Midi In/Out Test - Technics SX-KN7000P Service Manual

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The operation status of each input action part can be confirmed. If the part is
operating properly, "OK" is shown, excluding the Expression Pedal. (refer to
)
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When a keyboard key is pressed, the corresponding pitch and velocity aftertouch is
displayed (only as long as the key is depressed).
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The respective statuses for other input action parts are displayed. (Analog parts are
shown as numerical values from 0 to 255, and switches are shown as ON or OFF.)
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If the display fails to change when the part is operated, or if the change is abnormal,
it may indicate a defective part.

8.8. MIDI IN/OUT test

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First, set the COMPUTER terminal switch to MIDI.
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Use a MIDI cable to directly connect the MIDI IN and MIDI OUT terminals.
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When a keyboard key is pressed, the transmitted and received data are compared
Fig.29
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Fig.28