Fault Of Alarm Lamps On Pwr Supply - NEC Univerge SV8500 Operation And Maintenance Manual

4.9.4

Fault of Alarm Lamps on PWR Supply

(1) Press RESET button of the PWR supply.
[Alarm lamp goes out]
• FAULT SUPERVISION
[Alarm lamp illuminates again]
(a) Set the MB switch on the PWR supply UP.
(b) Turn circuit breaker OFF.
(c) Set MB switch on all the circuit cards, except PWR supply.
(d) Extract all circuit cards from their mounting slots.
(e) Turn circuit breaker ON.
(f) Set the MB switch to DOWN side.
(g) Check to see if the alarm lamp illuminates.
(h) If the alarm lamp does not illuminate, insert the circuit cards into their mounting slot individually to
see if the alarm lamp illuminates.
Insert each PWR supply with its MB switch to UP side, and then set it back to DOWN side.
Note:
CHAPTER 5 Operation Procedure for System with PIR
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