Installation guide

37
NOTE:
If the problem persists, contact HP Technical Support for help.
To replace a hot swappable power supply, see "Installing/removing a power supply."
Fan failure
CAUTION:
The HP 5900AF-48XG-4QSFP+ switches require two same direction air flow fan trays to function
properly.
 Do not operate the system with one failed fan tray for more than 24 hours.
 Do not remove the failed fan tray until you are ready for replacing it.
 Do not operate the system without any fan tray for more than 2 minutes.
 Do not operate the system outside of the temperature range 0°C to 45°C (32°F to 113°F) degrees.
Failure to comply with these operating requirements may void the warranty.
When a fan tray has problems, the system status LED is steady red and the system outputs alarm messages.
To replace a failed fan tray, see "Installing/removing a fan tray."
Configuration terminal problems
If the configuration environment setup is correct, the configuration terminal displays booting information
when the switch is powered on. If the setup is incorrect, the configuration terminal displays nothing or
garbled text.
No terminal display
If the configuration terminal displays nothing when the switch is powered on, verify the following items:
 The power supply is supplying power to the switch.
 The console cable is properly connected.
 The console cable has no problem and the terminal settings are correct.
Garbled terminal display
If terminal display is garbled, verify that the following settings are configured for the terminal, for example,
HyperTerminal:
 Baud rate—9,600
 Data bits—8
 Parity—none
 Stop bits—1
 Flow control—none
 Emulation—VT100