44 CARRIAGE SERVO SYSTEM
The carriage servo system inputs the TRKG actuator's drive
voltage, and through the carriage servo EQ shown in Fig.
4-20, the amount required for the carriage movement is ob-
tained. _
Also,
the carriage's LOCATE operation obtains LOCATE
voltage by switching over the internal current source in the
serial data. This voltage is about 6V. However, during
startup and lock, since the output current is limited to
200mA, the voltage will become lower than 6V.
Fig.
4-20
Fig.
4-21
23
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