Troubleshooting
7-8
Engine Diagnostics
On the Main Diagnostic Menu, press the right soft button to enter the “Sound Engine”
diagnostic selection menu. The display will change to:
The left soft button (STEP) allows you to run one diagnostic at a time. The center soft button
(AUTO) will start an automatic sequence of diagnostics that will run repeatedly. Pressing
the up and down buttons together will cancel engine diagnostics and return to the Main
Diagnostic Menu.
When the STEP soft button is pressed, the display changes to:
and the left soft button will be flashing. Press it to begin the diagnostic named in the top
line. Or use the - button to move down and + button to move up the list of available
diagnostics. Pressing the up and down buttons together will cancel engine diagnostics and
return to the Main Diagnostic Menu. Below is a description of each of the available
diagnostics.
1. TEST ROM - This performs a checksum test of the engine software.
2. TEST SROM - This performs a checksum test of the Sound ROM. While
running, a progress bar is displayed. The test takes about 1 minute.
3. TEST SRAM - This tests the read/write memory of the sound engine CPU.
4. TEST DRAM - This tests the delay memory used by the effects processor.
5. TEST MABEL - This tests the main sound generator chip.
6. TEST MIDI PORT - Before running this diagnostic, a MIDI cable MUST be
connected between the MIDI In and MIDI Out jacks of the KME61. Do not
connect to any other MIDI device when running this diagnostic.
7. SEND SINEWAVE - This diagnostic will generate a 1000Hz sinewave audio
signal beginning at a moderately loud volume. Please disconnect or turn down
your audio system before pressing the Start soft button! While running, the
data slider can be moved to change digital level of the sinewave signal from -
127dB (very faint) to 0dB (very, very loud!). The sinewave is used with external
test equipment to measure distortion, signal-to-noise ratio, and other audio
parameters. Press the “-“ button to stop the sinewave.
While an Engine Diagnostic is running, the display will change to (using the MIDI test as an
example):
After a few seconds, the bottom line will change to show the results:
TEST MIDI PORT
CHECK MIDI PORT
TEST ROM
START
DIAG ENGINE
STEP AUTO
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