Sharp R-320BB Service Manual page 33

REMOVAL
1. Disconnect the power supply cord.
2. Push the open button and open the door slightly.
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-7 to free engaging parts.
4. Pry the principles of the lever and lift up the choke cover
by inserting a putty knife as shown Figure C-7.
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 panel with door frame is free from oven cavity.
Choke Cover
Figure C-7. Door Disassembly
9. Release door panel from nine (9) tabs of door frame by
sliding door panel downward.
10.Now, door panel with sealer film is free.
11.Tear sealer film from door panel.
12.Now, door panel is free.
13.Slide latch head upward and remove it from door frame
with releasing latch spring from door frame and latch
head.
14.Now, latch head and latch spring are free.
15.Remove door screen from door frame as follows.
1) Turn the door frame over. Refer to Figure 1.
2) Push the upper right corner of the door screen by
your finger from the front side of the door frame. And
slide the door screen over the corner tab until the
upper and right edges of the door screen touch the
tabs of the door frame. Refer to Figure 2.
1
Door frame
Tabs
Tab
(Corner)
Tabs
Door
screen
View; back side of door frame
3) Turn the door frame back. Refer to Figure 3.
4) Push the lower right corner of the door screen by
your finger from the back side of the door frame. And
slide the door screen clockwise. Refer to Figure 3.
5) Pull out the door screen toward the lower right
corner of the door frame. Refer to Figure 4.
DOOR REPLACEMENT
Door Frame
Putty Knife
2
3
View; front side of door frame
16.Now, door screen is free.
RE-INSTALL
1. Re-install door screen to door frame by reversing the
procedure of item 15 of "REMOVAL".
2. 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.
3. Re-install door panel to door frame by fitting nine (9) tabs
of door frame to nine (9) holes of door panel.
4. Hold the door panel to the door frame by sliding the door
panel upward.
5. Put sealer film on door panel. Refer to "Sealer Film"
about how to handle new one.
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 door sensing switch and secondary
interlock 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.
31
R-320BB
R-320BK
R-320BW
4