Identifying Startup Problems - Mellanox Technologies Grid Director 4700 Installation Manual


Chassis fan units which operate when the system power is connected. The fan units will not
continue to operate when power is disconnected

Management Board (CLI/Eth)

Line Board (sLB-4018)

Fabric Boards (sFB-4700/sFB-4700x2)
The following are simple checks you can make to determine if there is a fan problem:

Listen to the fan units to determine they are operating

Check for any obstructions restricting airflow through the 4700
If you determine that the fan is not operating, contact a customer service representative.
8.4.2

Identifying Startup Problems


Perform the following steps when you connect the power cord to the 4700:
1. Listen to the fans operation. If they do not operate, the fans may need to be replaced.
Continue to Step 2 to determine if the power supplies are operational. If you determine that
the power supplies are functioning normally and that the fans are faulty, contact a customer
service representative. If the 4700 fan does not function properly at initial startup (there are
no installation adjustments that you can make), contact a customer service representative.
2. Check the power supply LEDs on the rear panel. The power LEDs illuminate immediately
upon the connection of power to the 4700. If the LEDs are not on, the power supplies may
need to be replaced.
3. Check the Link LEDs on the Line Boards front panel for the various ports.
In the event of a system lock-up in the Mellanox 4700, the reset button can be used to reset
and reboot the system. The system has two Reset buttons: one is located on the front panel
of the sFU-40H horizontal fan unit, and one on the sMB-CM management board panel.
To reset the switch, push the button using a thick wire or tip of a pen until the system
reboots. Remove the wire or pen immediately afterwards.
4. Verify that the PC terminal emulation program is set correctly and that the PC is connected
properly to the Console management port if the boot information and CLI prompt are not
displayed.
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Verifying Installation
Chapter 9