JRC JMR-92 Series Field Service Manual page 709

Before conducting Unit replacement work, always be sure that every
cable-tie that fastens the cable has been removed.
Replacement work without the above may lead Unit/cable breakage.
Step 9 Change the USP Input Filter: ME-NAX-NEF/QUINT20
Loosen the European-style terminal blocks in the lower part of the UPS input filter
ME-NAX-NEF/QUINT20 and disconnect the cables.
The UPS input filter is fastened to the DIN rail. The UPS input filter can be removed from the
DIN rail using the principle of leverage, by inserting a 6 mm width flat head screwdriver into the
groove of the metal fixture in the lower part of the UPS input filter.
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Chapter 4 Replacement procedure 4-488