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WebSTAR Model DPC2100 and EPC2100 Cable Modem User's Guide
Front Panel Status Indicator Functions
22
Initial Power Up, Calibration, and Registration
The following chart illustrates the sequence of steps and the corresponding
appearance of the front panel status indicators on the cable modem 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.
After the cable modem completes step 7 (Registration Completed), the
modem proceeds immediately to step 8. See the chart in Normal Operations,
next in this section.
Front Panel LED Status Indicators During Initial Power Up, Calibration, and Registration
Front Panel LED Status Indicators During Initial Power Up, Calibration, and Registration
Step
1
2
Front Panel
Self
Downstream
Indicator
Test
Scan
1 POWER
ON
ON
2
RECEIVE
ON
OFF
3
SEND
ON
OFF
SLOW
4 CABLE
ON
BLINKING
1 blink
ON
5
PC
ON
or
BLINKING
Normal Operations
The following chart illustrates the appearance of the cable modem front panel
LED status indicators during normal operations.
Front Panel LED Status Indicators During Normal Operations
Front Panel LED Status Indicators During Normal Operations
Step
Front Panel
Indicator
1 POWER
ON
2 RECEIVE
BLINKS - To indicate data is being transferred between the modem and the network.
3
SEND
BLINKS - To indicate data is being transferred between the modem and the network.
4 CABLE
ON
5
PC
ON - When a single device is connected to either the Ethernet or USB port and no data is being
sent to or from the modem.
BLINKS - LED blinks when only one Ethernet or USB device is connected and
data is being transferrd between the consumer premise equipment (CPE) and the cable modem.
OFF - When no devices are connected to either the Ethernet or USB ports.
Note: With both Ethernet and USB devices connected to the modem at the same time, when data is being
transferred through only one of the devices (Ethernet or USB), the indicator will illuminate continuously.
Whenever data is being sent through both data ports (Ethernet and USB) simultaneously, the indicator will
blink as described above.
3
4
Downstream
Ranging
Signal Lock
ON
ON
OCCASIONAL
OCCASIONAL
OCCASIONAL
BLINKING
BLINKING
OCCASIONAL
OCCASIONAL
OFF
BLINKING
MOMENTARY
OFF
ON
ON
ON
or
or
BLINKING
BLINKING
8
Normal Operations
5
6
Requesting
Registration
Registering
IP Address
Completed
ON
ON
OCCASIONAL
BLINKING
BLINKING
OCCASIONAL
BLINKING
BLINKING
BLINKING
BLINKING
2 blinks
4 blinks
ON
ON
or
or
BLINKING
BLINKING
7
ON
ON
ON
ON
ON
T10683
T10969
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