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Buttons of the control panel do not work.
Inspeciton method
Refer to User Manual
Button
Switch
(Tact Switch)
Switch
Are buttons
pressed in the
correct order?
Is the
connector of the
control panel
normal?
Replace PCB.
Food is not heated even though an oven works.
Is the latch
switch operating
normally?
Checking high voltage circuits
Refer to "Checking high voltage circuits"
on the previous page.
Method to control latch switch
Door Key
Door open
Door closed
1. Loosenly tighten the nuts
to check whether the
primary interlock switch
works by slightly moving
latches to right and left.
Then firmly tighten nuts.
2. Check whether the
secondary interlock
switch and door sensing
switch work by slightly
moving latches to right
and left, then firmly
tighten nuts.
Securing nuts
Connector
Connector
Membrane Type
Tact Type
Membrane Switch
6-1 Electrical Malfunction(continued)
