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19

2. Re-install the magnetron to waveguide flange with the

four (4) screws.

3. Re-install the oven cavity assembly to the base plate.

Refer to "OVEN CAVITY ASSEMBLY REMOVAL".

4. Reconnect the wire leads to the magnetron and thermal

cut-out (MG).  Refer to "PICTORIAL DIAGRAM".

REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.

Refer to "OVEN CAVITY ASSEMBLY REMOVAL".

4. Disconnect the wire leads from the fan motor.
5. Release the main wire harness and the switch harness

from the holes of the fan duct.

6. Remove each one (1) screw  holding the separate

angles A, B  and C to the base plate. And remove them
from base plate.

7. Remove two (2) screws  holding the fan duct to the

base plate. And remove it from the base plate.

8. Remove the fan blade from the fan motor shaft according

to the following procedure.

9. Hold the edge of the rotor of the fan motor by using a

pair of groove joint pliers.

10.Remove the fan blade from the shaft of the fan motor

by pulling and rotating the fan blade with your hand.

11. Now, the fan blade will be free.
CAUTION:
*

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

fan duct.

13.Now, the fan motor is free.

5. Re-install outer case and check that the oven is

operating properly.

CAUTION: WHEN REPLACING MAGNETRON, BE

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

1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Disconnect the wire leads from the oven lamp.
4. Remove the one (1) screw holding the oven lamp to the

lamp angle.

5. Remove the oven lamp from the lamp angle.
6. Now, the oven lamp is free.

14.Another fan motor can be removed in a same way.

INSTALLATION
1. Install 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.

3. Hold the center of the bracket which supports the shaft

of the fan motor on the flat table.

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

fan blade.

5. 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.

6. Catch two holes of fan duct on two tabs of the base

plate.

7. Hold the fan duct assembly to the base plate with the

two (2) screws.

8. Re-install the separete angles A, B and C to the base

plate with each one (1) screw.

9. Insert the main wire harness and switch harness into

the holes and switch harness of the fan duct.

10.Connect the wire leads to the fan motor. Referre to

"PICTORIAL DIAGRAM".

11.Re-install the oven cavity assembly to the base plate.

Refere to "OVEN CAVITY ASSEMBLY REMOVAL".

12.Reconnect all wire leads removed from components.

Referre to "PICTORIAL DIAGRAM".

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

20

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

power unit.

4. Remove two (2) screws holding power unit to the base

plate.

5. With needle nose pliers, nip and push the head of the

two (2) PC support clips which hold the power unit.
And then release the clips from the hole of the power

unit.

6. Now the power unit is free.

1. CARRY OUT 3D CHECKS.
2. Remove the turntable and turntable support from oven

cavity.

3. Lay the oven on it's backside. Remove the turntable

motor cover by snipping off the material in four corners.

4. Where the corners have been snipped off bend corner

areas flat.

5. Disconnect wire leads from turntable motor.

(See "Positive lock connector removal")

6. Remove two (2) screws holding turntable motor to

oven cavity.

7. Remove the TTM packing from the turntable motor

shaft.

8. Now the turntable motor is free.
9. After replacement use the one (1) screw to fit the

turntable motor cover.

CAUTION: NO SHARP EDGES MUST BE EVIDENT

AFTER REMOVAL OF THE TURNTABLE
MOTOR COVER.

Terminal

Push

Pull down

1

2

Lever

Positive lock®

connector

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

®

 connector.

4. Pull down on the positive lock

®

 connector.

CAUTION: WHEN CONNECTING THE POSITIVE LOCK

®

CONNECTORS TO THE TERMINALS, CON-
NECT THE POSITIVE LOCK

®

 SO THAT THE

LEVER FACES YOU.

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

wire to the bottom plate.

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

noise filter.

5. Release the moulding cord stopper of the power supply

cord from the square hole of the oven cavity back plate,
referring to the Figure C-3 (b).

6. Now, the power supply cord is free.

1. Insert the moulding cord stopper of power supply cord

into the square hole of the rear cabinet, referring to the
Figure C-3 (b).

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

bottom plate with one (1) screw and tight the screw.

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

cord to the main wire harness correctly, referring to the
Pictorial Diagram.

4. Re-install outer case and check that the oven is

operating properly.

Needle nose pliers

Power unit

PC support clip

Power Supply 
Cord

Oven Cavity 
Back Plate

Square 
Hole

Moulding
Cord Stopper

Power supply 
cord

Brown wire

Noise Filter

Screw

Blue wire

Base plate

Green/Yellow

wire

21

1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Disconnect the wire leads from the switches.
4. Push outward on the one (1) retaining tabs holding

switch in place.

5. The switch is now free.
Reinstallation
1. Re-install each switch in its place. The 1st. interlock

switch is in the lower position and the 2nd interlock
relay control switch is in the upper position. The monitor
switch is in the middle position of the latch hook.

2. Re-connect wire leads to each switch.

Refer to pictorial diagram.

3. Make sure that the monitor switch is operating properly

and check continuity of the monitor circuit. Refer to
chapter "Test Procedure" and Adjustment procedure.

1. CARRY OUT 3D CHECKS.
2. Remove the outer case.

If the 1st. interlock switch, 2nd. interlock relay control
switch  and monitor switch do not operate properly due to
a misadjustment, the following adjustment should be made.
3. Loosen the two (2) screws holding latch hook to the

oven cavity front flange.

4. With door closed, adjust latch hook by moving it back

and forth, and up and down. In and out play of the door
allowed by the upper and lower position of the latch
hook should be less than 0.5mm. The vertical position
of the latch hook should be adjusted so that the 1st.
interlock switch and 2nd. interlock relay control switch
are activated with the door closed. The horizontal
position of the latch hook should be adjusted so that the
plunger of the monitor switch is pressed with the door
closed.

5. Secure the screws with washers firmly.
6. Check the operation of all switches. If each switch has

not activated with the door closed, loosen screw and
adjust the latch hook position.

After adjustment, check the following.
1. In and out play of door remains less than 0.5mm when

in the latched position. First check upper position of
latch hook, pushing and pulling upper portion of door
toward the oven face. Then check lower portion of the

latch hook, pushing and pulling lower portion of the
door toward the oven face. Both results (play in the
door) should be less than 0.5mm.

2. The contacts of 1st. interlock switch and 2nd. interlock

relay control switch open within 1.6mm gap between
right side of cavity face plate and door when door is
open.

3. Monitor switch contacts close when door is opened.
4. Re-install outer case and check for microwave leakage

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

REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the two (2) screws holding the front leg to the

base plate.

4. Remove the front leg from the oven cavity by releasing

the three (3) tabs.

5. Remove the harness cover from the front leg.
6. Disconnect the 7-pin wire harness from the power

unit on the base plate.

7. Insert a putty knife (thickness of about 0.5mm) into the

gap between the choke cover and door frame as shown
in Figure C-5 to free engaging parts.

8. Pry the choke cover by inserting a putty knife as shown

Figure C-5.

9. Release choke cover  from door panel.
10.Now choke cover is free.

11.Release two (2) pins of door panel from two (2) holes

of upper and lower oven hinges by lifting up.

Latch 
Heads

Door

Latch Hook

2nd. Interlock
Relay Control 
Switch

1st. Interlock
 Switch

Monitor Switch

Choke Cover

Door Frame

Putty Knife

22

Sealer film

Backing film

Adhesive tape

microwave energy from oven cavity during cook
cycle. This function does not require that door be
air-tight, moisture (condensation)-tight or light-tight.
Therefore, occasional appearance of moisture, light
or sensing of gentle warm air movement around
oven door is not abnormal and do not of themselves
indicate a leakage of microwave energy from oven
cavity.

12.With pulling out the 7-pin wire harness from the hole of

the oven cavity front plate, remove the door from the
oven cavity.

13.Now, the door is free from the oven cavity.

REINSTALLATION
1. Re-install the front leg to the oven cavity front plate.
2. Hold the front leg to the base plate with (2) screws.
3. Insert the 7-pin wire harness to the holes of the front leg

and the oven cavity front plate.

4. Catch two (2) pins of door panel on two (2) holes of

upper and lower oven hinges.

5. Re-install choke cover  to door panel by pushing.
6. Connect the 7-pin wire harness to the power unit on the

base plate.

7. Re-install the harness cover to the front leg.
8. Now the door is installed.

After any service, make sure of the following :
1. Door latch heads smoothly catch latch hook through

latch holes and that latch head goes through center of
latch hole.

2. Deviation of door alignment from horizontal line of

cavity face plate is to be less than 1.0mm.

3. Door is positioned with its face pressed toward cavity

face plate.

4. Check for microwave leakage around door with an

approved microwave survey meter.  (Refer to Microwave
Measurement Procedure.)

Note: The door on a microwave oven is designed to act

as an electronic seal preventing the leakage of

Installation
1. Put the adhesive tape on the backing film of the sealer

film as shown in Fig. C-8.

2. Tear the backing film by pulling the adhesive tape.
3. Put the pasted side of the sealer film on the door panel.

DOOR PANEL
1. CARRY OUT 3D CHECKS.
2. Remove the door from the oven. Refer to "DOOR

REPLACEMENT".

3. The choke cover should have been removed.
4. Remove the four (4) screws holding the door panel to

the door screen.

5. Now, door panel is free.

LATCH HEAD AND LATCH SPRING
6. Slide the latch head and remove it from the door

frame assembly with releasing the latch spring from
the door frame assembly and the latch head.

7. Now, the latch head and the latch spring are free.

CPU UNIT
6. Remove the two (2) screws holding the PWB cover to

the door frame assembly.

7. Remove the PWB cover from the door frame assembly.
8. Remove the one (1) screw holding the CPU unit to the

door frame assembly.

9. Releasing the two (2) tabs, remove the CPU unit with

the LCD holder from the door frame assembly.

10.Releasing the two (2) tabs, release the LCD from the

LCD  holder.

11.Releasing the four (4) tabs, remove the LCD holder

from the CPU unit.

12.Disconnect the 7-pin wire harness from the CPU unit.

Pin

Pin

Upper oven
hinge

Upper 
oven hinge

Lower 
oven hinge

Lower 
oven hinge

Choke cover

Slit choke of
door panel

Door frame
assembly

Door frame

Front leg

Front leg

7-pin wire 
harness

7-pin wire 
harness

Power unit

Base plate

Hole

Hole

Door