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Chapter 3 Operation of Front Panel Indicators
Initial Power Up, Calibration, and Registration (AC Power applied)
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 when AC power is applied to the cable modem. Use this chart to troubleshoot the power up, calibration, and registration process of your cable modem.
Note: After the cable modem completes Step 7 (Data Network Registration Complete), the cable modem proceeds immediately to Normal Operations. See Normal Operations (AC Power applied) (on page 24).
Front Panel LED Status Indicators During Initial Power Up, Calibration, and Registration
Part 1, High Speed Data Registration
Step: | 1 |
| 2 | 3 | 4 | 5 | 6 | |
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Front Panel | Self |
| Downstream | Downstream | Ranging | Requesting IP | Request High Speed | |
Indicator | Test |
| Scan | Signal Lock |
| Address | Data Provisioning | |
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| File |
1 | POWER | On |
| On | On | On | On | On |
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2 | DS | On |
| Blinking | On | On | On | On |
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3 | US | On |
| Off | Off | Blinking | On | On |
4 | ONLINE | On |
| Off | Off | Off | Off | Blinking |
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5 | LINK | Off |
| On or Blinking | On or Blinking | On or | On or Blinking | On or |
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| Blinking |
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6 | TEL 1 | On |
| Off | Off | Off | Off | Off |
7 | TEL 2 | On |
| Off | Off | Off | Off | Off |
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8 | BATTERY | | On – When battery is charged |
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Blinks – When battery charge is low
Off – When there is no battery in the unit
Front Panel LED Status Indicators During Initial Power Up, Calibration, and Registration
Part 2, Telephone Registration
Step: | 7 | 8 | 9 | 10 | 11 | |
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Front Panel | Data Network | Requesting | Request | Restarting Voice | Telephone | |
Indicator | Registration | Telephone IP | Telephone | Service | Registration | |
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| Complete | Address | Provisioning File |
| Complete |
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1 | POWER | On | On | On | On | On |
2 | DS | On | On | On | On | On |
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3 | US | On | On | On | On | On |
4 | ONLINE | On | On | On | On | On |
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22 | 4027620 Rev A |