Fan Tray; System Controller; Sunvts Software - Sun Microsystems Sun Fire V1280 Service Manual

1.2.2

Fan Tray

The system has a fan tray assembly that cools all components in the system. To
determine if a fan tray is faulty:
1. Inspect the fan tray to determine if it is faulty.
2. Inspect the fan tray LEDs and notice if the fault LED (
is lit, there is an internal fault or failure.
See Section 1.4.1, "Interpreting LEDs" on page
3. If the fan tray is faulty, the system controller changes the fan speed of the
remaining working fans to high speed to compensate for reduced air flow.
4. Schedule maintenance down time to replace the fan tray, since the system must be
powered off.
5. Replace the fan tray.
See "Removing the Main Fan Tray" on page 6-9
on page
1.2.3

System Controller

The system controller receives error messages from each of the boards and
determines the appropriate actions to take. Typical actions include:
Setting the appropriate error status bits
I
Asserting error pause to stop further address packets
I
Interrupting the system controller
I
1.3

SunVTS Software

The SunVTS software executes multiple diagnostic hardware tests from a single
user interface. The SunVTS software verifies the configuration, functionality, and
reliability of most hardware controllers and devices. For more information on the
SunVTS software, see
1-8 Sun Fire V1280/Netra 1280 Systems Service Manual • December 2003
6-12.
TABLE 1-4
1-10.
and
.
) is lit. When this LED
"Installing the Main Fan Tray"