R-899SL (serv.man10). Component Replacement And Adjustment Procedure - Sharp Home Appliance Service Manual (repair manual). Page 6

R899(WH)

11 – 6

2. The contacts (COM-NO) of the stop switch and the monitored latch

switch open within 1.8mm gap between right side of cavity face
plate and door when door is opened.

3. When the door is closed, the contacts (COM-NO) of the stop switch

close.

4. When the door is closed the contacts (COM-NC) of the monitor

switch and monitored latch switch open. And the contacts (COM-
NO) of their switches close.

5. Re-install outer case and check for microwave leakage around the

door with an approved microwave survey meter. (Refer to Micro-
wave Measurement Procedure.)

1. REMOVAL
DOOR FRAME ASSEMBLY

1. Disconnect the oven from the power supply.

2. Pull 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-6 to
free engaging parts.

4. Release choke cover from door panel.

5. Now choke cover is free.

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.

Figure C-6. Door Disassembly

6. Lift the door upwards.

7. Now, door frame assembly is free from oven cavity.

DOOR PANEL

8. Remove the four (4) screws holding the door panel to the door

frame.

9. Now, door panel is free.

LATCH HEAD AND SPRING

10.Slide latch head upward and remove it from door frame with releas-

ing latch spring from door frame and latch head.

11.Now, latch head and latch spring are free.

12.Remove the two (2) screws holding the door handle and the door

handle base to the door frame.

13.Now, the door handle is free.

14.Remove the one (1) screw holding the door handle base to the

door frame.

15.Remove the door handle base from the door frame by sliding right-

wards.

16.Remove the front door glass from the door frame by sliding right-

wards.

17.Now, the front door glass is free.

1. Insert the front door glass to the door frame.

2. Insert the door handle base into the door frame.

3. Hold the door handle base to the door frame with the one (1) screw.

4. Reinstall the door handle and the door handle base to the door

frame with the two (2) screws.

5. Reinstall the latch spring to the latch head. Re-install the latch

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

6. Reinstall door panel to door frame.

7. Hold the door panel to the door frame with four (4) screws.

8. Located door panel hinge pins into cavity hinge location hole.

9. Reinstall choke cover to door panel by clipping into position.

NOTE: After any service to the door;

1) Make sure that the monitor switch, monitored latch

2) An approved microwave survey meter should be used

1. Door latch heads smoothly catch latch hook through latch holes

and that latch head goes through centre 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 micro-

wave survey meter (Refer to Microwave Measurement Procedure.).

NOTE: The door on a microwave oven is designed to act as an elec-

tronic 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

Choke Cover

Putty Knife

Door Frame

Pin

PIN

Lower
Oven Hinge

Upper
Oven Hinge

Lower
Oven
Hinge

Choke Cover

Slit Choke

Door Panel

Door Frame
Assembly