Sony FST-ZUX999 Operating Instructions Manual page 62

There is no sound.
 Turn MASTER VOLUME clockwise
(or press VOLUME + repeatedly on the
remote).
 The headphones are connected to the
 jack.
 Check the CROSS FADER slider
position when using the DJ mode
(page 52, 53).
 Check the speaker connections
(page 19).
 The specified station may have
temporarily stopped broadcast.
 There is no audio output during Rec
Timer.
 No sound is output when transferring
music to the USB device.
There is no sound output from the
headphones.
 Check if the channel (CHANNEL A
or B) for the selected function and the
 CUE ( or ) button you pressed
matches when you are listening to the
sound in DJ mode using only either
CHANNEL A or B.
 When in DJ mode, adjust the
headphones volume with  LEVEL.
When in DJ-off mode, adjust the
headphones volume with MASTER
VOLUME (or VOLUME +/ on the
remote).
 Check the headphones connection.
 Check that the audio source on the
selected channel is played back.

GB
There is no microphone sound.
 Turn MASTER VOLUME clockwise
(or press VOLUME + repeatedly on the
remote) or turn MIC LEVEL clockwise
to adjust the microphone volume.
 Make sure the microphone is
connected to the MIC jack correctly.
 Make sure the microphone is turned
on.
Severe hum or noise.
 Move the system away from sources of
noise.
 Connect the system to a different wall
outlet.
 Install a noise filter (available
separately) to the power cord.
The remote does not function.
 Remove any obstacles between the
remote and the remote sensor on the
unit, and position the unit away from
fluorescent lights.
 Point the remote at the system's sensor.
 Move the remote closer to the system.
There is acoustic feedback.
 Move the microphone away from the
speakers or change the direction of the
microphone.