Introduction
Before You Begin | Installation & Configuration | Troubleshooting | FAQ | Glossary | License |
The model number and Standby button position on your cable modem may be different than in the illustrations and screen images in this guide.
1
2
3
4
5
6
7
Top and Front Panel
For added security, you can press the Standby button (1) to suspend your Internet connection. No data is transmitted or received and the Standby button lights. All other lights turn off until you press the Standby button again.
The lights provide information about power, communications, and errors:
Key | Light | Flashing | On |
2 | Power | Startup diagnostics in progress | The cable modem is powered on |
3 | Receive | Scanning for a receive | The downstream channel is |
|
| (downstream) channel connection | connected |
4 | Send | Scanning for a send (upstream) | The upstream channel is connected |
|
| channel connection. |
|
5 | Online | Scanning for a network | The startup process is complete |
|
| connection |
|
6 | Activity | Transmitting or receiving data | Transferring a large amount of data |
7 | Standby | This light does not flash | Internet service is blocked because |
|
|
| the Standby button was pressed. If |
|
|
| this light is on, all other lights are off. |
During normal operation, the Power, Receive, Send, and Online lights are on and the Activity light flashes when the cable modem is transferring data.
X | 2 | SURFboard Cable Modem SB4220 Series User Guide |
