H3C Technologies H3C SecPath F5000-A5 Firewall - Manual (Page 31)

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Figure 16 Fastening the captive screws on the interface module
5. After the firewall is powered on, the RUN LED (green) flashes once and then flashes fast (at 8 Hz).
It flashes slowly (at 1 Hz) after the application is loaded. This means that the interface module is
operating correctly. For more information about interface module LEDs, see "
Interface module
LEDs ."
If all of the slots 1 through 4 are installed with an interface module, the RUN LEDs on them light in
the order of slot 1 to slot 4.
Installing a fan tray
1. Examine the warning sign on the fan tray to make sure of the correct direction of the fan tray.
Otherwise, the fan tray cannot be inserted into the slot.
2. Gently push the fan tray slowly along the slide rails into the slot.