JRC JMR-92 Series Field Service Manual page 282

Step 2 Remove the motor driver unit.
Remove the cover on the right (starboard) side and loosen the four screws (M4) to remove the
drive unit, which has the motor driver circuit board on its rear side. Remove the cable that is
connected from the motor driver to the driver circuit.
Step 3 Remove the motor driver circuit board.
Remove the driver unit and remove the cable that is connected to J1504 of the motor driver
circuit (CBD-2000/2001).
Chapter 4 Replacement procedure
Driver unit
(driver circuit board at the back side)
CBD-2000/2001
J1504
4-62
Remove the four
screws.