Section Two Unit Circuit Principle
3.2.1 Servo circuit
1. DV727SI adopts SANYO 62 decoder and MTK decode solution (FLASH(16M)+SDRAM
(64M)). The servo circuit is mainly composed of front signal processing, digital servo processing, signal
processing IC T1389 and drive circuit D5954, in which MT1389 is the main component of decode circuit
at the same time.
Figure 3.2.2.1 Servo circuit diagram
Loader
DVD laser power control
VCD laser power control
Disc identification circuit
Disc in/out electric
machine and
detecting switch
Disc in/out circuit
Feed electric
machine on loader
Main axis
braking circuit
Main axis electric
machine on loader
Integration circuit
Integration circuit
Integration circuit
Integration circuit
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