JRC JMR-92 Series Field Service Manual page 275

Step 4 Remove the encoder.
Loosen the two screws (M4) to remove the encoder together with the metal fixture.
Step 5 Replace the encoder.
Remove the metal fixture and the gear wheel attached to the encoder. Put them onto the new
encoder and put it back into the unit. After replacing the encoder, follow the disassembly
procedure in the reverse order. Do not forget to tighten the bolts or screws, and make sure that the
cables are connected.
Step 6 Operation check
After completing the replacement work, 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. Open the service engineer menu to perform
azimuth adjustment.
This completes encoder replacement.
Encoder
Remove the nut
Encoder
Metal fixture
Loosen the two screws.
Metal fixture
Remove the three screws.
4-55 Chapter 4 Replacement procedure