JRC JMR-92 Series Field Service Manual page 287

Step 4 Replace the brake circuit unit.
Remove the cables that are connected to J1921 and J1911 of the brake control circuit
(CCB-655). Remove the four screws (M4) and replace the brake circuit unit (NZR-17). After
replacing the brake circuit, reassemble the unit by following 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 5 Operation check
After completing the replacement work, turn On the safety switch and carry out the following
work.
(1) Turn On the Display unit. After the countdown is completed, start transmission and check
that the radar image appears without error.
This completes brake circuit unit replacement.
Remove the four screws.
NZR-17
CCB-655
J1921
4-67
J1911
Chapter 4 Replacement procedure