R-21ATP - Sharp Home Appliance Service Manual (repair manual). Page 26

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CHOKE COVER
1. Disconnect the oven from the power supply.
2. Open the oven door and wedge it open.
3. Insert a putty knife (thickness of about 0.5mm) into the

gap between the choke cover and door frame as
shown in Figure C-6 to free engaging parts.

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

in Figure C-6.

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

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

of upper and lower oven hinges by lifting up.

8. Now, door sub assembly is free from oven cavity.

DOOR PANEL REMOVAL
9. Remove the four (4) screws holding the door panel to

the door frame.

10.Release door panel from seven (7) tabs of door frame

by sliding door panel downward.

11.Now, the door panel is free.

DOOR HANDLE REMOVAL
12.Release the latch spring from the tab of the latch angle

assembly.

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

latch angle and the earth angle assembly through the
door frame.

14.Now, door handle is free.

LATCH HEADS REMOVAL
15.Remove the one (1) screw holding the latch angle

assembly to the door frame.

16.Remove the latch angle assembly together with the

latch lever, latch spring and the upper and lower latch
heads from the door frame.

17.Release the latch lever together with the latch spring

and the latch heads from the latch angle assembly.

18.Release the two (2) latch heads from the latch lever.
19.Now, the upper and lower latch heads are free.

FRONT DOOR GLASS OR SEALER PLATE REMOVAL
(After DOOR PANEL REMOVAL)
12.Remove the four (4) screws holding the glass stopper

U to the door frame and remove the glass stopper U.

13.Remove the two (2) screws holding the glass stopper

R to the door frame and remove the glass stopper R.

14.Slide the front door glass and the sealer plate left at first

and then slide upwards to release them from the tabs
holding them.

15.Now, the front door glass or the sealer plate is free.

DOOR CASE REMOVAL
(After DOOR PANEL REMOVAL)
12.Straighten all tabs of the door case holding the door

case to the door frame.

13.Release door case from the door frame.
17.Now, the door case is free

NOTE: At this moment, the door badge is attached on the

door case.

RE-INSTALL OF THE DOOR
1. Re-install all door parts except the choke cover.
2. Catch two (2) pins of door panel on two (2) holes of

upper and lower oven hinges.

3. Re-install choke cover to door panel by pushing.

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 Micro-
wave Measurement Procedure.)

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

an electronic seal preventing the leakage of micro-
wave energy from oven cavity during cook cycle. This
function does not require that the door be air-tight,
moisture (condensation)-tight or light-tight. There-
fore, occasional appearance of moisture, light or
sensing of gentle warm air movement around oven
door is not abnormal and do not in themselves indi-
cate a leakage of microwave energy from oven cavity.

Putty Knife

Door Frame

Choke Cover

Upper Oven
Hinge

Upper 
Oven
Hinge

Lower 
Oven
Hinge

Lower 
Oven
Hinge

Pin

Pin

Choke Cover

Door
Panel

Slit Choke