JRC JMR-92 Series Field Service Manual page 362

Step 3 Replace the brake control circuit.
Remove the cable that is connected to the brake control circuit.
Then, remove the motor driver circuit by removing the four screws (M4), the relay filter by
removing the four screws (M4), and the neck heater terminal block mounting plate by removing the
two screws (M4).
Replace the brake control circuit by removing the four spacers (M4) and two FET screws (M3)
that are holding the circuit board. After replacing the brake control 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 4 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.
This completes brake control circuit replacement.
Chapter 4 Replacement procedure
Motor driver circuit board
Terminal block mounting
plate for neck heater
Brake control circuit
(CCB-655)
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