Chapter 7 Fault diagnosis
Some simple trouble-shooting instructions are provided in this chapter. If more serious faults arise, please contact a
qualified technician.
7.1 Digital infrared wireless microphone
Fault
Analysis
Solution
Cannot start up.
The battery is not charged.
(When using the lithium-ion battery)
The battery is not charged when leaving
the factory, please fully charge the battery
before using (refer to chapter
5
).
No power supply (when using the power
adapter).
Please connect the power supply correctly
and check the DC socket
Cannot speak.
Receiver working indicating light is off.
Check the I/O cable connecting the
receiver with the main unit.
Sensitivity of main unit is muted.
Adjust the sensitivity of main unit.
Microphone is muted.
Adjust the volume of microphone.
Cannot operate the buttons.
Infrared receiver is directly under
sunshine or spotlight.
Reposition it and avoid direct sunshine or
spotlight.
Is there any obstacle between the
receiver and the microphone?
Is the receiver suitable for the height
and are all microphones in the coverage
area?
Install the receiver in a suitable height and
mount them in that way not to block the
direct view.
The cable between the receiver and the
main unit is not connected.
Connect the cable.
Battery working time is
short.
Not fully charged.
Charging for 2.5 hours can fully charge
the battery.
Out of battery service life.
Use new batteries (complete set).
Note:
all new battery can be charged
about 500 times.
7.2 Digital infrared wireless system main unit
Fault
Analysis
Solution
Cannot startup.
No power supply or no power cord
connected to main unit.
Connect the power supply with the power
cord.
No audio output from the
speaker.
Improper volume control.
Adjust the volume to proper position.
The cable between the speaker and the
main unit is not connected completely
Connect the cable.
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