Upstream Channels not locked

[beckwith42]

Hi,

I am looking at my newly installed modem and noticed several channels are showing as not locked.  Additionally I'm seeing a flurry of warnings in the logs.  Is this expected?

Upstream Bonded Channels (Partial Service)

Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 5 5120 Ksym/sec 36500000 Hz 45 dBmV 2 Not Locked Unknown 6 0 Ksym/sec 30100000 Hz 0.0 dBmV 3 Not Locked Unknown 7 0 Ksym/sec 23700000 Hz 0.0 dBmV 4 Not Locked Unknown 8 0 Ksym/sec 17300000 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

Thu Aug 06 08:31:09 2020	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=28:80:88:d4:57:a0;CMTS-MAC=00:9e:1e:59:cb:90;CM-QOS=1.1;CM-VER=3.1;
Thu Aug 06 08:30:19 2020	Critical (3)	16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=28:80:88:d4:57:a0;CMTS-MAC=00:9e:1e:59:cb:90;CM-QOS=1.1;CM-VER=3.1;
Thu Aug 06 08:30:19 2020	Critical (3)	Ranging Request Retries exhausted;CM-MAC=28:80:88:d4:57:a0;CMTS-MAC=00:9e:1e:59:cb:90;CM-QOS=1.1;CM-VER=3.1;

Thanks,

Jon

[BruceW]

You should have a Comcast premise tech take a look at this. At least 3 upstream channels should be locked. You may have a trap on your coax line.

Call the phone number on your bill or 1-800-Comcast, or use one of the options on https://www.xfinity.com/support/contact-us/. Insist they send a tech out to identify the cause and correct it.