Yamaha Disklavier DKC55RCD XG Mark III, Maintenance Handbook

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27
2. Keyboard adjustment — Check tone at softest touch, adjustment of playback data
minimum value
* MAINTENANCE *
*** MODE GP **
***** TEST *****
***** PLAY *****
*** KEYBOARD ***
** ADJUSTMENT **
KEY=XX OFFSET=XX
ppp=XX ->VEL=XXX
END!
* MAINTENANCE *
*** MODE GP ***
+ Power
00
R
01
R
02
02
02
00
In general, adjustment is not required if the condition of the piano action regulation is good and the piano table is in adequate condi-
tion.
Teat operation
Repetition of 1-88 key minimum pressure single note scale
Check item
1. Minimum pressure tone check
a. Check evenness of tone
b. Check the display VEL = less than 040 - good
Adjustment item
2. Playback data minimum value adjustment (ppp=XX 03)
Adjustment operation
<1key correction>
→
When not sounded
↓
(Assign the key No. with
song button)
↓
(Increase the playback data
by using the dial)
↓
(Continue the test with
Play/Pause)
Function of operating buttons
(Play/Pause)........ Pause/restart of the test
(Song select) ....... Key No. assignment
............................ Playback data minimum value
adjustment for each key
................................. Global playback data mini-
mum value adjustment for all
keys
Data display
≥
1.-a. Chesk tone
+/YES
–/NO
+/YES
–/NO
KEY
=
XX OFFSET
=
XX
PPP = XX ->VEL = XXX
Measured
velocity
Key No.
Temperature compen-
sation value
Playback data minimum value
Adjustment procedure
<Terms>
*
OFFSET (Automatic temperature compensation) - Manual correction is not
possible
Continuous usage of the DISKLAVIER MK III raises the temperature of the solenoids.
Since the playback function of the solenoids (in particular, playback of very soft notes)
degrades as the temperature increases, playback data is automatically compensated
(when it is decreased, the data reverts to its original values).
The initial value is 00, and compensation should be carried out with increments/decre-
ments of 1. Therefore, keyboard minimum pressure adjustment should be done with a
value of 00.
The value reverts to initial (00) after every testing of [5. Keyboard measurement]
*
Playback data minimum value - ppp=XX
Adjust the possible minimum pressure playback data (Velocity) to stabilize and make
the minimum pressure notes even.
Initial value of each key is the value which is measured by [5. Keyboard measure-
ment].
The minimum value (lowest) is 03, and adjustment is done in increments/decrements
of 1.
These data are re-written each time [5. Keyboard measurement] has been performed.
* Measured velocity - VEL=XXX (on full-function models only)
Velocity against playback data (velocity), measured by sensor.
In terms of piano characteristics, it is OK if velocity is less than 040 at minimum pres-
sure.