Sharp R-244(B)M Service Manual Download Page 15

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R-244M - 15

REMOVAL
1. Disconnect the power supply cord.
2. Open the door slightly.
3. Remove the choke cover taking care not to break clips

by inserting an iron plate (thickness of about 0.5mm) or
flat type screw driver to the gap between the choke
cover and door panel as shown Figure C-4 to free the
engaged parts.

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

Figure C-4. Door Disassembly

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

upper and lower oven hinges by lifting up.

7. 1. Remove door assy by removing screws (4).
8. Release door panel from tabs of door frame and remove

door frame by sliding the door panel downward.

9. Now, door panel with inner sealer film is free.
10. Tear inner sealer film from door panel.
11. Now, door panel is free.
12. Slide latch head upward and remove it from door frame

with releasing latch spring from door frame and latch
head.

13. Now, latch head and latch spring are free.
14. Remove Glass Stopper Screw (noting position of

stopper) and slide stopper down while lifting up.

15.Slide glass towards Glass Stopper position and

then down towards the lower edge of the door
frame.

16. Lift upper edge of glass, which will now be free from

upper clips and remove from lower clips.

17.Refitting is a reversal of the above when refitting,

ensure the glass and the glass stopper is in the
original position.

RE-INSTALL
1. Re-install the outer door glass to the door frame with the

glass stopper.

2. Hold the glass stopper with the one (1) screw.
3. Re-install latch spring to the head. Re-install latch spring

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

4. Re-install door panel to door frame by fitting tabs of door

frame to holes of door panel.

5. Put sealer film on door panel. Refer to “Inner Sealer

Film” and figure C-6, on how to handle the new film.

6. Catch two (2) pins of door panel on two (2) hole of upper

and lower oven hinges.

7. Re-install choke cover to door panel by pushing.
Note: After any service to the door;
(A) Make sure that monitored latch switch, stop switch

and monitor switch are operating properly. (Refer
to chapter “Test Procedures”.).

(B) An approved microwave survey meter should be

used to assure compliance with proper microwave
radiation emission limitation standards.

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 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-5. Door Replacement

INNER SEALER FILM

NOTE: When carrying out any repair to the door,

do not bend or warp the slit choke (tabs on
the door panel assembly) to prevent
microwave leakage.

Installation
1. Tear away the backing film.
3. Put the pasted side of the inner sealer film on the door

panel.