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If the solutions listed here do not solve your problem, contact your service provider.
Before calling your service provider, try pressing the Reset button on the rear panel of the
CH6643E. Please note, if you press the Reset button, you will lose all your custom
configuration settings, including Firewall and Advanced settings. Your service provider
may ask for the front panel LED status; see Front-Panel LEDs and Error Conditions.
Solutions
Table 1 – Troubleshooting Solutions
Check that the CH6643E is properly plugged into the electrical outlet.
Check that the electrical outlet is working.
Press the Power On/Off button of CH6643E.
Cannot send or
receive data
On the front panel, note the status of the LEDs and refer to Front-Panel
LEDs and Error Conditions to identify the error. If you have cable TV,
check that the TV is working and the picture is clear. If you cannot
receive regular TV channels, the data service will not function.
Check the coaxial cable at the CH6643E and wall outlet. Hand-tighten,
if necessary.
Check the IP address.
Check that the Ethernet cable is properly connected to the CH6643E
and the computer.
If a device is connected via the Ethernet port, verify connectivity by
checking the LINK LEDs on the rear panel.
Wireless client(s)
cannot send or
receive data
Perform the first four checks in “Cannot send or receive data.”
Check the Security Mode setting on the Wireless Security Page:
If you enabled WPA and configured a passphrase on the CH6643E,
be sure each affected wireless client has the identical passphrase. If
this does not solve the problem, check whether the wireless client
supports WPA.
If you enabled WEP and configured a key on the CH6643E, be sure
each affected wireless client has the identical WEP key. If this does
not solve the problem, check whether the client’s wireless adapter
supports the type of WEP key configured on the CH6643E.
To temporarily eliminate the Security Mode as a potential issue,
disable security.
After resolving your problem, be sure to re-enable wireless security.
On the Wireless Access Control Page, be sure the MAC address for
each affected wireless client is correctly listed.
Slow wireless
transmission speed
with WPA enabled
On the Wireless Primary Network Page, check whether the WPA
Encryption type is TKIP. If all of your wireless clients support AES,
change the WPA Encryption to AES.
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