Technics SX-KN6500 Service Manual page 23

Pcm keyboard
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- First, set the COMPUTER terminal switch to MIDI.
- Use a MIDI cable to directly connect the MIDI IN and MIDI OUT
terminals.
- When a keyboard key is pressed, the transmitted and received data
are compared and the MIDI terminal operation is indicated as being
OK or NG. (refer to
- If NG is shown, check both the IN and OUT terminals, as well as the
circuit.
12.9. WAVE ROM test
- Press the EXECUTE button to start the test.
- The test result (OK or NG) is displayed within thirty seconds. If the
test result is NG, not only the respective IC, but a break or short
circuit in the ADDRESS/DATA BUS as well as in any of the strobe
signal lines may be the causeof the failure. (refer to
12.10. SOUND SYSTEM test
- Use the button in the SOUND GROUP to select an item from 1 to 6
(refer to
Fig.31
Fig.29
)
and
Fig.32
). Press a keyboard key.
Fig.30
Fig.31
Fig.32
23
Fig.30
)

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