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Old 1st June 2008   #21 (permalink)
mgall
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maaf bung HAWKINS, kalau saya salah sebelumnya mohon koreksi .........
pada DCT4 seperti kasus bung co_ols seharusnya dengan adanya vflash, vana, vcore, v10 merupakan sarat kerja CPU (reset-clck ok maka cpu akan bekerja), dan dalam kondisi CPU dan IC FLASH baik maka HP akan dapat beroperasi atau nyala.......
untuk VR3 (tegangan untuk cristal sebagai reset/clck CPU) memang harus keluar saat tombol on/off ditekan....... jika VR lain tidak bekerja pasti akan timbul masalah pada fungsi RF bukan berarti HPnya MATOT....
jika ada salahnya koreksine yooooo..... just study
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Old 9th July 2008   #22 (permalink)
prambudi_tri
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maaf,lebih detail mengenai IC donk
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Old 10th July 2008   #23 (permalink)
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ok juga, mana tips lainnya
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Old 1 Week Ago   #24 (permalink)
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Makasih bos,dpt tambahan ilmu lagi neh.....
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Old 1 Week Ago   #25 (permalink)
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Quote:
Originally Posted by mgall View Post
maaf bung HAWKINS, kalau saya salah sebelumnya mohon koreksi .........
pada DCT4 seperti kasus bung co_ols seharusnya dengan adanya vflash, vana, vcore, v10 merupakan sarat kerja CPU (reset-clck ok maka cpu akan bekerja), dan dalam kondisi CPU dan IC FLASH baik maka HP akan dapat beroperasi atau nyala.......
untuk VR3 (tegangan untuk cristal sebagai reset/clck CPU) memang harus keluar saat tombol on/off ditekan....... jika VR lain tidak bekerja pasti akan timbul masalah pada fungsi RF bukan berarti HPnya MATOT....
jika ada salahnya koreksine yooooo..... just study
VR3 dibutuhkan utk 26 Mhz Crystal Clock.
Tanpa VR3 Crystal tdk dpt berfungsi & mengeluarkan 26Mhz Clock.
Tanpa Clock dari Crystal, CPU tdk akan berfungsi walaupun semua tegangan sdh ok.
Maka HP akan matot.

VR3 =2,8V DC tdk dpt dijumper misal ke VR2 yg teg. Vpp. Bisa dijumper ke tegangan lain yg sama besar & searah.
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