure
C-2(b).

Gap

Rotor

Bracket

Stator

Groove joint pliers

Coil

Shaft

Axis

Stator

Rotor

These are the positions 
that should be pinched 
with pliers.

Shaft

Table

Center of
bracket

Cutting pliers

Bridges

Bridges

Turntable motor 
cover

Screw; 
LX-EZA045WRE0 

Turntable motor cover

Base plate  

Tabs 

Slits 

R-734 - 27

1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the green/yellow

wire to the cavity back plate.

3. Disconnect the leads of the power supply cord from the

noise filter, referring to the Figure C-4(a).

4. Release the power supply cord from the rear cabinet.
5. Now, the power supply cord is free.

1. Insert the moulding cord stopper of power supply cord

into the square hole of the power angle, referring to the
Figure C-4(b).

2. Install the earth wire lead of power supply cord to the

oven cavity with one (1) screw and tight the screw.

3. Connect the brown and blue wire leads of power supply

cord to the noise filter correctly, referring to the Pictorial
Diagram.

1. CARRY OUT 3D CHECKS.
2. Remove the wire leads as Positive lock

®

 connector

removal above.

3. Lift up the oven lamp from its retaining clips.
4. Now, the oven lamp is free.

1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the exhaust duct to

the oven cavity.

3. Remove the exhaust duct from the oven cavity.
4. Remove the two (2) screws holding the two (2) termi-

nals of the main wire harness to the grill heating
element.

5. Remove the two (2) screws holding the two (2) grill

heater angles to the top of the oven cavity.

6. Remove the two (2) grill heater angles from the oven

cavity.

7. Remove the grill heating element from the top of the

oven cavity.

8. Now the grill heating element is free.

Lock

Bulb

Power supply cord

Green/ Yellow
wire

Brown wire

Oven cavity back plate 

Blue wire

Noise filter

Screw

L

TP

F F2

TL

RED

F1

WHT

N

POWER
SUPPLY CORD

MOULDING
CORD STOPPER

OVEN CAVITY
BACK PLATE

SQUARE HOLE

1. Remove the turntable motor, refer to "Turntable Motor

Removal".

2. Pull the coupling out of the hole in the oven cavity.
3. At that time the turntable coupling will be free.

CAUTION: REPLACE THE PACKING AT THE SAME

TIME WHEN REPLACING THE COU-
PLING. BECAUSE THE PACKING MAY
BE DAMAGED WHEN THE COUPLIN IS
PULLED.

Packing

T.T.M. support
angle

Coupling

R-734 - 28

If the monitored latch switch, stop switch and monitor
switch do not operate properly due to a mis-adjustment,
the following adjustment should be made.
1. CARRY OUT 3D CHECKS.
2. Loosen the two (2) screws holding the latch hook to

the oven cavity front flange.

3. With the door closed, adjust the latch hook by moving

it back and forward, or up and down. In and out play of
the door allowed by the latch hook should be less than
0.5 mm. The horizontal position of the latch hook
should be placed where the monitor switch has acti-
vated with the door closed. The vertical position of the
latch hook should be placed where the monitored latch
switch and stop switch have activated with the door
closed.

4. Secure the screws with washers firmly.
5. Make sure of the monitored latch switch, stop switch

and monitor switch operation. If those switches have
not activated with the door closed, repeat step 1 - 4.

1. In and out play of door remains less than 0.5 mm when

latched position. First check latch hook position, push-
ing and pulling upper position of the door toward the
oven face. The results (play of the door) should be less

than 0.5mm.

2. The contacts (COM-NO) of monitored latch switch and

stop switch interrupt the circuit before the door can be
opened.

3. The contacts (COM-NC) of the monitor switch close

when door is opened.

4. Re-install outer case and check for microwave leakage

around the door with an approved microwave survey
meter. (Refer to Microwave Measurement Procedure.)

1. CARRY OUT 3D CHECKS.
2. Pull the door handle to open the door.
3. Insert an putty knife (thickness of about 0.5mm) into the

gap between the choke cover and door frame as shown
in Figure C-8 to free engaging parts.

4. Release choke cover  from door panel.
5. Now choke cover is free.

1. CARRY OUT 3D CHECKS.
2. Remove the control panel assembly referring to "CON-

TROL PANEL ASSEMBLY REMOVAL".

3. Disconnect the leads from all switches.
5. Remove the two (2) screws holding the latch hook to

the oven cavity.

6. Remove the latch hook.
7. Push the retaining tab slightly and remove switch.
8. Now the switch(es) is free.

Door frame

Choke cover

Putty knife

Stop Switch
(SW3)

Monitor Switch
(SW2)

Monitored 
Latch Switch
(SW1)

Latch Hooks

Stop Switch
(SW3)

Monitor 
Switch
(SW2)
Monitored
Latch 
Switch
(SW1)