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Troubleshooting
If the EF-303 does not operate correctly, please check the
following points first.
H this does not resolve the problem, contact a Roland Service
Center or your dealer.
Power does not come on, or
power comes on but unit
does not operate
Are you using the supplied AC adapter?
> The EF-303 will not operate correctly with an AC adapter
other than the supplied one, since the specifications will be
different.
If you are using the supplied AC adapter but the EF-303 still
does not operate, check whether the correct voltage is being
supplied.
Multiple devices that use large amounts of power should not
be connected to the same outlet using "splitter" plugs or
cords.
No sound/Insufficient volume
15 the power of the EF-303 or connected device
turned on?
Э Check the settings of the device (p. 14).
= Check the connections of the device (p. 12).
16 the volume of the connected amp/mixer
raised?
Э Check the settings of the connected device.
A cable may be broken.
= Try exchanging the connection cable.
Could you be using a connection cable
containing a built-in resistor?
-3 Use a connection cable without a resistor (such as one in
the Roland PCS series).
Is the [SOURCE SELECT] switch selected
correctly?
> Check the setting (p. 15).
The [INPUT LEVEL] knob may have been
turned down all the way.
2 Adjust it to an appropriate volume (p. 15).
The [OUTPUT LEVEL] knob may have been
turned down all the way.
Adjust it to an appropriate volume (p. 15).
No sound only when the effect is OFF
2 If the [SYSTEM] setting "DIRECT MUTE" is turned "ON,"
turning the [GRAB(EFFECT)] switch OFF will mean that no
direct sound is output either. Check the setting (p. 53).
No sound only when effect is ON
2 Depending on the effect settings, there may be no sound
(or very low volume. Check the effect settings, and try
setting the [EFFECT BALANCE] knob to DIRECT (p. 37).
No sound from the headphones
The [PHONES] knob may be turned all the
way down.
> Adjust it to an appropriate volume (p. 15).
The [EFFECT CUE] button may be lit.
> Press the [EFFECT CUE] button. Depending on the effect
settings, this may cause no sound to be output. Check the
effect settings, and try setting the [EFFECT BALANCE] knob
to DIRECT (p. 15).
Effect not applied when
using internal effect (synth
sound is not heard)
The [GRAB (ЕЕЕЕСТ)| switch may be OFF.
> Check the setting (p. 15).
The [EFFECT BALANCE] knob may be at DIRECT.
-> Check the setting (p. 37).
A synth-type algorithm may be selected.
2 There will be no sound until you start the step modulator,
or supply note-on data—either by means of the keyboard
mode or by using an external MIDI device (p. 29).
67
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