Panasonic RX-DT30, Service Manual

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R X - D T 3 0
n
Digital Servo System
DIGITAL SERVO SYSTEM
This servo system has no adjustment
MN66271 RA (Super 1 chip
(Digital servo processor)
- - - - -
Digital audio
playback
B
Focus error
output signal
F
OCUS
coil Lens
Tracking coil
microprogram
processing
Traverse coil
Microcomputer
The following flow chart shows the sequence of automatic adjustments.
Flow chart on automatic adjustment sequence
Focus offset adjustment
Tracking offset adjustment
Temporary adjustment of focus gain
Approx. 2 sec.
Spindle motor starts rotation
l
Because the microcomputer precisely performs the
automaticadjustmentsasshownin theflowchart,
take approx. 5 seconds to finish reading TOC data if a
used disc is
or the surface is warped.
Temporary adjustment of tracking gain
Tracking balance adjustment
No
Fine adjustment of focus gain
Fine adjustment of tracking gain