Motorola 2247/57-62 ユーザーズマニュアル

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If a status indicator light does not look correct, look for these possible problems:
If LED is 
not Lit
Possible problems
Power
Make sure the power switch is in the ON position.
Make sure the power adapter is plugged into the DSL Gateway properly.
Try a known good wall outlet.
Replace the power supply and/or unit.
DSL
Make sure that any telephone has a microfilter installed.
Make sure that you are using the correct cable. The DSL cable is the thinner standard tele-
phone cable.
Make sure the DSL cable is plugged into the correct wall jack.
Make sure the DSL cable is plugged into the DSL port on the DSL Gateway.
Make sure the DSL line has been activated at the central office DSLAM.
Make sure the DSL Gateway is not plugged into a micro filter.
Ethernet 
1,2,3,4
Make sure you are using the Ethernet cable, not the DSL cable. The Ethernet cable is thicker 
than the standard telephone cable.
Make sure the Ethernet cable is securely plugged into the Ethernet jack on the PC.
Make sure the Ethernet cable is securely plugged into the Ethernet port on the DSL Gate-
way.
Try another Ethernet cable if you have one available.
Make sure you have Ethernet drivers installed on the PC.
Make sure the PC’s TCP/IP Properties for the Ethernet Network Control Panel is set to obtain 
an IP address via DHCP.
Make sure the PC has obtained an address in the 192.168.1.x range. (You may have 
changed the subnet addressing.)
Make sure the PC is configured to access the Internet over a LAN.
Disable any installed network devices (Ethernet, HomePNA, wireless) that are not being 
used to connect to the DSL Gateway.