JRC JMR-92 Series Field Service Manual page 415

Step 4 Remove the magnetron.
Remove the screws (six M4 screws) holding the magnetron in place and remove the
magnetron.
Use a non-magnetic screwdriver because the contact of the metal tool with the magnetron
causes deterioration of its performance.
Make sure that the magnetron leads (yellow and green) do not contact and are pulled
away from other parts or the casing.
Contact may cause them to discharge.
Remove the six
Nut plate
screws.
Magnetron
Green cable
Yellow cable
4-195 Chapter 4 Replacement procedure