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wingbike's avatar
wingbike
Aspirant
Jul 28, 2025

My downstream LED went out a few days ago but the CM3000 is fully functional

I as well have the Xfinity Gigabit X2 plan. My downstream LED went out a few days ago but the CM3000 is fully functional and all 32 downstream channels are locked. I installed this modem on 1/15/202...
cm3000
wingbike's avatar
wingbike
Aspirant
Jul 30, 2025
TimePriorityDescription
Wed Jul 30 09:36:15 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 08:55:11 2025(Notice (6))CM-STATUS message sent. Event Type Code: 4; Chan ID: 13 15 17 19 21 24 25 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 193 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 08:54:55 2025(Warning (5))MDD message timeout;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 08:54:52 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 07:32:29 2025(Notice (6))CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 07:24:45 2025(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 07:22:10 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 12 13; New Profile: 10 13.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 06:31:25 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 06:22:55 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 10 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 06:02:55 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 12 13; New Profile: 10 13.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 30 05:45:38 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 22:20:10 2025(Notice (6))CM-STATUS message sent. Event Type Code: 24; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 22:15:06 2025(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 22:15:04 2025(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 22:15:00 2025(Notice (6))CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 21:45:49 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 20:53:40 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 11 13; New Profile: 12 13.;CM-;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 20:44:10 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 20:41:49 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 20:17:10 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 20:12:10 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 19:52:10 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 10 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 18:52:10 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 12 13; New Profile: 10 13.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 18:32:10 2025(Notice (6))US profile assignment change. US Chan ID: 41; Previous Profile: 10 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 18:15:01 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 17:23:53 2025(Notice (6))CM-STATUS message sent. Event Type Code: 8; Chan ID: 1; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 17:23:47 2025(Critical (3))16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 17:23:47 2025(Critical (3))Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 17:23:47 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 15:50:09 2025(Notice (6))CM-STATUS message sent. Event Type Code: 8; Chan ID: 1; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 15:49:55 2025(Critical (3))16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 15:49:55 2025(Critical (3))Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 15:49:55 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 15:36:19 2025(Notice (6))CM-STATUS message sent. Event Type Code: 8; Chan ID: 1; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 15:36:08 2025(Critical (3))16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 15:36:08 2025(Critical (3))Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 15:36:08 2025(Critical (3))Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 07:27:28 2025(Notice (6))CM-STATUS message sent. Event Type Code: 8; Chan ID: 1; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
Tue Jul 29 07:27:04 2025(Warning (5))Dynamic Range Window violation
Tue Jul 29 07:27:04 2025(Warning (5))RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
   
FURRYe38's avatar
FURRYe38
Guru - Experienced User
Jul 30, 2025

Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.

 

Please post a copy and paste of the modems connection status log page.