Sharp R-350B Service Manual page 24

R-350B
and forth, and up and down. In and out play of the door
allowed by the upper and lower position of the latch
hook should be less than 0.5mm. The vertical position
of the latch hook should be adjusted so that the 1st.
latch switch, 2nd. latch switch and stop switch are
activated with the door closed. The horizontal position
of the latch hook should be adjusted so that the plunger
of the monitor switch is pressed with the door closed.
3. Secure the screws with washers firmly.
4. Check all switches operation. If each switch has not
activated with the door closed, loosen screw and adjust
the latch hook position.
After adjustment, check the following.
1. In and out play of door remains less than 0.5mm when
in the latched position. First check upper position of
latch hook, pushing and pulling upper portion of door
toward the oven face. Then check lower portion of the
latch hook, pushing and pulling lower portion of the
door toward the oven face. Both results (play in the
door) should be less than 0.5mm.
REMOVAL
1. Disconnect oven from power supply.
2. Push the open button and open the door slightly.
3. Insert an putty knife (thickness of about 0.5mm) into the
gap between the choke cover and door frame as shown
in Figure C-7 to free engaging parts.
4. Try the principles of the lever and lift up the choke cover
by inserting a putty knife as shown Figure C-7.
5. Release choke cover from door panel.
6. Now choke cover is free.
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.
Choke Cover
Figure C-7. Door Disassembly
9. Release door panel from nine (9) tabs of door frame by
sliding door panel downward.
10.Now, door panel with sealer film is free.
11.Tear sealer film from door panel.
12.Now, door panel is free.
13.Slide latch head upward and remove it from door frame
with releasing latch spring from door frame and latch
head.
14.Now, latch head and latch spring are free.
15.Remove door screen from door frame as follows.
1) Turn the door frame over. Refer to Figure 1.
2) Push the upper right corner of the door screen by
your finger from the front side of the door frame.
And slide the door screen over the corner tab until
the upper and right edges of the door screen touch
the tabs of the door frame. Refer to Figure 2.
DOOR REPLACEMENT
Door Frame
Putty Knife
22
2. The 1st. latch switch, 2nd. latch switch and stop switch
interrupt the circuit before the door can be opened.
3. Monitor switch contacts close when door is opened.
4. Re-install outer case and check for microwave leakage
around door with an approved microwave survey meter.
(Refer to Microwave Measurement Procedure.)
Door
Latch
Heads
Switch
Lever
Figure C-6. Latch Switch Adjustments
1
Door frame
Tabs
Tab
(Corner)
View; back side of door frame
3) Turn the door frame back. Refer to Figure 3.
4) Push the lower right corner of the door screen by
your finger from the back side of the door frame.
And slide the door screen clockwise. Refer to
Figure 3.
5) Pull out the door screen toward the lower right
corner of the door frame. Refer to Figure 4.
3
View; front side of door frame
16.Now, door screen is free.
RE-INSTALL
1. Re-install door screen to door frame by reversing the
procedure of item 18 of "REMOVAL".
2. 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.
3. Re-install door panel to door frame by fitting nine (9)
tabs of door frame to nine (9) holes of door panel.
4. Hold the door panel to the door frame by sliding the
door panel upward.
5. Put sealer film on door panel. Refer to "Sealer Film"
Latch Hook
2nd. Latch
Switch
Monitor
Switch
1st. Latch
Switch
Stop
Switch
2
Tabs
Door
screen
4