Table of Contents
Advertisement
Front Panel LED Status Indicator Functions
Initial Power Up, Calibration, and Registration
The following chart illustrates the sequence of steps and the corresponding
appearance of the cable modem front panel LED status indicators during power-up,
calibration, and registration on the network. Use this chart to troubleshoot the power
up, calibration, and registration process of your cable modem.
Note: After the cable modem completes step 8 (Registration Complete), the modem
proceeds immediately to step 9. See the chart in Normal Operations (on page 30).
Front Panel LED Status Indicators During Initial Power-Up, Calibration, and Registration
Step
1
Front Panel
Power
Indicator
Up
1
POWER
On
2
DS 1
Blinks
DS 2-3
Blinks
3
US
Blinks
4
ONLINE
Blinks
5
LINK
Off
4015259 Rev B
2
3
4
Self
Downstream
Downstream
Test
Scan
Signal Lock
On
On
On
On
Blinks
On
1 sec
On 1
Off
Off
sec
On
Off
Off
1 sec
On
Off
Off
1 sec
On
Off - When no devices are connected to the Ethernet or USB ports
1 sec
On - When devices are connected to the Ethernet or USB ports
Blinks - When data activity is present
Front Panel LED Status Indicator Functions
5
6
Ranging
Requesting
IP Address
On
On
On
On
Off
Off
Blinks
On
Off
Off
7
8
Registering
Registration
Complete
On
On
On
On
Off
On when
wideband
operation is
enabled on
that channel
Off when
wideband
operation is
not available
on that
channel
On
On
Blinks
On
On
29
Hide quick links:
Advertisement
Table of Contents
