NEC Univerge SV8500 Operation And Maintenance Manual page 305

When FAN failure is detected, the alarm lamps light as the following, according to the nature of its fail-
Note 2:
ure.
(1) When FAN failure is detected in any of the IMG, TSWR, or MISCR, MN lamp turns on.
(2) When either one of the three CPU FANs is faulty, MN lamp turns on.
(3) When two or all of the three CPU FANs are faulty, MJ lamp turns on.
2
Frame in which a fault is detected
b7 b6 b5 b4 b3
3
Factor of failure
b7 b6 b5 b4 b3
Reference: See Chapter 5
4 Factor of failure (for SR-MGC(SR
T20) only)
b7 b6 b5 b4 b3
5
Factor of failure (for SV8500 only)
b7 b6 b5 b4 b3
b0-b3: Frame (0 Only)
b2 b1 b0
b4, b5: Frame Group number
b6, b7: Kind of frame
b0:
b1:
b2 b1 b0
b2:
b3:
b4:
Power Supply Fault, for the repair procedure.
b0:
b1:
b2 b1 b0
b2:
b3:
b4:
b5:
b6:
b7:
b0:
b1:
b2 b1 b0
b2:
b3:
b4:
b5:
b6:
0/1 = CPU is mounted/Not mounted
00 = IMG
01 = CPU
02 = TSWR
03 = MISCR
0/1 = -/OBP Alarm 0 side
0/1 = -/OBP Alarm 1 side
0/1 = -/OBP Alarm MISC side
0/1 = -/Power Alarm 0 side
0/1 = -/Power Alarm 1 side
0/1 = -/POWER UNIT for Dual Configuration is connected to CPU
0.
0/1 = -/Internal failure of the POWER UNIT in CPU 0.
0/1 = -/The POWER UNIT for Dual Configuration connected to
CPU 0 is faulty.
0/1 = -/The FAN UNIT for Dual Configuration connected to CPU 0
is faulty.
0/1 = -/POWER UNIT for Dual Configuration is connected to CPU
0.
0/1 = -/Internal failure of the POWER UNIT in CPU 1.
0/1 = -/The POWER UNIT for Dual Configuration connected to
CPU 1 is faulty.
0/1 = -/The FAN UNIT for Dual Configuration connected to the
CPU 1 is faulty.
0/1 = -/OBD Alarm GT 0
system
0/1 = -/OBD Alarm GT 1
0/1 = -/OBD Alarm PLO 0
0/1 = -/OBD Alarm occurred in 0 System of PLO
0/1 = -/FAN 0 side failure
0/1 = -/FAN 1 side failure
0/1 = -/FAN 2 side failure
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CHAPTER 3 System Messages
system
system