Sharp R-22AT Service Manual Download

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R - 2 2 A T
R-23AM
R - 2 4 A T

around door with an approved microwave survey me-
ter. (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 mois-

ture, light or sensing of gentle warm air movement
around oven door is not abnormal and do not of
themselves, indicate a leakage of microwave en-
ergy from oven cavity. If such were the case, your
oven could not be equipped with a vent, the very
purpose of which is to exhaust the vapor-laden air
from the oven cavity.

CHOKE COVER REMOVAL

1. Open the door and insert a putty knife (thickness of

about 0.5mm) in gap between the choke cover and
corner portion of door panel to free engaging parts.
Refer to Fig. C-7.

NOTE: As the choke cover and door panel are engage at

16 places, do not force any perticular part.

2. Remove the choke cover carefully. (If choke cover is

broken, replace with a new one.)

Figure C-7. Choke cover

DOOR COMPONENTS REMOVAL

UPPER AND LOWER OVEN HINGES REMOVAL
1. Remove the door assembly from oven cavity, referring

to "REMOVAL" of "DOOR REPLACEMENT AND AD-
JUSTMENT".

2. Remove choke cover, referring to "CHOKE COVER

REMOVAL".

3. Release the oven hinges from the door panel.
4. Now, the oven hinges are free.

DOOR HANDLE REMOVAL
1. Remove the door assembly from oven cavity, "RE-

MOVAL" of "DOOR REPLACEMENT AND ADJUST-

DOOR DISASSEMBLY

UPPER
OVEN HINGE

LOWER
OVEN HINGE

CHOKE COVER

DOOR
HANDLE

LATCH HEAD

BENT

PUTTY KNIFE

CHOKE COVER

DOOR PANEL

FRONT

BENT

MENT".

2. Place door assembly on a soft cloth with latches facing

up.

3. Remove choke cover from door panel, referring to

"CHOKE COVER REMOVAL".

4. Remove two (2) screws holding the door handle to

door.

5. Remove the door handle from door panel.
6. Now, door handle is free.

UPPER AND LOWER LATCH HEADS REMOVAL
7. Remove the door release lever from the door assem-

bly.

8. Remove the three (3) screws holding the joint plate to

the door panel.

9. Release the latch spring from the tab of the joint lever

and joint plate.

10.Release the latch heads from joint lever and joint plate.
11.Now, the latch heads are free.

DOOR CASE REMOVAL
1. Remove the door assembly from oven cavity, referring

to "REMOVAL" of "DOOR REPLACEMENT AND AD-
JUSTMENT".

2. Remove choke cover from door panel, referring to

"CHOKE COVER REMOVAL".

3. Remove door handle from door panel, referring to

"DOOR HANDLE REMOVAL".

4. Bend up four (4) nails of door case.
5. Remove door case from door panel.
6. Now, the door case is free.

DOOR GLASS REMOVAL
7. Remove the four (4) screws holding two (2) outside

window fixing plates to door panel.

8. Now, the door glass is free.

SERVICE INFORMATION

IMPORTANT: When the magnetron MG1 and/or MG2 is replacing, the relays (RY3 and RY4 for R-22AT/24AT; RY2

and RY3 for R-23AM) on control unit must be replaced at the same time. Because if the
magnetron's life has been over, the relay's life may also be over.