Appendix 1: Troubleshooting
Trouble Case
Power Indicator
Off
ADSL Off
LAN Off
D840R ADSL2+ Router User Guide
Chapter 6 Appendix
Check if the power adapter is
Connected properly.
Check if the power adapter is matched.
Check if the ADSL cable connection is
OK.
Make sure the telephone line is OK
you're your phone.
Check the phone line cabling is right.
Check the Ethernet cable is OK.
Make sure the PC's NIC indicator is ON.
Make sure the NIC works normally.
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Troubleshooting