JRC JMR-92 Series Field Service Manual page 258

Step 2 Remove the modulation circuit board cables.
Remove the cover on the left (port) side. Remove the cables connected to the modulation circuit
board (connectors P2101 and P2102) and the fan cable (P1112).
Modulation
circuit board
Step 3 Remove the modulation circuit board.
Remove the two screws (M5) from the fixture. Loosen the six screws (M6) holding the
magnetron and the five screws (M5) holding the modulation unit, to remove it.
Remove the two screws.
Chapter 4 Replacement procedure
Disconnect the three cables.
Loosen the six screws.
4-38
Loosen the five
screws.