14
Type of
fault
Likely cause
Action
The sound
quality
is poor.
1. The microphone and
receiver deviations are not
set to the same value.
2. The microphone sensitivity
(Mic sensitivity) is set too
high.
3. Nearby channels are causing
interference.
4. The internal antenna for
the student microphone is
too weak.
5. Several microphones are
being used on the same
channel at the same time.
1. Adjust the deviation on the
microphone (refer to 2.4)
or receiver (refer to receiver
manual).
2. Adjust the microphone
sensitivity (refer to 2.4).
3. Change the channel
settings for the micro-
phone (refer to 2.4) and
receiver (refer to receiver
user manual).
4. Connect the wire antenna.
5. Use only one at a time.
The lamp
does not come
on when the
microphone is
charged.
1. Poor contact between the
microphone and charger.
2. The battery is low.
3. An alkaline battery has
been inserted in the micro-
phone.
1. Clean the contacts at the
bottom of the microphone
and in the charger.
2. Change the battery.
3. Never use alkaline batteries.
The battery
quickly becomes
discharged.
The battery is worn out.
Replace with a new battery.
The student
microphone
cannot be
switched on
in read-aloud
mode.
The Speech key has not been
activated.
Activate the Speech key (refer
to 2.4).
It is not possible
to change
channels.
The SET button has not
been pressed to confirm the
selection of a channel.
Change channel and press
SET (refer to 2.4).
ENGLISH
