1-6 C
HAPTER
1: O
VERVIEW
Figure 1-4 CS/2600 Front Panel
LEDs 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.
3.5" diskette drive
3Com
CS/2600
LED indicators
Reset
switch
Network
Activity
Data
Received
Boot
State
Self
Test
Power
Packet
Received
Table 1-3 Front-Panel LED Indicators
LED Name Normal State Function
Power On On if server is turned on and the power supply generates voltage on
its +5 V DC output.
Self Test Off 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.
Boot State Off 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.
(continued)
Data Received Flashing Flashes when the server detects data being received from an I/O
port. Used to verify proper physical attachment of I/O devices.
Packet Received Flashing 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.
Network
Activity
Flashing 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.
CS2500BookFile : Overview Page 6 Thursday, December 11, 1997 10:44 AM
