JRC JMR-92 Series Field Service Manual page 719

If a sensor LAN switch unit is installed, disconnect the wiring of the sensor LAN switch unit. For
more information, refer to "4.3.8.1 Replacing the 26 Inch Sensor LAN Switch Unit: NQA-2443
Step 7 Remove the UPS output cables.
Using a 4 mm width flat head screwdriver, disconnect the output cables at the bottom of the
UPS controller. The output cables are fastened using a European-style terminal block. For more
information, refer to "4.3.9.1 Replacing the USP Input Filter: ME-NAX-NEF/QUINT20."
Step 8 Remove the rear panel.
Remove the screws (M5: 4 locations) that fasten the rear panel and take out the rear panel
together with the UPS. For more information, refer to "4.3.9.1 Replacing the USP Input Filter:
ME-NAX-NEF/QUINT20."
If a UPS has been installed, the weight of the rear panel increases to 10 kg or more.
Be careful not to catch your hands while removing the rear panel.
Step 9 Change the UPS controller: QUINT-DC-UPS/24DC/20.
Loosen the European-style terminal blocks in the lower part of the UPS controller
QUINT-DC-UPS/24DC/20 and disconnect the cables.
After disconnecting the cables, change the UPS controller. The UPS controller is fastened to the
DIN rail. The UPS controller can be removed from the DIN rail using the principle of leverage, by
inserting a 6mm width flat head screwdriver into the groove of the metal fixture in the lower part of
the UPS controller.
When installing a new UPS controller, be sure to set the "Bat-Select" rotary switch of the UPS
controller at "Service."
Chapter 4 Replacement procedure
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