Door Replacement - Sharp R-890SLM Service Manual

R-890SLM
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.

[17] DOOR REPLACEMENT

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
releasing latch spring from door frame and latch head.
11. Now, latch head and latch spring are free.
DOOR HANDLE AND FRONT DOOR GLASS
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 three (3) screws holding the door handle base
to the door frame.
15. Remove the door handle base and handle decoration from
the door frame by sliding rightwards.
16. Remove the front door glass from the door frame by sliding
rightwards.
17. Now, the front door glass is free.
2. REINSTALLATION
1. Insert the front door glass to the door frame.
2. Insert the door handle base and handle decoration into the
door frame.
3. Hold the door handle base and handle decoration to the
door frame with the three (3) screws.
Service_R-890SLM.indd 28
Putty Knife
Choke Cover
Door Frame
11 - 6
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 Microwave Measurement Procedure.)
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
switch and stop switch are operating properly
(Refer to chapter "Test Procedures".).
2) An approved microwave survey meter should be
used to assure compliance with proper microwave
radiation emission limitation standards (Refer to
Microwave Measurement Procedure.).
3. 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 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
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.
Pin
Door Frame
Assembly
Door Panel
Slit Choke
Lower
Oven
PIN
Hinge
Figure C-7. Door Replacement
Upper
Oven Hinge
Lower
Oven Hinge
Choke Cover
4/25/09 10:55:56 AM