必要な工具と部品
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この手順は未翻訳です。 翻訳を手伝う。
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Carefully pry open the case from the bottom edge.
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Boy, this is a lot easier to open than an iPod! (Spudger not required.)
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On the inside of the back cover, you'll find the product label. Notice the official company name, Tokyo Tsushin Kyogo Ltd. I've seen photos of later versions of the TR-63 which say "Sony Corporation" there instead.
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I'm not sure what happened to the corner of the label - perhaps after all these years in the back of my closet it was likely eaten by a grue?
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この手順は未翻訳です。 翻訳を手伝う。
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The earphone jack is composed of a few strips of metal. It also acts as a switch - when the earphone is inserted, contacts are opened to disconnect the built-in speaker.
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Carefully lift out the earphone jack assembly and set it aside from the case, still connected to the speaker.
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この手順は未翻訳です。 翻訳を手伝う。
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Here's the circuit board, earphone jack and speaker after they've been removed from the case.
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Notice that there are components mounted on both sides of the circuit board. Perhaps the resistors and capacitors on the solder-side were a last minute design change?
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On the other hand, the circuit board is so tightly crammed on the component side there probably wasn't enough room for everything on one side.
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この手順は未翻訳です。 翻訳を手伝う。
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Here's the component side of the circuit board.
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You can see the various components in these views of the circuit board. Remember, these are all discrete components here -- no integrated circuits! But state of the art at the time, a lot of circuitry crammed into a small space.
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Six of the gray components with an oval cross-section (marked or stamped with "Sony") are transistors.
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The 7th similar looking gray component is a varistor. It's the one at the front left of the circuit board in the 3rd photo in this series.
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Say, do they still teach the resistor colour code in schools these days? :)
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8 件のコメント
This was really cool, thanks!
The first transistor radio hit the consumer market on October 18, 1954. The Regency TR-1 featured four germanium transistors operating on a 22.5-volt battery that provided over twenty hours of life.
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