Brand: Motorola
Category: Networking
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for MG7315
Uploaded: Nov. 21, 2025, 7:08 p.m.
Warranty Information
MTRLC LLC warrants this product against defects in material and workmanship for a warranty period of 2 years.
The Motorola MG7315 is an 8x4 DOCSIS 3.0 cable modem with a built-in N300 Wi-Fi router. It connects to standard cable company Internet service and provides shared Internet access to Ethernet-capable and Wi-Fi devices. Basic installation is covered in the Quick Start guide. The device features a Configuration Manager for advanced settings, including wireless network name and password changes, parental controls, firewall settings, and performance tuning. It has 4 Gigabit Ethernet ports for wired connections. Setup involves connecting the coax cable, powering the device, and activating the service with your provider, either online or by phone. The front panel has indicator lights for power, upstream, downstream, online status, Ethernet ports, WLAN, and WPS. Troubleshooting tips are provided for common issues.
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
|---|---|---|
| Cannot make an Internet connection right after installation | Power/coax connections not good | Check connections; ensure power cube is plugged into live outlet; ensure coax cable is live (test with TV). |
| Internet connection stops working | Power issue | Turn MG7315 off and on; check power cube and power button. |
| Slow Internet speed | Paying for lower speed; wireless issue | Confirm speed with a computer plugged into modem; re-read wireless router sections; test at less busy times; check cabling; try without splitter. |
| MG7315 not approved for service | Incorrect information | Check with service provider for list of certified modems; visit www.motorolacable.com/services. |
| Wireless connection slow or dropping | Interference; channel congestion | Move MG7315 away from interfering devices; select less used wireless channel. |
| Forgot Wireless Network Name/SSID or Security Key/Password | Changed values; device display | Check bottom label for default values; remember new values; check connected device display; use Configuration Manager; reset to factory defaults. |
| Wireless interference | Other wireless devices | Place MG7315 far from interfering devices; select less used wireless channel by scanning available networks. |