NEC SV8500 Operation And Maintenance Manual - page 636
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CHAPTER 5
Operation Procedure for System with PIR
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.
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.
Note:
FANs constantly turn as long as power units are inserted. Be careful not to touch the FANs.
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.
Turn the switch to left side (OFF)
Power Switch for #0
ON
OFF
Slide the LOCK key up
to unlock the unit.
LOCK key for #0
Front View