Netgear AC1750 オーナーマニュアル

ページ / 297
Troubleshooting 
96
AC1750 WiFi Cable Modem Router 
Use LEDs to Troubleshoot
The following table provides help when you are using the LEDs for troubleshooting.
Table 3.  Troubleshooting with the LEDs
LED Behavior
Action
All LEDS are off when the modem 
router is plugged in.
• 
Make sure that the power cord is properly connected to your 
modem router and that the power supply adapter is properly 
connected to a functioning power outlet. 
• 
Make sure that you are using the 12 VDC power adapter from 
NETGEAR for this product.
• 
If the error persists, this indicates a hardware problem. Contact 
technical support.
All LEDs stay on.
• 
Clear the configuration of the modem router to its factory defaults. 
This operation sets the IP address of the modem router to 
192.168.0.1. See 
• 
If the error persists, this indicates a hardware problem. Contact 
technical support.
LAN LED is off for a port with an 
Ethernet connection.
• 
Make sure that the Ethernet cable connections are secure at the 
modem router and at the hub or computer.
• 
Make sure that power is turned on to the connected hub or 
computer.
• 
Be sure that you are using the correct cable.
Internet LED is off and the modem 
router is connected to the cable 
television cable.
• 
Make sure that the coaxial cable connections are secure at the 
modem router and at the wall jack.
• 
Make sure that your cable Internet provider provisioned your cable 
Internet service. Your provider can verify that the signal quality is 
good enough for modem router service.
• 
Remove any excessive splitters that on your cable line. Run a 
“home run” back to the point where the cable enters your home.
Cannot Log In to the Modem Router
If you cannot access the modem router from a computer on your local network, check the 
following:
If you are using a WiFi connection, make sure that your computer or mobile device is 
connected to the correct WiFi network.
If your computer is connected to the modem router with an Ethernet cable, check the 
connection.
Make sure that your computer’s IP address is on the same subnet as the modem router. 
If you are using the recommended addressing scheme, the address of your computer is 
in the range of 192.168.0.10 to 192.168.0.254.