Sharp Carousel R-312AK Service Manual Download Page 25

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R-312AW
R-312AK

DOOR SENSING / THIRD DOOR/ PRIMARY INTERLOCK AND MONITOR SWITCHES ADJUSTMENT

If the door sensing switch, primary interlock switch, third
door switch and monitor switch do not operate properly due
to a misadjustment, the following adjustment should be
made.
1. Loosen the two (2) screws holding latch hook to the oven

cavity front flange.

2. With door closed, adjust latch hook by moving it back 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 door sensing
switch, primary interlock switch and third door 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 the 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.

2. The door sensing switch, third door switch and primary

interlock 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.)

Figure C-7. Latch Switch Adjustments

DOOR REPLACEMENT

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 door stopper and the choke cover to
free engaging parts as shown in Figure C-8.

4. Try the principles of the lever and lift up the door stopper.
5. Now, the door stopper is free from the door assembly.
6. Release two (2) pins of door panel from two (2) holes of

upper and lower oven hinges by lifting up.

7. Now, door assembly is free from oven cavity.
8. Insert an putty knife (thickness of about 0.5mm) into the

gap between the choke cover and door frame as shown
in Figure C-8 to free engaging parts.

9. Try the principles of the lever and lift up the choke cover

by inserting a putty knife as shown Figure C-8.

10.Release choke cover from door panel.
11.Now choke cover is free.

Choke Cover

Door Frame

Putty Knife

Door stopper

Figure C-8. Door Disassembly

12.Release door panel from nine (9) tabs of door frame by

sliding door panel downward.

13.Now, door panel with sealer film is free.
14.Tear sealer film from door panel.
15.Now, door panel is free.
16.Slide latch head upward and remove it from door frame

with releasing latch spring from door frame and latch
head.

17.Now, latch head and latch spring are free.
18.Remove door screen from door frame by releasing two

(2) tabs.

19.Now, door screen is free.

RE-INSTALL
1. Re-install door screen to door frame by fitting two (2) tabs

of door frame to two (2) holes of door screen.

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.