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AS1021M-T2/1021M-82 User's Manual
3-3 Control Panel LEDs
The control panel located on the front of th SC815TQ+-560/SC815S+-560 chassis
has fi ve LEDs. These LEDs provide you with critical information related to dif-
ferent parts of the system. This section explains what each LED indicates when
illuminated and any corrective action you may need to take.
Overheat/Fan Fail: When this LED fl ashes it indicates a fan failure. When
on continuously (on and not fl ashing) it indicates an overheat condition, which
may be caused by cables obstructing the airfl ow in the system or the ambient
room temperature being too warm. Check the routing of the cables and make
sure all fans are present and operating normally. You should also check to make
sure that the chassis covers are installed. Finally, verify that the heatsinks are
installed properly (see Chapter 5). This LED will remain fl ashing or on as long as
the overheat condition exists.
NIC2: Indicates network activity on LAN2 when fl ashing .
NIC1: Indicates network activity on LAN1 when fl ashing.
HDD: Indicates IDE channel activity. On the 1021M-T2/1021M-82 this light
indicates SATA/SCSI and/or DVD-ROM drive activity when fl ashing.
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