Troubleshooting
Diagnostics
7-7
Player Control Diagnostic
The Player Control diagnostic is most likely to be of interest to the user. It displays the
response of every user control to being played, moved, pressed, whateverÑexactly as
the internal computer sees it. If a control does not respond correctly for the diagnostic,
then it will not respond appropriately during normal playing. Since the diagnostic
displays the raw data in real time, itÕs easier to Þgure out what might be going wrong.
To start the Player Control diagnostic from the Main Diagnostic Menu, press
Row
Select
until
p
p
p
pl
l
l
lc
c
c
c
shows then press
Col Select
. The display will blink a couple of
times then go blank. You can then test any key, any control, or any button by simply
playing, moving, or pressing it and observing the display.
Testing the Keyboard
Each key has two switches under it. The Þrst switch closes when the key is pressed
slightly then the second switch closes when the key is nearly all the way down. The
display will indicate a partially pressed key (only the Þrst switch closed) by showing
its note name dimly. When the key is fully pressed, the note name will brighten. If the
Þrst switch is defective, the display will blink when the key is fully pressed. Every key
should have the switch points in about the same place. Large differences lead to loud
or soft keys and are usually caused by dirt in the switch contacts.
Testing the Ribbons
There are actually 4 sections to the ribbons. When a ribbon section is touched, the left
digit of the display indicates which section (lower-left, upper-left, lower-right, upper-
right) by illuminating the corresponding segment. The right two digits indicate your
ÞngerÕs position relative to the center line, using a 2-digit value from 0% to 99%.
A properly functioning ribbon section will activate everywhere with a light touch and
immediately deactivate when your Þnger is lifted. The numeric display should react
smoothly and linearly to Þnger movement and stop changing when Þnger movement
stops. The range should be from 3 or less to 97 or more. Pressing the center ridge
should activate the section above and below together and give a reading of 3 or less.
Testing the Switch Pedals
If already plugged in, Þrst unplug the pedal. Now plug it in and check the display. It
should read
s
s
s
sp
p
p
pi
i
i
i
(Switch Pedal In). Now operate the pedal. The included pedal
should say
r
r
r
rp
p
p
pc
c
c
c
when stepped on and
r
r
r
rp
p
p
po
o
o
o
when released. A dual pedal should
react the same when the right pedal is operated and
l
l
l
lp
p
p
pc
c
c
c
,
l
l
l
lp
p
p
po
o
o
o
when the left
pedal is operated. Aftermarket pedals may show
l
l
l
lp
p
p
po
o
o
o
or
r
r
r
rp
p
p
po
o
o
o
when stepped on
and
l
l
l
lp
p
p
pc
c
c
c
or
r
r
r
rp
p
p
pc
c
c
c
when released instead. This is OK because the Stage Piano
operating system adapts to these when the power is turned on if they are plugged in.
Testing the Control Pedal
If already plugged in, Þrst unplug the pedal. Now plug it in and check the display. I
should read
c
c
c
cp
p
p
pi
i
i
i
(Control Pedal In). Now operate the pedal slowly over its range.
When fully up (rocked back, toward you), the display should read 0 or 1. When
midway down (forward), the reading should be around 130 (100Ð160 is OK if youÕre
just estimating the halfway point). When fully down, you should be able to reach 254
or 255. If any of these checks fail, refer to
suggestions.
