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Hardware Problems 35
3
When a problem is detected with a fan, the front panel Alarm LED lights up in orange, the
LED of the fan unit in which the error has occurred lights up in orange, and an error is
recorded in the event log.
If a fan error occurs, contact the vendor's service department.
When XG1200 overheats, the Alarm LED lights up in orange, and a temperature error is
recorded in the event log. In this case, check that the ambient and internal rack temperatures
are within the specified temperature range, adjust them if they are not and try turning the
XG1200 back on.
When error occurs even though the ambient rack temperatures are acceptable, turn the
XG1200 off and contact the vendor's service department.
When a voltage problem is detected, the Alarm LED lights up in orange, and an error is
recorded in the event log. In this case, turn the XG1200 off and contact the vendor's service
department.
When a power supply problem is detected, the Alarm LED lights up in orange, the power fail
LED of the power unit in which the error has occurred lights up in orange, and an error is
recorded in the event log. Verify that the AC power supply for the failed power unit is normal
and the cable has not come loose.
If some other reason has caused the power fail LED to light up, contact the vendor's service
department.
Startup diagnostic tests are run after the power is turned on. If a memory error is detected at
this stage, the Alarm LED blinks, but an event log entry is not created. If a memory error is
detected during operation, an event log entry is created and the system automatically
reboots. Note that whether or not a memory error results in an event log entry is a matter of
timing.
If memory errors occur repeatedly, contact the vendor's service department.
If an error is detected in one of the Xenpak modules, it will be recorded in the event log. In
addition, if it is a temperature or laser output error the affected Xenpak module is shutdown.
If a temperature error is recorded in the log, check that the ambient and internal rack temper-
atures are within the specified range, and adjust if necessary.
If Xenpak errors occur repeatedly, contact the vendor's service department.
3-2 Hardware Problems
This section explains what should be done when a fan, temperature, memory, or Xenpak module
error occurs.
Fan error
Temperature error
Voltage error
Power supply error
Memory error
Xenpak error