Yamaha 007POTO-G0 Music Mixer User Manual


 
Troubleshooting
270
LS9-16/32 Owner’s Manual
Troubleshooting
Power does not turn on, panel LEDs
and the LCD display do not light
Are the LCD contrast and panel brightness adjusted appropriately? You can adjust the LCD contrast by
holding down the [HOME] key and turning the dial.
Is the LS9’s POWER switch turned on?
If the power still does not turn on, contact your Yamaha dealer.
Sound is not input
Is the optional I/O card installed correctly? ( p. 44)
Is a signal being input from the external device?
Is the input port patched to an input channel? ( p. 99)
Is the GAIN of the internal head amp or external head amp set to an appropriate level? ( p. 47, 57)
Is the EQ attenuator raised? ( p. 115)
Could insert be turned on even though it has not been specified correctly? ( p. 101)
Is the [ON] key indicator of the input channel lit?
Is the fader of the input channel raised?
Sound is not output
Is the optional I/O card installed correctly? ( p. 44)
Is the [ON] key indicator of the STEREO channel lit?
Is an output port patched to the output channel? ( p. 95)
Could LCR be on, and the CSR value be set to 1.0? ( p. 58)
Sound is not output from headphones
or the MONITOR OUT jacks
Is the [PHONES] knob or [LEVEL] knob set to an appropriate volume?
Sound is not loud enough
Is the GAIN of the internal head amp or external head amp set to an appropriate level? ( p. 47, 57)
Is the fader of the input channel raised?
Could the EQ gain be set to an extremely low setting? ( p. 115)
Could the GATE/COMP threshold or ratio be set to an extreme setting? ( p. 117)
Is the EQ attenuator raised? ( p. 115)
Is the fader of the output channel raised?
Try using the various screens of the METER function to check the levels. ( p. 155)
Sound is distorted
Is the word clock set correctly? ( p. 206)
Is the GAIN of the internal head amp or external head amp set to an appropriate level? ( p. 47, 57)
Could the fader of the input channel be raised too high?
Could the fader of the STEREO channel be raised too high?
Could the EQ gain be set to an extremely high setting? ( p. 115)
Sound is output even though it is not
patched to an output channel
Could you have assigned an input channel to direct out? ( p. 103)
Could you have assigned an output channel as the insert out? ( p. 101)
The volume of a specific channel rises
and falls
Could GATE/COMP be set to ducking? ( p. 117)
Operating a fader does not control the
level as you expect
Is SENDS ON FADER selected and INPUT TO MIX FADER and so on active in the panel?
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? ( p. 206)
Could the input signal be unsynchronized?
Could oscillator or talkback be turned on? ( p. 151, 153)
High frequency range is attenuated
Could emphasis be applied? This problem will occur if the input signal status does not match the
emphasis data. ( p. 206)
Could EQ be applied? ( p. 115)
An input signal is being input, but
there’s no monitor output
Is the dimmer applied?
Is the MONITOR C assigned even though its output port has not been connected to external device.
Not enough headroom, especially
when EQ boost is applied
Use the EQ attenuator function to lower the level. ( p. 115)
Signal is delayed Check whether the delay setting for each channel is set correctly. ( p. 95)
Turning a SELECTED SEND encoder
does not change the send level to the
MIX/MATRIX bus
Is the MIX/MATRIX turned on?
Is the MIX/MATRIX [ON] turned on?
Is the MIX bus set to VARI type? ( p. 213)
If the send point is set to POST, could the fader have been lowered?
Can’t save scene memory or library
data
Are you attempting to save the data to a read-only scene/library or a protected scene? ( p. 129)
Can’t save to USB memory
Is the USB memory protected?
Does the USB memory have enough free capacity to save the data?
When formatting the USB memory, format it in FAT32 or FAT16 format.
Could the recorder be playing back?
Can’t transmit/receive MIDI data
Is the MIDI PORT selected correctly? ( p. 178)
Are the mode and channel selected correctly on the transmitting and receiving devices? ( p. 178)
Has an event been assigned for the program change? ( p. 180)
When you recall a scene, some
channels/parameters are not updated
Could that channel or parameter be set to Recall Safe? Could Focus be turned off in the scene you
recalled? Could user level restrictions have been specified? ( p. 139, 140, 192)