Boss Audio Systems GT-6B User Manual

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Is the MIDI cable broken?

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Try using a different MIDI cable.

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Is the GT-6B correctly connected to the external MIDI 
device?

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Check connections with the other MIDI device.

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Do the MIDI channel settings of both devices match?

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Make sure that the MIDI channels on both devices match 
(p. 65).

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If sending messages from the GT-6B, have you set the 
settings necessary for sending data?

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Check the on/off status (p. 66) for transmission of 
Program Change messages and the settings for the 
controller numbers to be transmitted (p. 66).

If an incorrect operation is attempted or execution is not 
possible, an error message will appear in the display. When 
this occurs, continue by following the instructions indicated 
in the error message.

fig.11-301

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The memory backup battery inside the GT-6B has run 
down. (This message appears when the power is turned 
on.)

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Replace the battery as soon as possible. For battery 
replacement, please contact the nearest Roland Service 
Center or your dealer.

fig.11-302

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There is a problem with the MIDI cable connections.

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Check that MIDI cables have not been disconnected or 
broken.

fig.11-303

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You’ve attempted to switch patches by rotating the 
PATCH/VALUE dial, but the Dial function (p. 62) is set 
to “VALUE Only.”

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If you want to be able to switch patches using the 
PATCH/VALUE dial, set the Dial function to “PATCH 
No. & VALUE.”

fig.11-304

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More MIDI messages were received in a short time than 
could be processed correctly.