Scientific Atlanta DPX2203, EPX2203 manual Functions of the Front Panel Lights

Functions of the Front Panel Lights

Initial Power Up, Calibration, and Registration

The following chart illustrates the sequence of steps and the corresponding appearance of the front panel lights 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.

Note: After the cable modem completes step 8 (Registration Completed), the modem proceeds immediately to Normal Operations, on page 12.

Front Panel Lights During Initial Power Up, Calibration, and Registration

	Step￿	1	2	3	4	5	6	7	8
Front Panel		Power	Self	Downstream	Downstream	Ranging	Requesting	Registering	Registration
	Light	Up	Test	Scan	Signal Lock		IP Address		Complete
1	Power	On	On	On	On	On	On	On	On
2	Receive	Off	On	Off	Off	Occasional	Occasional	Occasional	On
						Blinking	Blinking	Blinking
3	Send	Off	On	Off	Off	Occasional	Occasional	Occasional	On
						Blinking	Blinking	Blinking
4	Cable	Off	On	Slow Blinking	Momentary	Off	Blinking 2	Blinking 4	On
				1 Blink	On		Blinks	Blinks
5	PC1	Off	On	Off, On or	Off, On or	Off, On or	Off, On or	Off, On or	Off or On
				Blinking	Blinking	Blinking	Blinking	Blinking
6	Line 1	Off	On	Off	Off	Off	Off	Off	Off
7	Line 2	Off	On	Off	Off	Off	Off	Off	Off

1The PC light is on whenever a PC is connected to the modem, and it blinks to indicate that data is being transferred. If the modem is used to provide telephone service only and is not connected to a PC, the PC light is off.

Continued on next page

4004041 Rev A WebSTAR DPX2203 or EPX2203 VoIP Cable Modem User’s Guide 11