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STANDARD C520 C528 Repairing setting of TX-audio and 1750-tone Replacement

  1. STANDARD C520 C528 Repairing setting of TX-audio and 1750-tone Replacement, Replacing capacitors and cleanup: 手順 1、 1の画像 1
    • Cover the plastic-front against scratches and daamages.

  2. STANDARD C520 C528 Repairing setting of TX-audio and 1750-tone Replacement: 手順 2、 1の画像 1
    • Loose the screws on the back and on the bottom

  3. STANDARD C520 C528 Repairing setting of TX-audio and 1750-tone Replacement: 手順 3、 1の画像 1
    • Remove the screws, marked red. Locate the old capacitors, marked yellow. And locate the old battery, marked green.

  4. STANDARD C520 C528 Repairing setting of TX-audio and 1750-tone Replacement: 手順 4、 1の画像 1
    • Replace the old caps. At best exchange to tantalium. The three caps on the left uper side and the above the CPU must be replaced against 220µF 6V. Replace the battery It is a wired CR2016.

  5. STANDARD C520 C528 Repairing setting of TX-audio and 1750-tone Replacement: 手順 5、 1の画像 1
    • Next lets have a look on the RF-unit. Loose the screws and desolder the antenna connector. Unmount the board. Then locate and replace the caps.

  6. STANDARD C520 C528 Repairing setting of TX-audio and 1750-tone Replacement: 手順 6、 1の画像 1
    • Remember to replace the cap bottom left as well. The marked trimmer is for freqeuncy-alignment

  7. STANDARD C520 C528 Repairing setting of TX-audio and 1750-tone Replacement, Repairing setting of TX-audio and 1750-tone: 手順 7、 1の画像 1
    • When you have problems setting deviation of audio and tone, then desolder the trimmer R392, R395 and R397. Clean up the board in this area and reinstall the trimmer. Pleace test them and replace the trimmer agains new ones if values do not fit.

終わりに

For dis- and reassembling pleace watch the repair-guide for replacing capacitors on STANDARD C-528 here on ifixit.com

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2人の作成者と共同で作成されました。

ELKOBA

メンバー登録日: 06/24/23

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