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  1. #1
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    Default solusi total lcd blank N70

    Disini sy coba jelaskan hasil sharing dengan para senior dan kasus yg sy hadapi di lapangan....

    kasus N70 Blank itu terjadi biasanya akibat bagian APE (Application Processor Engine) tdk berfungsi dengan semestinya. Bisa terjadi dari IC OMAP yang bermasalah, juga NAND Flash yg bermasalah.
    Namun umumnya Masalah bukan dari OMAP dan NAND Flash melainkan akibat OMAP maupun NAND Flash hilang tegangannya..

    OMAP mendapatkan tegangan VCoreA 1,4V dari IC SMPS N4200, sedangkan
    NAND Flash (APE Flash) mendapatkan tegangan VDRAM 1,8 V dari APE Regulator N4201.

    Jadi sebelum melakukan penjumperan sembarangan sesuai tricks jumper yg banyak beredar, laukan pengukuran tegangan terlebih dahulu sbb:

    1. Pasang PCB Ponsel N70 ke Power Supply dgn teg. 3,6 s/d 4,1 V
    2. Tekan Power On/Off agar Bagian Regulator mengeluarkan tegangan kerja.
    3. Ukur VCoreA di C4200 sebesar 1,4 Volt, jika tdk keluar lakukan Jumper VCoreA
    4. Ukur VDRAM di C4206 sebesar 1,8 Volt, jika tdk keluar lakukan Jumper VDRAM
    5. Jika tegangan VCoreA dan VDRAM diukur keluar normal semua, solusi Jumper tdk akan berguna, karena yg rusak adalah IC OMAP ataupun NAND Flash itu sendiri.


    untuk lebih jelas lihat gambar berukut ini :
    Click here to enlarge

    jika masih blom berhasil kita akan masuk ke langkah berikutnya...
    dimana ini adalah solusi VCoreA bermasalah, dpt dijumper ke VCore utk RAP3G

    VCore = 1,4 V adalah tegangan utk RAP3G yg dikeluarkan oleh TAHVO diukur pada C2302 dan C2243

    VCoreA = 1,4V adalah tegangan utk OMAP yg dikeluarkan oleh IC SMPS diukur pada C2242 atau C4200.

    Solusi jika VCoreA tdk keluar dpt dijumper ke VCore, (C2243 to C4200) atau (C2243 to C2242).
    Sesuai gbr terlampir jumper C2243 Vcore to C4200 VcoreA
    lihat gambar berikut untuk lebih jelasnya :
    Click here to enlarge

    smoga berguna buat rekan2 cyber semua..
    sy juga masih buta banget dalam ini..jadi jika ada kesalahan mohon dimaafkan..
    tx to : Mr.Hawkins dkk...
    BR
    Murdock




  2. #2
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    Default Re: solusi total lcd blank N70

    wahhhhhhhhh....... nice info boz............ sangat berguna ilmu nya..........Click here to enlarge

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  4. #3
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    Default Re: solusi total lcd blank N70

    Sangat bermanfaat sekali bos,.. Click here to enlarge
    Dan diharapkan untuk kedepan,. semua pertanyaan dari semua rekan yg menyangkut permasalahan N70 blank (bukan permasalahan LCD) posting dari bos murdock bisa menjadi patokan dasar dari procedur perbaikan masalah seperti ini.

    Terima kasih banyak bos..
    Salam,.

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    Default Re: solusi total lcd blank N70

    kalau istilahnya ini udah solusi akhir...khatam udah untuk masalah N70 blank..
    selalu berhasil di setiap kasus saya...yg bukan berasal dari LCD...


    untuk bos momod di section ini kiranya bisa untuk di sticky biar rekan2 mudah mencarinya,...makasih...

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    Default Re: solusi total lcd blank N70

    wew...thanks berat bos....
    ini penjelasannya benar2 detail,siapapun pasti paham...
    thanks bro....
    salam kenal ....
    i,m newbieClick here to enlarge

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  10. #6
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    Default Re: solusi total lcd blank N70

    Click here to enlarge Originally Posted by DJ 03 Click here to enlarge
    wew...thanks berat bos....
    ini penjelasannya benar2 detail,siapapun pasti paham...
    thanks bro....
    salam kenal ....
    i,m newbieClick here to enlarge
    salam kenal juga...
    sama aja bos..sy juga masih belajar...Click here to enlarge

  11. #7
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    Default Re: solusi total lcd blank N70

    Lanjut my brother ditunggu trik yg lainnya....top lah Click here to enlargeClick here to enlarge

  12. #8
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    Default Re: solusi total lcd blank N70

    tsolusi mantap banget nich bos...dicaba dulu yachClick here to enlarge

  13. #9
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    Default Re: solusi total lcd blank N70

    Click here to enlarge
    mantap.kalo bole untuk MMC juga dibuat begitu.thanks

  14. #10
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    Default Re: solusi total lcd blank N70

    Solusi nya sangat membantu boz,.
    thanks.. Click here to enlarge

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