KD-SH99
1-18
Flow until reading TOC of CD/CD-R/CD-RW
FEED RETURN
OFFSET SELF ADJUSTMENT
LASER ON
Pre SP KICK
LENS UP
FOCUS ON
THE SPINDLE START
TRAKING BALANCE
RF GAIN
FOCUS GAIN
TRACKING
TOC READING
1Tr. HEAD
Becomes DRVMUTE=H and the output of the IC604 driver becomes possible.
Picking up is moved to surroundings on the inside until becoming REST SW=L.
Afterward, moves in the direction of outer again and stops in the place in which
became REST SW=H.
FOCUS OFFSET, TRACKING OFFSET, and RF OFFSET are done, and
OFFSET of RF AMP in IC603 is corrected.
400ms turns the spindle motor before the focus search starts.
Lens UP of the pick is done. At this time, S character curve becomes about
2.0Vp-p by CTS-1000.
The down of the lens and FOCUS ONing are made.
Changes into CD-RW MODE, and serches for FOCUS in case of no FOCUS ON
even if FOCUS search(UP DOWN) is done three times.
The spindle motor is rotated up to the number of necessary rotations.
In the state of tracking OFF, do the self adjustment of wavy OFFSET of TE2 to 0.
It takes time to adjust the one with a large gap of the traking balance of picking up.
At this time, the racking error becomes about 2.8Vp-p by CTS-1000.
In the state of traking OFF, do the self adjustment of the RF level of RF(TP601)
to 1.0-1.2Vp-p. After adjusts,traking ON is done.
Do th eself adjustment of the gain intersection of the focus servo to 1.2kHz
(300ms).
Do the self adjustment of the gain intersection of the focus servo to 1.2kHz.
(300ms).
Time expands in DISC that the number of total tracks with CD-TEXT is a lot of.
It is a head of 1Tr., and the reproduction begins.
Shape of waves when based on Vref(TP602)
FEED
TP634
SP0
TP636
FE : Focus error signal
TE : T Tracking error signla
FEED : FEED deive signal
SPO : Spindle drive signal
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