Procedure For Replacing #0 Side Of Ac/Dc Power Unit - NEC Univerge SV8500 Operation And Maintenance Manual

2.7.2

Procedure for Replacing #0 Side of AC/DC Power Unit

STEP 1 Turn the power switch OFF for #0 side of AC/DC power unit.
Turn the switch to left side (OFF)
STEP 2 Unlock the #0 side of AC/DC power unit.
STEP 3 Use the handle to pull the #0 side of AC/DC power unit frontward.
FANs constantly turn as long as power units are inserted. Be careful not to touch the FANs.
Note:
STEP 4 Slide in the new AC/DC power unit. Check that the OPE lamp light is ON and the FAN is turn-
ing.
STEP 5 Slide the LOCK key downward to lock the unit.
STEP 6 Turn the power switch ON for #0 side of AC/DC power unit.
STEP 7 Repeat the above steps for #1 side of AC/DC power unit if necessary.
CHAPTER 5
Slide the LOCK key up
to unlock the unit.
Front View
– 589 –
Operation Procedure for System with PIR
Power Switch for #0
OFF ON
LOCK key for #0