Servo Operation At Dvd Play; 3-2-L. Optical Pickup Control - Sony DVP-M35 Operation Manual

3-2.

Servo Operation at DVD Play

3-2-l. Optical Pickup Control

DVD
(1) focus servo
The focus error signal output from the optical pickup for DVD (hereinafter referred to
as optical pickup) is entered to the TK-47 board ICOO6: SSI33P372OA A to D (@ to
The balance amount and offset amount of the focus error signal is set by IC805 (CPU)
via IC804 of the MB-78 board using the internal register of ICO06.
The focus error signal is generated at TK-47 board ICO06, amplified, and output from
the FE terminal (@p).
The ICOO FOCUS error (DVD FE) signal is input to the MB-78 board via the flexible
flat cable.
The error signal is switched according to whether the disc type is DVD or CD by the
switch IC452, its signal level is adjusted by IC503 (OP amplifier @, @, @p), and it is
input to the servo DSP IC506 (CXD8730R) @p.