Technics SX-KN6500 Service Manual page 22

All the dots light red, green, blue, white, and finally black. The
display can be held by pressing the DISPLAY HOLD button.
CROSSTALK:
An H pattern is shown. LCD crosstalk can be evaluated. To exit
this test, press the EXIT button.
SAMPLE:
Several display patterns shown during normal use are shown. The
display can be held by pressing the DISPLAY HOLD button.
CONTRAST:
The test pattern is shown. Adjust the contrast by the CONTRAST
control on the left of the LCD. To exit this test, press the EXIT
button.
- If the correct display is not shown during these tests, the LCD or
LCD drive circuit may be defective.
12.7. In & Out interface test
- 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
- When a keyboard key is pressed, the corresponding pitch and
velocity aftertouch is displayed (only as long as the key is
depressed).
- 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.)
- If the display fails to change when the part is operated, or if the
change is abnormal, it may indicate a defective part.
12.8. MIDI IN/OUT test
Fig.28
Fig.28 )
Fig.29
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