JRC JMR-92 Series Field Service Manual page 493

Step 5 Remove the modulation unit cover.
Remove the screws (six M4 screws) and take off the modulator cover.
Step 6 Replace the modulator circuit board.
Remove all the cables connected to the modulator circuit board and remove the screws holding
the modulator circuit board (six M4 screws) and the screws holding the heat radiation plate (two
M4 screws) and remove the modulator circuit board. After having replaced the modulator 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 two screws.
Remove the six screws.
Remove the six screws.
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Modulator circuit board
Disconnect the cables.
Chapter 4 Replacement procedure