A System Failure - NEC Univerge SV8500 Operation And Maintenance Manual

6-A: System Failure
Default Alarm
NON
This message displays when any of the following faults are detected:
• Power failure
• FAN failure
• Fuse blowing
• In-Frame abnormal temperature
1: XX00 XXXX 00XX XX00 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000
3
1 2
4: 0000 0000 0000 0000 5: 0000 0000 0000 0000 6: 0000 0000 0000 0000
7: 0000 0000 0000 0000 8: 0000 0000 0000 0000 9: 0000 0000 0000 0000
1
Probable cause for failure
b7 b6 b5 b4 b3
When abnormal PWR Supply is detected, the alarm lamps light as the following, according to the na-
Note 1:
ture of its failure.
(1) When either one of the systems of PWR Supply circuit cards in the IMG is faulty, MN lamp turns on.
(2) When either one of each system of PWR, GT, and PLO circuit cards in the TSWR is faulty, MN lamp
turns on.
(3) When either one of the pair of PWR Supply circuit cards in the MISCR is faulty, MJ lamp turns on.
(4) When both system of PWR Supply circuit cards within the same IMG are faulty, MJ lamp turns on.
(5) When both system of PWR Supply circuit cards in the TSWR are faulty, MJ lamp turns on.
(6) When both system of GT circuit cards in the TSWR are faulty, MJ lamp turns on.
(7) When both system of PLO circuit cards in the TSWR are faulty, MJ lamp turns on.
(8) When both system of PWR Supply circuit cards in the MISCR are faulty, MJ lamp turns on.
Default Grade
3
4
5
b0:
b1:
b2 b1 b0
b2:
b3:
b4:
b5:
b6:
Grade Modified
(FIXED)NON
Input power (-48V) down/abnormal detected
PWR Supply abnormal detected Note 1
PWR Supply Fuse Blown detected
Abnormal temperature MJ (70ºC [158ºF])
Abnormal temperature MN (60ºC [140ºF])
(0 is fixed.)
FAN failure detected Note 2
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CHAPTER 3 System Messages
Lamp Modified
(FIXED)3