NEC SV8500 Operation And Maintenance Manual - page 305
– 258 –
CHAPTER 3
System Messages
Note 2:
When FAN failure is detected, the alarm lamps light as the following, according to the nature of its fail-
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.
Frame in which a fault is detected
Factor of failure
Reference:
See Chapter 5
, for the repair procedure.
Factor of failure (for SR-MGC(SR
T20) only)
Factor of failure (for SV8500 only)
b7
b6
b5
b4
b3
b2
b1
b0
b7
b6
b5
b4
b3
b2
b1
b0
b7
b6
b5
b4
b3
b2
b1
b0
b7
b6
b5
b4
b3
b2
b1
b0
b0-b3: Frame (0 Only)
0/1 = CPU is mounted/Not mounted
b4, b5: Frame Group number
b6, b7: Kind of frame
00 = IMG
01 = CPU
02 = TSWR
03 = MISCR
2
b0:
0/1 = -/OBP Alarm 0 side
b1:
0/1 = -/OBP Alarm 1 side
b2:
0/1 = -/OBP Alarm MISC side
b3:
0/1 = -/Power Alarm 0 side
b4:
0/1 = -/Power Alarm 1 side
3
b0:
0/1 = -/POWER UNIT for Dual Configuration is connected to CPU
0.
b1:
0/1 = -/Internal failure of the POWER UNIT in CPU 0.
b2:
0/1 = -/The POWER UNIT for Dual Configuration connected to
CPU 0 is faulty.
b3:
0/1 = -/The FAN UNIT for Dual Configuration connected to CPU 0
is faulty.
b4:
0/1 = -/POWER UNIT for Dual Configuration is connected to CPU
0.
b5:
0/1 = -/Internal failure of the POWER UNIT in CPU 1.
b6:
0/1 = -/The POWER UNIT for Dual Configuration connected to
CPU 1 is faulty.
b7:
0/1 = -/The FAN UNIT for Dual Configuration connected to the
CPU 1 is faulty.
4
b0:
0/1 = -/OBD Alarm GT 0
system
b1:
0/1 = -/OBD Alarm GT 1
system
b2:
0/1 = -/OBD Alarm PLO 0
system
b3:
0/1 = -/OBD Alarm occurred in 0 System of PLO
b4:
0/1 = -/FAN 0 side failure
b5:
0/1 = -/FAN 1 side failure
b6:
0/1 = -/FAN 2 side failure
5