EQUIPMENT REQUIRED:
1. Sine Wave Generator, capable of generating 8KHz. with
an
amplitude of 0.5
VPP.
f
2. Dual trace oscilloscope
3. Cable to connect sine wave generator to LINE
IN
jack
on
the
K250
4. Piezoelectric microphone
or
equivalent (only used
for
checking MIC input circuit)
5. 1/4" plug to bare wires (to observe the output of the K250
on
the scope)
6. Version 3
or
later software with same version sampling
software.
Set-Up:
The diagnostic EPROMs should be removed and the system
operating software should
be
reinstalled. Check to
be
sure that the
software has been installed correctly.
Connect the sine wave
generator to the
K250 LINE
IN
jack. Connect one trace of the scope
to
the output of
"the
sine wave generator and the other trace to the
left or right
HI
output
on
the K250. Set Group A and B sliders
to
center. Adjust the frequency of the sine wave generator to
aproximately 8KHz. and the amplitude
to
approximately· 0.5 VPP.
Procedure
LCD
READS PRESS COMMENTS
KURZWEIL
GRAND PIANO
PLAY MODE
INSTRUMENT
Display
on
power
up
RECORD SOUND?
DIG
1
Sound
type
(1-6):
QUICKTAKE 1
SELECT Active sampling
SELECT
Using
QUICKTAKE
achieves
the
fastest
turnaround time
Kurzwell
250
Service Manual. Chapter 4
4-57
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