Table of Contents
Advertisement
To replace a fan tray, pull out the fan tray after it stops rotating. Keep your hands away from fan blades
even if the fan stops rotating; otherwise, the dynamic balance of the fan may be broken, and thus the
fan noise will be increased.
After removing a fan tray, place it in an antistatic bag.
Installing a Fan Tray
1)
Wear an ESD-preventive wrist strap and ensure a good skin contact.
2)
Take out the fan tray from the package, and make sure that the fan tray model matches the device
model.
3)
Holding the handle of the fan tray with one hand and its bottom with the other hand, gently insert
the fan tray into the fan tray slot until the fan tray connector well touches the backplane.
4)
Fasten the screws with a Phillips screwdriver until the fan tray is well seated in the chassis.
You can replace a hot swappable fan tray without powering off the device. To prevent overheat,
you are recommended to complete replacing the fan tray within two minutes.
To avoid damaging the connectors on a fan tray and backplane, slowly insert the fan tray. If you
feel hard when inserting the fan tray, plug out the fan tray and insert it again.
If the captive screw cannot be tightly fixed, check the installation of the fan tray.
Configuration Terminal Failure
After the switch is powered on and the system is normal, the booting information will be displayed on the
configuration terminal. If the configuration system has any faults, there will not be any screen display at
the configuration terminal or the displayed characters will be totally illegible.
Troubleshooting when there is no terminal display
If there is no output information after the configuration is powered on, please check whether:
The power supply is normal
The console cable is properly connected
If no problems are found after the above-mentioned items have been checked, the cause may lie in the
console cable or the settings of the terminal (such as HyperTerminal) parameters. Please perform the
corresponding check.
6-4
Advertisement
Table of Contents
