Leds; Cs/2600 Front Panel; Front-Panel Led Indicators - 3Com CS/2500 Installation Manual

1-6 C 1: O
HAPTER

LEDs

Table 1-3 Front-Panel LED Indicators
LED Name Normal State
Power On
Self Test Off
Boot State Off
(continued)
Data Received Flashing
Packet Received Flashing
Network Flashing
Activity
VERVIEW
3Com
Reset
switch
Power
Test
Figure 1-4 CS/2600 Front Panel
The six front-panel LED indicators display operational and diagnostic
activity at power-on and while communications server software is
running. Table 1-3 lists these front-panel LED indicators and their
functions.
Function
On if server is turned on and the power supply generates voltage on
its +5 V DC output.
On for approximately two minutes following power-on or reset.
Remains on if diagnostic tests fail. Flashes during operation to
indicate no boot source or software failure.
On during software boot; turns off if boot is successful. Lights
cyclically or remains on if boot source is not present or responding.
Also indicates hardware failure during operation.
Flashes when the server detects data being received from an I/O
port. Used to verify proper physical attachment of I/O devices.
Flashes when the server detects a packet on the network with
address field matching the server's address. Verifies that packets
are being received by the server.
Flashes when the server detects a packet on the network. The
packet address need not match the server's address. Verifies proper
physical attachment to the network cable and indicates network
load.
CS/2600
Boot
Self Data
State Received
LED indicators
Packet Network
3.5" diskette drive
Received Activity