Diagnostics
The Cable Modem has five status LEDs for diagnostics. You can monitor the LEDs during installation and during normal operations.
Table 1 shows Cable Modem status LEDs and identifies what each LED light means. This table will help you to diagnose problems.
Function | Color | Definition |
Cable | Green | - dark for no downstream RF carrier present or power |
|
| off |
|
| - flashing slowly(*1) for searching the downstream RF |
|
| carrier |
|
| - flashing(*2) for downstream RF carrier present and |
|
| ranging in progress |
|
| - flashing fast(*3) for registration in progress |
|
| - solid for the Cable Modem registered and ready to |
|
| transfer data |
PC | Green | - dark for no carrier to/from PC present or power off |
|
| - solid for carrier to/from PC present |
Data | Green | - dark for no user data going through the Cable Modem |
|
| or power off |
|
| - flashing for user data going through the Cable Modem |
Test | Amber | - dark for initial |
|
| power off |
|
| - flashing for initial |
|
| progress(*4) or software down loading of the Cable |
|
| Modem in progress |
|
| - solid for |
Power | Green | - dark for power off |
|
| - solid for power on |
|
| Table 1 Status LEDs |
(*1) flashing slowly : flashing every 2 seconds (approximately)
(*2) flashing : flashing every 1 second (approximately)
(*3) flashing fast : flashing every 0.1 second (approximately)
(*4) It takes about 30 seconds to complete the
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