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手順 1を翻訳中

手順1
Make sure to unplug the power cord! Take off the back panel by unscrewing the four Phillips head screws on the back of the amplifier. You will find the six preamp tubes are the smaller ones on the right. (The picture only shows five of the six.) Keep the screws in a safe place and mark what part they are for.
  • Make sure to unplug the power cord!

  • Take off the back panel by unscrewing the four Phillips head screws on the back of the amplifier. You will find the six preamp tubes are the smaller ones on the right. (The picture only shows five of the six.)

  • Keep the screws in a safe place and mark what part they are for.

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