NEC NEAX 2400 ICS Manual page 149

Digital remote unit system
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(2) When the battery is installed externally
START
On the DLI card, set the MB switch up.
Turn OFF the power supply to the DRU.
Remove the cover off the BATT BOX ASSEM.
Remove the cable connected to the battery.
Replace the battery with a spare and mount it onto the BATTBOX ASSEM.
Connect the cable to the battery.
Mount the cover back onto the BATT BOX ASSEM.
Turn ON the power supply to the DRU.
Unplug the AC cord of the DRU from the AC outlet.
Check to see if the DRU is operating on the battery.
Plug the AC cord of the DRU back into the AC outlet.
END
CHAPTER 5
Page 140
Revision CD 1.0
ND-45383 (E)

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