Pioneer DVJ-X1 - Professional DVD Turntable Panduan Pelatihan - Halaman 19

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Sequence of Starting Up the Drive
Disc installation
Carriage shifted to the focus position
Canceling offset for
FE, TE, AS, PFENV, LNSC, and JIT
Light emitted from the CD laser
Focus search, detection of disc presence,
tentative judgment of medium type by
measuring the distance between the focus
pseudo-S-curve waveform and the actual
S-curve waveform
Disc present
Spindle starts rotating at 2,000 rpm.
CD
Light emitted from the CD laser
Focus search
After the medium type is judged according
to the disc reflectivity, FE, TE, AS, and
RFENV amplification gains are switched.
Canceling offset for
FE, TE, AS, PFENV, LNSC, and JIT
Focus on
CD
Final judgment of CD/DVD by detecting
a sync signal
Coarse adjustment of focus position
Offset adjustment of the tracking actuator
Tracking balance adjustment
Adjustment of tracking-error amplitude
Off-track threshold adjustment
Measuring eccentricity
Tracking on
Accurate adjustment of focus position
Start of acquiring addresses
Note:
Install a disc after turning the unit on.
Detection by the Inside switch is
performed only for the first disc.
No disc present
Unloading
DVD
Light emitted from the DVD laser
DVD
Focus gain adjustment
Tracking gain adjustment
DVD
Tracking open
Tracking balance adjustment
Adjustment of tracking-error amplitude
Off-track threshold adjustment
Tracking close
Focus gain adjustment
Tracking gain adjustment
Lens-error gain adjustment
Learning focus-error attenuation
Reading lead-in data:
CD: If the total duration of data areas in
the TOC is less than 30 minutes
DVD: Depending on control data and disc
capacity
No
Detection of the 8-cm adaptor
DVD
After tracking open,
the spindle starts
rotating at 5,000 rpm.
Searching for 30000H
19
CD
Yes
CD
Searching for
0m01s time point
Spindle starts
rotating at 3,100 rpm.