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Scientific Atlanta DPX2203CTM User Manual

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Front Panel LED Status Indicator Functions 
 
45
 
 
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 7 (Registration Completed), the 
modem proceeds immediately to Normal Operations. See Normal Operations, 
next in this section. 
 
Front Panel LED Status Indicators During Initial Power Up, Calibration, and Registration 
Step → 
1 
2 3 4 5 6 7 
Front Panel 
Indicator 
Self  
Test 
Downstream 
Scan 
Downstream 
Signal Lock 
Ranging Requesting 
IP Address 
Registering Registration 
Completed 
1 
Power 
ON 
ON ON ON ON ON ON 
2 
Receive ON 
OFF  OCCASIONAL 
BLINKING 
OCCASIONAL 
BLINKING 
OCCASIONAL 
BLINKING 
OCCASIONAL 
BLINKING 
ON 
3 
Send ON  OFF 
OFF OCCASIONAL 
BLINKING 
OCCASIONAL 
BLINKING 
OCCASIONAL 
BLINKING 
ON 
4 
Cable ON SLOW 
BLINKING 
1 blink 
MOMENTARY 
ON 
OFF BLINKING 
2 blinks 
BLINKING 
4 blinks 
ON 
5 
PC* ON ON 
or 
BLINKING 
ON 
or 
BLINKING 
ON 
or 
BLINKING 
ON 
or 
BLINKING 
ON 
or 
BLINKING 
ON 
6 
Line 
1 
On 
Off Off Off Off Off Off 
7 
Line 
2 
On 
Off Off Off Off Off Off 
8  
Battery 
Low 
Off 
Off Off Off Off Off Off 
9 
Battery 
Replace 
Off 
Off Off Off Off Off Off 
* The PC LED 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 LED is off.