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I'm posting this tread for FR-4x owners and it concerns possible damage to the USB data jack on the bottom
of the grill. When using the port with a straight jack and performing while sitting has caused the port to become
damaged. Not a problem with other models but is showing up on 4x's.
The female USB port as with all Roland models is part of the output & power supply board. Any damage to any
of the inputs will require a board replacement. Damage to the female output can be avoided by the the use
of 90 degree plugs and securing the cables under the bellows strap.
A USB adaptor can be seen here --
of the grill. When using the port with a straight jack and performing while sitting has caused the port to become
damaged. Not a problem with other models but is showing up on 4x's.
The female USB port as with all Roland models is part of the output & power supply board. Any damage to any
of the inputs will require a board replacement. Damage to the female output can be avoided by the the use
of 90 degree plugs and securing the cables under the bellows strap.
A USB adaptor can be seen here --
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