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CHAPTER 14 Troubleshooting
Power, fan, environmental alarms
With a redundant configuration, if a power supply unit’s failure occurs while the system is running,
the system will display a message on operating system and will continue to running. However, a
message may not be displayed for a non-redundant configuration, and the system will shut down
immediately. The same applies to the fan failure. To identify the cause of the problem, message log
file may be useful if the system can restart. The causes of this type of event are therefore
continuously reported on the LCD panel after the system is powered down. However, the messages
on the LCD panel will disappear if the Main Line switch is turned off.
Table 14.4 Power/Fan/Environmental Error Messages
Message level Message content Description
(1st line) (2nd line)
SCF:warning
SCF:alarm
Rotation alarm is detected at fan n of fan traym.
(x-y): When a plurality of events is detected
Abnormality is detected at n-th FEP(Front End Power)
(#m): When a plurality of events is detected
Faulty rotation is detected at fan n of fan tray m.
When a plurality of events is detected
Abnormal ambient temperature (exceeding approx.
40(degrees Celsius/104 F) is detected
Abnormal in-cabinet temperature detected
Faulty ambient temperature sensor detected
Abnormality is detected at n-th FEP
(#m): When a plurality of events is detected
Abnormality is detected at n-th DDC
Abnormality is detected at n-th BE
Abnormality is detected at n-th 2.5V PPU (Power
Processing Unit)
Abnormality is detected at n-th 3.3 V PPU
Abnormality is detected at n-th 5 V PPU
Abnormality is detected at n-th 12.0 V PPU
Failed to power-up 0x FEP
Failed to power-up xx DDC
Failed to power-up 0x 2.5V PPU
Failed to power-up 0x 3.3 V PPU
Failed to power-up 0x 5.0 V PPU
Failed to power-up 0x 12.0 V PPU
Failed to power-up 0x BE
FAN m-n
FAN m-n (x-y)
FEP#n
FEP#n (#m)
BE#n
FAN m-n
FAN m-n (x-y)
Thermal Inlet
Thermal CPU
Sensor Inlet
FEP#n
FEP#n (#m)
DDC#n or 0X-DDC#n
BE#n
PPU2#n
PPU3#n
PPU5#n
PPU12#n
FEP DC-ON 0x
DDC DC-ON xx
PPU2 DC-ON 0x
PPU3 DC-ON 0x
PPU5 DC-ON 0x
PPU12 DC-ON 0x
BE DC-ON 0x
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