Troubleshooting - Boss CE-20 Owner's Manual

Troubleshooting

The power doesn't come on.
Is the guitar connected correctly to the
INPUT R (MONO) jack?
Check the connections again (p. 3–9).
* When running off batteries, the unit won't
switch on unless there's something plugged
into the INPUT jack. This helps conserve the
batteries.
Is the plug connected to the INPUT L jack?
When using battery power, connect the
plug to the INPUT R (MONO) jack.
Have the batteries run down?
Replace with fresh batteries (p. 2).
Is the specified AC adaptor (PSA-series
sold separately) connected correctly?
Check the connections again (p. 3–9).
There is no sound/volume
is too low.
Is the other equipment connected correctly?
Check the connections again (p. 3–9).
Is the volume turned down on the
connected guitar/bass amp, effects
processor, or other device?
Check the settings on the connected
equipment (p. 3–9).
Is the LEVEL switch on the rear panel set
correctly?
Set the LEVEL switch to match the
connected equipment (p. 3–9).
Is the direct sound ON/OFF set to OFF?
Only the effect sound is output when this is
set to OFF. When you want to output the
direct sound as well, set this to ON (p. 22).
Is the effect level set to minimum?
Operate the E.LEVEL knob to adjust the
effect level.
Sound is distorted.
Are the EFFECT TONE (LOW/HIGH),
BRILLIANCE, and AMBIENCE knobs
positioned correctly?
Sounds may become distorted with the
knobs at certain settings. Turn down one or
more of these knobs, or turn down the
E.LEVEL knob until the PEAK indicator
does not light up too frequently. If in spite
of these measures the sound is still
distorted, lower the output level of the
device connected to the INPUT jacks, or set
the LEVEL switch to AMPLIFIER SEND/
RETURN (+4 dBu).
Is the LEVEL switch set to GUITAR/BASS?
When connecting to guitar amps, bass amps,
or other such gear, or when connecting to
equipment that outputs sound at high
volumes, set the LEVEL switch to
AMPLIFIER SEND/RETURN (+4 dBu).
Pressing the MEMORY/MANUAL
pedal does not call up the
intended memory.
Is the proper Pedal mode set for your
current application?
The MANUAL/MEMORY pedal (or the
MANUAL/MEMORY pedal when pressed
simultaneously with EFFECT ON/OFF
pedal) functions differently according to the
Pedal mode settings. Use the most
appropriate setting for your particular
application (p. 11–12).
The volume level of the
instrument connected to INPUT
jack is too low.
Could you be using a connection cable
that contains a resistor?
Use a connection cable that does not
contain a resistor.
25