HP Cluster Platform Interconnects v2010 Quadrics QsNetII Interconnect - Page 89

Using the Component LEDs for Fault Diagnosis

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- Fault - This is the over temperature LED which illuminates red if the PSU is too hot, perhaps because of a fan tray failure. Check the fan tray LEDs on the controller card. - Over Temp - This is the DC power good LED which illuminates green if the DC output is within acceptable limits or amber if the DC output is faulty. • The QM580 clock generator box has the following status LEDs: - Pwr On, (power on) green. - Clk In OK, (clock in OK) green. - Master, amber - This LED indicates that the clock box is the master source of the signal for the network. - Error, red. 10.2 Using the Component LEDs for Fault Diagnosis The component LEDs provide a first level diagnostic for hardware problems. The following sections explain how to use the LEDs to isolate hardware faults or to determine the proper operation of hardware and thus isolate a potential software problem. Link LEDs are those that enable you to verify the status of a cable connection between one component and another, such as the QM500 PCI card in a node and the switch cards in the interconnect. A link can be node-to-interconnect, or interconnect-to-interconnect for federated configurations. Each card has a group of three red, amber, and green LEDs. Each LED has the following meaning when illuminated: • Red - An illuminated red LED has three possible interpretations - An error has been detected since the registers were last cleared. - The module is initializing or the node is rebooting and the LED will stop glowing when the process is complete (indicating a good link). - There is no link cable installed (unused port). • Amber (flashing) - Data traffic is flowing on the link. • Green - The link is connected and good. Where two functional components are powered on and connected by a functional link cable, the green LEDs are illuminated. An illuminated red LED indicates that a component or the link cable might be faulty. The fault might only be an installation problem, such as a card that is not correctly seated in the slot or a cable that is not securely seated in a port. You can use the LEDs to diagnose the network as follows: • Using LEDs to diagnose problems in the link between a node and its port on the interconnect is described in Section 10.2.1. • Using LEDs to diagnose problems in the interconnect controller card is described in Section 10.2.2. • Using LEDs to diagnose problems in the power supply unit (PSU) is described in Section 10.2.3. • Using LEDs to diagnose problems in the clock generator is described in Section 10.2.4. 10.2.1 Link LEDs Link LEDs are those that enable you to verify the status of a cable connection between one component and another, such as the QM500 PCI card in a node Using Component LEDs 10-3

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-
Fault – This is the over temperature LED which illuminates red if the
PSU is too hot, perhaps because of a fan tray failure. Check the fan tray
LEDs on the controller card.
-
Over Temp – This is the DC power good LED which illuminates green if the
DC output is within acceptable limits or amber if the DC output is faulty.
•
The QM580 clock generator box has the following status LEDs:
-
Pwr On, (power on) green.
-
Clk In OK, (clock in OK) green.
-
Master, amber – This LED indicates that the clock box is the master source
of the signal for the network.
-
Error, red.
10.2 Using the Component LEDs for Fault Diagnosis
The component LEDs provide a first level diagnostic for hardware problems. The
following sections explain how to use the LEDs to isolate hardware faults or to
determine the proper operation of hardware and thus isolate a potential software
problem.
Link LEDs are those that enable you to verify the status of a cable connection
between one component and another, such as the QM500 PCI card in a node
and the switch cards in the interconnect. A link can be node-to-interconnect, or
interconnect-to-interconnect for federated configurations. Each card has a group of
three red, amber, and green LEDs. Each LED has the following meaning when
illuminated:
•
Red – An illuminated red LED has three possible interpretations
-
An error has been detected since the registers were last cleared.
-
The module is initializing or the node is rebooting and the LED will stop
glowing when the process is complete (indicating a good link).
-
There is no link cable installed (unused port).
•
Amber (flashing) – Data traffic is flowing on the link.
•
Green – The link is connected and good.
Where two functional components are powered on and connected by a functional
link cable, the green LEDs are illuminated. An illuminated red LED indicates
that a component or the link cable might be faulty. The fault might only be an
installation problem, such as a card that is not correctly seated in the slot or a
cable that is not securely seated in a port. You can use the LEDs to diagnose the
network as follows:
•
Using LEDs to diagnose problems in the link between a node and its port on
the interconnect is described in Section 10.2.1.
•
Using LEDs to diagnose problems in the interconnect controller card is
described in Section 10.2.2.
•
Using LEDs to diagnose problems in the power supply unit (PSU) is described
in Section 10.2.3.
•
Using LEDs to diagnose problems in the clock generator is described in
Section 10.2.4.
10.2.1 Link LEDs
Link LEDs are those that enable you to verify the status of a cable connection
between one component and another, such as the QM500 PCI card in a node
Using Component LEDs
10-3