Boss Audio Systems RC-300 User Manual

Troubleshooting

Are the connection cables shorted?

Try substituting with other connection cables.

Is the RC-300 properly connected to other

devices?

Confirm the connections to other devices (p. 6).

Is the power to the connected amp or mixer not

turned on, or is the volume turned down?

Confirm the settings for connected devices.

Could the [TRACK] sliders or the [MASTER

LEVEL] knob be lowered?

Adjust sliders/knobs to the suitable positions.

Could the phrase memory level (p. 20) be

lowered?

Adjust the phrase memory level. Confirm that the phrase memory is not such that the

phrase memory level is adjusted by an EXP pedal or other such controller (p. 23).

Are input, tracks, and the rhythm output all set

correctly?

Confirm the output settings.
“Using the Same Output Jacks for All Phrase Memories (Input/Track 1, 2, 3/Rhythm Output)” (p. 33)

“Setting the Output Jacks for the Rhythm Sound (Rhythm Output Select)” (p. 26)

Has anything been recorded to the tracks?

Check the track’s STATUS indicator to see whether the track has been recorded. If the STATUS

indicator is unlit, nothing has been recorded.

To prevent noise, a fade-in and a fade-out are applied at the beginning and end of a recording. In some cases, it may sound as if some of the

sound has been left out.

Are the INPUT LEVEL [AUX], [INS], and [MIC]

knobs turned down?

Adjust knobs to the suitable positions (p. 6).

Is “Input Output Select” set correctly?

Confirm the output setting.
“Using the Same Output Jacks for All Phrase Memories (Input/Track 1, 2, 3/Rhythm Output)”

(p. 33)

Could you be using a connection cable that

contains a resistor?

Use a connection cable that does not contain a resistor.

Phrase Memories not switching Is something other than the Play screen

appearing in the display?

With the RC-300, you cannot switch phrase memories while any screen other than the Play

screen is displayed. Press the [EXIT] button to return to the Play screen.

Is there insufficient memory remaining?

If memory is insufficient, initialize any unneeded phrase memories (p. 15) before recording or

overdubbing.

Is Loop Sync set to ON in the track?

When recording with Loop Sync set to ON, once the end of the longest track is reached, the

RC-300 automatically switches to overdubbing. “Aligning the Beginning of Loop Playback

If large amounts of noise are being introduced by distortion effects or other effects processors connected to the input jacks, it may be that

recording is being triggered by that noise. Either raise the auto record trigger level (p. 33), or reduce the noise, for example by lowering the

distortion level.

Is the track set to ONE SHOT (p. 17)?

You cannot record/overdub to tracks set to ONE SHOT. If you want to record/overdub,

change the Play Mode setting to LOOP.

Is recording or overdubbing in progress?

You cannot change the phrase memory tempo during recording or overdubbing. Change

the tempo while the performance is stopped or being played back.

Is Tempo Sync set to ON in the track?

When Tempo Sync is not set to ON in a track, the playback speed does not change even if

the phrase memory tempo is changed. To match the playback speed to the phrase memory

tempo, set the track’s Tempo Sync setting to ON (p. 18).

Could there be a short in the MIDI cable?

Try replacing the MIDI cable.

Is the external MIDI device properly connected? Check the connections to the external MIDI device.

Are the MIDI channels matched to those of the

external MIDI device?

Confirm that both devices are set to the same MIDI channels (p. 34).

If transmitting from the RC-300, have you made

the necessary settings for transmission?

Check the Program Change Message Transmit ON/OFF (p. 34) and Control Change Message

Transmit settings (p. 23).

Is the RC-300 set as the master unit?

The RC-300 will not receive MIDI clock or MIDI start/stop data from an external device.

(The RC-300 cannot synchronize as the slave.)

If you want to synchronize the RC-300 with an external device, the RC-300 must be assigned

as the master.

Are the assignment source “SYNC START/STOP”

(p. 23) and assignment target set correctly?

If you want to use start/stop for synchronization, you must specify “ALL PLAY/STOP” or “TR1–3

PLAY/STOP” as the assignment target for the assignment source “SYNC START/STOP” on the slave

unit.

Could you have changed the phrase memory

tempo of the master unit during synchronized

performance?

Do not change the phrase memory tempo of the master unit during synchronized performance.

Is the USB cable properly connected?

Check the connection (p. 36).

(If exchanging files with your computer via USB)

Is the USB Mode set to “STORAGE”?

Set the USB Mode to “STORAGE” as described in “Using USB to Exchange Files with Your

Are the file name and format of the WAV file correct? Confirm the file name and format of the WAV file (p. 36).