Troubleshooting - Yamaha QL5 Owner's Manual

Troubleshooting

Troubleshooting
A FAQ section is available on the Yamaha Pro Audio site.
http://www.yamahaproaudio.com/
Power does not turn on; panel LEDs and the LCD
display do not light.
 Is the QL
' s power switch turned on?
 Is the power cable connected to a proper AC outlet?
 Is the power cable plug inserted all the way - has it
clicked and locked in securely?
 If the power still does not turn on, contact your Yamaha
dealer.
The unit is not receiving an input signal.
 Did you correctly set the UNIT ID and the DIP
switches on the I/O device connected to the QL
before turning on the power to the devices?
 Is the DANTE SETUP for the unit appropriate?
 Are the source devices delivering an appropriate sig-
nal?
 Is the SIG indicator on the I/O device lit?
 If a phantom-powered microphone is connected to
the QL unit, are the I/O device
' s +48V MASTER ON/OFF switch, and
switch, QL
+48V button of each channel set to on?
 Is the GAIN of the internal head amp, external head
amp, or I/O device set to an appropriate level?
 Is the input port patched to an input channel?
 Is the [ON] key indicator of the input channel lit?
 Is the fader of the input channel raised?
 Are EQ
' s attenuators raised?
 Could the insert be turned on even though it has not
been specified correctly?
 If you are using an optional I/O card, is it installed
correctly?
Sound is not output from headphones or the
MONITOR OUT jacks.
 Is the [PHONES] knob or monitor level set to an
appropriate volume?
 Is the monitor fader set to an appropriate level?
 Has the monitoring source been selected?
 Could the DIMMER be applied?
 Press the MONITOR button, then check the MONITOR
area on the display.
The sound level is too low.
 Is the GAIN or digital gain on the head amplifier,
external head amp device or I/O device set to an
appropriate level?
 Is the fader of the input channel raised?
 Could the EQ gain be turned down excessively?
 Are EQ
' s attenuators raised?
 Could the GATE/COMP threshold or ratio setting be
set to an extreme value?
 Is the fader of the output channel raised?
 Try using the various screens of the METER function
to check the levels.
48
' s +48V MASTER
Owner's Manual
 Is the DCA fader assigned to that channel raised?
 Could MUTE MASTER be turned on for the channel
assigned to a MUTE group?
Sound is distorted.
 Is the word clock set correctly?
 Is the GAIN of the internal head amp, external head
amp, or I/O device set to an appropriate level?
 Was Gain Compensation turned on when analog
gain is not appropriate? Or, was the analog gain
raised to an extreme while the Gain Compensation is
turned on?
 First turn the Gain Compensation function off, set the
analog gain to an appropriate level, and then turn Gain
Compensation back on.
 Could the digital gain be set to an extremely high set-
ting?
 Could the fader of the input channel be raised too
high?
 Could the STEREO channel fader be raised too
high?
 Could the EQ gain be set to an extremely high set-
ting?
 Is the latency set too low on the DANTE SETUP
screen?
Sound is output even though it is not patched to an
output channel.
 Could you have assigned an input channel to direct
out?
 Could you have assigned an output channel as the
insert out?
The volume of a specific channel rises and falls.
 Could DYNAMICS 1/2 be set to ducking or to an
extreme parameter value?
Operating a fader does not control the level as you
expect.
 Could the function access area indicate MIX/MTRX
ON FADER? And could SENDS ON FADER mode
be engaged?
Only the sound of a specific channel is heard from
the MONITOR OUT or PHONES jack.
 Could a [CUE] key be on?
Noise occurs from an externally connected recorder
or other device.
 Is the word clock set correctly?
 Could the input signal be unsynchronized?
 Could the oscillator or talkback be turned on?
High frequency range is attenuated.
 Could emphasis be applied? This problem will occur
if the input signal status does not match the empha-
sis data.
 Could EQ be applied?