26 PianoDisc Installation Guide
228CFX - PianoCD - iQ
Step 16: Modifications for proper Trap-work
fit
A. Determine the distance
needed for the trapwork.
Simply subtract the actual
measurement from 3/4" (19
mm) to determine how much
additional room will be needed.
If the distance is less than 1/2"
(13 mm), use 1/2" (13 mm).
B. Remove the lyre again, then
outline and remove the keybed
lyre support. The keybed lyre
support is a wood or metal strip
that is attached to the bottom
of the keybed.
C. Reposition the keybed lyre
support. Use the
measurement arrived at in step
14A above.
• Mark the new position of the
mounting screws with a pencil,
and then drill the pilot holes for
the lyre support.
• When drilling these holes be
sure not to drill all the way
through the keybed. Now, re-attach the keybed lyre support in its new position.
D. Check the una corda lever position. Because we have relocated the lyre
support (and therefore the pedal lyre) it will be necessary to modify the
position of the una corda (soft) pedal to accommodate this change.
• Reattach the una corda lever to its original position on the keybed. Usually the
una corda must be moved the same amount as the lyre.
• Reposition the una corda lever as needed, drilling new holes in the keybed to
mount it.
• Also check the contact area of the keyframe. Sometimes wood needs to be
added for proper contact of the lever.
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