Cisco 1003 User Manual page 42

Troubleshooting the Cisco 1003 or Cisco 1004 Router
The following table describes the LEDs.
LED
Power
System OK
ISDN B1
ISDN B2
LAN TX
and
LAN RX
Collision
(Ethernet)
Link OK
(Ethernet)
For more complete network troubleshooting information, refer to the
Troubleshooting Internetworking Systems printed publication or UniverCD.
42 Cisco 1003 and Cisco 1004 User Guide
State Description
On steadily 12 VDC is being supplied to the router and the internal
DC-to-DC converter is operational.
Off Power is not reaching the router. Verify that the power supply
is plugged into the wall receptacle, and that the cable from
the power supply to the router is connected. If the power
supply is working properly, the router might be defective.
On steadily The router has passed the power-on diagnostic tests and is
working properly.
Blinking once The system LED blinks once per second when running
per second startup diagnostics or decompressing the software image. If
the system LED continues to blink after the startup sequence,
the router is in ROM monitor mode.
Blinking six times The system LED blinks six times per second when loading
per second the software image from Flash memory or a TFTP server.
Off An error condition has occurred. Disconnect the power cord;
then reconnect it to re-establish power to your router. If the
LED remains off, contact your system administrator.
On steadily The call on the BRI B channel 1 line is connected.
On steadily The call on the BRI B channel 2 line is connected.
Flickering The Ethernet LAN connection is transmitting and receiving
data normally.
On Data collisions are being detected. Occasional collisions are
normal. If they happen often, contact your system
administrator.
On The router senses the Ethernet link integrity signal, indicating
normal operation.