1 Specification
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Musical keyboard with 49 keys
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multi sensor
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can be used with Toshiba HX- MU900 MSX music module
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same connector as NMS1160 Philips keyboard but not compatible
2 Parts
The parts of the keyboard are:
2.1 Key print
A printed circuit underneath the keys with:
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15 pen connector: 8 out lines, 7 in lines
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49 switches underneath the keys
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49 diodes
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a printed circuits that implements the matrix as shown in the circuit diagram
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49 diodes
2.2 Multi sensor print
A printed circuit underneath the multi sensor with wires from keyboard print to
connection print at multi sensor
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Connector for in lines (7)
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Connector for out lines (8)
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Two connectors for outside wiring
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Connector for multi sensor (flexible wires)
2.3 Wiring
Wiring connects all prints and the external connector
3 Circuit
diagram of key print
On the next page sthe circuit diagram is shown. Shown in landscape!
2
Summary of Contents for HX-MU 901
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