User guide

A
N EDUCATOR’S GUIDE
•
61
Troubleshooting
If the student reports a problem during use of the
sound processor and personal FM system, a first
step would be to listen to the sound processor
alone, as per the instructions in the section on
troubleshooting the sound processor in this
booklet (Chapter 6).
If the sound processor is working properly, evaluate
the FM system alone.
Body wor
n FM receivers can often be monitored
with headphones. The
Phonak MLxS may be
plugged into a speaker through the MicroLink CI.
Ha
ve someone speak into the transmitter, and
check the quality of the sound through the receiver.
If a speaker is not available, the MLxS can be
connected to the MicroLink adapter and plugged
into the ESPrit™ 3G -only if there is a program
location in which the monitor earphones are
enabled and the rotary control is set for
microphone sensitivity - (you may need to
confirm these settings with the cochlear implant
audiologist). Reduce the microphone sensitivity to
z
ero and ha
v
e someone speak into the tr
ansmitter
to listen to the FM system alone
. The cord on the
monitor earphones acts as an antenna, so some
lo
w lev
el hum ma
y be pick
ed up:
this is normal.
With the
Phonak MicroLink Freedom receiver, you
will need to listen through the Freedom sound
processor. To listen to the FM system alone, reduce
the microphone sensitivity on the processor to
zero. The monitor headphones will time-out after
90 seconds, and can be re-activated by pressing the
Increase and Decrease buttons on the processor at
the same time.
If you are unable to listen to the receiver alone
and encounter a problem when listening to FM
transmission through the ESPrit 3G or Freedom
processor, the problem could be either the FM
receiver or the accessory jack on the sound
processor (assuming you have listened to the
processor alone, and did not find a problem).
For the ESPr
it 3G, ensure that the MicroLink
adapter is in the FM+M position (reducing the
microphone sensitivity is the recommended
method for listening to FM only). Ensure the
connection is secure, and that the processor was
turned off, then back on,
to recognize the
accessory. The MLxS should be in the “double dot”
position.
To evaluate the accessor
y jack, plug in
another accessory, such as the lapel microphone,
or personal audio cable (attach this to an audio
source such as a CD pla
y
er that is playing music).
If the accessory jack works, the problem may lie
with either the MicroLink adapter or the MLxS,
thus the impor
tance of being ab
le to evaluate the
MLxS alone.
For the Freedom processor
,
ensure the processor
is in external accessory mode. The simplest way to
do this is to turn off the processor, then turn it