JRC JMR-92 Series Field Service Manual page 259

Step 4 Replace the power supply circuit board
Remove the cable connected to the power supply circuit board and the eight screws (M4) to
replace it. If the thermal conductive pad on the casing on the back of the power supply circuit
board (the soldered side) is damaged, affix a new one to the replacement power supply circuit
board. After replacing the power supply circuit board, assemble the unit in the reverse order of the
disassembly procedure. 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 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 power supply circuit board replacement.
Remove the eight screws.
Power supply circuit
board
4-39 Chapter 4 Replacement procedure