JRC JMR-92 Series Field Service Manual page 230

Step 2 Remove the screws holding the magnetron cables.
Measure the voltage between pin 1 and pin 3 of CPA-264 (modulation circuit) J2101 by using a
multimeter (1000 V DC or more), check that there is no remaining electric charge in the modulation
high-voltage circuit board. Remove the two screws (M4) holding the magnetron cables (both
yellow and green).
Remove the green cable.
Remove the yellow cable.
Chapter 4 Replacement procedure
Example: Port side cover removal
Magnetron
4-10
Remove the eight
hexagonal screws.
Remove the two screws.