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Component Teardown and Testing
Oven Lamp And Lamp Socket
Removal
1. Disconnect the power supply cord and then remove
outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
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.
4. Pull the wire leads from the oven lamp socket.
5. Remove support bracket and the magnetron duct.
6. Unscrew the oven lamp from the lamp socket.
7. Remove socket from magnetron duct.
8. Now, the oven lamp and socket are free.
Terminals
Magnetron Duct
Oven Lamp
Figure 4-3. Oven Lamp Socket
Socket
Control Panel Assembly Removal
1. Disconnect the power supply cord and then remove
outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
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.
4. Disconnect the wire leads from panel components.
5. Remove the one (1) screw holding the control panel
assembly to the oven cavity front plate.
6. Slide the control panel assembly upward and remove
it.
7. Now, individual components can be removed.
NOTES:
1. Before attaching a new key unit, wipe off remaining
adhesive on the control panel frame surfaces
completely with a soft cloth soaked in alcohol.
2. When attaching the key unit to the control panel
frame, adjust the upper edge and right edge of the
key unit to the correct position of control panel
frame.
3. Place the key unit firmly to the control panel frame
by rubbing with soft cloth not to scratch.
Key Sheet Replacement
Removal
1. Disconnect the power supply cord and then remove
outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the control panel assembly.
5. Remove the five (5) screws holding the control unit to
the control panel frame. And remove the control unit
by releasing from tabs.
6. Remove the key sheet from the control panel frame.
NOTE: Heat gun will soften adhesive.
4-4
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