Scan Diagnostic - Kurzweil KME61 - REV A User Manual

There are three diagnostic groups that may be used as follows:
1. SCAN – This single diagnostic displays the action of every control.
2. LCD – This diagnostic tests the memory of the display module.
3. ENGINE – These diagnostics test various parts of the internal sound board.
To proceed to a diagnostic group, press the associated soft button.

Scan Diagnostic

When the Scan Diagnostic is selected, the initial screen will be like this;
SCAN DIAG
PRESS ANY KEY
At this point, any key press, button press, or control movement will display what moved and
what its value is. Response to each of the controls is described below.
Keys
When a key is pressed very slowly halfway down, the display will first change to:
KEYBRD POS:25
1ST:1 2ND:0 PRS:0
"POS:25" means that key number 25 (Middle C, C4) was pressed. The key numbers range
from 1 (C2) to 61 (C6). "1ST" and "2ND" show the status of the key's two switches, 0=Off and
1=On. Since the key is halfway down, only the first switch is on. After pressing the
remaining distance, the second switch turns on and the display changes to:
KEYBRD POS:25
1ST:1 2ND:1 PRS:0
Now both key switches are on. After the key is down, pressing harder will activate the
aftertouch (pressure) sensor and the "PSR" value will increase:
KEYBRD POS:25
1ST:1 2ND:1 PRS:78
Firm pressure should be required to get the reading up to 126 or 127. If it is too difficult or
too easy to reach values near 127, a service center may need to adjust the pressure sensitivity.
Finally, when the key is released, the two key switches turn off in the opposite order they
turned on: 2ND first then 1ST and displayed as follows:
KEYBRD POS:25
1ST:0 2ND:0 PRS:0
Properly functioning keys will go through the sequence just described.
switches doesn't turn on or the 0/1 indication flickers, it means that the keyswitches need
cleaning by a service center.
Troubleshooting
If one of the
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