JRC JMR-92 Series Field Service Manual page 525

Step 2 Remove the relay filter circuit board.
After having removed all the cables connected to the relay filter circuit board, remove the fixing
screws (four M4 screws) and remove the relay filter circuit board together with the metal fitting.
Step 3 Remove the relay filter circuit board.
Remove the screws holding the relay filter circuit board in place (four M4 screws) and replace
the relay filter circuit board on the metal fitting. After having replaced the relay filter circuit board,
reassemble the unit 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.
Remove the four screws.
Remove the four screws.
4-305 Chapter 4 Replacement procedure