Lenovo Secure Managed Client - Manual (Page 38)

Table 15. Thermal cooling (continued)
Symptom Cause Action
1.
Front operator's panel unit fault
LED amber.
2.
An amber LED is lit on one or
more PSUs.
If the internal temperature
measured in the airflow
through the enclosure
exceeds a pre-set threshold,
a thermal alarm sound.
1.
Check to ensure that local
ambient environment temperature
is below the upper 35°C (95°F)
specification.
2.
Check the installation for any
airflow restrictions at either the
front or rear of the enclosure. A
minimum gap of 2.5 cm (1 inch)
at the front and 5 cm (2 inches)
mm at the rear is recommended.
3.
Check for restrictions due to dust
build up; clean as appropriate.
4.
Check for excessive re-circulation
of heated air from rear to front.
Use in a fully enclosed rack
installation is not recommended.
5.
If possible, turn off the enclosure
and investigate the problem
before continuing.
Drive carrier module faults
Each Drive Carrier module has two LEDs: an upper (green) LED and a lower
(amber) LED.
v Under normal operation, the green LED is on and will flicker as the drive
operates
v Under normal operation, the amber LED will be:
– Off if there is no drive present
– Off as the drive operates
– On if a drive fault is present
Dealing with hardware faults
Ensure that you have obtained a replacement module of the same type before
removing any faulty module.
v If the subsystem is powered up and you remove any module, replace it
immediately. If the subsystem is used with modules or module blanks missing
for more than a few minutes, the enclosure can overheat, causing power failure
and data loss. Such use will invalidate the warranty.
v Replace a faulty drive with a drive of the same type and equal or greater
capacity.
v Refer to your vendor-supplied documentation when using storage software for
handling drive-related hardware faults.
v All drive bays must be installed with a drive carrier module in order to
maintain a balanced airflow.
v All the supplied plug-in power supply units, electronics modules and blank
modules must be in place for the air to flow correctly around the cabinet
30 User Guide