Sharp R-450H, Service Manual

R-450H

23

door panel upward.

5. Hold the door panel to the door frame with three (3)

screws.

6. 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.

7. Re-install choke cover  to door panel by pushing.
8. Catch two (2) pins of door panel on two (2) hole of upper

and lower oven hinges as shown Figure C-7.

9. Re-install the door stopper to the door assembly.

Note: After any service to the door;

(A) Make sure that 2nd. interlock relay control switch,

1st. latch 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-7. Door Replacement

SEALER FILM

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.

Figure C-8. Sealer film

Sealer film

Backing film

Adhesive tape

Pin

Pin

Upper oven hinge

Lower 
oven
hinge

Lower 
oven hinge

Door
stopper

Choke 
cover

Door 
assembly