7-10
Troubleshooting
Diagnostics
Delay RAM Test (
dd
dd
rr
rr
mm
mm
)
This tests the memory used for the effects.
Sine Wave Test (
ss
ss
ii
ii
nn
nn
)
This test produces a 1KHz sine wave until either select button is pressed. The Volume/
Controller slider will very the volume from full scale (3.15Vrms) down to -127dB
below that (1.4uV) in steps of 1dB. Viewed on an oscilloscope, there should be no
clipping of the full scale signal.
CAUTION: Turn your audio system down before running this test! The level produced is
much higher than the Stage PianoÕs normal level.
Burnin Test (
bb
bb
uu
uu
rr
rr
)
This runs the above diagnostics (except Sine Wave) in a continuous loop for reliability
veriÞcation. After each run, the pass count will be displayed brießy. If more than 255
times, the count will remain at 255.
Jumper Settings Display
This diagnostic displays the settings of the 4 hardware jumpers. These jumpers
identify the keyboard length and type plus other conÞguration information to the
software. After noting the display, press Row Select to return to the main diagnostic
menu.
Exiting Diagnostics
The simplest way to exit diagnostics and resume normal operation is to turn the
power off then on again. Alternatively, you can return to the main diagnostic menu
from a diagnostic group as follows:
¥ From the Player Control diagnostic, press the two Panic buttons
¥ From the CPU group, select the bb
bb
aa
aa
cc
cc
test and run it
¥ From the Sound group select the bb
bb
aa
aa
cc
cc
test and run it
¥ From either Burnin test, press any button then select bb
bb
aa
aa
cc
cc
Once back to the main diagnostic menu, select and execute ee
ee
xx
xx
ii
ii
(exi). Normal
operation should then start in Internal Voices mode with Grand Piano 1 selected.
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