Led Functions; Error Messages - 3Com ACCESSBUILDER 4000 Installation Manual

4-4 C 4: T
HAPTER ROUBLESHOOTING

LED Functions

LED Name
Power (green)
Status (yellow)
Activity (green)

Error Messages

3 If the system still does not respond to commands, power off the
AccessBuilder and terminal and check the keyboard cable connection to
ensure it is secure.
4 Power on the AccessBuilder and the terminal again.
5 Check the state of the LEDs on the front of the AccessBuilder as shown in
Table 4-1.
The following table provides additional troubleshooting information that
may be obtained through observation of the front panel LEDs.
Table 4-1 LED Functions
Behavior
On
Off
On
Blinking
Off
On
Blinking
The AccessBuilder automatically generates an error message at the console
port whenever an error occurs. These messages are useful in determining
problems causes.
Function
Always lit as long as the system is turned on.
Off while the system is in self-test or boot mode. If the
Power LED is also off, indicates that there is no power to
the system.
Always lit as long as the system runs normally.
Blinks only if the system fails its boot sequence, or there
is an unrecoverable problem detected by the software
after the system is operational. If this happens, contact
your AccessBuilder support representative for further
instructions.
Indicates there is no current network activity through
the main processor board's LAN port. If the Power LED
is also off, indicates that there is no power to the
system.
Indicates heavy network traffic through the main
processor board's LAN port.
Indicates there is light/intermittent network activity.