AT&T TL8900 User Manual page 41

Appendix
Troubleshooting
Make sure the headset is sitting properly in the charger to
X
charge.
Unplug the unit's electrical power. Wait for 15 seconds, then
X
plug it back in. Allow up to one minute for the cordless headset
and headset charger to reset.
Clean the cordless headset and headset charger charging
X
contacts each month using a pencil eraser or dry cloth.
Your headset or headset charger might be defective. Refer to
X
the Limited warranty section on pages 48-50 for
further instructions.
Common cure for electronic equipment.
If the unit does not seem to be responding normally, try putting
X
the cordless headset in its charger. If it does not fix the problem,
do the following (in the order listed):
1. Disconnect the power to the headset charger.
2. Remove the cordless headset battery.
3. Wait a few minutes.
4. Connect the power to the headset charger.
5. Install the battery again, and then place the cordless
headset into the headset charger.
6. Wait for the cordless headset to reestablish its connection
with the telephone base. Allow up to one minute for this to
take place.
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