Samick DCP-8 Manual page 45

Now you are back in Performance Mode, and the Data Control knob has been
assigned so that a MIDI Program Change will be sent out each time the control
is turned. The LED display will show the currently selected MIDI Program
Number (between 0 and 127).
Sending Bank LSB Changes
There are two ways to send Bank LSB changes. You can either enter a specific
LSB (Least Significant Byte) value using (Data Control knob assignment remains
unchanged), or you can assign the Data Control knob to send Bank LSB changes.
(Please note that after any kind of bank message, it is usually necessary to follow
up with a MIDI Program Change message in order to affect a sound change on the
receiving device.)
1.To Send a Specific Bank LSB Value (Data control knob assignment remains
unchanged):
Press the [Voice/Function] button to enter Function Mode.
Press the Bank LSB Key (Ab5).
Data Control
[Assignable]
Voice / -
Function
Ab5
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