JRC JMR-92 Series Field Service Manual page 461

Step 4 Replace the encoder.
Remove the two bolts (M4) that hold the encoder and replace it. Hold the gear of the encoder by
lightly pressing it to the gear of the main shaft. After replacing the encoder, close the cover
following the disassembly procedure in the reverse order. Finally, set the safety switch to On and
check the operation.
This completes encoder replacement.
Port side
左舷側
Step 5 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. Start transmission and check that the radar image appears
without error. Open the service engineer menu to perform azimuth adjustment.
This completes encoder replacement.
エンコーダ
Encoder
固定 M4 ボルト
Remove the two bolts
(M4)
（2 箇所）
4-241 Chapter 4 Replacement procedure