Component Teardown
4-8
Door Sensing Switch, Secondary
Interlock Switch And Monitor
Switch Adjustment
If the door sensing switch, primary interlock switch, third
interlock switch and monitor switch do not operate
properly due to a misadjustment, the following adjustment
should be made.
1. Disconnect the oven power supply cord and remove
outer case.
2. Open the oven door and block it open.
3. Discharge the high voltage capacitor.
4. Loosen each screw securing the latch hook right and
the latch hook left to the oven cavity front plate.
5. With door closed, adjust the latch hook right and the
latch hook left by moving them back and forth and
up and down. In and out play of the door allowed by
the latch hook right and the latch hook left should be
less than 0.5 mm. The vertical position of the latch
hook right and the latch hook left should be adjusted
so that the door sensing switch and the primary
interlock switch are activated with the door closed.
The horizontal position of the latch hook right and the
latch hook left should be adjusted so that the plunger
of the monitor switch is pressed with the door closed.
Door Sensing Switch, Secondary
Interlock Switch and Monitor Switch
Replacement
REMOVAL
1. Disconnect the oven power supply cord and remove
outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the wire leads from the switch.
5. Remove the one (1) screw securing the latch hook
(right or left) to the oven cavity front plate, and
release the latch hook (right or left).
6. Keep pushing stopper tab holding switch to the latch
hook (right or left) and revolve the switch on the pole.
7. Remove the switch from the latch hook (right or left).
REINSTALL
1. Re-install each switch in its place. The door sensing
switch is in the lower position of the latch hook right.
The secondary interlock switch is in the lower
position of the latch hook left. The monitor switch is
in the upper position of the latch hook left.
2. Hold the latch hook (right or left) to the oven cavity
front plate and secure with the one (1) screw.
3. Reconnect the wire leads to the switch.
4. Make sure that monitor switch is operating properly
and check continuity of the monitor circuit.
To discharge the high voltage capacitor, wait for 60
seconds and then short-circuit the connection of
the high-voltage capacitor (that is the connecting
lead of the high-voltage rectifier) against the
chassis with the use of an insulated screwdriver.
To discharge the high voltage capacitor, wait for 60
seconds and then short-circuit the connection of
the high-voltage capacitor (that is the connecting
lead of the high-voltage rectifier) against the
chassis with the use of an insulated screwdriver.
Monitor Switch
Latch Hook Left
Secondary
Interlock
Switch
Pole
Pole
Stopper
Door
Sensing Switch
Latch Hook Right
Pole
Stopper
Tab
Tab
Figure 4-3. Switch Removal
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