Kurzweil K2000 Service Manual page 54

SECTION 4
TROUBLE.DOC 01/04/93
4.8
4.8.1
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2.
3.
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5.
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9.
4.8.2
TROUBLESHOOTING
Everything possible has been done to ensure the K2000/K2000R is
delivered free of defects. There is a good chance there is
nothing wrong with the unit, even if you are not seeing the proper
display or hearing any sounds. If so, carefully check the
following items:
Make certain the power input receptacle is set to the correct
voltage, and is functioning properly.
Ensure the power cable is connected to a reliable power source.
Adjust the display contrast if necessary (with the Contrast
parameter in Master mode). If for some reason you have trouble
reading the display, even after adjusting the Contrast parameter,
you can also adjust the contrast by holding down the ENTER button
and turning the Alpha Wheel. IF this improves the contrast,
immediately return tho the Contrast parameter and adjust it
slightly. This will cause the K2000/K2000R to remember the
current display contrast level, and should take care of any
difficulties you may have been having. If this procedure doesn't
work, the service technician should contact the Kurzweil Service
Department.
Check that the Volume slider is at least partially up from it's
bottom position.
Reaffirm that the proper audio cables are fully connected to the
K2000/K2000R and to a sound system; also making certain the sound
system is properly connected to power and turned on. If sound is
still not heard, a good suggestion would be to test the audio
cables, replace them, or test for sound by connecting a high
quality pair of headphones to the headphone jack.
Check the volume of your sound system.
Lower the volume of the sound system, turn the K2000/K2000R off,
then on again. This is called a power cycle.
Press the +/-, 0, and CLR (on the numeric pad to the right of the
front panel) simultaneously. This is called a soft reset.
As a last resort, save to disk any RAM objects you've created, and
perform a hard reset as per paragraph 4.12.1 (page 11) for early
software versions or paragraph 4.19.1 (page 29) for software
versions V1.30 and above. The K2000/K21000R will warn you about
deleting everything (only RAM objects will be deleted). Press
"Yes". After a few seconds, the power-up display should appear.
For additional assistance, check the items in the following
troubleshooting guide.
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