JRC JMR-92 Series Field Service Manual page 529

Step 3 Operation check
After having completed the replacement, turn On the safety switch and check operation by
following the procedure below.
(1) Turn On the Display unit. After the countdown is completed, start transmission and check
that the radar image appears without error. Transmit the radar wave in the long range
mode and open the service engineer menu to perform tuning adjustment. With the
service engineer menu open, also make sure the magnetron current is shown between
the 8th and 10th calibration markings.
This completes receiving unit replacement.
4-309 Chapter 4 Replacement procedure