JRC JMR-92 Series Field Service Manual page 393

Step 3 Remove the transmitter-receiver unit
Loosen the bolts (five M5 bolts) and remove the transmitter-receiver unit. Slide it upward to
remove.
Step 4 Replace the magnetron cover.
Remove the screws (six M4 screws) holding the magnetron in place and then replace it.
Cut the leads (yellow and green) for the replacement magnetron to an appropriate length, then
tighten the screws and fix the cables in place.
After having replaced the magnetron, reassemble the unit by following the disassembly
procedure in the reverse order. Do not forget to tighten the bolts or screws, and make sure that
the cables are connected.
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.
Slide the unit.
Tighten the five bolts.
Contact may cause them to discharge.
4-173 Chapter 4 Replacement procedure