Kapitel: SERVICE
CEUS Version 2.0
53
Notes sometimes fail to repeat, drumming/sputtering noises occur when keystrokes are re-
produced, spurious noises occur such as clicking, clattering, etc., or pedals squeak:
The piano action (possible the CEUS action) is highly unregulated.
If no improvement is achieved by calibrating, service by a piano technician is urgently need-
ed.
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Extremely bad
A newly recorded piece is reproduced in a poor or hardly recognizable manner.
Keys move rather at random. Keystroke dynamics are wrong. Old recordings are okay.
Certain hammer sensors return no or wrong data because:
Disruptions (strong light shines on the hammers) may have occurred during recording
or playback.
The flat connection cable is disconnected (may be splayed or otherwise defective).
Individual sensors are defective or bent.
Hooks are missing from hammer shanks.
Do not calibrate!
Perform a visual inspection.
Playback of virtually generated files (MIDI) becomes quieter at extreme volumes
The power supply capacity is exhausted as of approximately 40 keys played simultaneously at
full volume. If needed, order the optional additional CEUS power supply.
During playback, some keys work, while others do not
Thermal switches have been activated. Test individual keys by transposing a recording. Af-
fected keys will be reset upon cool-down.
False key numbers have been assigned. Perform rough and fine calibration. If necessary, as-
sign key numbers manually.
A key does not play during playback
During playback of a key that is repeated continuously, 2–3 times per second, at a medium
dynamic for over 10 minutes, the thermal switches of the particular key may be triggered.
The affected key will be reset upon cool-down.
Key number assignment does not work
Assign key numbers manually.
Keystrokes for existing recordings are extremely loud
For new recordings, only hammer strikes may have been recorded (key movements are not
accurate).
The connector between the action and the keys may be disconnected. Key prints are not
connected.
None of the pedals work
Pedal cable is detached. Pedal print is defective.
Individual pedals:
Cable is detached or is not properly in the pulley.
The cable connection or pedal print is defective.
No playback
48 V power supply does not supply any voltage. (Are the hammer sensors defective?)
During playback of a piece, the display reads “0 < no playback”.
