Troubleshooting 49
01V96i—Owner’s Manual
Troubleshooting
Troubleshooting
Power won’t turn on, panel LEDs or
LCD won’t light
❍ Are the LCD contrast and panel brightness set appropriately?
❍ Is the POWER switch turned on?
❍ If the power still does not turn on, contact a Yamaha service center listed at the
end of the manual.
Sound is not input
❍ Is the optional I/O card inserted correctly? (see page 18)
❍ Is the signal from the external device being input?
❍ Is the input port patched to an input channel? (see page 29)
❍ Is the GAIN set to an appropriate level? (see page 32)
❍ Is the EQ attenuator raised? (see page 35)
❍ Is an insert turned on even though it is not assigned correctly?
❍ Is the input channel’s [ON] key indicator lit?
❍ Is the input channel’s fader raised?
Sound is not output
❍ Is the optional I/O card inserted correctly? (see page 18)
❍ Is the STEREO channel’s [ON] key indicator lit?
❍ Is the output channel patched to an output port? (see page 31)
Sound is not output from
headphones or MONITOR OUT jacks
❍ Is the [PHONES] knob or [LEVEL] knob set to an appropriate volume?
Insufficient volume
❍ Is the GAIN set to an appropriate level? (see page 32)
❍ Is the input channel’s fader raised?
❍ Could the EQ gain be lowered excessively? (see page 35)
❍ Could the GATE/COMP threshold or ratio be set to an excessive value? (see
page 37)
❍ Is the EQ attenuator raised? (see page 35)
❍ Is the output channel’s fader raised?
❍ Check the levels in each screen of the METER function. (see page 23)
Sound is distorted
❍ Is the wordclock set correctly? (see page 27)
❍ Is the GAIN set to an appropriate level? (see page 32)
❍ Could the input channel’s fader be raised excessively?
❍ Could the STEREO channel’s fader be raised excessively?
❍ Could the EQ or COMP gain be raised excessively?
(see pages 35–37)
Sound is output even though not
patched to an output channel
❍ Could the input channel be set to direct out? (see page 33)
❍ Could insert out be assigned to the output channel?
Operating a fader does not change
the level as expected
❍ Are the correct channels selected in the LAYER section?
Only a specific channel is heard from
the MONITOR OUT or PHONES jack
❍ Could the [CUE] key be on?
Noise is present in an externally
connected recorder or device
❍ Is the wordclock set correctly? (see page 27)
❍ Could an unsynchronized signal be input?
❍ Is the oscillator turned on? (see page 45)
High-frequency range is lacking
❍ Could emphasis be applied? This will occur if the state of the input signal does
not match the emphasis data.
❍ Could EQ be applied? (see page 35)
An input signal is being input, but
there’s no monitor output
❍ Could DIMMER be applied?
❍ Is the routing appropriate for the signal you want to monitor?
Headroom is restricted, particularly
when EQ boost is applied
❍ Use the EQ’s attenuator to reduce the level. (see page 35)
Signal is delayed ❍ Check whether the delay of each channel is set correctly.
Can’t save scene memories or library
data
❍ Could you be attempting to save a read-only scene/library memory, or a pro-
tected scene? (see page 42)
Can’t transmit/receive MIDI data
❍ Is the MIDI PORT selected correctly?
❍ Are the MODE and channel selected correctly on the transmitting and receiving
devices?
❍ Have you assigned an event to the program change?
When a scene is recalled, some
channels/parameters do not update
❍ Could recall safe be specified for those channels/parameters?
When a scene is recalled, it takes time
for the faders to stop
❍ Could a fade time have been specified?
