Outer Case Switches Replacement; Door Replacement - Sharp R-310AK Supplemental Service Manual

DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT
If the door sensing switch, secondary interlock 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 and secondary interlock 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 operation of all switches. 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
OUTER CASE SWITCHES REPLACEMENT (for the ovens from October 1996 production)
Removal
1. Disconnect the oven from the power supply and remove
the outer case.
2. Discharge high voltage capacitor.
3. Remove the one (1) screw holding the switch holder to
the oven cavity rear plate.
4. Release the two (2) tabs of the switch holder from the two
(2) holes of the oven cavity plate.
5. Release the one (1) snap of the main wire harness from
the hole of the switch holder.
6. Disconnect the wire leads from the outer case switches.
7. Remove the switch holder (outer case switch assembly)
from the oven cavity rear plate.
8. Push on the one (1) retaining tab holding the outer case
switch.
9. Turn the outer case switch clockwise around the pole.
10.Now, the outer case switch is free.
NOTE: Do not lose the actuator because it will be free after
the outer case switches are removed.
Re-install
1. Re-install the actuator to the switch holder by inserting
the tab of the actuator into the square hole on the switch
holder, as shown in Figure C-5.
2. Re-install the outer case switches to the switch holder,
as shown in Figure C-5.
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-6
toward the oven face. Both results (play in the door)
should be less than 0.5mm.
2. The door sensing switch and secondary 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-4. Latch Switch Adjustments
3. Re-connect the wire leads to the outer case switches,
referring to the Pictorial diagram.
4. Re-install the one (1) snap of the main wire harness to
the hole of the switch holder.
5. Catch the two (2) tabs of the switch holder to the two (2)
holes of the oven cavity rear plate.
6. Re-connect the switch holder (outer case switch
assembly) to the oven cavity rear plate with the one (1)
screw.
7. Re-install the outer case cabinet and check that the oven
is operating properly.
Figure C-5. Outer case switches replacement

DOOR REPLACEMENT

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. Insert an 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.
7. Try the principles of the lever and lift up the choke cover
27
Door
Latch Hook
Latch
Heads
Door
Sensing
Switch
Monitor
Switch
Secondary
Interlock
Switch
Switch
Lever
Outer case switch
Pole
Tab
Actuater
Switch holder
Outer case switch
R-310AK
R-330AK
R-330AW