Troubleshooting - Kurzweil K2000 Service Manual

SECTION
4
TROUBLE.DOC
01/04/93
4
.
8
TROUBLESHOOTING
4.8.1
1
.
2
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3.
4.
5
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6
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7.
8
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9.
4.8.2
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
VI. 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.
7