Service manual

32
DMO2420B
DMO2420R
DMO2420S
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.
Figure C-5. Door Replacement
SEALER FILM
Installation
1. Put the adhesive tape on the backing film of the sealer
film as shown in Fig. C-6.
2. Tear the backing film by pulling the adhesive tape.
3. Put the pasted side of the sealer film on the door panel
Figure C-6. Sealer film
13.Now, door panel is free.
14.Slide latch head upward and remove it from door frame
by releasing latch spring from door frame and latch head.
15.Now, latch head and latch spring are free.
16.Remove one (1) screw holding the door glass stopper to
the door frame.
17.Remove door glass stopper from door frame.
18.Slide the door glass rightwards and then slide upwards to
release the door glass from the tabs holding it.
19.Remove the door glass from the door frame.
20.Now, door frame is free.
REINSTALLATION
1. Re-install door glass to door frame as follows.
1-1. Insert the upper edge of the door glass into the five (5)
tabs of the door frame.
1-2. Slide the door glass downwards and insert the lower
edge of door glass into the five (5) tabs of the door
frame.
1-3. Slide the door glass leftwards and insert the left edge
of door glass into the two (2) tabs of the door frame.
2. Re-install the door glass stopper to the door frame so that
the two (2) holes of the door glass stopper fit to the two
(2) pins of the door frame. And hold the door glass
stopper with one (1) screw.
3. 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.
4. Re-install door panel to door frame by catching ten (10)
tabs of door frame on the edges of door panel.
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.)
Sealer film
Backing film
Adhesive tape
Pin
Pin
Upper
Oven Hinge
Upper Oven
Hinge
Lower Oven
Hinge
Lower
Oven Hinge
Choke Cover