• Check individual unit temperatures.
2. One or more keys does not playback.
• When a poly switch, used to detect excessive current, engages, the corresponding
key(s) stops operating.
3. Playback volume differs between keys.
• The playback table is incompatible Re-measure.
* Uneven key balance in the balance section, which is related to key regulation
and key rail adjustment, affects the measurement.
C) Recording Problems
1. Cannot record.
• Check communication between the units.
2. Some notes do not record.
• Carry out a sensor test with the Maintenance Mode.
• Check 12 light source groups Light source system.
• Check 8 light receiver groups Light receiver system.
• Check key shutters.
• Check sensor heads.
3. The volume differs between recording and playback.
• Strongest notes Slight decrease in volume.
• Weakest notes Slight increase in volume.
4. Timing differs when producing sound.
• Timing may vary in the weakest keystroke range.
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