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Troubleshooting
16 STAGEPAS 600BT/STAGEPAS 400BT Owner’s Manual
Troubleshooting
Power does not turn on.
Did you firmly and securely connect the power cord?
Power shuts down suddenly.
Are the vents of the mixer blocked?
Since inadequate ventilation can result in overheating the
mixer, the power may be turned off automatically to
protect the system from overheating. Arrange the
ventilation for cooling, then turn on the power again.
No sound is heard.
Did you connect the mixer’s SPEAKERS jacks and the
speakers’ input jacks using the proper speaker cables?
Did you firmly and securely connect the speaker
cables?
Is a speaker other than the included speaker
connected to the mixer’s SPEAKERS jacks?
Please connect the included speaker (STAGEPAS 600BT:
MODEL 600S; STAGEPAS 400BT: MODEL 400S).
Did you use the included speaker cables?
If you use a commercially-available speaker cable with a
metal-housing connector, the cable will be shorted when
the connector touches other metal, resulting in no sound
being produced.
Is the POWER LED flashing at intervals?
There may be a short in the speaker cable or the
connection may be faulty. Check that the speaker cable
is not scratched and is connected properly to the mixer,
then reapply the power.
For channels 7/8 (STAGEPAS 600BT) or channels 5/6
(STAGEPAS 400BT), are both phone and RCA-pin
jacks connected at the same time?
Or, for channels 9/10 (STAGEPAS 600BT) or channels
7/8 (STAGEPAS 400BT), are both phone and stereo
mini jacks connected at the same time?
For channels 7/8 (STAGEPAS 600BT), or channels 5/6
(STAGEPAS 400BT), the phone jack takes priority. For
channels 9/10 (STAGEPAS 600BT), or channels 7/8
(STAGEPAS 400BT), the stereo mini jack takes priority.
Is the POWER LED flashing continuously?
If the internal power amplifier section is excessively
overloaded, the amplifier will be muted for protection. The
mixer will automatically reset itself after a while.
Sound is distorted or noise is produced
Are the LEVEL controls of all relevant channels and/or
the MASTER LEVEL control set too high?
Is the MIC/LINE switch of the corresponding channel
set to MIC?
If the input level from the source is high, setting the MIC/
LINE switch to MIC may result in a distorted sound. Set
the switch to LINE position.
Is the volume of the connected device too high?
Lower the volume of the external device.
Is the speaker cable or the power cord located near the
input cables?
Please keep it away from the input cables.
Sound is not loud enough
Are the LEVEL controls of all relevant channels and/or
the MASTER LEVEL control set too low?
Is the MIC/LINE switch of the corresponding channel
set to LINE?
Turn the LEVEL control to the minimum (zero). Set the
switch to the MIC position, then slowly raise the LEVEL
control.
Is the volume of the connected device too low?
Raise the volume of the external device.
Is the PHANTOM switch set to On when using a
microphone that requires phantom power?
The high sounds and low sounds are
unbalanced.
Are the equalizer controls raised or lowered too much?
Set the equalizer controls to the center position.
Is the speaker properly outputting high-frequency
range signals?
If not, check the “Protective circuit (poly switch)” note in
the Notice section.
Cannot connect Bluetooth / Bluetooth audio
sound cuts intermittently
The unit may be connected to a different Bluetooth
device.
Cut the current Bluetooth connection, and then connect
to the desired Bluetooth device.
The STAGEPAS may be located too far away from the
Bluetooth device.
The maximum distance between the STAGE PAS and a
Bluetooth device should be 10 meters. Locate the
Bluetooth device closer to the STAGEPAS.
Your Bluetooth device may not support the A2DP
profile.
Use a Bluetooth device that supports A2DP.
The unit may be located in the vicinity of a device that
emits electro-magnetic waves at a frequency of 2.4
GHz (such as a wireless microphone transmitter,
wireless LAN device, microwave oven, etc).
Locate the STAGEPAS away from any device that emits
electro-magnetic waves.
If your Bluetooth device also features a wireless LAN
function, turn off the function, and use only the Bluetooth
function.
If a problem persists, please contact your Yamaha dealer.
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