Dru Fault - NEC NEAX 2400 ICS Manual

4.2 DRU Fault

START
On the DLI card, set the MB switch UP.
Turn OFF the power supply to the DRU.
Unplug the AC cord of the DRU from the AC outlet.
Remove the cover off the DRU.
Remove the cable connected with PWR, LED, BATT0 and BATT1 connectors of the DRE card in the DRU.
Remove the cable connected with the CHAMP connectors of the DRE card.
Remove the DRE card from the DRU.
On a spare DRE card, set the switches and insert the DRE card into the DRU.
Connect the cable to PWR, LED, BATT0 and BATT1 connectors of the spare DRE card.
Connect the cable to the CHAMP connectors of the spare DRE card.
Mount the cover back onto the DRU.
Plug the AC cord of the DRU into the AC outlet.
Turn ON the power supply to the DRU.
On the DLI card, set the MB switch DOWN.
Check whether the fault is still indicated or not.
END
CHAPTER 5
Page 138
Revision CD 1.0
ND-45383 (E)