JRC JMR-92 Series Field Service Manual page 724

Step 5 Remove the two metal planks.
Remove the screws (M5: total of 4 locations) that fasten the two top and bottom metal planks
and take out both of them. For more information, refer to "4.3.8.1 Replacing the 26 Inch Sensor
LAN Switch Unit: NQA-2443
Step 6 Remove the power wiring of the UPS.
Disconnect the power connector of the UPS. The power connector of the UPS can be removed
using the principle of leverage, by inserting a 2 mm width flat head screwdriver into the groove at
the root of the terminal block in the upper part of the input filter ME-NAX-NEF/QUINT20. For more
information, refer to "4.3.9.1 Replacing the USP Input Filter: ME-NAX-NEF/QUINT20."
An AC power supply has been fed to the UPS. Before starting replacement work, turn OFF
the circuit breaker of the main power supply.
If a sensor LAN switch unit has been 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 an 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 10kg or more.
Be careful not to catch your hands while removing the rear panel.
Step 9 Change the UPS Battery: QUINT-BAT/24DC/3.4AH.
The UPS battery QUINT-BAT/24DC/3.4AH is connected with the UPS controller
QUIT-DC-UPS/24DC/20. Loosen the European-style terminal block in the lower part of the UPS
controller and disconnect the cables.
After removing the cables, remove the screws (M4: 4 locations) that fasten the UPS battery
QUINT-DC-UPS/24DC/20.
Before installing a new UPS battery, be sure to remove the fuse of the UPS battery.
."
4-503 Chapter 4 Replacement procedure