Troubleshooting
270
LS9-16/32 Owner’s Manual
Troubleshooting
Power does not turn on, panel LEDs
and the LCD display do not light
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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.
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Is the LS9’s POWER switch turned on?
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If the power still does not turn on, contact your Yamaha dealer.
Sound is not input
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Is the optional I/O card installed correctly? (
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Is a signal being input from the external device?
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Is the input port patched to an input channel? (
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Is the GAIN of the internal head amp or external head amp set to an appropriate level? (
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Is the EQ attenuator raised? (
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Could insert be turned on even though it has not been specified correctly? (
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Is the [ON] key indicator of the input channel lit?
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Is the fader of the input channel raised?
Sound is not output
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Is the optional I/O card installed correctly? (
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Is the [ON] key indicator of the STEREO channel lit?
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Is an output port patched to the output channel? (
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Could LCR be on, and the CSR value be set to 1.0? (
Sound is not output from headphones
or the MONITOR OUT jacks
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Is the [PHONES] knob or [LEVEL] knob set to an appropriate volume?
Sound is not loud enough
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Is the GAIN of the internal head amp or external head amp set to an appropriate level? (
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Is the fader of the input channel raised?
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Could the EQ gain be set to an extremely low setting? (
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Could the GATE/COMP threshold or ratio be set to an extreme setting? (
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Is the EQ attenuator raised? (
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Is the fader of the output channel raised?
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Try using the various screens of the METER function to check the levels. (
Sound is distorted
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Is the word clock set correctly? (
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Is the GAIN of the internal head amp or external head amp set to an appropriate level? (
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Could the fader of the input channel be raised too high?
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Could the fader of the STEREO channel be raised too high?
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Could the EQ gain be set to an extremely high setting? (
Sound is output even though it is not
patched to an output channel
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Could you have assigned an input channel to direct out? (
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Could you have assigned an output channel as the insert out? (
The volume of a specific channel rises
and falls
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Could GATE/COMP be set to ducking? (
Operating a fader does not control the
level as you expect
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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
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Could a [CUE] key be on?
Noise occurs from an externally
connected recorder or other device
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Is the word clock set correctly? (
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Could the input signal be unsynchronized?
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Could oscillator or talkback be turned on? (
High frequency range is attenuated
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Could emphasis be applied? This problem will occur if the input signal status does not match the
emphasis data. (
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An input signal is being input, but
there’s no monitor output
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Is the dimmer applied?
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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
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Use the EQ attenuator function to lower the level. (
Signal is delayed
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Check whether the delay setting for each channel is set correctly. (
Turning a SELECTED SEND encoder
does not change the send level to the
MIX/MATRIX bus
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Is the MIX/MATRIX turned on?
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Is the MIX/MATRIX [ON] turned on?
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Is the MIX bus set to VARI type? (
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If the send point is set to POST, could the fader have been lowered?
Can’t save scene memory or library
data
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Are you attempting to save the data to a read-only scene/library or a protected scene? (
Can’t save to USB memory
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Is the USB memory protected?
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Does the USB memory have enough free capacity to save the data?
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When formatting the USB memory, format it in FAT32 or FAT16 format.
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Could the recorder be playing back?
Can’t transmit/receive MIDI data
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Is the MIDI PORT selected correctly? (
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Are the mode and channel selected correctly on the transmitting and receiving devices? (
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Has an event been assigned for the program change? (
When you recall a scene, some
channels/parameters are not updated
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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? (
Summary of Contents for LS9 Editor
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