Sony DVP-M35 Operation Manual page 33

The FE signal input to IC506 (DSP CXD8730R) is low frequency boosted and gain-adjusted at
the internal digital filter, and then output from the DSP as the focus drive signal (F OUT _)P)
by the D/A converter inside the DSP.
The FOUT signal is input to the focus actuator (coil) drive IC (IC363:BA5981).
In IC363, voltage amplification, voltage conversion, and
current amplification are carried out to drive the focus actuator (coil) using the output signals
of IC363 (DVD FCS+, DVD FCS-).
(2) DVD tracking servo
TK-47board MB-78 board
ICG06 IC011 i Ic452 IC503(2/4) IC506 IC363
CNO01 8S133P3720 MC14053 I MC14053 NJM3403 CXD8730 BA5981
DPD TOUT D_I d
' . ...... F_'*pLc_..__ .. _ I ct;iovo
', OFFwf'mnI_ RFP ', _ (OVO: H_
!(.c__ooL._ !_ .._,y.vp.-.pl I _ co:_/
To tr_kino actuator
Figure. 3-6 DVD Tracking servo, drive
The tracking error signal output from optical pickup is entered to the IC006:SSI33P3720
A2 to D2 (O to (_)P) on the TK-47 board. The tracking error signal is detected in the
DPD (Differential Phase Detection) method.
The amplification degree and offset value of tracking error signal are set by internal
register in the IC006.
The tracking error signal TE (IC006, _P) is output from IC006, then it is entered to the
switch IC (IC011: MC 14053).
The switch IC shuts off tracking error signal when DVD RF signal (RFP) is below
about 200mVp-p (AC component).
Tracking Error (TE) signal (DPD signal: Differential Phase Detection signal) generated
in the IC006 is entered to the MB-78 board through a flexible fiat cable.
TE (Tracking Error) signal passes through the switch IC, IC452 (MC14053 that switches
CD tracking error andDVD tracking error (DPD) signal), and it"is amplified at IC503
(NJM3403), then entered to the TE (_)P) of IC506 (DSP: CXD8730R).
!
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