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R98STMAA

11 – 5

1. Insert the moulding cord stopper of power supply cord into the

square hole of the power angle, referring to the Figure C-5(b).

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

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.

Figure C-5(b). Power Supply Cord Replacement

1. CARRY OUT 3D CHECKS.

2. Disconnect wire leads from the thermal cut-out (GRILL).

3. Remove the two (2)screws holding the two (2) terminals of the main

wire harness to the two (2) grill heating elements.

4. Remove the one (1) screw holding the exhaust duct to the oven

cavity top plate. 

5. Remove the exhaust duct from the oven cavity top plate.

6. By pushing the two (2) tabs holding the grill reflector to the oven

cavity top plate, slide the grill reflector toward the magnetron. And
then lift up the grill reflector and remove it.

7. Remove the one (1) screw holding the grill heater angle to the grill

heater reflector. 

8. Straighten the two (2) tabs of the grill heater angle and remove the

grill heater angle from the grill reflector.

9. Remove the two (2) screws holding the earth plate to the two (2)

grill heating elements.

10.Remove the two (2) grill heating elements from the grill reflector.

11.Now, the grill heating elements are free.

1. CARRY OUT 3D CHECKS.

2. Remove the control panel assembly referring to “CONTROL

PANEL ASSEMBLY REMOVAL”.

3. Disconnect the leads from all switches.

4. Remove the two (2) screws holding the latch hook to the oven cav-

ity.

5. Remove the latch hook.

6. Remove the switch(es) from the latch hook by pushing the retaining

tab backwards slightly and turning the switch(es) on the post.

7. Now the switch(es) is free

Figure C-6. Switches

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 activated 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 all switches operation. If the latch head has not

pushed the plungers of the monitor switch with door closed, adjust
the latch hook position. At that time, the latch head should have
pushed the plungers of the monitored latch switch and stop switch.
If the latch head has not pushed the plungers of the monitored latch
switch and stop switch with door closed, loose two (2) screws hold-
ing latch hook to oven cavity front flange and adjust the latch hook
position.

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

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

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

switch open within 1.8mm gap between right side of cavity face
plate and door when door is opened.

Power supply cord

Back plate

Moulding cord stopper

Square hole

Stop switch

Monitor switch

Monitored
latch switch

Tab

Post

Post

R98STMAA

11 – 6

3. When the door is closed, the contacts (COM-NO) of the stop switch

close. 

4. When the door is closed the contacts (COM-NC) of the monitor

switch and monitored latch switch open. And the contacts (COM-
NO) of their switches close.

5. Re-install outer case and check for microwave leakage around the

door with an approved microwave survey meter. (Refer to Micro-
wave Measurement Procedure.)

Figure C-7 Latch Switches Adjustment

1. Disconnect the oven from the power supply.

2. Push the door slightly.

3. Remove the door stopper from the choke cover.

4. Lift the door upwards.

5. Now, door assembly is free from oven cavity.

6. Insert an putty knife (thickness of about 0.5mm) into the gap

between the choke cover and door frame as shown in Figure C-7 to
free engaging parts.

7. Release choke cover from door panel.

8. Now choke cover is free. 

Figure C-7. Door Disassembly

9. Remove the six (6) screws holding the door panel to the door

frame.

10.Now, door panel is free.

CAUTION: DO NOT DEFORM OR WARP THE TEETH OF COMB OF

THE DOOR PANEL TO PREVENT MICROWAVE RADIA-
TION EMISSION FROM THE DOOR.

LATCH HEAD AND SPRING

11.Slide latch head upward and remove it from door frame with releas-

ing latch spring from door frame and latch head.

12.Now, latch head and latch spring are free.

DOOR HANDLE AND FRONT DOOR GLASS

13.Remove the two (2) screws holding the door handle and the glass

stopper to the door frame.

14.Remove the door handle and the glass stopper from the door

frame.

15.Slide the front door glass leftward and then slide downwards to

release the tabs holding it.

16.Now, the front door glass is free

1. Re-install the front door glass to the door frame as follows.

1) Insert the upper edge of the front door glass into the tabs of the

door frame.

2) Slide the front door glass downwards and insert the lower edge

of the front door glass into the tabs of the door frame.

3) Slide the front door glass rightwards and insert the right edge of

the front door glass into the tabs of the door frame.

2. Re-install the door handle and the glass stopper to the door frame

as follows.

1) Insert the door handle and the glass stopper to the door frame.

2) Hold the door handle and the glass stopper to the door frame

with the two (2) screws.

3. Re-install the latch spring to the latch head. Re-install the latch

spring to the door frame. Re-install latch head to door frame.

4. Re-install door panel to door frame.

5. Hold the door panel to the door frame with six (6) screws.

6. Re-install choke cover to door panel by clipping into position.

7. Locate door panel hinge pins into cavity hinge location holes.

8. Re-install the door stopper to the chock cover.

NOTE: After any service to the door;

1) Make sure that the monitor switch, monitored latch

2) An approved microwave survey meter should be used

Latch hook

Door

Stop switch

Latch
Heads

Monitor switch

Monitored
latch switch

Tab

Putty knife

Choke cover

Door frame

Door stopper

R98STMAA

11 – 7

1. Door latch heads smoothly catch latch hook through latch holes

and that latch head goes through centre 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 micro-

wave survey meter. (Refer to Microwave Measurement Procedure.)

NOTE: The door on a microwave oven is designed to act as an elec-

tronic seal preventing the leakage of 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.

           Figure C-8. Door Replacement

Upper oven hinge

Lower oven
hinge

Lower

oven

hinge

Pin

Door
assembly

Pin

R98STMAA

11 – 7

1. Door latch heads smoothly catch latch hook through latch holes

and that latch head goes through centre 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 micro-

wave survey meter. (Refer to Microwave Measurement Procedure.)

NOTE: The door on a microwave oven is designed to act as an elec-

tronic seal preventing the leakage of 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.

           Figure C-8. Door Replacement

Upper oven hinge

Lower oven
hinge

Lower

oven

hinge

Pin

Door
assembly

Pin