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C6900 upstream light blinking
Hello, the upstream light is blinking, is that normal? If not, how to fix it. thank you!
here's how to get the event logs:
Check your cable and make sure there isn't any splitters. Technically your power levels are in spec and you don't have errors but you're borderline and the upstream might have more resistance causing it to not lock enough channels.
When its blinking on upstream/downstream, its searching for a channel to lock and either not finding one or only finding one.
You'll want to check your line.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, bad/old/cheap connectors, or corroded connections. Replace them if you do.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.
You can post a screen snip of the cable connections page and event logs and we can give you a rough idea of the cable connection.
Thank you for helping me!
I don’t have any amplifiers, signal attenuators, or splitters. I connect the modem right where the coax comes into the home.
please see below and let me know if you can see any problem:
Upstream Bonded Channels (Partial Service)
| Channel | Lock Status | US Channel Type | Channel ID | Symbol Rate | Frequency | Power |
| 1 | Locked | ATDMA | 8 | 5120 Ksym/sec | 35600000 Hz | 52 dBmV |
| 2 | Not Locked | Unknown | 5 | 0 Ksym/sec | 16400000 Hz | 0.0 dBmV |
| 3 | Not Locked | Unknown | 6 | 0 Ksym/sec | 22800000 Hz | 0.0 dBmV |
| 4 | Not Locked | Unknown | 7 | 0 Ksym/sec | 29200000 Hz | 0.0 dBmV |
| 5 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
| 6 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
| 7 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
| 8 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
| Upstream Bonded Channels (Partial Service) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Extended Upstream Transmit Power |
Thanks!
Whats your downstream and your event logs look like?
Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 4 405000000 Hz -6.3 dBmV 39.5 dB 0 0 2 Locked QAM256 5 411000000 Hz -6.1 dBmV 39.6 dB 0 0 3 Locked QAM256 6 417000000 Hz -5.7 dBmV 39.8 dB 0 0 4 Locked QAM256 7 423000000 Hz -5.4 dBmV 39.9 dB 0 0 5 Locked QAM256 8 429000000 Hz -5.5 dBmV 39.8 dB 0 0 6 Locked QAM256 9 435000000 Hz -5.7 dBmV 39.7 dB 0 0 7 Locked QAM256 10 441000000 Hz -5.9 dBmV 39.5 dB 0 0 8 Locked QAM256 11 447000000 Hz -6.2 dBmV 39.3 dB 0 0 9 Locked QAM256 12 453000000 Hz -6 dBmV 39.5 dB 0 0 10 Locked QAM256 13 459000000 Hz -6 dBmV 39.5 dB 0 0 11 Locked QAM256 14 465000000 Hz -6.1 dBmV 39.5 dB 0 0 12 Locked QAM256 15 471000000 Hz -6 dBmV 39.5 dB 0 0 13 Locked QAM256 16 477000000 Hz -6 dBmV 39.5 dB 0 0 14 Locked QAM256 17 483000000 Hz -6 dBmV 39.5 dB 0 0 15 Locked QAM256 18 489000000 Hz -5.8 dBmV 39.6 dB 0 0 16 Locked QAM256 19 495000000 Hz -6.3 dBmV 39.4 dB 0 0 17 Locked QAM256 20 507000000 Hz -6.9 dBmV 39.4 dB 0 0 18 Locked QAM256 21 513000000 Hz -6.6 dBmV 39.9 dB 0 0 19 Locked QAM256 22 519000000 Hz -6.4 dBmV 39.9 dB 0 0 20 Locked QAM256 23 525000000 Hz -6.3 dBmV 39.8 dB 0 0 21 Locked QAM256 24 531000000 Hz -6.6 dBmV 39.8 dB 0 0 22 Locked QAM256 25 537000000 Hz -6.7 dBmV 39.8 dB 0 0 23 Locked QAM256 26 543000000 Hz -6.1 dBmV 40 dB 0 0 24 Locked QAM256 27 549000000 Hz -5.9 dBmV 40.3 dB 0 0 I am not sure how to get event logs.
Thank you!