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Technics SJ-HD505 Service Manual page 34

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Clock
- The controls of the playback signal, recording signals, and of the 4-
channel driver IC (IC1: AN8772) all function using the clock on the
MD LSI as the master clock.
*1 Kerr effect
A phenomenon in which the polarization plane of laser light
reflected from a material shifts in one of two directions depending
upon its "plus" or "minus" magnetic polarization.
*2 ACIRC ........ Add on interleave CIRC
The aim of Add-on interleave is to improve the resistivity in CD-
ROM decoder from the burst error on the disc.
*3 ATRAC ........ Adaptive Transform Acoustic Cording
The digital data compressing system developed for MiniDisc in
which audio signals can be reproduced with only about 1/5th in the
data normally required for high fidelity reproduction.
*4 Curie temperature
The temperature at which magnetism of a specific material
dissipates. This temperature varies according to the material.
*5 UTOC........User Table Of Contents
Found only on recordable MiniDiscs, this area contains subdata
(track number, etc.) which can be rewritten by the user.
9. Measurements and Adjsutments
Cautions:
- It is very dangerous to look at or touch the laser beam. (Laser
radiation is invisible.) With the unit turned "ON" , laser radiation
is emitted from the pickup lens.
This unit SJ-HD505 is designed to operate on power supplied from
the Amplifier SE-HD505MD through the Tuner ST-HD505MD.When
connecting the unit to other system components, do not connect to
the Amplifier SE-HD505MD directly. Be sure to connect this unit
through the Tuner ST-HD505MD.When operating the unit SL-HD505
alone for testing and servicing, without having power supplied
from the Amplifier SE-HD505MD, use the following method.
9.1. Power Supply to This Unit alone
1. Setting of the unit switches: Set MARKING to "AUTO", and

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