R-21ATP - Sharp Home Appliance Service Manual (repair manual). Page 27

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1. Disconnect the oven from the power supply.
2. Open the oven door and wedge it open.
3. Make sure that the smooth surface of the ceramic shelf

face up.

4. Make sure that the rubber packing without a fin of the

ceramic shelf faces the front of the oven.

NOTE: The three (3) rubber packings with the fins and the

one (1) rubber packing without a fin are attached
to the four (4) edges of the ceramic shelf. The one
(1) rubber packing without a fin is the front edge of
the ceramic shelf.

5. Put the front edge of the ceramic shelf into the front

edge of the oven cavity bottom plate.

6. Push down the rear edge of the ceramic shelf into the

oven cavity bottom plate.

7. Now, the ceramic shelf is installed.

WARNING

Make sure that the rubber packing is not caught between
the oven door and the oven cavity front plate, to avoid
possible exposure to excessive microwave energy.

Rear Edge

Push

Front Edge

Ceramic 
Shelf

Oven Cavity

1. Disconnect the power supply cord.
2. Open the door and wedge the door open.
3. To discharge the high voltage capacitor, wait for 60

seconds.

4. Remove the antenna motor from the oven cavity bottom

plate, referring to "ANTENNA MOTOR REMOVAL" .

5. Remove the ceramic shelf from the oven cavity bottom

plate.

6. Remove the one (1) screw and the one (1) washer

holding the antenna holder of the stirrer antenna as-
sembly to the oven cavity bottom plate through the
square hole of the stirrer antenna. Refer to Figure C-8.

7. Release the antenna holder from the one (1) tab of  the

oven cavity bottom plate.

8. Remove the stirrer antenna assembly from the oven

cavity bottom plate.

9. Remove the antenna motor shaft from the hole of the

oven cavity bottom plate.

10.Now, the antenna motor shaft is free.

2. Set the direction of the stirrer antenna and antenna

holder so that the hole of the antenna holder fit to the
centre of the stirrer antenna's big blade. Refer to Figure
C-9.

3. Hook the hole of the antenna holder on the tab of the

oven cavity bottom plate. Refer to Figure C-10.

4. Insert the antenna holder into the hole of the oven

cavity bottom plate and fit the hole of the antenna
holder with an antenna motor shaft. Refer to Figure C-
10.

5. Install the antenna holder to  the oven cavity bottom

plate with the one (1) screw and the one (1) washer.
Refer to Figure C-8.

6. Install the antenna motor to the oven cavity bottom plate

with one (1) screw. Refer to Figure C-8.

7. Connect the wire leads to the antenna motor, referring

to the pictorial diagram.

8. Install the base plate cover to the base plate with one

(1) screw.

9. Install the ceramic shelf to the oven cavity bottom plate.

Refer to "INSTALLATION OF CERAMIC SHELF" .

Screw

Square 
hole

Screw

Antenna motor

Antenna 
motor shaft

Antenna holder

Stirrer antenna

Oven cavity
bottom plate

Tab

Washer

INSTALLATION
1. Install the antenna motor shaft into the hole of the oven

cavity bottom plate, and turn the flat faces of antenna
motor shaft to the left and right side walls of oven cavity
(to fit the stirrer antenna holder). Refer to Figure C-9.

Flat face

Flat face

To right wall 
of oven cavity

To left wall of 
oven cavity

Antenna 
motor shaft

Antenna holder

Stirrer antenna

Stirrer antenna's 
big blade

Centre

Hole