User's Manual

25
appendix a: troubleshooting
• Check that receiver and microphone channels
match
• Recharge or replace batteries
weak or distorted sound
• Check for improperly fitting or clogged
earmolds, or excess ear wax
• Recharge or replace batteries
• Adjust FM gain control (consult your hearing
care professional)
static, intermittent sound, or feedback
• Move away from sources of interference
(metal structures, computers, etc.)
• Make sure that no other microphone is broad-
casting on the same channel
• Clean and check battery contacts
• Check for improperly fitting or clogged
earmolds, or excess ear wax
• Turn down FM gain control (consult your
hearing care professional)
no sound at all
• Check the hearing aid in isolation to make sure
it is not malfunctioning
• Check that receiver mode switch is in correct
position
• Check that microphone mode switch is in
correct position
• Check that receiver and microphone channels match
• Recharge or replace batteries
• Adjust FM gain control
no FM reception
• Confirm that the DAI shoe is properly seated,
undamaged, and set properly
• Check that mode switch is in correct position
• Check that the microphone is on
2163 Lexis User Guide (final) 1/22/03 4:22 PM Page 29