Daewoo DDT-21H9ZDF(21"), Service Manual

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CIRCUIT OPERATIONAL DESCRIPTION
2) Motor Drive IC: BA5810FP(IA02)
BA5810FP(IA02) is 5 channel motor operating IC which has 4-channel BTL driver and 1 channel reversible
driver and 2 out of 4 channels are used as Stepping Motor driver. Driver IC generates the focus signal and
the tracking signal for pick-up actuator, the sled signal for feed, spindle signal and the load signal for
opening and closing of the tray. The focus signal, the tracking signal, the sled signal and the spindle signal
are input into each relavant port of the drive IC(in the order of No. 25 pin, 22, 5, and 6) and set the gain
amplification and the center voltage through the internal OP-AMP and drive on both sides and then the
focus signal and the tracking signal will be output as FO+, FO- and TR+, TR- on actuator, the sled signal
and the spinle signal will be output as SLED+, SLED- and , SPINDLE- on each motor. For the
load signal the input opening/closing signal is output as LOAD+, LOAD- through the loading PRE FWD
REV circuit.
Motor Drive IC(BA5810FP)Block Diagram