Service manual

1918
INTERLOCK MECHANISM FUNCTIONS AND ADJUSTMENTS
The door lock mechanism is a device which has been specially designed to completely eliminate microwave radiation
when the door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of
microwave.
(1) Primary interlock switch
When the door is closed, the hook will lock the oven door.
If the door is not closed properly, the oven will not operate.
When the door is closed, the hook pushes the lever downward.
The lever presses the button of the primary interlock switch to bring it under ‘ON’ condition.
Adjustment 1
When the door is closed, the switch button is pushed
by the hook.
The movement of the switch button should exceed 1.2
mm measured at the top of the button.
Hook
Lever hook
Lever pivot
Mounting screw
Button
Primary interlock
switch
(2) Secondary interlock switchm, monitor interlock switch and D.O.M switch
When the door is closed, the hook pushes the lever lock forward, and the lever presses the button of the interlock
monitor switch to bring it under ‘OFF’ condition. Simultaneously, the lever lock presses the button on the
secondary interlock switch and D.O.M switch to bring it under ‘ON’ condition.
Adjustment 2
Interlock monitor switch
When the door is closed, the monitor switch should be opened before other switches closed.
When the door is opened, the monitor switch should be closed after other switches opened.
Secondary interlock switch and D.O.M switch
The movement of the switch button should exceed 1.2mm measured at the top of the button.
Adjustment step:
a) Loosen the two mounting screws.
b) Adjust the interlock switch assembly position.
c) Confirm the gap(1.2mm) described above.
d) Make sure that the latch lever moves smoothly after adjustment is completed
e) Completely tighten the two mounting screws.
Monitor interlock s/w
Lever hook
Hook
Door open monitor s/w
Secondary interlock s/w
Lever lock
Spring hook lever