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Old 20th March 2008   #1 (permalink)
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Default Mengenal Mesin Ponsel

Seperti apa PWB Ponsel dan apa perbedaannya dengan PCB elektronika umumnya?PWB singkatan dari “printed wired board”, PWB merupakan papan yang terbuat dari fiber glass yang didalamnya terdapat kawat penghantar untuk menghubungkan sekian banyak komponen yang akan dijadikan suatu rangkaian yang di intergrasikan dalam satu modul. PWB dan PCB hampir sama fungsi dan jenisnya, PCB singkatan dari “Printed Circuit Board”, PCB biasanya hanya mempunyai 1 sampai dua lapisan jalur yang ditempatkan pada permukaan depan dan belakang. Berbeda dengan PWB ponsel yang mempunyai banyak lapisan jalur, bahkan bisa lebih dari 8 lapisan jalur yang disusun sedemikian rupa. Tentunya dapat anda bayangkan suatu mesin ponsel dengan begitu banyaknya komponen bahkan sangat kecil ukurannya harus terhubung antara satu komponen dengan yang lainnya dijadikan satu rangkaian yang terintergrasi dalam satu modul, padahal PWB Ponsel sangat kecil dan dibatasi ukurannya. Agar ukuran ponsel tidak menjadi besar, dibutuhkan jalur yang bukan hanya 1-2 lapisan melainkan sampai 8 lapisan bahkan lebih, agar jalur-jalur tersebut tidak membutuhkan lahan (area) yang sangat luas. Lapisan jalur PWB Ponsel seperti gambar dibawah ini:
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Old 20th March 2008   #2 (permalink)
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Pada gambar diatas terlihat terdapat 4 lapisan jalur yang tersusun rapih, jalur yang tersimpan pada setiap lapisan tidak hanya menghantarkan di satu tingkat lapisan saja, akan tetapi memungkinkan suatu jalur yang berada pada lapisan atas akan dihubungkan ke jalur yang berada pada lapisan yang berada dibawahnya, anda dapat melihat pada gambar diatas terdapat jalur secara vertikal.
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Old 20th March 2008   #3 (permalink)
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Default Kerusakan PWB

  • Korosi sering menjadi penyebab utama dari kerusakan PWB, jalur-jalur PWB sangat kecil dan tipis, akibat korosi jalur menjadi terbutus,
  • Konsleting, hubung singkat secara elektronis bisa mengakibatkan jalur putus, sama halnya dengan sebuah sikring, bila arus listrik yang melewati kawat/jalur melebihi dari kapasitasnya maka jalur tersebut akan terbakar bahkan putus,
  • Benturan keras sering kali terjadi akibat ponsel jatuh atau terlempar keras bisa mengakibatkan PWB menjadi bengkok, jalur-jalur yang terdapat di lapisan tengah sangat rentan sekali terhadap tekukan,
  • Ceroboh atau kesalahan dalam melakukan penyolderan yang mengakibatkan terminal-terminal jalur terputus,
  • Penggunaan Solder atau Hotair terlalu panas atau melebihi batas suhu yang dianjurkan.
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Old 20th March 2008   #4 (permalink)
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sory ketinggalan gambar pwb rusaknya
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Old 8th April 2008   #5 (permalink)
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peralatan dasar buat service hape apa aja ya...
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Old 16th April 2008   #6 (permalink)
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iya ni mas, kira - kira apa aja ya alat2 nya buat repair. newbie nih pengen belajar
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Old 19th April 2008   #7 (permalink)
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boss, alat apa saja kok ngak di ajarkan ?
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Old 14th May 2008   #8 (permalink)
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^^ waw keren
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