JRC JMR-92 Series Field Service Manual page 707

Step 4 Remove the Relay terminal block: CQD-2312
Disconnect all cables / wires from Relay terminal block by using a 3 mm width flat head
screwdriver. Then, dismount the Relay terminal block from the DIN rail. For the details of
dismounting, refer to the " Replacing the Relay Terminal Block: CQD-2312".
AC and DC power supplies have been connected to the Relay terminal block. Before
replacement work, be sure to turn OFF the applicable power circuit breaker.
Not following this instruction will cause electric shock and/or malfunction.
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 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.
An AC power supply is connected to the UPS. Before starting replacement work, turn OFF the
circuit breaker of the AC power supply.
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
Chapter 4 Replacement procedure
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