Door Replacement - Sharp R-350Y Service Manual

[13] DOOR REPLACEMENT

1. REMOVAL
1. Disconnect the power supply cord.
2. 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-5 to
free engaging parts.
4. Pry the choke cover by inserting a putty knife as shown Figure C-5.
5. Release choke cover from door panel.
6. 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.
Choke Cover
Figure C-5. Door Disassembly
7. Release two (2) pins of door panel from two (2) holes of upper and
lower oven hinges by lifting up.
8. Now, door panel with door frame is free from oven cavity.
9. Remove the two (2) screws holding the door panel to door frame.
10.Release door panel from ten (10) tabs of door frame.
11.Now, door panel with sealer film is free.
12.Tear sealer film from door panel.
13.Now, door panel is free.
14.Slide latch head upward and remove it from door frame with releas-
ing latch spring from door frame and latch head.
15.Now, latch head and latch spring are free.
16.Remove the two (2) door stoppers.
17.Remove door glass from door frame by sliding.
18.Now, door glass is free.
19.Remove the door decorations from the door frame by straightening
all tabs of the door decorations.
20.Now, the door frame is free.
2. REINSTALL
1. Re-install door screen and door decoration to door frame.
2. Reinstall the latch spring to the latch head. Reinstall the latch
spring to the door frame. Reinstall latch head to door frame.
3. Reinstall door panel to door frame by fitting ten (10)tabs of door
frame to ten (10) holes of door panel.
4. Hold the door panel to the door frame with the two (2) screws.
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;
Door Frame
Putty Knife
1) Make sure that 1st. latch switch, 2nd. interlock relay control switch
and monitor 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.
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 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 micro-
wave 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 (conden-
sation)-tight or light-tight. Therefore, occasional appear-
ance 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
Upper
Oven Hinge
Lower Oven
Pin
4. SEALER FILM
1. Put the adhesive tape on the backing film of the sealer film as
shown in Fig. C-7
2. Tear the backing film by pulling the adhesive tape.
3. Put the pasted side of the sealer film on the door panel
Sealer film
12 – 6
Upper Oven
Hinge
Slit choke of
door panel
Lower
Oven Hinge
Hinge
Choke Cover
Figure C-6. Door Replacement
Backing film
Adhesive tape
Figure C-7. Sealer film
R-350Y(S)