Pioneer PL-990 매뉴얼 - 페이지 4
{카테고리_이름} Pioneer PL-990에 대한 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Pioneer PL-990 24 페이지. Stereo turntable
Pioneer PL-990에 대해서도 마찬가지입니다: 사양 (1 페이지), 서비스 매뉴얼 (13 페이지), 사용 설명서 (26 페이지), 사용 설명서 (26 페이지)
BACKGROUND
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It appears that this Turntable model was designed with the capability of
having a PreAmp On/Off switch.
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This option seems to have only been enabled rarely, if ever.
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There is a hole molded in the plastic below the platter which allows access to the PreAmp PCB
where a switch would have been/could have been installed
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The PCB includes a location for a switch and nearly all of the electrical traces necessary for such a
switch
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Note that the PreAmplifier PCB in my turntable unit is significantly different
from the one described in a service manual available online.
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But the provision for a switch is available on both versions.
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My Turntable's PreAmp is based on a TI-DRV602 chip.